/*************************************************************
* @fn Write_Data
*
* @brief This func for read data form slave device
*
* @param uint8 - Address of slave device
*
* @return uint8 - The byte read form the Addr
*/
uint8 Read_Data(uint8 Addr)
{
uint8 Value;
HAL_DISABLE_INTERRUPTS();
I2c_Start(); //make the I2C bus begin
//if((Addr != Last_Addr + 1) || (Addr & 0xFF))
//{
I2c_Write_Byte(0xC8 ); // write address 1100100 and make the R/w with 0
I2c_Ack();
I2c_Write_Byte(Addr);// write register to slaver
I2c_Ack();
I2c_Start(); //repeat make the I2C bus begin
I2c_Write_Byte(0xC9);// write address 1100100 and make the R/w with 1
I2c_Ack();
Value = I2c_Read_Byte(); // we recive the content from slaver
I2c_Stop();
HAL_ENABLE_INTERRUPTS();
return Value;
}
int main(void)
{
_U08 u8Config;
ANCON0 = 0XFF; /*Desactivamos las entradas analógicas*/
ANCON1 = 0XFF; /*Desactivamos las entradas analógicas*/
Gpios_PinDirection(GPIOS_PORTD, 0, GPIOS_INPUT); /*SCL2*/
Gpios_PinDirection(GPIOS_PORTD, 1, GPIOS_INPUT); /*SDA2*/
Gpios_PinDirection(GPIOS_PORTC, 6, GPIOS_OUTPUT); /*puerto de tx uart como salida*/
(void)Uart_Init(UART_PORT1, 115200); /*velocidad a 115200 bauds*/
xdev_out(putChar); /*funcion Uart_PutChar como salida estandar*/
I2c_Init(I2C_PORT2, 100000); /*puerto I2C 2 a 100KHz de velocidad*/
I2c_Start(I2C_PORT2); /*generamos condicion start*/
(void)I2c_bTxByte(I2C_PORT2, ADDR_WRITE(0b1001101)); /*madamos direccion del sensor en modo escritura*/
(void)I2c_bTxByte(I2C_PORT2, 0x01); /*mandamos direccion a leer*/
I2c_RepeatedStart(I2C_PORT2); /*repetimos señal start*/
(void)I2c_bTxByte(I2C_PORT2, ADDR_READ(0b1001101)); /*madmaos direccion del sensor en modo lectura*/
u8Config = I2c_u8RxByte(I2C_PORT2, I2C_NACK); /*leemos dato leido y contestamos NACK*/
I2c_Stop(I2C_PORT2); /*indicamos fin de comunicacion*/
/*mostramos por serial el byte leido el cual tendra el valor de 0x40, indica sensor listo*/
xprintf("Registro config: 0x%X\r\n", (_U16)u8Config);
while (1)
{
/*Escribe aqui tu aplicacion*/
}
}
/*************************************************************
* @fn Write_Data
*
* @brief This func for write words
* We can write 2 byte into register
*
* @param uint8 - Address of slave device
* uint8 - The byte want to be writen
*
* @return none
*/
void Write_Data(uint8 Addr,uint8 Value)
{
I2c_Start(); //make the I2C bus begin
I2c_Write_Byte(0xC8);//master send slaver address
I2c_Ack(); //we can get Ackknowledge from slaver if equal to 0,means right
I2c_Write_Byte(Addr);//master send register to slaver
I2c_Ack();
I2c_Write_Byte(Value);//master send value to slaver
if( I2c_Ack() )
{
I2c_Stop();
// return False;
}
//MicroWait(I2C_DELAY_TIME);
delay_us(3);
I2c_Stop();
}
