Add voltmeter1

apps/README

@@ -1,7 +1,10 @@
 This directory contains a number of test applications contained in
-their own sub-directories.  Within each sub-directory are two
+their own sub-directories.  Each application has a numerical suffix.
-makefiles; one called Makefile and the other called Makefile.test.  By
+As a rule, the larger the number the more difficult the program.
-default when make is run it will read Makefile.
+
+Within each sub-directory are two makefiles; one called Makefile and
+the other called Makefile.test.  By default when make is run it will
+read Makefile.
 
 make           --- builds the application for the ATmega8
 make program   --- programs the application into the ATmega8 flash memory
@@ -14,3 +17,8 @@ modules.  This allows the application to be run and debugged on a PC.
 
 make -f Makefile.test        --- builds the application for the PC
 make -f Makefile.test clean  --- deletes the object and executable files
+
+
+tone1  Play a continuous tone (if piezo tweeter connected)
+tone2  Play a louder continuous tone (if piezo tweeter connected) by driving
+       PIO pins in anti-phase

apps/bounce1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for bounce1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/bounce2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for bounce2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/bounce3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for bounce3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/bounce4/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for bounce4 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/bounce5/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for bounce5 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/chooser/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for chooser docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/demo1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for demo1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/demo2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for demo2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/fonttest1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for fonttest1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/hello1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for hello1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/hello2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for hello2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/hello3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for hello3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/hello4/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for hello4 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/hello5/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for hello5 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_grab1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_grab1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_grab2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_grab2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_grab3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_grab3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_serial_test1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_serial_test1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_serial_test2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_serial_test2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_serial_test3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_serial_test3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_uart_test1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_uart_test1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_uart_test2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_uart_test2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_uart_test3/Makefile

@@ -16,7 +16,7 @@ all: ir_uart_test3.out
 
 
 # Compile: create object files from C source files.
-ir_uart_test3.o: ir_uart_test3.c ../../drivers/avr/ir_uart.h ../../drivers/avr/system.h ../../drivers/display.h ../../drivers/navswitch.h ../../fonts/font5x7_1.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.h ../../utils/uint8toa.h
+ir_uart_test3.o: ir_uart_test3.c ../../drivers/avr/ir_uart.h ../../drivers/avr/system.h ../../drivers/display.h ../../drivers/navswitch.h ../../fonts/font3x5_1.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.h ../../utils/uint8toa.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
 ir_uart.o: ../../drivers/avr/ir_uart.c ../../drivers/avr/ir_uart.h ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/avr/timer0.h ../../drivers/avr/usart1.h

apps/ir_uart_test3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for ir_uart_test3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/ir_uart_test3/doc/callgraph.d

@@ -22,6 +22,8 @@ [email protected]:
 
 tinygl_text_mode_set@tinygl.c: 
 
+tinygl_text_dir_set@tinygl.c: 
+
 navswitch_init@navswitch.c: 
 
 timer0_mode_set@timer0.c: 
@@ -52,11 +54,13 @@ [email protected]:
 
 pacer_init@pacer.c: timer_init
 
+uint8toa@uint8toa.c: 
+
 tinygl_draw_message@tinygl.c: strncpy strlen
 
 tinygl_text@tinygl.c: tinygl_draw_message
 
-show_char@ir_uart_test3.c: tinygl_text
+show_byte@ir_uart_test3.c: uint8toa tinygl_text
 
 timer_get@timer.c: 
 
@@ -90,6 +94,14 @@ [email protected]: ledmat_display_column
 
 tinygl_update@tinygl.c: tinygl_text_advance display_update
 
+usart1_read_ready_p@usart1.c: 
+
+ir_uart_read_ready_p@ir_uart.c: usart1_read_ready_p
+
+usart1_getc@usart1.c: usart1_read_ready_p
+
+ir_uart_getc@ir_uart.c: usart1_getc
+
 pio_config_get@pio.c: 
 
 _delay_loop_1@navswitch.c: 
@@ -102,17 +114,9 @@ [email protected]:
 
 usart1_write_ready_p@usart1.c: 
 
-usart1_putc@usart1.c: usart1_putc usart1_write_ready_p
+usart1_putc@usart1.c: usart1_write_ready_p
 
 ir_uart_putc@ir_uart.c: usart1_putc
 
-usart1_read_ready_p@usart1.c: 
+main@ir_uart_test3.c: system_init tinygl_init tinygl_font_set tinygl_text_speed_set tinygl_text_mode_set tinygl_text_dir_set navswitch_init ir_uart_init pacer_init show_byte pacer_wait tinygl_update ir_uart_read_ready_p ir_uart_getc show_byte navswitch_update navswitch_push_event_p ir_uart_putc ir_uart_getc navswitch_push_event_p ir_uart_putc ir_uart_getc
-
-ir_uart_read_ready_p@ir_uart.c: usart1_read_ready_p
-
-usart1_getc@usart1.c: usart1_read_ready_p
-
-ir_uart_getc@ir_uart.c: usart1_getc
-
-main@ir_uart_test3.c: system_init tinygl_init tinygl_font_set tinygl_text_speed_set tinygl_text_mode_set navswitch_init ir_uart_init pacer_init show_char pacer_wait tinygl_update navswitch_update navswitch_push_event_p ir_uart_putc navswitch_push_event_p ir_uart_putc ir_uart_read_ready_p ir_uart_getc show_char
 

apps/ir_uart_test3/doc/files.d

@@ -14,32 +14,32 @@
 
 ../../drivers/navswitch.h: 
 
-../../drivers/avr/delay.h: 
-
-../../drivers/navswitch.c: ../../drivers/navswitch.h ../../drivers/avr/delay.h ../../drivers/avr/pio.h
-
-../../drivers/navswitch.o: ../../drivers/navswitch.c
-
 ../../drivers/display.h: 
 
 ../../utils/font.h: 
 
 ../../utils/tinygl.h: ../../drivers/display.h ../../utils/font.h
 
-../../utils/tinygl.c: ../../utils/tinygl.h ../../drivers/display.h ../../utils/font.h
-
-../../utils/tinygl.o: ../../utils/tinygl.c
-
 ../../utils/pacer.h: 
 
+../../utils/uint8toa.h: 
+
 ../../drivers/avr/ir_uart.h: 
 
-../../fonts/font5x7_1.h: ../../utils/font.h
+../../fonts/font3x5_1.h: ../../utils/font.h
 
-ir_uart_test3.c: ../../drivers/navswitch.h ../../utils/tinygl.h ../../utils/pacer.h ../../drivers/avr/ir_uart.h ../../fonts/font5x7_1.h
+ir_uart_test3.c: ../../drivers/navswitch.h ../../utils/tinygl.h ../../utils/pacer.h ../../utils/uint8toa.h ../../drivers/avr/ir_uart.h ../../fonts/font3x5_1.h
 
 ir_uart_test3.o: ir_uart_test3.c
 
+../../utils/uint8toa.c: 
+
+../../utils/uint8toa.o: ../../utils/uint8toa.c
+
+../../utils/tinygl.c: ../../utils/tinygl.h ../../drivers/display.h ../../utils/font.h
+
+../../utils/tinygl.o: ../../utils/tinygl.c
+
 ../../utils/font.c: ../../utils/font.h
 
 ../../utils/font.o: ../../utils/font.c
@@ -84,5 +84,11 @@ ir_uart_test3.o: ir_uart_test3.c
 
 ../../drivers/avr/usart1.o: ../../drivers/avr/usart1.c
 
-ir_uart_test3.out: ../../drivers/avr/timer.o ../../drivers/ledmat.o ../../drivers/navswitch.o ../../utils/tinygl.o ir_uart_test3.o ../../utils/font.o ../../drivers/avr/pio.o ../../utils/pacer.o ../../drivers/display.o ../../drivers/avr/system.o ../../drivers/avr/prescale.o ../../drivers/avr/ir_uart.o ../../drivers/avr/timer0.o ../../drivers/avr/usart1.o
+../../drivers/avr/delay.h: 
+
+../../drivers/navswitch.c: ../../drivers/navswitch.h ../../drivers/avr/delay.h ../../drivers/avr/pio.h
+
+../../drivers/navswitch.o: ../../drivers/navswitch.c
+
+ir_uart_test3.out: ../../drivers/avr/timer.o ../../drivers/ledmat.o ir_uart_test3.o ../../utils/uint8toa.o ../../utils/tinygl.o ../../utils/font.o ../../drivers/avr/pio.o ../../utils/pacer.o ../../drivers/display.o ../../drivers/avr/system.o ../../drivers/avr/prescale.o ../../drivers/avr/ir_uart.o ../../drivers/avr/timer0.o ../../drivers/avr/usart1.o ../../drivers/navswitch.o
 

apps/ir_uart_test3/doc/modules.d

@@ -14,6 +14,8 @@ timer:
 
 pacer: timer
 
+uint8toa: 
+
 usart1: 
 
 prescale: 
@@ -22,5 +24,5 @@ timer0: prescale
 
 ir_uart: usart1 timer0 pio
 
-ir_uart_test3: navswitch tinygl pacer ir_uart
+ir_uart_test3: navswitch tinygl pacer uint8toa ir_uart
 

apps/ir_uart_test3/ir_uart_test3.c

@@ -18,6 +18,8 @@
 /* Define polling rate in Hz.  */
 #define LOOP_RATE 300
 
+#define SWITCH_POLL_RATE 20
+
 /* Define text update rate (characters per 10 s).  */
 #define MESSAGE_RATE 10
 
@@ -61,8 +63,20 @@ int main (void)
 
         tinygl_update ();
 
+        if (ir_uart_read_ready_p ())
+        {
+            uint8_t data;
+
+            data = ir_uart_getc ();
+
+            /* Note, if messages come in too fast, say due to IR
+               inteference from fluorescent lights, then the display
+               will not keep up and will appear to freeze.  */
+            show_byte (data);
+        }
+
         count++;
-        if (count > 20)
+        if (count > LOOP_RATE / SWITCH_POLL_RATE)
         {
             count = 0;
 
@@ -82,18 +96,6 @@ int main (void)
                 ir_uart_getc ();
             }
         }
-
-        if (ir_uart_read_ready_p ())
-        {
-            uint8_t data;
-
-            data = ir_uart_getc ();
-
-            /* Note, if messages come in too fast, say due to IR
-               inteference from fluorescent lights, then the display
-               will not keep up and will appear to freeze.  */
-            show_byte (data);
-        }
     }
 
     return 0;

apps/led0/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led0 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/led1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/led2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/led3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/led4/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led4 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/led5/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for led5 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/pio1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for pio1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/pio2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for pio2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/pio2/pio2.c

@@ -16,6 +16,7 @@ int main (void)
 
     while (1)
     {
+        count++;
         if (count > 10000)
         {
             pio_output_toggle (LED1_PIO);

apps/pio3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for pio3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/scribble1/Makefile.test

@@ -4,7 +4,7 @@
 # Descr:  Makefile for scribble1
 
 CC = gcc
-CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/test -I../../drivers -I../../fonts -I../../utils
+CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/test -I../../drivers -I../../utils
 
 DEL = rm
 
@@ -14,7 +14,7 @@ all: scribble1
 
 
 # Compile: create object files from C source files.
-scribble1-test.o: scribble1.c ../../drivers/button.h ../../drivers/display.h ../../drivers/led.h ../../drivers/navswitch.h ../../drivers/test/system.h ../../fonts/font5x7_1.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.h
+scribble1-test.o: scribble1.c ../../drivers/button.h ../../drivers/display.h ../../drivers/led.h ../../drivers/navswitch.h ../../drivers/test/system.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
 button-test.o: ../../drivers/button.c ../../drivers/button.h ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h

apps/scribble1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for scribble1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/snake1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for snake1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/space10/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for space10 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/space10/space10.c

@@ -9,7 +9,6 @@
 
 #include <string.h>
 #include "system.h"
-#include "display.h"
 #include "tinygl.h"
 #include "pacer.h"
 #include "ir_serial.h"

apps/space11/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for space11 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/space11/space11.c

@@ -8,7 +8,6 @@
 
 #include <string.h>
 #include "system.h"
-#include "display.h"
 #include "tinygl.h"
 #include "task.h"
 #include "navswitch.h"

apps/space12/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for space12 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/space12/space12.c

@@ -1,14 +1,14 @@
 /** @file   space12.c
     @author M. P. Hayes, UCECE
     @date   20 April 2007
-    @brief  A simple space invaders game with different difficulty levels.
+    @brief  A simple space invaders game with different difficulty levels
+            and sound effects.
 
-    @defgroup space12 A simple space invaders game.
+    @defgroup space12 A simple space invaders game with sound effects.
 */
 
 #include <string.h>
 #include "system.h"
-#include "display.h"
 #include "tinygl.h"
 #include "task.h"
 #include "navswitch.h"
@@ -39,8 +39,12 @@ enum {GAME_OVER_PERIOD = 2};
 enum {BUTTON_HOLD_PERIOD = 1};
 
 
-/* Connect piezo tweeter to outermost pins of UCFK4 P1 connector.  */
+/* Connect piezo tweeter to first and third pin of UCFK4 P1 connector
-#define PIEZO_PIO PIO_DEFINE (PORT_D, 6)
+   for push-pull operation.  For single-ended drive (with reduced
+   volume) connect the other piezo connection to ground or Vcc and do
+   not define PIEZO2_PIO.  */
+#define PIEZO1_PIO PIO_DEFINE (PORT_D, 4)
+#define PIEZO2_PIO PIO_DEFINE (PORT_D, 6)
 
 
 /** Define flasher modes.  */
@@ -100,13 +104,24 @@ static void tweeter_task_init (void)
 {
     tweeter = tweeter_init (&tweeter_info, TWEETER_TASK_RATE, scale_table);
 
-    pio_config_set (PIEZO_PIO, PIO_OUTPUT_LOW);
+    pio_config_set (PIEZO1_PIO, PIO_OUTPUT_LOW);
+#ifdef PIEZO2_PIO
+    pio_config_set (PIEZO2_PIO, PIO_OUTPUT_LOW);
+#endif
 }
 
 
 static void tweeter_task (__unused__ void *data)
 {
-    pio_output_set (PIEZO_PIO, tweeter_update (tweeter));
+    bool state;
+
+    state = tweeter_update (tweeter);
+
+    pio_output_set (PIEZO1_PIO, state);
+#ifdef PIEZO2_PIO
+    /* Push-pull piezo tweeter drive.  */
+    pio_output_set (PIEZO2_PIO, !state);
+#endif
 }
 
 

apps/space9/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for space9 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/space9/space9.c

@@ -8,7 +8,6 @@
 
 #include <string.h>
 #include "system.h"
-#include "display.h"
 #include "tinygl.h"
 #include "pacer.h"
 #include "navswitch.h"

apps/spacey_remote1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for spacey_remote1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/squeak0/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for squeak0 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/squeak1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for squeak1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/squeak2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for squeak2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/squeak3/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for squeak3 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/squeak4/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for squeak4 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/steer1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for steer1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/stopwatch1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for stopwatch1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/task1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for task1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/task2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for task2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/tdmdemo1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for tdmdemo1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/tdmdemo2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for tdmdemo2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/updown1/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for updown1 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/updown2/doc/Makefile

@@ -3,6 +3,9 @@
 # Date:   11 Sep 2010
 # Descr:  Makefile for updown2 docs
 
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
 DEL = rm
 
 all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
@@ -11,7 +14,7 @@ file_dependencies.pdf: files.d
 	../../../etc/graphdeps.py $< --out $@
 
 module_dependencies.pdf: modules.d 
-	../../../etc/graphdeps.py $< --modules --out $@
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
 
 makefile_dependencies.pdf: ../Makefile
 	../../../etc/graphdeps.py $< --out $@

apps/voltmeter1/Makefile

@@ -0,0 +1,70 @@
+# File:   Makefile
+# Author: M. P. Hayes, UCECE
+# Date:   12 Sep 2010
+# Descr:  Makefile for voltmeter1
+
+# Definitions.
+CC = avr-gcc
+CFLAGS = -mmcu=atmega32u2 -Os -Wall -Wstrict-prototypes -Wextra -g -I. -I../../drivers -I../../fonts -I../../drivers/avr -I../../utils
+OBJCOPY = avr-objcopy
+SIZE = avr-size
+DEL = rm
+
+
+# Default target.
+all: voltmeter1.out
+
+
+# Compile: create object files from C source files.
+voltmeter1.o: voltmeter1.c ../../drivers/avr/system.h ../../drivers/avr/timer.h ../../drivers/display.h ../../fonts/font3x5_1.h ../../utils/font.h ../../utils/task.h ../../utils/tinygl.h adc.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+adc.o: adc.c ../../drivers/avr/delay.h ../../drivers/avr/pio.h ../../drivers/avr/system.h adc.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+pio.o: ../../drivers/avr/pio.c ../../drivers/avr/pio.h ../../drivers/avr/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+system.o: ../../drivers/avr/system.c ../../drivers/avr/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+timer.o: ../../drivers/avr/timer.c ../../drivers/avr/system.h ../../drivers/avr/timer.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+display.o: ../../drivers/display.c ../../drivers/avr/system.h ../../drivers/display.h ../../drivers/ledmat.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+ledmat.o: ../../drivers/ledmat.c ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/ledmat.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+font.o: ../../utils/font.c ../../drivers/avr/system.h ../../utils/font.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+task.o: ../../utils/task.c ../../drivers/avr/system.h ../../drivers/avr/timer.h ../../utils/task.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+tinygl.o: ../../utils/tinygl.c ../../drivers/avr/system.h ../../drivers/display.h ../../utils/font.h ../../utils/tinygl.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+
+
+
+# Link: create output file (executable) from object files.
+voltmeter1.out: voltmeter1.o adc.o pio.o system.o timer.o display.o ledmat.o font.o task.o tinygl.o
+	$(CC) $(CFLAGS) $^ -o $@ -lm
+	$(SIZE) $@
+
+
+# Target: clean project.
+.PHONY: clean
+clean: 
+	-$(DEL) *.o *.out *.hex
+
+
+# Target: program project.
+.PHONY: program
+program: voltmeter1.out
+	$(OBJCOPY) -O ihex voltmeter1.out voltmeter1.hex
+	dfu-programmer atmega32u2 erase; dfu-programmer atmega32u2 flash voltmeter1.hex; dfu-programmer atmega32u2 start
+
+

apps/voltmeter1/Makefile.test

@@ -0,0 +1,64 @@
+# File:   Makefile
+# Author: M. P. Hayes, UCECE
+# Date:   11 Sep 2010
+# Descr:  Makefile for voltmeter1
+
+CC = gcc
+CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I. -I../../drivers/test -I../../drivers -I../../fonts -I../../utils
+
+DEL = rm
+
+
+# Default target.
+all: voltmeter1
+
+
+# Compile: create object files from C source files.
+voltmeter1-test.o: voltmeter1.c ../../drivers/display.h ../../drivers/test/system.h ../../drivers/test/timer.h ../../fonts/font3x5_1.h ../../utils/font.h ../../utils/task.h ../../utils/tinygl.h adc.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+adc-test.o: adc.c ../../drivers/test/avrtest.h ../../drivers/test/delay.h ../../drivers/test/pio.h ../../drivers/test/system.h adc.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+display-test.o: ../../drivers/display.c ../../drivers/display.h ../../drivers/ledmat.h ../../drivers/test/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+ledmat-test.o: ../../drivers/ledmat.c ../../drivers/ledmat.h ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+mgetkey-test.o: ../../drivers/test/mgetkey.c ../../drivers/test/mgetkey.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+pio-test.o: ../../drivers/test/pio.c ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+system-test.o: ../../drivers/test/system.c ../../drivers/test/avrtest.h ../../drivers/test/mgetkey.h ../../drivers/test/pio.h ../../drivers/test/system.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+timer-test.o: ../../drivers/test/timer.c ../../drivers/test/system.h ../../drivers/test/timer.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+font-test.o: ../../utils/font.c ../../drivers/test/system.h ../../utils/font.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+task-test.o: ../../utils/task.c ../../drivers/test/system.h ../../drivers/test/timer.h ../../utils/task.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+tinygl-test.o: ../../utils/tinygl.c ../../drivers/display.h ../../drivers/test/system.h ../../utils/font.h ../../utils/tinygl.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+
+
+
+# Link: create executable file from object files.
+voltmeter1: voltmeter1-test.o adc-test.o display-test.o ledmat-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o task-test.o tinygl-test.o
+	$(CC) $(CFLAGS) $^ -o $@ -lrt
+
+
+# Clean: delete derived files.
+.PHONY: clean
+clean: 
+	-$(DEL) voltmeter1 voltmeter1-test.o adc-test.o display-test.o ledmat-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o task-test.o tinygl-test.o
+
+
+

apps/voltmeter1/adc.c

@@ -0,0 +1,104 @@
+#include "avr/io.h"
+#include "pio.h"
+#include "delay.h"
+#include "adc.h"
+
+/**
+   This requires a capacitor connected from AIN0 (P1-3) to ground
+   (P1-1) and a resistor connected from AIN0 (P1-3) to PD5 (P1-7).
+   The unknown input voltage is applied to AIN3 (P1-6).
+
+   It operates by applying a fixed voltage from PD5 (5 V, assuming the
+   UCFK4 is powered from USB) to the capacitor and timing how long it
+   takes for the capacitor voltage to exceed the unknown voltage using
+   the comparator. 
+
+   Here's the typical usage for two channels.:
+
+   adc_init ();
+   adc_enable (ADC_CHANNEL1);
+   adc_enable (ADC_CHANNEL2);
+
+   adc_measure (ADC_CHANNEL1);
+
+   wait until capacitor discharged
+
+   adc_measure (ADC_CHANNEL2);
+
+   Note adc_measure blocks until the voltage on the capacitor exceeds
+   the voltage being measured.  adc_measure cannot be called again
+   until the capacitor is discharged.  This could be greatly sped up
+   by using another PIO directly connected to the capacitor.  Better
+   still, since PD1 shares the same pin as AIN0, it can be configured
+   as a low output to more rapidly discharge the capacitor.
+
+   From the IBIS file it appears that a PIO can sink/source 60 mA
+   (typ) at 25 deg. C.  The datasheet says that the maximum PIO DC
+   current is 40 mA.
+
+ */
+
+#ifndef ADC_CHARGE_PIO
+#define ADC_CHARGE_PIO PIO_DEFINE(PORT_D, 5)
+#endif
+
+#ifndef ADC_CAPACITANCE
+#define ADC_CAPACITANCE 4.7e-9
+#endif
+
+#ifndef ADC_RESISTANCE
+#define ADC_RESISTANCE 37e3
+#endif
+
+#define ADC_TIME_CONSTANT_US (ADC_CAPACITANCE * ADC_RESISTANCE * 1e6)
+
+/* This is not defined in io32u2.h  */
+#ifndef ACMUX
+#define ACMUX _SFR_MEM8(0x7D)
+#endif
+
+void adc_init(void)
+{
+    pio_config_set(ADC_CHARGE_PIO, PIO_OUTPUT_LOW);
+    
+    /* Disable digital input for AIN0.  */
+    DIDR1 |= BIT(0);
+
+    /* By default the analog comparator is enabled but let's enable it.  */
+    ACSR &= BIT(7);
+}
+
+
+void adc_enable(uint8_t adc_channel)
+{
+   /* Disable digital input for selected channel.  */
+    DIDR1 |= BIT(adc_channel);
+}
+
+
+void adc_disable(uint8_t adc_channel)
+{
+   /* Enable digital input for selected channel.  */
+    DIDR1 &= ~BIT(adc_channel);
+}
+
+
+uint8_t adc_measure(uint8_t adc_channel)
+{
+    uint8_t count;
+
+    count = 0;
+
+    /* Select desired channel.  */
+    ACMUX = adc_channel - 1;
+
+    pio_output_high (ADC_CHARGE_PIO);
+
+    while (! (ACSR & BIT(ACO)))
+        count++;
+
+    pio_output_low (ADC_CHARGE_PIO);    
+
+    return count;
+}
+

apps/voltmeter1/adc.h

@@ -0,0 +1,17 @@
+#ifndef ADC_H
+#define ADC_H
+
+#include "system.h"
+
+void adc_init(void);
+
+void adc_enable(uint8_t adc_channel);
+
+void adc_disable(uint8_t adc_channel);
+
+uint8_t adc_measure(uint8_t adc_channel);
+
+
+#endif
+
+

apps/voltmeter1/doc/Makefile

@@ -0,0 +1,45 @@
+# File:   Makefile
+# Author: M. P. Hayes, UCECE
+# Date:   11 Sep 2010
+# Descr:  Makefile for voltmeter1 docs
+
+# The scripts used to make the graphs require the program dot; this
+# is part of the graphviz package.
+
+DEL = rm
+
+all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
+
+file_dependencies.pdf: files.d 
+	../../../etc/graphdeps.py $< --out $@
+
+module_dependencies.pdf: modules.d 
+	../../../etc/graphdeps.py $< --modules --rotate --out $@
+
+makefile_dependencies.pdf: ../Makefile
+	../../../etc/graphdeps.py $< --out $@
+
+build_dependencies.pdf: ../Makefile
+	../../../etc/graphdeps.py $< --out $@ --showops
+
+callgraph.pdf: callgraph.d
+	../../../etc/graphdeps.py --calls --modules $< --out $@ --showops
+
+
+files.d: ../Makefile
+	(cd ..;	../../etc/makemake.py --relpath --files . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system.h > doc/files.d)
+
+
+modules.d: ../Makefile
+	(cd ..;	../../etc/makemake.py --relpath --modules . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system > doc/modules.d)
+
+
+callgraph.d: ../Makefile
+	(cd ..;	../../etc/makemake.py --cc="avr-gcc" --cflags="-Os -mmcu=atmega32u2" --relpath --calls . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system.h > doc/callgraph.d)
+
+
+# Clean: delete derived files.
+.PHONY: clean
+clean: 
+	-$(DEL) *.d *.pdf
+

apps/voltmeter1/doc/README

@@ -0,0 +1,16 @@
+Running make in this directory will generate a number of PDF graphs.
+In the callgraph, the arrows means "calls".  In the dependency graphs,
+the arrows means "requires" (or "depends upon").
+
+callgraph.pdf             This shows the callgraph, i.e., what functions each
+                          function in the program calls.
+module_dependencies.pdf   This shows the dependencies between the modules.
+file_dependencies.pdf     This shows the dependencies between the files.
+makefile_dependencies.pdf This shows the dependencies required by make when
+                          building the program.
+build_dependencies.pdf    This is like makefile_dependencies.pdf but shows
+                          the operations performed to generate the new file.
+
+callgraph.d               This shows the callgraph in text format.
+files.d                   This shows the file dependencies in text format.
+modules.d                 This shows the module dependencies in text format.

apps/voltmeter1/doc/callgraph.d

@@ -0,0 +1,80 @@
+system_clock_init@system.c: 
+
+system_watchdog_timer_init@system.c: 
+
+system_init@system.c: system_clock_init system_watchdog_timer_init
+
+pio_config_set@pio.c: 
+
+ledmat_init@ledmat.c: pio_config_set pio_config_set
+
+display_clear@display.c: 
+
+display_init@display.c: ledmat_init display_clear
+
+tinygl_text_speed_set@tinygl.c: 
+
+tinygl_clear@tinygl.c: display_clear
+
+tinygl_init@tinygl.c: display_init tinygl_text_speed_set tinygl_clear
+
+tinygl_font_set@tinygl.c: 
+
+tinygl_text_mode_set@tinygl.c: 
+
+tinygl_text_dir_set@tinygl.c: 
+
+display_task_init@voltmeter1.c: tinygl_init tinygl_font_set tinygl_text_mode_set tinygl_text_dir_set
+
+adc_init@adc.c: pio_config_set
+
+adc_enable@adc.c: 
+
+adc_task_init@voltmeter1.c: adc_init adc_enable
+
+timer_init@timer.c: 
+
+timer_get@timer.c: 
+
+timer_wait_until@timer.c: timer_get
+
+task_schedule@task.c: timer_init timer_get timer_wait_until timer_get
+
+tinygl_point@tinygl.c: 
+
+font_pixel_get@font.c: 
+
+tinygl_font_pixel_get@tinygl.c: font_pixel_get
+
+display_pixel_set@display.c: 
+
+tinygl_draw_point@tinygl.c: display_pixel_set
+
+tinygl_draw_char@tinygl.c: tinygl_point tinygl_font_pixel_get tinygl_draw_point tinygl_point tinygl_draw_point tinygl_point tinygl_font_pixel_get tinygl_draw_point tinygl_point tinygl_draw_point
+
+tinygl_draw_string@tinygl.c: tinygl_draw_char
+
+tinygl_text_advance@tinygl.c: tinygl_draw_string tinygl_draw_string
+
+pio_output_high@pio.c: 
+
+pio_output_low@pio.c: 
+
+ledmat_display_column@ledmat.c: pio_output_high pio_output_low pio_output_high pio_output_low
+
+display_update@display.c: ledmat_display_column
+
+tinygl_update@tinygl.c: tinygl_text_advance display_update
+
+display_task@voltmeter1.c: tinygl_update
+
+adc_measure@adc.c: pio_output_high pio_output_low
+
+tinygl_draw_message@tinygl.c: strncpy strlen
+
+tinygl_text@tinygl.c: tinygl_draw_message
+
+adc_task@voltmeter1.c: adc_measure tinygl_text
+
+main@voltmeter1.c: system_init display_task_init adc_task_init task_schedule @display_task @adc_task
+

apps/voltmeter1/doc/files.d

@@ -0,0 +1,62 @@
+../../drivers/avr/timer.h: 
+
+../../drivers/avr/timer.c: ../../drivers/avr/timer.h
+
+../../drivers/avr/timer.o: ../../drivers/avr/timer.c
+
+../../drivers/avr/system.c: 
+
+../../drivers/avr/system.o: ../../drivers/avr/system.c
+
+../../utils/task.h: ../../drivers/avr/timer.h
+
+../../drivers/display.h: 
+
+../../utils/font.h: 
+
+../../utils/tinygl.h: ../../drivers/display.h ../../utils/font.h
+
+adc.h: 
+
+../../fonts/font3x5_1.h: ../../utils/font.h
+
+voltmeter1.c: ../../utils/task.h ../../utils/tinygl.h adc.h ../../fonts/font3x5_1.h
+
+voltmeter1.o: voltmeter1.c
+
+../../utils/font.c: ../../utils/font.h
+
+../../utils/font.o: ../../utils/font.c
+
+../../drivers/avr/pio.h: 
+
+../../drivers/avr/delay.h: 
+
+adc.c: ../../drivers/avr/pio.h ../../drivers/avr/delay.h adc.h
+
+adc.o: adc.c
+
+../../drivers/avr/pio.c: ../../drivers/avr/pio.h
+
+../../drivers/avr/pio.o: ../../drivers/avr/pio.c
+
+../../drivers/ledmat.h: 
+
+../../drivers/display.c: ../../drivers/ledmat.h ../../drivers/display.h
+
+../../drivers/display.o: ../../drivers/display.c
+
+../../drivers/ledmat.c: ../../drivers/avr/pio.h ../../drivers/ledmat.h
+
+../../drivers/ledmat.o: ../../drivers/ledmat.c
+
+../../utils/tinygl.c: ../../utils/tinygl.h ../../drivers/display.h ../../utils/font.h
+
+../../utils/tinygl.o: ../../utils/tinygl.c
+
+../../utils/task.c: ../../utils/task.h ../../drivers/avr/timer.h
+
+../../utils/task.o: ../../utils/task.c
+
+voltmeter1.out: ../../drivers/avr/timer.o ../../drivers/avr/system.o voltmeter1.o ../../utils/font.o adc.o ../../drivers/avr/pio.o ../../drivers/display.o ../../drivers/ledmat.o ../../utils/tinygl.o ../../utils/task.o
+

apps/voltmeter1/doc/modules.d

@@ -0,0 +1,18 @@
+timer: 
+
+task: timer
+
+pio: 
+
+ledmat: pio
+
+display: ledmat
+
+font: 
+
+tinygl: display font
+
+adc: pio
+
+voltmeter1: task tinygl adc
+

apps/voltmeter1/voltmeter1.c

@@ -0,0 +1,76 @@
+/** @file   voltmeter1.c
+    @author M. P. Hayes, UCECE
+    @date   1 February 2013
+    @brief  Simple message display program
+    
+    @defgroup voltmeter1 Simple voltmeter
+*/
+
+#include "system.h"
+#include "task.h"
+#include "tinygl.h"
+#include "adc.h"
+#include "../fonts/font3x5_1.h"
+
+
+/* Define polling rates in Hz.  */
+#define DISPLAY_TASK_RATE 250
+
+#define ADC_TASK_RATE 1
+
+#define ADC_AIN 3
+
+
+static void adc_task_init (void)
+{
+    adc_init ();
+    adc_enable (ADC_AIN);
+}
+
+
+static void adc_task (__unused__ void *data)
+{
+    uint8_t count;
+    char str[3];
+
+    count = adc_measure (ADC_AIN);
+
+    str[0] = ((count / 10) % 10) + '0';
+    str[1] = (count % 10) + '0';
+    str[2] = 0;
+
+    tinygl_text (str);
+}
+
+
+static void display_task_init (void)
+{
+    tinygl_init (DISPLAY_TASK_RATE);
+    tinygl_font_set (&font3x5_1);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_STEP);
+    tinygl_text_dir_set (TINYGL_TEXT_DIR_ROTATE);
+}
+
+
+static void display_task (__unused__ void *data)
+{
+    tinygl_update ();
+}
+
+
+int main (void)
+{
+    task_t tasks[] =
+    {
+        {.func = display_task, .period = TASK_RATE / DISPLAY_TASK_RATE}, 
+        {.func = adc_task, .period = TASK_RATE / ADC_TASK_RATE},
+    };
+
+    system_init ();
+
+    display_task_init ();
+    adc_task_init ();
+
+    task_schedule (tasks, ARRAY_SIZE (tasks));
+    return 0;
+}