From 90d477a6514ebea853515f319025c161da7d0a7c Mon Sep 17 00:00:00 2001 From: Michael Hayes Date: Wed, 25 Sep 2013 21:28:28 +1200 Subject: [PATCH] Add example to show how pseudorandom sequence can be changed --- apps/random2/Makefile | 74 ++++++++++++++++++++++++++++++++++++++ apps/random2/Makefile.test | 64 +++++++++++++++++++++++++++++++++ apps/random2/doc/Makefile | 45 +++++++++++++++++++++++ apps/random2/doc/README | 16 +++++++++ apps/random2/random2.c | 66 ++++++++++++++++++++++++++++++++++ 5 files changed, 265 insertions(+) create mode 100644 apps/random2/Makefile create mode 100644 apps/random2/Makefile.test create mode 100644 apps/random2/doc/Makefile create mode 100644 apps/random2/doc/README create mode 100644 apps/random2/random2.c diff --git a/apps/random2/Makefile b/apps/random2/Makefile new file mode 100644 index 0000000..cccecd2 --- /dev/null +++ b/apps/random2/Makefile @@ -0,0 +1,74 @@ +# File: Makefile +# Author: M. P. Hayes, UCECE +# Date: 12 Sep 2010 +# Descr: Makefile for random2 + +# Definitions. +CC = avr-gcc +CFLAGS = -mmcu=atmega32u2 -Os -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/avr -I../../drivers -I../../utils +OBJCOPY = avr-objcopy +SIZE = avr-size +DEL = rm + + +# Default target. +all: random2.out + + +# Compile: create object files from C source files. +random2.o: random2.c ../../drivers/avr/system.h ../../drivers/display.h ../../drivers/navswitch.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.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 $@ + +navswitch.o: ../../drivers/navswitch.c ../../drivers/avr/delay.h ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/navswitch.h + $(CC) -c $(CFLAGS) $< -o $@ + +font.o: ../../utils/font.c ../../drivers/avr/system.h ../../utils/font.h + $(CC) -c $(CFLAGS) $< -o $@ + +pacer.o: ../../utils/pacer.c ../../drivers/avr/system.h ../../drivers/avr/timer.h ../../utils/pacer.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. +random2.out: random2.o pio.o system.o timer.o display.o ledmat.o navswitch.o font.o pacer.o tinygl.o + $(CC) $(CFLAGS) $^ -o $@ -lm + $(SIZE) $@ + + +# Create hex file for programming from executable file. +random2.hex: random2.out + $(OBJCOPY) -O ihex random2.out random2.hex + + +# Target: clean project. +.PHONY: clean +clean: + -$(DEL) *.o *.out *.hex + + +# Target: program project. +.PHONY: program +program: random2.hex + dfu-programmer atmega32u2 erase; dfu-programmer atmega32u2 flash random2.hex; dfu-programmer atmega32u2 start + + diff --git a/apps/random2/Makefile.test b/apps/random2/Makefile.test new file mode 100644 index 0000000..33841fa --- /dev/null +++ b/apps/random2/Makefile.test @@ -0,0 +1,64 @@ +# File: Makefile +# Author: M. P. Hayes, UCECE +# Date: 11 Sep 2010 +# Descr: Makefile for random2 + +CC = gcc +CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/test -I../../drivers -I../../utils + +DEL = rm + + +# Default target. +all: random2 + + +# Compile: create object files from C source files. +random2-test.o: random2.c ../../drivers/display.h ../../drivers/navswitch.h ../../drivers/test/system.h ../../utils/font.h ../../utils/pacer.h ../../utils/tinygl.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 $@ + +navswitch-test.o: ../../drivers/navswitch.c ../../drivers/navswitch.h ../../drivers/test/avrtest.h ../../drivers/test/delay.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 $@ + +pacer-test.o: ../../utils/pacer.c ../../drivers/test/system.h ../../drivers/test/timer.h ../../utils/pacer.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. +random2: random2-test.o display-test.o ledmat-test.o navswitch-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o pacer-test.o tinygl-test.o + $(CC) $(CFLAGS) $^ -o $@ -lrt + + +# Clean: delete derived files. +.PHONY: clean +clean: + -$(DEL) random2 random2-test.o display-test.o ledmat-test.o navswitch-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o pacer-test.o tinygl-test.o + + + diff --git a/apps/random2/doc/Makefile b/apps/random2/doc/Makefile new file mode 100644 index 0000000..c93d18c --- /dev/null +++ b/apps/random2/doc/Makefile @@ -0,0 +1,45 @@ +# File: Makefile +# Author: M. P. Hayes, UCECE +# 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 + +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 + diff --git a/apps/random2/doc/README b/apps/random2/doc/README new file mode 100644 index 0000000..39a9712 --- /dev/null +++ b/apps/random2/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. diff --git a/apps/random2/random2.c b/apps/random2/random2.c new file mode 100644 index 0000000..d0e1ace --- /dev/null +++ b/apps/random2/random2.c @@ -0,0 +1,66 @@ +/** @file random2.c + @author M.P. Hayes + @date 25 Sep 2013 + @brief Example to show how pseudorandom sequence can be changed by reseeding + the pseudorandom number generator. +*/ + +#include +#include "system.h" +#include "pacer.h" +#include "tinygl.h" +#include "navswitch.h" +#include "../fonts/font5x7_1.h" + +#define LOOP_RATE 10000 + +#define NAVSWITCH_RATE 20 + + +int main (void) +{ + uint16_t navswitch_tick = 0; + uint16_t count = 0; + + system_init (); + + navswitch_init (); + + tinygl_init (LOOP_RATE); + tinygl_font_set (&font5x7_1); + + pacer_init (LOOP_RATE); + + tinygl_draw_char ('*', tinygl_point (0, 0)); + + while (1) + { + pacer_wait (); + + tinygl_update (); + + count++; + + navswitch_tick++; + if (navswitch_tick >= LOOP_RATE / NAVSWITCH_RATE) + { + navswitch_tick = 0; + + navswitch_update (); + + if (navswitch_push_event_p (NAVSWITCH_PUSH)) + { + char c; + + c = (rand () % 26) + 'A'; + + tinygl_draw_char (c, tinygl_point (0, 0)); + + /* Reseed the pseudorandom number generator based on the + number of iterations of the paced loop. */ + srand (count); + } + } + } + return 0; +}