/**
* Implementing the CHAR dev write API.
*
* Note, this doesn't implement ulFlags specific options yet!
**/
static BT_ERROR i2cWrite(BT_HANDLE hI2C, BT_u16 usDevice, BT_u8 *pucSource, BT_u32 ulLength) {
BT_ERROR Error = BT_ERR_NONE;
i2cStart(hI2C);
Error = i2cSendAddress(hI2C, usDevice, BT_I2C_WRITE_ACCESS);
if (Error) goto err_out;
Error = i2cSendData(hI2C, pucSource, ulLength);
if (Error) goto err_out;
Error = i2cStop(hI2C);
return Error;
err_out:
i2cStop(hI2C);
return Error;
}
static BT_ERROR i2cRead(BT_HANDLE hI2C, BT_u16 usDevice, BT_u8 *pucDest, BT_u32 ulLength) {
BT_ERROR Error = BT_ERR_NONE;
i2cStart(hI2C);
Error = i2cSendAddress(hI2C, usDevice, BT_I2C_READ_ACCESS);
if (Error) goto err_out;
Error = i2cGetData(hI2C, pucDest, ulLength);
if (Error) goto err_out;
Error = i2cStop(hI2C);
return Error;
err_out:
i2cStop(hI2C);
return Error;
}
void i2cWrite(uint8_t device, uint8_t address, uint8_t *data, uint8_t length)
{
i2cSendAddress(device, WRITE, address);
int i;
for(i = 0; i<length; i++)
{
/* Send data through I2C bus */
I2C_BUS->DR = *data;
data++;
/* Test on EV8 and clear it */
while(!I2C_CheckEvent(I2C_BUS, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
}
/* Send STOP condition */
I2C_GenerateSTOP(I2C_BUS, ENABLE);
}
void i2cRead(uint8_t device, uint8_t address, uint8_t *data, uint8_t length)
{
i2cSendAddress(device, READ, address);
int i;
for(i = 0; i<length; i++)
{
/* Test on EV7 and clear it */
while(!I2C_CheckEvent(I2C_BUS, I2C_EVENT_MASTER_BYTE_RECEIVED));
*data = I2C_ReceiveData(I2C_BUS);
data++;
/* Disable Acknowledgement */
if(!(i < (length - 1)))
I2C_AcknowledgeConfig(I2C_BUS, DISABLE);
}
/* Send STOP Condition */
I2C_GenerateSTOP(I2C_BUS, ENABLE);
}