Void cycleLED(UArg arg0, UArg arg1)
{
unsigned int i = 0;
uint8_t writeBuffer[4];
I2C_Handle handle;
I2C_Params i2cparams;
I2C_Transaction i2c;
I2C_Params_init(&i2cparams);
i2cparams.bitRate = I2C_400kHz;
handle = I2C_open(Board_I2C_TPL0401, &i2cparams);
if (handle == NULL) {
System_abort("I2C was not opened");
}
i2c.slaveAddress = Board_TPL0401_ADDR;
i2c.readCount = 0;
i2c.readBuf = NULL;
i2c.writeBuf = writeBuffer;
/* Enable the PWM oscillator */
writeBuffer[0] = 0x00;
writeBuffer[1] = 0x81;
i2c.writeCount = 2;
if (!I2C_transfer(handle, &i2c)) {
GPIO_write(Board_LED1, Board_LED_ON);
System_abort("Bad I2C transfer!");
}
/* Bring the LEDs into PWM mode */
writeBuffer[0] = 0x8C;
writeBuffer[1] = 0xAA;
writeBuffer[2] = 0xAA;
i2c.writeCount = 3;
if (!I2C_transfer(handle, &i2c)) {
GPIO_write(Board_LED1, Board_LED_ON);
System_abort("Bad I2C transfer!");
}
i2c.writeCount = 4;
while (true) {
/* Point to the new LED pattern */
i2c.writeBuf = (uint8_t *) &(rgbcmd[i]);
if (!I2C_transfer(handle, &i2c)) {
GPIO_write(Board_LED1, Board_LED_ON);
System_abort("Bad I2C transfer!");
}
/* Reached the end of the RGB patterns; reset index */
if (rgbcmd[++i].LED == 0x00) {
i = 0;
}
Task_sleep(100);
}
}
uint8_t TwoWire::endTransmission(uint8_t sendStop)
{
bool ret;
WireContext *wc = getWireContext();
if (i2c == NULL) {
return (4); /* 4 = 'other error' */
}
ret = I2C_transfer(i2c, &(wc->i2cTransaction));
wc->txWriteIndex = 0;
wc->i2cTransaction.writeCount = 0;
wc->rxReadIndex = 0; //i2cTransaction will overwrite buffer staring at 0
wc->rxWriteIndex = wc->i2cTransaction.readCount;
wc->i2cTransaction.readCount = 0;
if (sendStop) {
wc->idle = true;
}
if (gateEnterCount) {
GateMutex_leave(GateMutex_handle(&gate), --gateEnterCount);
}
/* success = 0; 4 = other error */
return (ret ? 0 : 4);
}
//
// Burst read from an I2C device
//
bool bspI2cRead(uint8_t *data, uint8_t len)
{
masterTransaction.writeCount = 0;
masterTransaction.writeBuf = NULL;
masterTransaction.readCount = len;
masterTransaction.readBuf = data;
masterTransaction.slaveAddress = slaveAddr;
return I2C_transfer(I2Chandle, &masterTransaction) == TRUE;
}
//
// Write and read in one operation
//
bool bspI2cWriteRead(uint8_t *wdata, uint8_t wlen, uint8_t *rdata, uint8_t rlen)
{
masterTransaction.writeCount = wlen;
masterTransaction.writeBuf = wdata;
masterTransaction.readCount = rlen;
masterTransaction.readBuf = rdata;
masterTransaction.slaveAddress = slaveAddr;
return I2C_transfer(I2Chandle, &masterTransaction) == TRUE;
}
/*******************************************************************************
* @fn i2c_escribe
* @brief Escribe por i2c
* @param pbuf - Puntero al Buffer
* @param nBits - Número de bits
* @return ok
*/
bool i2c_escribe(uint8_t *pbuf, uint8_t nBits)
{
I2C_Transaction masterTransaction;
masterTransaction.writeCount = nBits;
masterTransaction.writeBuf = pbuf;
masterTransaction.readCount = 0;
masterTransaction.readBuf = NULL;
masterTransaction.slaveAddress = slaveAddr;
return I2C_transfer(i2cHandle, &masterTransaction) == TRUE;
}
/*******************************************************************************
* @fn i2c_escribe_lee
* @brief Lee y escribe
* @param pBufTx - Buffer Tx
* @param nBytesTx - Bytes Tx
* @param pBufRx - Buffer Rx
* @param nBytesRx - Bytes Rx
* @return ok
*/
bool i2c_escribe_lee(uint8_t *pBufTx, uint8_t nBytesTx, uint8_t *pBufRx, uint8_t nBytesRx)
{
I2C_Transaction masterTransaction;
masterTransaction.writeCount = nBytesTx;
masterTransaction.writeBuf = pBufTx;
masterTransaction.readCount = nBytesRx;
masterTransaction.readBuf = pBufRx;
masterTransaction.slaveAddress = slaveAddr;
return I2C_transfer(i2cHandle, &masterTransaction) == TRUE;
}
//
// Burst write to an I2C device
//
bool HalI2CWrite(uint8_t *data, uint8_t len)
{
bool fSuccess;
#ifdef TI_DRIVERS_I2C_INCLUDED
I2C_Transaction masterTransaction;
masterTransaction.writeCount = len;
masterTransaction.writeBuf = data;
masterTransaction.readCount = 0;
masterTransaction.readBuf = NULL;
masterTransaction.slaveAddress = slaveAddr;
fSuccess = I2C_transfer(I2Chandle, &masterTransaction);
#endif
return fSuccess;
}
//
// Write and read in once operation
//
bool HalI2CWriteRead(uint8_t *wdata, uint8_t wlen, uint8_t *rdata, uint8_t rlen)
{
bool fSuccess;
#ifdef TI_DRIVERS_I2C_INCLUDED
I2C_Transaction masterTransaction;
masterTransaction.writeCount = wlen;
masterTransaction.writeBuf = wdata;
masterTransaction.readCount = rlen;
masterTransaction.readBuf = rdata;
masterTransaction.slaveAddress = slaveAddr;
fSuccess = I2C_transfer(I2Chandle, &masterTransaction);
#endif
return fSuccess;
}
Void Task_I2C(UArg arg0, UArg arg1)
{
I2C_Handle i2c;
I2C_Params i2cParams;
I2C_Transaction i2cTransaction;
uint8_t txBuffer[4];
uint8_t rxBuffer[4];
I2C_Params_init(&i2cParams);
i2cParams.bitRate = I2C_400kHz;
i2cParams.transferMode = I2C_MODE_BLOCKING;
i2c = I2C_open(Board_I2C_NFC, &i2cParams);
if (i2c == NULL) {
System_abort("Error Initializing I2C\n");
}
else {
System_printf("\nTask_I2C");
}
i2cTransaction.slaveAddress = 0x17;
for (;;) {
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = sizeof(txBuffer);
i2cTransaction.readCount = 0;
txBuffer[0]=1;
txBuffer[1]=2;
txBuffer[2]=3;
txBuffer[3]=4;
if (!I2C_transfer(i2c, &i2cTransaction)) {
System_printf("Bad I2C transfer!");
}
Task_sleep(200); //One Tick is 1ms
}
}
uint8_t BH1750_init(void){
uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE;
i2c_BH1750_Transaction.slaveAddress = BH1750_SLAVE_ADDRESS_1;
i2c_BH1750_Transaction.writeBuf = txBH1750_Buffer;
i2c_BH1750_Transaction.writeCount = 1;
i2c_BH1750_Transaction.readBuf = rxBH1750_Buffer;
i2c_BH1750_Transaction.readCount = 0;
//txBH1750_Buffer[0] = BH1750_POWER_ON;
//I2C_transfer(i2c, &i2c_BH1750_Transaction);
//__delay_ms(100);
switch (mode) {
case BH1750_CONTINUOUS_HIGH_RES_MODE:
case BH1750_CONTINUOUS_HIGH_RES_MODE_2:
case BH1750_CONTINUOUS_LOW_RES_MODE:
case BH1750_ONE_TIME_HIGH_RES_MODE:
case BH1750_ONE_TIME_HIGH_RES_MODE_2:
case BH1750_ONE_TIME_LOW_RES_MODE:
txBH1750_Buffer[0] = mode;
I2C_transfer(i2c, &i2c_BH1750_Transaction);
//__delay_ms(120);
break;
default:
break;
}
return 1;
}
uint16_t get_BH1750_LightLevel(void){
uint16_t level;
//BH1750_init();
i2c_BH1750_Transaction.slaveAddress = BH1750_SLAVE_ADDRESS_1;
i2c_BH1750_Transaction.writeBuf = txBH1750_Buffer;
i2c_BH1750_Transaction.writeCount = 1;
i2c_BH1750_Transaction.readBuf = rxBH1750_Buffer;
i2c_BH1750_Transaction.readCount = 2;
txBH1750_Buffer[0] = BH1750_CONTINUOUS_HIGH_RES_MODE;
I2C_transfer(i2c, &i2c_BH1750_Transaction);
level = rxBH1750_Buffer[0];
level <<= 8;
level |= rxBH1750_Buffer[1];
level /= 1.2;
return level;
}
