C++ (Cpp) TWI_WaitByteReceived Examples

Example #1

File: Wire.cpp Project: ektor5/Arduino

uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint32_t iaddress, uint8_t isize, uint8_t sendStop) {
	if (quantity > BUFFER_LENGTH)
		quantity = BUFFER_LENGTH;

	// perform blocking read into buffer
	int readed = 0;
	TWI_StartRead(twi, address, iaddress, isize);
	do {
		// Stop condition must be set during the reception of last byte
		if (readed + 1 == quantity)
			TWI_SendSTOPCondition( twi);

		if (TWI_WaitByteReceived(twi, RECV_TIMEOUT))
			rxBuffer[readed++] = TWI_ReadByte(twi);
		else
			break;
	} while (readed < quantity);
	TWI_WaitTransferComplete(twi, RECV_TIMEOUT);

	// set rx buffer iterator vars
	rxBufferIndex = 0;
	rxBufferLength = readed;

	return readed;
}

Example #2

File: Wire.cpp Project: chrishamm/ArduinoDuet

uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity) {
	if (quantity > BUFFER_LENGTH)
	{
		quantity = BUFFER_LENGTH;
	}

	// perform blocking read into buffer
	int readed = 0;
	TWI_StartRead(twi, address, 0, 0);
	do {
		// Stop condition must be set during the reception of last byte
		if (readed + 1 == quantity)
		{
			TWI_SendSTOPCondition( twi);
		}

		TWI_WaitByteReceived(twi, RECV_TIMEOUT);
		rxBuffer[readed++] = twi_read_byte(twi);
	} while (readed < quantity);
	TWI_WaitTransferComplete(twi, RECV_TIMEOUT);

	// set rx buffer iterator vars
	rxBufferIndex = 0;
	rxBufferLength = readed;

	return readed;
}