int MG2639_Cell::readWaitForResponses(const char * goodRsp,
const char * failRsp, unsigned int timeout)
{
unsigned long timeIn = millis(); // Timestamp coming into function
unsigned int received = 0; // received keeps track of number of chars read
clearBuffer(); // Clear the class receive buffer (rxBuffer)
while (timeIn + timeout > millis()) // While we haven't timed out
{
if (dataAvailable()) // If data is available on UART RX
{
// Increment received count & read byte to buffer
received += readByteToBuffer();
if (searchBuffer(goodRsp))
return received; // If we've received [goodRsp], return received
if (searchBuffer(failRsp)) // If we've received [failRsp]
return ERROR_FAIL_RESPONSE; // return FAIL response error code
}
}
if (received > 0) // If we received any characters
return ERROR_UNKNOWN_RESPONSE; // Return unkown response error code
else // If we haven't received any characters
return ERROR_TIMEOUT; // Return the timeout error code
}
int16_t ESP8266Class::readForResponse(const char * rsp, unsigned int timeout)
{
unsigned long timeIn = millis(); // Timestamp coming into function
unsigned int received = 0; // received keeps track of number of chars read
clearBuffer(); // Clear the class receive buffer (esp8266RxBuffer)
while (timeIn + timeout > millis()) // While we haven't timed out
{
if (_serial->available()) // If data is available on UART RX
{
received += readByteToBuffer();
if (searchBuffer(rsp)) // Search the buffer for goodRsp
return received; // Return how number of chars read
}
}
if (received > 0) // If we received any characters
return ESP8266_RSP_UNKNOWN; // Return unkown response error code
else // If we haven't received any characters
return ESP8266_RSP_TIMEOUT; // Return the timeout error code
}
int MG2639_Cell::changeBaud(unsigned long from, unsigned long to)
{
int iRetVal;
char changeBaudCmd[14];
memset(changeBaudCmd, 0, 14);
// Print something like "AT+IPR=9600" to changeBaudCmd string
sprintf(changeBaudCmd, "%s=%lu", SET_BAUD_RATE, to);
initializeUART(from); // Set UART baud to [from] baud
sendATCommand((const char *)changeBaudCmd); // Send the baud change command
// SoftwareSerial included with Arduino 1.6.1+ is drastically improved.
// We can reliably send strings at 115200
#if (ARDUINO >= 10601)
iRetVal = readWaitForResponse(RESPONSE_OK, COMMAND_RESPONSE_TIME);
initializeUART(to); // Set SS UART to [to] baud rate
return iRetVal;
#else
// Earlier versions of SS can't reliably read, but we should be able
// to tell the difference between "ERROR" and "OK" due to the size
// of the received string.
unsigned long timeIn = millis();
unsigned long timeout = 10; // Set timeout to 10ms
int received = 0;
clearBuffer(); // Clear rxBuffer
while (timeIn + timeout > millis()) // Check for a timeout
{
if (dataAvailable()) // If data available on UART
{
received += readByteToBuffer(); // Read it into rxBuffer, inc received
}
}
initializeUART(to); // Set SS UART to [to] baud rate
return received; // Return number of characters received
#endif
}
