From 6fcc0462f5aac61ec5c68b834ad933529af63af0 Mon Sep 17 00:00:00 2001 From: hugo LAMY Date: Mon, 10 Mar 2025 13:28:01 +0100 Subject: [PATCH] init mod03 ex03 --- module03/ex03/Makefile | 1 + module03/ex03/bitmanip.h | 59 ++++++++++++++++++++++++ module03/{ex02 => ex03}/interrupt.h | 0 module03/ex03/main.c | 69 +++++++++++++++++++++++++++++ module03/{ex02 => ex03}/timer.h | 0 module03/{ex02 => ex03}/usart.h | 0 module03/ex03/utils.h | 23 ++++++++++ 7 files changed, 152 insertions(+) create mode 100644 module03/ex03/Makefile create mode 100644 module03/ex03/bitmanip.h rename module03/{ex02 => ex03}/interrupt.h (100%) create mode 100644 module03/ex03/main.c rename module03/{ex02 => ex03}/timer.h (100%) rename module03/{ex02 => ex03}/usart.h (100%) create mode 100644 module03/ex03/utils.h diff --git a/module03/ex03/Makefile b/module03/ex03/Makefile new file mode 100644 index 0000000..2e40cba --- /dev/null +++ b/module03/ex03/Makefile @@ -0,0 +1 @@ +include ../../Makefile \ No newline at end of file diff --git a/module03/ex03/bitmanip.h b/module03/ex03/bitmanip.h new file mode 100644 index 0000000..bf9c297 --- /dev/null +++ b/module03/ex03/bitmanip.h @@ -0,0 +1,59 @@ +#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) + +// 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 \ No newline at end of file diff --git a/module03/ex02/interrupt.h b/module03/ex03/interrupt.h similarity index 100% rename from module03/ex02/interrupt.h rename to module03/ex03/interrupt.h diff --git a/module03/ex03/main.c b/module03/ex03/main.c new file mode 100644 index 0000000..c5f256e --- /dev/null +++ b/module03/ex03/main.c @@ -0,0 +1,69 @@ +#include +#include +#include + +#include "utils.h" +#include "bitmanip.h" + +void init_rgb(); + +void set_rgb(uint8_t r, uint8_t g, uint8_t b); + +void wheel(uint8_t pos) { + pos = 255 - pos; + if (pos < 85) { + set_rgb(255 - pos * 3, 0, pos * 3); + } else if (pos < 170) { + pos = pos - 85; + set_rgb(0, pos * 3, 255 - pos * 3); + } else { + pos = pos - 170; + set_rgb(pos * 3, 255 - pos * 3, 0); + } +} + +// Table 14-9 : Port D Pins Alternate Functions +// OC2B (PD3) : Red +// OC0B (PD5) : Green +// OC0A (PD6) : Blue +void init_rgb() { + MODE_OUTPUT(RGB5_RED); + MODE_OUTPUT(RGB5_GEEN); + MODE_OUTPUT(RGB5_BLUE); + + TCCR0A = 0; // 15.9.1 : Clear Timer0 control register A + TCCR0B = 0; // 15.9.2 : Clear Timer0 control register B + TCCR2A = 0; // Clear Timer2 control register A + + TCCR0A |= (1 << WGM00) | (1 << WGM01); // Table 15-8 : Timer0 in Fast PWM mode + TCCR2A |= (1 << WGM20) | (1 << WGM21); // Table 18-8 : Timer2 in Fast PWM mode + + TCCR0A |= (1 << COM0A1); // Table 15-3 : BLUE - Timer0 Non-inverting mode for Blue (OC0A -> PD6) + TCCR0A |= (1 << COM0B1); // Table 15-6 : GREEN - Timer0 Non-inverting mode for Green (OC0B -> PD5) + TCCR2A |= (1 << COM2B1); // Table 18-6 : RED - Timer2 Non-inverting mode for Red (OC2B -> PD3) + + TCCR0B |= (1 << CS01); // Table 15-9 : Prescaler 8 → ~8kHz PWM frequency + TCCR2B |= (1 << CS21); // Table 18-9 : Prescaler 8 → ~8kHz PWM frequency + + OCR0A = 0; // Blue OFF + OCR0B = 0; // Green OFF + OCR2B = 0; // Red OFF +} + +void set_rgb(uint8_t r, uint8_t g, uint8_t b) { + OCR2B = r; // Red (PD3, Timer2 OCR2B) + OCR0B = g; // Green (PD5, Timer0 OCR0B) + OCR0A = b; // Blue (PD6, Timer0 OCR0A) +} + +// led RGB D5 must turns on in a loop of colors using PWM +int main() { + init_rgb(); + + uint8_t pos = 0; + while (1) { + wheel(pos); // Set color based on wheel position + _delay_ms(10); // Small delay for smooth transition + pos++; // Increment color position + } +} diff --git a/module03/ex02/timer.h b/module03/ex03/timer.h similarity index 100% rename from module03/ex02/timer.h rename to module03/ex03/timer.h diff --git a/module03/ex02/usart.h b/module03/ex03/usart.h similarity index 100% rename from module03/ex02/usart.h rename to module03/ex03/usart.h diff --git a/module03/ex03/utils.h b/module03/ex03/utils.h new file mode 100644 index 0000000..1dfefcb --- /dev/null +++ b/module03/ex03/utils.h @@ -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 \ No newline at end of file