//
// Created by FSB-PC on 22.05.2023.
//

#ifndef INC_8_PMW_I2C_H
#define INC_8_PMW_I2C_H

typedef struct {
    uint8_t address; // адрес устройства на шине I2C
    uint8_t data[32]; // буфер для передачи и приема данных
    uint8_t length; // длина передаваемых данных
};

void i2c_begin(i2c_device_t *i2c){
    TWBR = ((F_CPU / i2c->speed) - 16) / 2;
    TWAR = (i2c->address << 1);
}

void i2c_beginTransmission(i2c_device_t *i2c, uint8_t address){
    TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
    while (!(TWCR & (1 << TWINT)));

    TWDR = (address << 1);
    TWCR = (1 << TWINT) | (1 << TWEN);
    while (!(TWCR & (1 << TWINT)));
    i2c->address = address;
}

void i2c_write(i2c_device_t *i2c, uint8_t data){
    TWDR = data;
    TWCR = (1 << TWINT) | (1 << TWEN);
    while (!(TWCR & (1 << TWINT)));
}

void i2c_read(i2c_device_t *i2c, uint8_t *data, uint8_t ack){
    if (ack){
        TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWEA);
    } else {
        TWCR = (1 << TWINT) | (1 << TWEN);
    }
    while (!(TWCR & (1 << TWINT)));
    *data = TWDR;
}

void i2c_endTransmission(i2c_device_t *i2c){
    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
}

void i2c_sendByte(i2c_device_t *i2c, uint8_t address, uint8_t data){
    i2c_beginTransmission(i2c, address);
    i2c_write(i2c, data);
    i2c_endTransmission(i2c);
}



#endif //INC_8_PMW_I2C_H

//void i2c_begin(I2C *i2c) {
//    TWBR = ((F_CPU / i2c->speed) - 16) / 2;
//    TWAR = (i2c->address << 1);
//}
//
//void i2c_beginTransmission(I2C *i2c, uint8_t address) {
//    TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
//    while (!(TWCR & (1 << TWINT)));
//
//    TWDR = (address << 1);
//    TWCR = (1 << TWINT) | (1 << TWEN);
//    while (!(TWCR & (1 << TWINT)));
//    i2c->address = address;
//}
//
//void i2c_write(I2C *i2c, uint8_t data) {
//    TWDR = data;
//    TWCR = (1 << TWINT) | (1 << TWEN);
//    while (!(TWCR & (1 << TWINT)));
//}
//
//void i2c_read(I2C *i2c, uint8_t *data, uint8_t ack) {
//    if (ack) {
//        TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWEA);
//    } else {
//        TWCR = (1 << TWINT) | (1 << TWEN);
//    }
//    while (!(TWCR & (1 << TWINT)));
//    *data = TWDR;
//}
//
//void i2c_endTransmission(I2C *i2c) {
//    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
//}
//
//void sendByte(uint8_t data) {
//    sendByteRaw(data);
//    _writes++;
//    if (_writes >= 16) {
//        endTransm();
//        beginData();
//    }
//}
//
//void sendByteRaw(uint8_t data) {
//    i2c_write(data);
//}
//
//void sendCommand(uint8_t cmd1) {
//    beginOneCommand();
//    sendByteRaw(cmd1);
//    i2c_endTransmission();
//}