#include<reg51.h> void boud_rate() { SCON = 0x50; TMOD = 0x20; /* timer 1, mode 2, 8-bit reload */ TH1 = 0xFD; /* reload value for 2400 baud */ TR1 = 1; TI = 1; } char serial_receive() { char chr; /* variable to hold the new character */ while (RI != 1) {;} chr = SBUF; RI = 0; return(chr); } void main(void) { boud_rate(); unsigned char rx_data; for(;;) { rx_data = serial_receive(); switch(rx_data) { // case '1': open_door(); case 0067892341 : open_door(); break; // case '9': open_door(); case 0045780034 : open_door(); break; default: dont_open(); } proper_delay(); } }
errors
'rx_data':undefined identifier illigal octal digit
please tell me how to overcum these errors
I thought the strings from the RFID reader ended with a newline. If so - how do you handle the line breaks?
And what is the result of your debugging? Soon one month later. Own time debugging the individual parts of the program would have made you finish this project about three weeks ago. Of course, that would have required you to take regular looks in a book about the C language, when the debugger showed you that a statement didn't do what you thought it would do.
Own time debugging the individual parts of the program ... take regular looks in a book about the C language if you need to do that then what are fora for?
Of course, I AM being Ironic.
Erik