ICS-Microprocessor-2020/8.Master_I2C_PWM
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add gpio module

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This commit is contained in:
zloihach 2023-06-27 00:54:44 +03:00
parent afa8ca5d02
commit 7bd019cad9
4 changed files with 42 additions and 12 deletions
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22
gpio.c Normal file
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@ -0,0 +1,22 @@
#include "gpio.h"
void setupGPIO() {
DDRC &= ~(1 << PINC0) & ~(1 << PINC1) & ~(1 << PINC2) & ~(1 << PINC3) & ~(1 << PINC4) & ~(1 << PINC5);
PORTC |= (1 << PINC0) | (1 << PINC1) | (1 << PINC2) | (1 << PINC3) | (1 << PINC4) | (1 << PINC5);
}
void setPinOutput(uint8_t pin) {
DDRB |= (1 << pin);
}
void setPinInput(uint8_t pin) {
DDRB &= ~(1 << pin);
}
void setPinHigh(uint8_t pin) {
PORTB |= (1 << pin);
}
void setPinLow(uint8_t pin) {
PORTB &= ~(1 << pin);
}

12
gpio.h Normal file
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@ -0,0 +1,12 @@
#ifndef GPIO_H
#define GPIO_H
#include <avr/io.h>
void setupGPIO();
void setPinOutput(uint8_t pin);
void setPinInput(uint8_t pin);
void setPinHigh(uint8_t pin);
void setPinLow(uint8_t pin);
#endif

15
i2c.c
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@ -6,33 +6,28 @@ void i2c_init() {
void i2c_start() {
TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)))
;
while (!(TWCR & (1 << TWINT)));
}
void i2c_stop() {
TWCR = (1 << TWINT) | (1 << TWSTO) | (1 << TWEN);
while (TWCR & (1 << TWSTO))
;
while (TWCR & (1 << TWSTO));
}
void i2c_write(uint8_t data) {
TWDR = data;
TWCR = (1 << TWINT) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)))
;
while (!(TWCR & (1 << TWINT)));
}
uint8_t i2c_read_ack() {
TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWEA);
while (!(TWCR & (1 << TWINT)))
;
while (!(TWCR & (1 << TWINT)));
return TWDR;
}
uint8_t i2c_read_nack() {
TWCR = (1 << TWINT) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)))
;
while (!(TWCR & (1 << TWINT)));
return TWDR;
}

5
main.c
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@ -2,13 +2,14 @@
#include <avr/interrupt.h>
#include <util/delay.h>
#include "pwm.h"
#include "i2c.h"
#include "gpio.h"
const uint8_t PWM_SLAVE_ADDR = 9;
void setup() {
i2c_init();
DDRC &= ~(1 << PINC0) & ~(1 << PINC1) & ~(1 << PINC2) & ~(1 << PINC3) & ~(1 << PINC4) & ~(1 << PINC5);
PORTC |= (1 << PINC0) | (1 << PINC1) | (1 << PINC2) | (1 << PINC3) | (1 << PINC4) | (1 << PINC5);
setupGPIO();
Serial.begin(9600);
Serial.println("PWM Controller started!");
sendCommand(0x01, 0.0);