usbError SetConfigCallback(void *param)
{
unsigned char *config = (unsigned char *)param;
if ((unsigned)1 == *config) {
SendStatusUpdate();
return USB_SUCCESS;
} else {
return USB_EBADPARM;
}
}
void ProcessReceivedCommands()
{
uint8_t currentChar;
uint8_t idx;
uint8_t cksum;
switch(currentState)
{
case WAIT_FOR_START:
// Read Port
currentChar = Serial.read();
// Go to Next State
if(currentChar == START_CHAR)
{
//Serial.println("Got Start Char");
gCommPacketRX.bytes[0] = currentChar;
currentState = READ_DATA;
}
// Stay Here
else
{
gCommPacketRX.bytes[0] = 0;
currentState = WAIT_FOR_START;
}
break;
case READ_DATA:
// Read 1 less byte since start char already in struct
if(Serial.available() >= sizeof(CommPacket) - 1)
{
//Serial.println("Read Data");
Serial.readBytes((char *)&gCommPacketRX.bytes[1], sizeof(CommPacket) - 1);
currentState = VERIFY_CRC;
}
else
currentState = READ_DATA;
break;
case VERIFY_CRC:
cksum = 0;
for(idx = 0; idx < sizeof(CommPacket) - 1; idx++)
cksum |= gCommPacketRX.bytes[idx];
if(cksum == gCommPacketRX.commStruct.checksum)
{
currentState = PROCESS_VALID_PACKET;
//Serial.println("Valid CRC");
}
else
{
//Serial.println("Invalid CRC");
currentState = WAIT_FOR_START;
}
break;
case PROCESS_VALID_PACKET:
//Serial.println("Processing Packet");
switch(gCommPacketRX.commStruct.messageType)
{
case CMD_GET_STATUS:
SendStatusUpdate();
break;
case CMD_SET_TEMPS:
// Don't save to EEPROM, just RAM
SetTemps(gCommPacketRX.commStruct.params.setTemps, 0);
SendOK();
break;
case CMD_STORE_SETTEMPS:
// Save to RAM and EEPROM
SetTemps(gCommPacketRX.commStruct.params.setTemps, 1);
SendOK();
break;
}
currentState = WAIT_FOR_START;
break;
default:
currentState = WAIT_FOR_START;
break;
}
}
