Hello, My friend and I are starting a little project on 16F88, with switch after on 16F877A and now we want to use the 18F2520 but some feature of RS232 exchange won't working.
The facts are: We developped a simple flashing Led and RX/TX RS232 code connected to a PC (HyperTerminal). The Led always flashing and a basic loop send is incremental counter on RS232 TX (RC6). The computer receive the loop increment and all working great until the RX pin was activated (RC7->Pin#18). When we trying to send a data from PC to PIC, the Led stop flashing and microcontrolleur seem to reset, after a while, the program look to been restart and the computer display goes on with low increment number (like a begining routine) and Led start flash again. The RX (RC7) seem to act as reset pin ?
We try some configuration (C module), the last one was:
osccon = 0x70;trisb = (0x00); // PortB are outputs
trisa = (0x80); // bit7 input bit6-0 are outputs
trisc = (0x00);
latb=(0xff);
lata=(0xff);
latc=(0xff);
clear_bit(sspcon1, 5);//0 = Disables serial port and configures these pins as I/O port pins
clear_bit(baudcon, 1);//WUE
clear_bit(baudcon, 0);//ABDEN
set_bit(rcon, 7);//IPEN
set_bit(intcon, 7);//GIE GIEH
set_bit(intcon, 6);//PEIE GIEL
set_bit(pie1, 5);//RCIE
Can anybody help us ? Thanks.
