Minimal Changes
This commit is contained in:
Max Braungardt
23
sketches/led-driver/Makefile
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23
sketches/led-driver/Makefile
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CFLAGS = -O3 -Wall --std=c11
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CHIP = 328p
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SOURCE_FILES = $(wildcard *.c)
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OBJ_FILES = $(SOURCE_FILES:%.c=%.o)
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BIN = led-driver.bin
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HEX = led-driver.hex
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default: $(HEX)
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%.o: %.c
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avr-gcc $(CFLAGS) -mmcu=atmega$(CHIP) -o $@ $<
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$(BIN): $(OBJ_FILES)
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avr-gcc $(CFLAGS) -o $@ $^
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$(HEX): $(BIN)
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avr-objcopy -O ihex -j .text -j .data $^ $@
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flash: $(HEX)
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avrdude -p m$(CHIP) -c arduino -B 115200 -P /dev/ttyACM0 -v -v -e flash:w:$(HEX):a
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clean:
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$(RM) $(OBJ_FILES) $(BIN) $(HEX)
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81
sketches/led-driver/a.hex
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81
sketches/led-driver/a.hex
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:100000000C9434000C943E000C943E000C943E0082
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:00000001FF
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BIN
sketches/led-driver/a.out
Executable file
BIN
sketches/led-driver/a.out
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Binary file not shown.
BIN
sketches/led-driver/led-driver.bin
Executable file
BIN
sketches/led-driver/led-driver.bin
Executable file
Binary file not shown.
54
sketches/led-driver/led-driver.c
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54
sketches/led-driver/led-driver.c
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#define F_CPU 1000000UL
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#include <stdint.h>
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#include <avr/io.h>
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#include <util/delay.h>
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/*
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// f=20MHz -> T=0,05 µs
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uint8_t T0H = 6; // == 0.3 µs ~ 0.4 µs (+- 150ns) == [0.25, 0.55] µs
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uint8_t T1H = 14; // == 0.7 µs ~ 0.8 µs (+- 150ns) == [0.65, 0.95] µs
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uint8_t T0L = 15; // == 0.75 µs ~ 0.85µs (+- 150ns) == [0.70, 1.00] µs
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uint8_t T1L = 8; // == 0.35 µs ~ 0.45µs (+- 150ns) == [0.30, 0.60] µs
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uint8_t RES = 51; // > 50 µs
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*/
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#define wait6 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
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#define wait8 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
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#define wait14 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
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#define wait15 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
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inline void writeZero() {
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PORTB = 1;
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wait6;
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PORTB = 0;
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wait15;
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}
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inline void writeOne() {
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PORTB = 1;
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wait14;
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PORTB = 0;
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wait8;
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}
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int main2() {
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DDRB = 1; // PORT C0 output
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do{
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writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();
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writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();
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writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();
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_delay_ms(1);
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}while(1);
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}
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int main( void )
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{
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DDRC |= (1 << PC0);
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while(1) {
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PORTC ^= (1 << PC0);
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_delay_ms(1000);
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}
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return 0;
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}
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83
sketches/led-driver/led-driver.hex
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83
sketches/led-driver/led-driver.hex
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:100000000C9434000C943E000C943E000C943E0082
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:100010000C943E000C943E000C943E000C943E0068
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:100020000C943E000C943E000C943E000C943E0058
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:100050000C943E000C943E000C943E000C943E0028
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:00000001FF
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BIN
sketches/led-driver/led-driver.o
Executable file
BIN
sketches/led-driver/led-driver.o
Executable file
Binary file not shown.
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