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headers and comments for module02

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This commit is contained in:
hugo LAMY
2025-03-08 22:41:36 +01:00
parent d91524b14a
commit e63951591c
29 changed files with 592 additions and 518 deletions
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6
module02/ex00/bitmanip.h
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@@ -14,8 +14,14 @@
#define ARG_2(v1, v2) v2
#define GET_PORT(args) ARG_1 args
#define GET_BIT(args) ARG_2 args
// // version with "LED1 B, D1" without parenthesis
// #define ARG_1(v1, ...) v1
// #define ARG_2(v1, v2, ...) v2
// #define GET_PORT(...) ARG_1(__VA_ARGS__)
// #define GET_BIT(...) ARG_2(__VA_ARGS__)
// Actions on elements
// #define SET_ELEM(...) SET(CONCAT(PORT, GET_PORT(__VA_ARGS__)), GET_BIT(__VA_ARGS__)) // version for "LED1 B, D1" without parenthesis
#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))

61
module02/ex00/main.c
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@@ -2,63 +2,8 @@
#include <util/delay.h>
#include <avr/interrupt.h>
// mathematics
#define DIV_ROUND_CLOSEST(n, d) ((((n) < 0) == ((d) < 0)) ? (((n) + (d)/2)/(d)) : (((n) - (d)/2)/(d)))
// 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
// // version with "LED1 B, D1" without parenthesis
// #define ARG_1(v1, ...) v1
// #define ARG_2(v1, v2, ...) v2
// #define GET_PORT(...) ARG_1(__VA_ARGS__)
// #define GET_BIT(...) ARG_2(__VA_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 SET_ELEM(...) SET(CONCAT(PORT, GET_PORT(__VA_ARGS__)), GET_BIT(__VA_ARGS__)) // version for "LED1 B, D1" without parenthesis
#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 LED1 (B, D1)
#define LED2 (B, D2)
#define LED3 (B, D3)
#define LED4 (B, D4)
#define BUTTON1 (D, SW1)
#define BUTTON2 (D, SW2)
#include "utils.h"
#include "bitmanip.h"
// USART
// Table 20-1 : Baud Rate Calculation
@@ -104,7 +49,7 @@ void uart_tx(char c) {
UDR0 = (unsigned char) c; // 20.11.1 : Put data into buffer, UDRn – USART I/O Data Register (read and write)
}
// write Z on serial port, at a !Hz frequency
// write Z on serial port, at a 1Hz frequency
// `screen /dev/ttyUSB0 115200`
int main() {
uart_init();

15
module02/ex00/timer.h
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@@ -1,15 +0,0 @@
#ifndef TIMER_H
#define TIMER_H
#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)
#endif // TIMER_H

1
module02/ex00/utils.h
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@@ -11,5 +11,6 @@
// mathematics
#define PERCENT(percent, total) (((float)percent / 100) * total)
#define DIV_ROUND_CLOSEST(n, d) ((((n) < 0) == ((d) < 0)) ? (((n) + (d)/2)/(d)) : (((n) - (d)/2)/(d)))
#endif // UTILS_H