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init mod04 ex02

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This commit is contained in:
hugo LAMY
2025-03-12 10:55:55 +01:00
parent fc77fb1749
commit 08dab7e608
9 changed files with 254 additions and 1 deletions
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2
module04/ex01/main.c
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@@ -70,7 +70,6 @@ typedef enum {
} Slope;
volatile uint8_t duty_cycle = T1_DUTY_CYCLE_PERCENT;
volatile Slope slope = UP;
// using TIMER 1
void blink_led_1() {
@@ -119,6 +118,7 @@ int main() {
}
ISR(TIMER0_COMPA_vect) {
volatile static Slope slope = UP;
if (slope == UP) {
if (duty_cycle >= 100) {
duty_cycle = 100;

1
module04/ex02/Makefile Normal file
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@@ -0,0 +1 @@
include ../../Makefile

61
module04/ex02/bitmanip.h Normal file
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@@ -0,0 +1,61 @@
#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 (<pin number> // <pin name>)
#define D1 0 // PB0
#define D2 1 // PB1
#define D3 2 // PB2
#define D4 4 // PB4
#define SW1 2 // PD2
#define SW2 4 // PD4
#define D5B 3 // PD3
#define D5R 5 // PD5
#define D5G 6 // PD6
// 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

20
module04/ex02/header.h Normal file
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@@ -0,0 +1,20 @@
#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"
#include "timer.h"
//
// PROTOTYPES
//
// main.c
void blink_led_1();
void vary_duty();
#endif // HEADER_H

8
module04/ex02/interrupt.h Normal file
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@@ -0,0 +1,8 @@
#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

72
module04/ex02/main.c Normal file
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@@ -0,0 +1,72 @@
#include "header.h"
typedef struct {
int *value;
int max;
int min;
} IncrementParams;
void print_binary(int value) {
int mask_3 = 0b1000;
int bit_at_3 = value & mask_3;
int bit_at_4 = bit_at_3 << 1;
PORTB = (value & 0b111) + bit_at_4;
}
void increment_int(IncrementParams *params) {
int *value = params->value;
int max = params->max;
*value = (*value >= max) ? max : ++(*value);
}
void decrement_int(IncrementParams *params) {
int *value = params->value;
int min = params->min;
*value = (*value <= min) ? min : --(*value);
}
void increment_led(void *param) {
IncrementParams *params = (IncrementParams *)param;
increment_int(params);
print_binary(*(params->value));
}
void decrement_led(void *param) {
IncrementParams *params = (IncrementParams *)param;
decrement_int(params);
print_binary(*(params->value));
}
void on_press(int bit, void (*action)(void*), void *params) {
if ((TEST(PIND, bit)) == 0) {
action(params);
_delay_ms(20);
while ((TEST(PIND, bit)) == 0) {
continue;
}
_delay_ms(20);
}
}
// write a program that increments and decrements a binary number using the buttons, and displays the result on the LEDs
int main() {
MODE_OUTPUT(LED1);
MODE_OUTPUT(LED2);
MODE_OUTPUT(LED3);
MODE_OUTPUT(LED4);
MODE_INPUT(BUTTON1);
MODE_INPUT(BUTTON2);
int value = 0;
int max = 15;
int min = 0;
IncrementParams params = {&value, max};
while(1) {
on_press(SW1, increment_led, &params);
on_press(SW2, decrement_led, &params);
}
}
ISR(TIMER0_COMPA_vect) {
}

37
module04/ex02/timer.h Normal file
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@@ -0,0 +1,37 @@
#ifndef TIMER_H
#define TIMER_H
// table 15-9 : timer 0 prescale sets
#define T0_PRESCALE_SET(value) \
((value) == 1 ? (0<<CS02 | 0<<CS01 | 1<<CS00) : \
(value) == 8 ? (0<<CS02 | 1<<CS01 | 0<<CS00) : \
(value) == 64 ? (0<<CS02 | 1<<CS01 | 1<<CS00) : \
(value) == 256 ? (1<<CS02 | 0<<CS01 | 0<<CS00) : \
(value) == 1024? (1<<CS02 | 0<<CS01 | 1<<CS00) : \
(0<<CS02 | 0<<CS01 | 0<<CS00))
#define TIME_MS(ms, prescale_value) (((F_CPU / prescale_value) * ms) / 1000)
// table 16-5 : timer 1 prescale sets
#define T1_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, prescale_value) (((F_CPU / prescale_value) * ms) / 1000)
// Table 16-4 : Waveform Generation Mode Bit Description
#define CTC_TOP_OCR1A_IN_TCCR1B (0<<WGM13 | 1<<WGM12)
#define CTC_TOP_OCR1A_IN_TCCR1A (0<<WGM11 | 0<<WGM10)
#define CTC_TOP_ICR1_IN_TCCR1B (1<<WGM13 | 1<<WGM12)
#define CTC_TOP_ICR1_IN_TCCR1A (0<<WGM11 | 0<<WGM10)
#define FAST_PWM_TOP_OCR1A_IN_TCCR1B (1<<WGM13 | 1<<WGM12)
#define FAST_PWM_TOP_OCR1A_IN_TCCR1A (1<<WGM11 | 1<<WGM10)
#define FAST_PWM_TOP_ICR1_IN_TCCR1B (1<<WGM13 | 1<<WGM12)
#define FAST_PWM_TOP_ICR1_IN_TCCR1A (1<<WGM11 | 0<<WGM10)
// 16.11.8 : Timer/Counter1 Interrupt Mask Register
#define INTERRUPT_ENABLE_CHANNEL_A (1 << OCIE1A)
#define INTERRUPT_DISABLE_CHANNEL_A (0 << OCIE1A)
#endif // TIMER_H

31
module04/ex02/usart.h Normal file
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@@ -0,0 +1,31 @@
#ifndef USART_H
#define USART_H
#define BAUD_PRESCALER(usart_baudrate) (DIV_ROUND_CLOSEST(F_CPU, (16 * usart_baudrate)) - 1)
// Table 20-8 : Mode Selection (USART Mode SELect)
#define ASYNCHRONOUS (0<<UMSEL01 | 0<<UMSEL00)
#define SYNCHRONOUS (0<<UMSEL01 | 1<<UMSEL00)
// Table 20-9 : Parity Bit Selection (USART Parity Mode)
#define PARITY_DISABLED (0<<UPM01 | 0<<UPM00)
#define PARITY_EVEN (1<<UPM01 | 0<<UPM00)
#define PARITY_ODD (1<<UPM01 | 1<<UPM00)
// Table 20-10 : Stop Bit Selection (USART Stop Bit Select)
#define STOP_ONE_BIT (0<<USBS0)
#define STOP_TWO_BIT (1<<USBS0)
// Table 20-11 : Data Bit Selection (USART Character SiZe)
#define DATA_FIVE_BIT (0<<UCSZ02 | 0<<UCSZ01 | 0<<UCSZ00)
#define DATA_SIX_BIT (0<<UCSZ02 | 0<<UCSZ01 | 1<<UCSZ00)
#define DATA_SEVEN_BIT (0<<UCSZ02 | 1<<UCSZ01 | 0<<UCSZ00)
#define DATA_EIGHT_BIT (0<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
#define DATA_NINE_BIT (1<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
// 20.11.3 : USART Control and Status Register B (UCSRnB)
#define RECEIVER_DISABLED (0<<RXEN0)
#define RECEIVER_ENABLED (1<<RXEN0)
#define TRANSMITTER_DISABLED (0<<TXEN0)
#define TRANSMITTER_ENABLED (1<<TXEN0)
#define INTERRUPT_RECEIVER_DISABLED (0<<RXCIE0)
#define INTERRUPT_RECEIVER_ENABLED (1<<RXCIE0)
#define INTERRUPT_TRANSMITTER_DISABLED (0<<TXCIE0)
#define INTERRUPT_TRANSMITTER_ENABLED (1<<TXCIE0)
#endif // USART_H

23
module04/ex02/utils.h Normal file
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@@ -0,0 +1,23 @@
#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