Klaus Schulze Mirage Rar. Download Keramat 2009 Indowebster. Comunicacion Serial Rs232 Pic Ccs. Trainz 2009 Sp2 Serial. Sandra Nasic The Signal Rar Files. CCS C Compiler Example Programs Full List of Example Files. The CCS C compiler includes a library of example programs for many common applications. Each example program contains a header with instructions on how to run the example, and if necessary, the.
I’m trying to incorporate a PIC chip into my next Arduino project so that I can send serial data back and forth between the two. I’m using the PIC16F690 that comes with the PICkit2 programmer/Low Pin Count demo board from Microchip.
The first step is trying to figure out how to get serial data out of the PIC. Right now I’m just using the Arduino as a USB serial interface. It should just pass any serial data it gets over to the serial monitor inside the IDE. The following code is for that. Does this look correct?
So this should be able to pass any serial data received on the RX pin to the serial monitor.
The next step is setting up the PIC chip. For some reason, I can’t get results that make any sense out of the PIC. Here’s my code written with the CCS C compiler for the midrange PIC devices:
The output I get in the serial monitor is as follows:
and so on. The “11” at the end of the second line is noise from where I plug the PIC into the arduino. I remove it when I’m programming the arduino because I’m scared it’ll fry the PIC somehow.
So the question is: Why isn’t the output on the lines after the first two correct? The incoming serial data should be the same.
Do I need a hex inverter on the PIC chips output for the serial data to be correct? Inverting the output in the PIC code didn’t seem to work. Or does it have to do with some difference between CMOS and TTL that I’m missing?
Any help on this would be great. I’ll write up a little tutorial for it if I get it working.
Thanks!
jamis
The microcontroller PIC16F887 has a build in USART (Universal Synchronous/Asynchronous Receiver/Transmitter) module. This module can be used as UASAT or UART.
This small post shows an example for the usage of the UART protocol with PIC16F887 microcontroller.
Hardware Required:
Serial Rs232 Cable
- PIC16F887 microcontroller
- MAX232 — datasheet
- 4 x 10uF polarized capacitor
- Female COM port
- Breadboard
- 5V power source
- Jumper wires
UART Example for PIC16F887 circuit:
In this example the microcontroller PIC16F887 uses its internal oscillator and MCLR pin function is disabled.
The female COM port is connected to the PC using RS232 cable, this cable has to be male-female because the PC COM port is male.
UART Example for PIC16F887 CCS C code:
The code used in this example is shown below.
The function #use rs232(UART1, baud = 9600) is used to configure the UART protocol. Here the hardware UART module is used. If the pins TX and RX (RC6 and RC7) are used by an other application we can use software UART. Software UART is generated by the compiler with the same previous function. For example TX is mapped to pin RD0 and RX to pin RD1:
#use rs232(xmit = PIN_D0, rcv = PIN_D0, baud = 9600)
where 9600 is the baud rate.
The functions used in the C code are:
printf: sends a string of characters over RS232 transmission pin (TX).
putc: send a character over RS232 transmission pin (TX).
if(kbhit()): test if a character is ready for getc() function.
getc(): read the character.