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wip adding headers

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This commit is contained in:
hugogogo
2025-03-08 16:29:30 +01:00
parent 1be3750300
commit fe0e7fa223
3 changed files with 73 additions and 71 deletions
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3
Makefile
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@@ -2,6 +2,7 @@
F_CPU = 16000000UL F_CPU = 16000000UL
TARGET = main TARGET = main
CC = avr-gcc CC = avr-gcc
INCLUDES = -I.
AVRGCC_MCU_TYPE = atmega328p AVRGCC_MCU_TYPE = atmega328p
AVRDUDE_MCU_TYPE = m328p AVRDUDE_MCU_TYPE = m328p
@@ -34,7 +35,7 @@ hex: $(TARGET).hex
# -D : defines a preprocessor macro (#define F_CPU <value>) # -D : defines a preprocessor macro (#define F_CPU <value>)
# -o : output filename # -o : output filename
$(TARGET).bin: $(TARGET).c $(TARGET).bin: $(TARGET).c
$(CC) -mmcu=$(AVRGCC_MCU_TYPE) -D F_CPU=$(F_CPU) $(TARGET).c -Os -o $(TARGET).bin $(CC) -mmcu=$(AVRGCC_MCU_TYPE) -D F_CPU=$(F_CPU) $(INCLUDES) $(TARGET).c -Os -o $(TARGET).bin
# avr-objcopy : man avr-jobcopy, https://linux.die.net/man/1/avr-objcopy # avr-objcopy : man avr-jobcopy, https://linux.die.net/man/1/avr-objcopy
# -O : specifies output format, Intel HEX # -O : specifies output format, Intel HEX

67
module01/ex02/headers.h Normal file
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@@ -0,0 +1,67 @@
#ifndef MYHEADER_H
#define MYHEADER_H
// stringify
#define STRINGIFY_HELPER(x) #x
#define STRINGIFY(x) STRINGIFY_HELPER(x)
// concatenate
#define CONCAT_HELPER(x, y) x ## y
#define CONCAT(x, y) CONCAT_HELPER(x, y)
// get argument
#define ARG_1(v1, v2) v1
#define ARG_2(v1, v2) v2
#define GET_PORT(args) ARG_1 args
#define GET_BIT(args) ARG_2 args
// actions on registers
#define SET(register, bit) register |= 1 << bit
#define CLEAR(register, bit) register &= ~(1 << bit)
#define TEST(register, bit) register & 1 << bit
#define TOGGLE(register, bit) register ^= 1 << bit
// actions on elements
#define SET_ELEM(elem) SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define CLEAR_ELEM(elem) CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define TEST_ELEM(elem) TEST(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define TOGGLE_ELEM(elem) TOGGLE(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define MODE_OUTPUT(elem) SET(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
#define MODE_INPUT(elem) CLEAR(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
#define TOGGLE_PIN(elem) SET(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem))
#define TEST_PIN(elem) (TEST(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem)))
#define IS_PIN_SET(elem) (TEST_PIN(elem) == 0)
#define IS_PIN_CLEAR(elem) (TEST_PIN(elem) == 1)
// bits
#define D1 0
#define D2 1
#define D3 2
#define D4 4
#define SW1 2
#define SW2 4
// elements (port, bit)
#define LED1 (B, D1)
#define LED2 (B, D2)
#define LED3 (B, D3)
#define LED4 (B, D4)
#define BUTTON1 (D, SW1)
#define BUTTON2 (D, SW2)
// TIME
#define PRESCALE_VALUE 1024 // can be 1, 8, 64, 256, 1024
// table 16-5 : prescale sets
#define PRESCALE_SET(value) \
((value) == 1 ? (0<<CS12 | 0<<CS11 | 1<<CS10) : \
(value) == 8 ? (0<<CS12 | 1<<CS11 | 0<<CS10) : \
(value) == 64 ? (0<<CS12 | 1<<CS11 | 1<<CS10) : \
(value) == 256 ? (1<<CS12 | 0<<CS11 | 0<<CS10) : \
(value) == 1024? (1<<CS12 | 0<<CS11 | 1<<CS10) : \
(0<<CS12 | 0<<CS11 | 0<<CS10))
#define TIME_MS(ms) (((F_CPU / PRESCALE_VALUE) * ms) / 1000)
#define PERIOD 1000
#define DUTY_CYCLE 10
#define PERCENT(percent, period) (((float)percent / 100) * period)
#endif

72
module01/ex02/main.c
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@@ -1,71 +1,7 @@
#include <avr/io.h> #include <avr/io.h>
#include "headers.h"
// stringify // turns on led2 at 1Hz and duty cycle of 10%, not using PORTx, with empty infinite loop
#define STRINGIFY_HELPER(x) #x
#define STRINGIFY(x) STRINGIFY_HELPER(x)
// concatenate
#define CONCAT_HELPER(x, y) x ## y
#define CONCAT(x, y) CONCAT_HELPER(x, y)
// get argument
#define ARG_1(v1, v2) v1
#define ARG_2(v1, v2) v2
#define GET_PORT(args) ARG_1 args
#define GET_BIT(args) ARG_2 args
// actions on registers
#define SET(register, bit) register |= 1 << bit
#define CLEAR(register, bit) register &= ~(1 << bit)
#define TEST(register, bit) register & 1 << bit
#define TOGGLE(register, bit) register ^= 1 << bit
// actions on elements
#define SET_ELEM(elem) SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define CLEAR_ELEM(elem) CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define TEST_ELEM(elem) TEST(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define TOGGLE_ELEM(elem) TOGGLE(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define MODE_OUTPUT(elem) SET(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
#define MODE_INPUT(elem) CLEAR(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
#define TOGGLE_PIN(elem) SET(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem))
#define TEST_PIN(elem) (TEST(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem)))
#define IS_PIN_SET(elem) (TEST_PIN(elem) == 0)
#define IS_PIN_CLEAR(elem) (TEST_PIN(elem) == 1)
// bits
#define D1 0
#define D2 1
#define D3 2
#define D4 4
#define SW1 2
#define SW2 4
// elements (port, bit)
#define LED1 (B, D1)
#define LED2 (B, D2)
#define LED3 (B, D3)
#define LED4 (B, D4)
#define BUTTON1 (D, SW1)
#define BUTTON2 (D, SW2)
// TIME
#define PRESCALE_VALUE 1024 // can be 1, 8, 64, 256, 1024
// table 16-5 : prescale sets
#define PRESCALE_SET(value) \
((value) == 1 ? (0<<CS12 | 0<<CS11 | 1<<CS10) : \
(value) == 8 ? (0<<CS12 | 1<<CS11 | 0<<CS10) : \
(value) == 64 ? (0<<CS12 | 1<<CS11 | 1<<CS10) : \
(value) == 256 ? (1<<CS12 | 0<<CS11 | 0<<CS10) : \
(value) == 1024? (1<<CS12 | 0<<CS11 | 1<<CS10) : \
(0<<CS12 | 0<<CS11 | 0<<CS10))
#define TIME_MS(ms) (((F_CPU / PRESCALE_VALUE) * ms) / 1000)
#define PERIOD 1000
#define DUTY_CYCLE 10
#define PERCENT(percent, period) (((float)percent / 100) * period)
// END MACROS
int main() { int main() {
MODE_OUTPUT(LED2); MODE_OUTPUT(LED2);
@@ -81,7 +17,5 @@ int main() {
TCCR1B |= (PRESCALE_SET(PRESCALE_VALUE)); // start the timer with the prescaler TCCR1B |= (PRESCALE_SET(PRESCALE_VALUE)); // start the timer with the prescaler
while(1) { while(1);
continue;
}
} }