PIC16F877A UART example with CCS C
This is a small example shows how to use PIC16F877A UART module using CCS PIC C compiler.PIC16F877A UART connection circuit schematic:
Pin RC6 (TX) and pin RC7 (RX) are used for the UART (serial) communication between the microcontroller and the computer. To change between TTL logic levels (5V) and RS232 signals (+/-12V), an IC is needed which is max232.
Don't connect TX and RX pins directly to an RS232 serial port which may damage your microcontroller.
CCS C compiler serial monitor can be used to communicate with the microcontroller.
This is the full C code for this example.
// PIC16F877A UART example with CCS C // http://ccspicc.blogspot.com/ // electronnote@gmail.com #include <16F877A.h> #fuses HS,NOWDT,NOPROTECT,NOLVP #use delay(clock = 8000000) #use rs232(uart1, baud = 9600) // Initialize UART module char i; void main(){ putc(13); // Go to first column printf("Hello world!"); // UART write delay_ms(5000); // Wait 5 seconds putc(13); // Go to first column putc(10); // Start a new line printf("PIC16F877A UART example"); // UART Write putc(13); // Go to first column putc(10); // Start a new line while(TRUE){ if(kbhit()){ // If data has been received i = getc(); // UART read putc(i); // Send it back } } }
PIC16F877A UART example video:
