Hi, first of all: I´m new to coding for PICs. I´m trying to code my very first programm in C. I´m using MPLAB IDE v8.90 with HI-TECH ANSI C-Compiler. I used to code some minor programms in Java so I decided to code in C. Assembler seems very difficult to me. So my question is. I want to configure my PIC16F688 with internal clock so that it lights up and blinks a LED. The coding is not the biggest problem. My problem is the configuration of the PICs Pins (include/header). I hope you guys can help me with this and give me an advices and maybe a description what to do.
Use GOOGLE to look for example projects and learn from them! "PIC16F688" project "Hi-tech" Compiler "PIC16F688" project "Hitech" Compiler "PIC16F688" project "Hi-tech" Compiler mcp "source code" regards
Thank you for the quick answer. I already used google but I cant find anythig which helps me. I just need to configure the pins and how to implement them in code and how to set up the clock Edit: or can you recommend an other IDE or programming tool?
Ok real quick: It seems like you're actually trying, unlike a few other posts I've seen here where the OP is basically asking for someone to design a complete board for them with very little information. The OSCCON register sets the internal clock frequency. Just worry about bits 6 through 4. The others shouldn't matter. Next you have to config the pin connected to the LED as an output. Say you want to use pin 8; you'd have to clear bit 2 of TRISC since pin 8 is bit 2 of port C. The bits in a TRIS register must be cleared to make it an output, and set to make it an input (think 1 for input, 0 for output). Sometimes there's a register that configs a pin for use with the A/D, or as a digital pin. I don't see it on this chip. As for the configuration bits (what is set in MPLAB, page 111 of datasheet), make sure the watchdog is disabled for now, WDTE, and set FOSC to binary 100. That sets it to use the internal oscillator. Make sure the MCLR pin is pulled to +5 so it doesn't get stuck in reset. As for the format of how to write to these registers, look at some examples provided with HITECH. I don't recall how that one works. You could take a look at my website. I have some example code on there for other PICS. Actually, now that I think about it, I believe the single digit clock I have there uses the 688. http://users9.nofeehost.com/jmiller/
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