You do not need to remove them, just do not pass them to your processing. How can I remove extra characters (?) from the beginning of received data in codevision? If (rx_wr_index = RX_BUFFER_SIZE) rx_wr_index=0 If (++rx_counter = 0) rx_buffer_overflow=1 special case for receiver buffer size=256 If ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))=0) USART Receiver interrupt service routine Here is USART Receiver interrupt code: //. I mean I had no problem while sending numbers byĪnother microcontroller instead of android applications.Īnd what is received in the serial port of microcontroller: The beginning of the string in the case of existence.
I have to remove these unknown characters from While receiving data such that one or two unknown characters(?) exist at theīeginning of the received string. String array whose maximum length is equal to 10 digits.
Sent by my android app and an android application sends a number in the form of a Which is connected to Bluetooth module HC-05 for attaining an acceptable number
I set a mega16 (16bit AVR microcontroller) to receive data from the serial port
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