void data_received(unsigned char src_address, unsigned char dst_address, unsigned char command, char* data, unsigned char size)
{
if (command == CLUNET_COMMAND_TIME && size >= 6) // Синхронизация времени
{
set_time(data[3]+1900, data[4], data[5], data[0],data[1],data[2]);
}
else if (command == CLUNET_COMMAND_INTERCOM_MODE_REQUEST) // У нас запрашивают режим
{
send_current_mode(src_address);
}
else if (command == CLUNET_COMMAND_INTERCOM_MODE_SET) // Установка режима
{
if (size >= 1 && (unsigned char)data[0] != 0xFF) mode_current = data[0];
if (size >= 2 && (unsigned char)data[1] != 0xFF) mode_temp = data[1];
save_mode();
}
else if (command == CLUNET_COMMAND_INTERCOM_RECORD_REQUEST) // Передача записей
{
if (size == 4) transfer_start(*((unsigned long int*)data), src_address); // Начинаем передачу
else if (size == 1 && data[0] == 1) transfer_ack(); // Подтвержают приём, переходим к следующему куску
else if (size == 1 && data[0] == 0) transfer_stop(); // Прекращение передачи данных
}
}
int gestic_message_write(gestic_t *gestic, void *msg, int size)
{
I2C_MODULE port = gestic->io.I2cPort;
const unsigned char * const buffer = (unsigned char*)msg;
int result = 0;
int i;
GESTIC_ASSERT(buffer[0] == size);
if(transfer_start(port, gestic->io.I2cSlaveAddr, 0))
result = -1;
for(i = 0; !result && i < size; ++i) {
if(transmit_byte(port, buffer[i]) < 0)
result = -1;
if(!I2CByteWasAcknowledged(port))
result = -1;
}
transfer_stop(port);
return result;
}
void* message_read(gestic_t *gestic, int *size)
{
UINT8 RcvCount = 0;
UINT8 writeIndex = 0;
I2C_MODULE port = gestic->io.I2cPort;
unsigned char *result = gestic->io.read_buffer;
// Get TSLine
if(gestic->io.device(GestICDev_TsLine_Get) == 1)
result = NULL;
if(result)
gestic->io.device(GestICDev_TsLine_Assert);
if(result && transfer_start(port, gestic->io.I2cSlaveAddr, 1))
result = NULL;
// Read the data from the desired address
while(result) {
UINT8 i2cbyte;
/* Check for buffer overflow */
if(I2CReceiverEnable(port, TRUE) == I2C_RECEIVE_OVERFLOW) {
result = NULL;
break;
}
while(!I2CReceivedDataIsAvailable(port));
i2cbyte = I2CGetByte(gestic->io.I2cPort);
result[writeIndex] = i2cbyte;
writeIndex++;
if(RcvCount == 0) {
/* Set size if message fits into buffer */
if(i2cbyte < sizeof(gestic->io.read_buffer))
RcvCount = i2cbyte;
else
result = NULL;
}
/* In case of length == 0 or last byte (length == 1) send a NACK */
if(RcvCount == 0 || RcvCount == 1)
I2CAcknowledgeByte(port, FALSE);
else
I2CAcknowledgeByte(port, TRUE);
while(!I2CAcknowledgeHasCompleted( gestic->io.I2cPort ));
RcvCount--;
if(RcvCount <= 0)
break;
}
gestic->io.device(GestICDev_TsLine_Release);
transfer_stop(gestic->io.I2cPort);
if(result && size)
*size = result[0];
return result;
}