i need to know about how to interface an 8051 microcontroller with RXQ1 transceiver. i'd like to know how to connect them (through which ports of the microcontroller) and if possible i need a program in Assembly that read from switches (on\off) and send this data to the transceiver to send this data through antenna. asap please
How do you connect the transmitter to your microcontroller? The datasheet gives a good example on page 11/figure 8. If you use figure 7 you should disable the serial receiver of the microcontroller while CD is high, othertwise the uart will receive the noise. Once the hardware interface is done, you cannot send any character via UART. Example for machester coding if you want to send 0x41 (Ascii A) binary format is 0100 0001 Your firmware converts every 0 into 01 and every 1 into 10. 0x4=0100 => 01100101=0x65 0x1=0001 => 01010110=0x56 Your firmware then transmits both 0x65 and 0x56. Gunnar