/**
* Implementation of the readBlock Function of the 24C512 chip.
* @see eeprom.h
* @private
*/
void _readEeprom24C512Block(Eeprom* eeprom_, unsigned long index, unsigned int length, Buffer* buffer){
I2cBusConnection* i2cBusConnection = _24c512GetI2cBusConnection(eeprom_);
I2cBus* i2cBus = i2cBusConnection->i2cBus;
portableMasterWaitSendI2C(i2cBusConnection);
portableMasterWaitSendI2C(i2cBusConnection);
portableMasterStartI2C(i2cBusConnection);
WaitI2C(i2cBus);
unsigned int blockAddress = get24C512BlockAddress(index);
portableMasterWriteI2C(i2cBusConnection, blockAddress);
WaitI2C(i2cBus);
unsigned int msbaddress = index >> 8;
unsigned int lsbaddress = index & 0xFFFF;
portableMasterWriteI2C(i2cBusConnection, msbaddress);
WaitI2C(i2cBus);
portableMasterWriteI2C(i2cBusConnection, lsbaddress);
WaitI2C(i2cBus);
// read the data
portableMasterStartI2C(i2cBusConnection);
WaitI2C(i2cBus);
portableMasterWriteI2C(i2cBusConnection, blockAddress | 0x01);
int i;
for (i = 0; i < length - 1; i++) {
char c = portableMasterReadI2C(i2cBusConnection);
portableMasterAckI2C(i2cBusConnection);
WaitI2C(i2cBus);
bufferWriteChar(buffer, c);
}
char c = portableMasterReadI2C(i2cBusConnection);
portableMasterNackI2C(i2cBusConnection);
WaitI2C(i2cBus);
bufferWriteChar(buffer, c);
portableMasterStopI2C(i2cBusConnection);
WaitI2C(i2cBus);
}
/**
* @private
*/
void fillI2CInputInternalBuffer(InputStream* inputStream) {
while (true) {
I2cBusConnection* i2cBusConnection = _i2cMasterInputStreamGetI2cBusConnection(inputStream);
unsigned char c = i2cMasterReadChar(i2cBusConnection);
if (c == I2C_SLAVE_NO_DATA_IN_READ_BUFFER || c == INCORRECT_DATA) {
break;
}
appendI2cDebugInputChar(c);
Buffer* buffer = _i2cMasterInputStreamGetBuffer(inputStream);
bufferWriteChar(buffer, c);
}
}
void handleUartInterrupt(UART_MODULE uart, Buffer* buffer) {
// Is this an RX interrupt?
if (INTGetFlag(INT_SOURCE_UART_RX(uart))) {
if (UARTReceivedDataIsAvailable(uart)) {
unsigned char c = UARTGetDataByte(uart);
// BUG2018, BUG2019 (255 / 254 value) when Motor Power is too strong
if (c != 'ÿ' && c != 'þ') {
bufferWriteChar(buffer, c);
}
// Clear the RX interrupt Flag
INTClearFlag(INT_SOURCE_UART_RX(uart));
}
}
// We don't care about TX interrupt
if ( INTGetFlag(INT_SOURCE_UART_TX(uart)) ) {
INTClearFlag(INT_SOURCE_UART_TX(uart));
}
}
/**
* Definition of a function which is able to write a character.
*/
void _bufferWriteChar(OutputStream* outputStream, char c) {
Buffer* buffer = (Buffer*) outputStream->object;
bufferWriteChar(buffer, c);
}