short comGet (u8 comCh)
comCh : Channel number |
returns 0~0xFF if successful, and -1 (0xFFFF) otherwise |
Reads a sing character from the receive buffer for channel comCh. Bytes received are stored in a 255-byte receive buffer. comGet reads from this buffer one byte at a time. The comLen function can be used to see if there is any data in the receive buffer.
The following program echoes received data back to the sender one byte at a time.
#include "moacon500.h" void cmain(void) { short c; openCom(0, 115200, C8N1); // Channel 0, 115200 Baud, data bits: 8, no parity, stop bits: 1 while (1) // Repeat forever { if(comLen(0) > 0) // if data exists in the receive buffer { c = comGet(0); // Get one byte comPut(0,c); // Send byte back to sender } } }