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ex01 mod04 not stable

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hugo LAMY
2025-03-10 17:27:05 +01:00
parent 768054d6c2
commit 9bae6d3f49
11 changed files with 191 additions and 3 deletions
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1
module04/ex00 copy/Makefile Normal file
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@@ -0,0 +1 @@
include ../../Makefile

61
module04/ex00 copy/bitmanip.h Normal file
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#ifndef BITMANIP_H
#define BITMANIP_H
#include "utils.h"
// Bit operations 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)))
// Get arguments from tuple-like definitions
#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 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))
#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)
#define PULLUP_ON(elem) SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define PULLUP_OFF(elem) CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
// Bit definitions
#define D1 0
#define D2 1
#define D3 2
#define D4 4
#define SW1 2
#define SW2 4
#define D5B 3
#define D5R 5
#define D5G 6
// 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)
#define RGB5_BLUE (D, D5B)
#define RGB5_RED (D, D5R)
#define RGB5_GEEN (D, D5G)
#endif // BITMANIP_H

17
module04/ex00 copy/header.h Normal file
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#ifndef HEADER_H
#define HEADER_H
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include "utils.h"
#include "bitmanip.h"
#include "interrupt.h"
//
// PROTOTYPES
//
// main.c
#endif // HEADER_H

8
module04/ex00 copy/interrupt.h Normal file
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#ifndef INTERRUPT_H
#define INTERRUPT_H
// 7.3.1 : SREG – AVR Status Register
#define ENABLE_GLOBAL_INTERRUPT (1<<SREG_I)
#define DISABLE_GLOBAL_INTERRUPT (0<<SREG_I)
#endif // INTERRUPT_H

43
module04/ex00 copy/main.c Normal file
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#include "header.h"
// 14.3.3 : alternate functions on port D
// PD2 : - INT0 (External Interrupt 0 Input)
// - PCINT18 (Pin Change Interrupt 18)
// 12.4 : Interrupt Vectors in ATmega328 and ATmega328P
// - INT0 : External Interrupt Request 0
typedef enum {
DOWN,
UP
} State;
volatile uint8_t button_state = UP;
// Table 13-2 : interrupt types
#define INT0_LOW ((0 << ISC01) | (0 << ISC01))
#define INT0_LOGICAL ((0 << ISC01) | (1 << ISC01))
#define INT0_FALLING ((1 << ISC01) | (0 << ISC01))
#define INT0_RAISING ((1 << ISC01) | (1 << ISC01))
// use interruption to change led1 state when button1 is pressed
int main() {
MODE_OUTPUT(LED1);
CLEAR_ELEM(LED1);
MODE_INPUT(BUTTON1);
PULLUP_ON(BUTTON1);
SREG |= ENABLE_GLOBAL_INTERRUPT;
EIMSK = (1 << INT0); // 13.2.2 : Enable INT0 interrupt (EIMSK – External Interrupt Mask Register)
EICRA = INT0_LOGICAL; // Table 13-2 : trigger type (EICRA – External Interrupt Control Register A)
while (1);
}
ISR(INT0_vect) {
_delay_ms(50);
button_state = (button_state == UP) ? DOWN : UP;
if (button_state == UP) {
TOGGLE_ELEM(LED1);
}
// EIFR = (1 << INTF0); // 13.2.3 : clear flag, why ? i think it only indicates that a trigger event has occured
}

0
module04/ex00/timer.h → module04/ex00 copy/timer.h
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0
module04/ex00/usart.h → module04/ex00 copy/usart.h
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23
module04/ex00 copy/utils.h Normal file
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#ifndef UTILS_H
#define UTILS_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)
// 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)))
// text
#define SWITCH_CASE(ch) (((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') ? ((ch) ^ (1 << 5)) : (ch))
// boolean
#define TRUE 1
#define FALSE 0
#endif // UTILS_H

2
module04/ex00/bitmanip.h
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@@ -33,6 +33,8 @@
#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)
#define PULLUP_ON(elem) SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
#define PULLUP_OFF(elem) CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
// Bit definitions
#define D1 0

2
module04/ex00/header.h
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@@ -6,9 +6,7 @@
#include <avr/interrupt.h>
#include "utils.h"
#include "timer.h"
#include "bitmanip.h"
#include "usart.h"
#include "interrupt.h"
//

37
module04/ex00/main.c
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@@ -1,8 +1,43 @@
#include "header.h"
// 14.3.3 : alternate functions on port D
// PD2 : - INT0 (External Interrupt 0 Input)
// - PCINT18 (Pin Change Interrupt 18)
// 12.4 : Interrupt Vectors in ATmega328 and ATmega328P
// - INT0 : External Interrupt Request 0
// led RGB D5 must turns on in a loop of colors using PWM
typedef enum {
DOWN,
UP
} State;
volatile uint8_t button_state = UP;
// Table 13-2 : interrupt types
#define INT0_LOW ((0 << ISC01) | (0 << ISC01))
#define INT0_LOGICAL ((0 << ISC01) | (1 << ISC01))
#define INT0_FALLING ((1 << ISC01) | (0 << ISC01))
#define INT0_RAISING ((1 << ISC01) | (1 << ISC01))
// use interruption to change led1 state when button1 is pressed
int main() {
MODE_OUTPUT(LED1);
CLEAR_ELEM(LED1);
MODE_INPUT(BUTTON1);
PULLUP_ON(BUTTON1);
SREG |= ENABLE_GLOBAL_INTERRUPT;
EIMSK = (1 << INT0); // 13.2.2 : Enable INT0 interrupt (EIMSK – External Interrupt Mask Register)
EICRA = INT0_LOGICAL; // Table 13-2 : trigger type (EICRA – External Interrupt Control Register A)
while (1);
}
ISR(INT0_vect) {
_delay_ms(50);
button_state = (button_state == UP) ? DOWN : UP;
if (button_state == UP) {
TOGGLE_ELEM(LED1);
}
// EIFR = (1 << INTF0); // 13.2.3 : clear flag, why ? i think it only indicates that a trigger event has occured
}