init mod03 ex02

module03/ex02/Makefile

@@ -0,0 +1 @@
+include ../../Makefile

module03/ex02/bitmanip.h

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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)
+
+// 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

module03/ex02/main.c

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+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+#include "utils.h"
+#include "bitmanip.h"
+
+
+void rgb_d5_roll_colors() {
+	MODE_OUTPUT(RGB5_RED);
+	MODE_OUTPUT(RGB5_GEEN);
+	MODE_OUTPUT(RGB5_BLUE);
+	while(1) {
+		// RED
+		PORTD = (1<<D5R) | (0<<D5G) | (0<<D5B);
+		_delay_ms(1000);
+		// GREEN
+		PORTD = (0<<D5R) | (1<<D5G) | (0<<D5B);
+		_delay_ms(1000);
+		// BLUE
+		PORTD = (0<<D5R) | (0<<D5G) | (1<<D5B);
+		_delay_ms(1000);
+		// YELLOW
+		PORTD = (1<<D5R) | (1<<D5G) | (0<<D5B);
+		_delay_ms(1000);
+		// CYAN
+		PORTD = (0<<D5R) | (1<<D5G) | (1<<D5B);
+		_delay_ms(1000);
+		// MAGENTA
+		PORTD = (1<<D5R) | (0<<D5G) | (1<<D5B);
+		_delay_ms(1000);
+		// WHITE
+		PORTD = (1<<D5R) | (1<<D5G) | (1<<D5B);
+		_delay_ms(1000);
+	}
+}
+
+// led RGB D5 must turns on in a loop of colors: red, green, blue, yellow, cyan, magenta, white
+int main() {
+
+	while(1) {
+		rgb_d5_roll_colors();
+	}
+}

module03/ex02/utils.h

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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