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Merge branch 'master' of eng-git.canterbury.ac.nz:mph/ucfk4

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main
Michael Hayes 12 years ago
parent 021b9be0a9 ff4c55c03b
commit d7caa4a654
7 changed files with 341 additions and 27 deletions
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51
apps/stars1/stars1.c
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@ -19,11 +19,11 @@
A lower value (say 5) is useful for flashing pixels. */
#define PWM_RATE 40
/* This is the rate (Hz) that new stars are created. */
#define CREATE_RATE 2
/* Number of twinkling stars. */
#define NUM_STARS 10
/* This is the rate (Hz) of luminance changes. */
#define FADE_RATE 2
#define TWINKLE_RATE 5
#define UPDATE_RATE (LUMINANCE_STEPS * PWM_RATE)
@ -31,17 +31,17 @@
int main (void)
{
uint16_t fade_tick = 0;
uint16_t twinkle_tick = 0;
uint16_t create_tick = 0;
uint8_t pwm_tick = 0;
uint8_t i;
uint8_t x;
uint8_t y;
uint8_t col;
/* This stores the current luminance level for each pixel. */
uint8_t display[TINYGL_HEIGHT][TINYGL_WIDTH] = {0, };
/* This controls the luminance levels. The maximum value
of LUMINANCE_STEPS gives 100 percent duty cycle.
The first value must be zero to turn star off when it dies. */
of LUMINANCE_STEPS gives 100 percent duty cycle. */
const uint8_t levels[] = {0, 1, 2, 4, 8, 15, 25, 15, 8, 4, 2, 1};
system_init ();
@ -49,6 +49,19 @@ int main (void)
tinygl_init (LOOP_RATE);
pacer_init (LOOP_RATE);
for (i = 0; i < NUM_STARS; i++)
{
/* Create new star, but not over a live one. */
do
{
x = rand () % TINYGL_WIDTH;
y = rand () % TINYGL_HEIGHT;
} while (display[y][x]);
display[y][x] = rand () % ARRAY_SIZE (levels);
}
while (1)
{
@ -60,10 +73,10 @@ int main (void)
tinygl_update ();
}
fade_tick++;
if (fade_tick >= UPDATE_RATE / FADE_RATE)
twinkle_tick++;
if (twinkle_tick >= UPDATE_RATE / TWINKLE_RATE)
{
fade_tick = 0;
twinkle_tick = 0;
/* Change luminance of stars until they die. */
for (x = 0; x < TINYGL_WIDTH; x++)
@ -71,27 +84,15 @@ int main (void)
for (y = 0; y < TINYGL_HEIGHT; y++)
{
if (display[y][x] > 0)
{
display[y][x]--;
if (display[y][x] == 0)
display[y][x] = ARRAY_SIZE (levels) - 1;
}
}
}
}
create_tick++;
if (create_tick >= UPDATE_RATE / CREATE_RATE)
{
create_tick = 0;
/* Create new star, but not over a live one. */
do
{
x = rand () % TINYGL_WIDTH;
y = rand () % TINYGL_HEIGHT;
} while (display[y][x]);
display[y][x] = ARRAY_SIZE (levels) - 1;
}
/* Pulse width modulate pixels to control luminance. */
for (x = 0; x < TINYGL_WIDTH; x++)
{

74
apps/stars2/Makefile
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@ -0,0 +1,74 @@
# File: Makefile
# Author: M. P. Hayes, UCECE
# Date: 12 Sep 2010
# Descr: Makefile for stars2
# 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: stars2.out
# Compile: create object files from C source files.
stars2.o: stars2.c ../../drivers/avr/system.h ../../drivers/display.h ../../utils/font.h ../../utils/pacer.h ../../utils/spwm.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 $@
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 $@
spwm.o: ../../utils/spwm.c ../../drivers/avr/system.h ../../utils/spwm.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.
stars2.out: stars2.o pio.o system.o timer.o display.o ledmat.o font.o pacer.o spwm.o tinygl.o
$(CC) $(CFLAGS) $^ -o $@ -lm
$(SIZE) $@
# Create hex file for programming from executable file.
stars2.hex: stars2.out
$(OBJCOPY) -O ihex stars2.out stars2.hex
# Target: clean project.
.PHONY: clean
clean:
-$(DEL) *.o *.out *.hex
# Target: program project.
.PHONY: program
program: stars2.hex
dfu-programmer atmega32u2 erase; dfu-programmer atmega32u2 flash stars2.hex; dfu-programmer atmega32u2 start

64
apps/stars2/Makefile.test
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@ -0,0 +1,64 @@
# File: Makefile
# Author: M. P. Hayes, UCECE
# Date: 11 Sep 2010
# Descr: Makefile for stars2
CC = gcc
CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/test -I../../drivers -I../../utils
DEL = rm
# Default target.
all: stars2
# Compile: create object files from C source files.
stars2-test.o: stars2.c ../../drivers/display.h ../../drivers/test/system.h ../../utils/font.h ../../utils/pacer.h ../../utils/spwm.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 $@
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 $@
spwm-test.o: ../../utils/spwm.c ../../drivers/test/system.h ../../utils/spwm.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.
stars2: stars2-test.o display-test.o ledmat-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o pacer-test.o spwm-test.o tinygl-test.o
$(CC) $(CFLAGS) $^ -o $@ -lrt
# Clean: delete derived files.
.PHONY: clean
clean:
-$(DEL) stars2 stars2-test.o display-test.o ledmat-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o font-test.o pacer-test.o spwm-test.o tinygl-test.o

45
apps/stars2/doc/Makefile
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@ -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

16
apps/stars2/doc/README
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@ -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.

112
apps/stars2/stars2.c
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@ -0,0 +1,112 @@
/** @file stars2.c
@author M.P. Hayes
@date 25 Sep 2013
@brief Example of using pseudorandom numbers and controlling pixel
brightness with PWM. Note, pseudorandom numbers follow the same
sequence.
*/
#include <stdlib.h>
#include "system.h"
#include "pacer.h"
#include "tinygl.h"
/* This controls the range of luminance. A bigger number gives more dynamic range
but requires a faster update rate. */
#define LUMINANCE_STEPS 25
/* This needs to be fast enough to prevent the eye noticing flicker.
A lower value (say 5) is useful for flashing pixels. */
#define PWM_RATE 40
/* This is the rate (Hz) that new stars are created. */
#define CREATE_RATE 2
/* This is the rate (Hz) of luminance changes. */
#define FADE_RATE 2
#define UPDATE_RATE (LUMINANCE_STEPS * PWM_RATE)
#define LOOP_RATE (TINYGL_WIDTH * UPDATE_RATE)
int main (void)
{
uint16_t fade_tick = 0;
uint16_t create_tick = 0;
uint8_t pwm_tick = 0;
uint8_t x;
uint8_t y;
uint8_t col;
/* This stores the current luminance level for each pixel. */
uint8_t display[TINYGL_HEIGHT][TINYGL_WIDTH] = {0, };
/* This controls the luminance levels. The maximum value
of LUMINANCE_STEPS gives 100 percent duty cycle.
The first value must be zero to turn star off when it dies. */
const uint8_t levels[] = {0, 1, 2, 4, 8, 15, 25, 15, 8, 4, 2, 1};
system_init ();
tinygl_init (LOOP_RATE);
pacer_init (LOOP_RATE);
while (1)
{
/* Refresh display. */
for (col = 0; col < TINYGL_WIDTH; col++)
{
pacer_wait ();
tinygl_update ();
}
fade_tick++;
if (fade_tick >= UPDATE_RATE / FADE_RATE)
{
fade_tick = 0;
/* Change luminance of stars until they die. */
for (x = 0; x < TINYGL_WIDTH; x++)
{
for (y = 0; y < TINYGL_HEIGHT; y++)
{
if (display[y][x] > 0)
display[y][x]--;
}
}
}
create_tick++;
if (create_tick >= UPDATE_RATE / CREATE_RATE)
{
create_tick = 0;
/* Create new star, but not over a live one. */
do
{
x = rand () % TINYGL_WIDTH;
y = rand () % TINYGL_HEIGHT;
} while (display[y][x]);
display[y][x] = ARRAY_SIZE (levels) - 1;
}
/* Pulse width modulate pixels to control luminance. */
for (x = 0; x < TINYGL_WIDTH; x++)
{
for (y = 0; y < TINYGL_HEIGHT; y++)
{
tinygl_draw_point (tinygl_point (x, y),
levels[display[y][x]] > pwm_tick);
}
}
pwm_tick++;
if (pwm_tick >= UPDATE_RATE / PWM_RATE)
{
pwm_tick = 0;
}
}
return 0;
}

6
drivers/avr/ir_uart.c
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@ -49,8 +49,10 @@ ir_uart_putc (char ch)
{
usart1_putc (ch);
/* The character gets echoed on the UCFK4 so we should
probably gobble it here. */
/* Gobble echoed character. The echoing is due to an electrical
common-path interference problem caused by a poor PCB layout of the
track powering the IR receiver. */
ir_uart_getc ();
return 1;
}

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