Things of Interest to PIC Users

I like the PIC processors from Microchip. Yes, I've used the ATMEL AVR chips. Yes, I've used the 8051 chips from Dallas, Yes, I've used the MC68HC11 from Motorola. But I just keep coming back to these PICs. They are darn simple to hook up, easily programmed, and pretty simple to understand. And the development tools are free. That's a big win and I appreciate it. I created this page to try to create a 'linking' page for things that would be of interest to PIC users on my site (and elsewhere).

Projects:

• Servo Gizmo - This is a pretty general purpose PIC based board. From it I've built these:
  • Ant Weight ESC - A small speed controller for 1 amp DC motors.
  • LCD Diagnostic Console - Your basis serial port hooked up to an LCD hack.
  • Relay/Solenoid Actuator - Good for running weapons on your BattleBot.
• My First ESC - Not a very good example these days. The PIC code is great (and can run on a PIC16F628!) but the FET version which everyone seems to like has some serious limitations.
• USB PIC Programmer - Assembling the KitsRus kit for a handy PIC programmer.

Software:

• 16Bits.inc -- These are some macros that let you deal with 16 bit quantities, included are:

   

  MOV16	Reg1, Reg2	Move a 16 bit value from Reg1 to Reg2
  CMP16	Reg1, Reg2	Compare Reg1 to Reg2 and set C and Z appropriately
  CMPI16	Reg1, Imm	Compare Reg1 to immediate value Imm and set C and Z appropriately.
  MOVI16	Imm, Reg1	Move immediate value Imm into Reg1
  CLR16	Reg1	Clear Reg1 to 0
  INC16	Reg1	Increment 16 bit value at Reg1 by 1
  DEC16	Reg1	Decrement 16 bit value at Reg1 by 1
  LSR16	Reg1	Logical Right shift (zero fill) Reg 1
  LSL16	Reg1	Logica Left shift (zero fill) of Reg 1
  SUB16	Reg1, Reg2	Subtract Reg2 from Reg1 and leave in Reg1, implements the expression:             Reg1 = Reg1 - Reg2
  SUBI16	Reg1, Imm	Subtract the immediate value Imm from Reg1 and leave in Reg1. This implements the expression:             Reg1 = Reg1 - Imm
  ADD16	Reg1,Reg2	Add the value in Reg1 to the value in Reg2 and leave the result in Reg1. This implements the expression:             Reg1 = Reg1 + Reg2
  ADDI16	Reg1,Imm	Add the immediate value Imm to Reg1 and store the result in Reg1. This implements the expression:              Reg1 = Reg1 + Imm

   

• DIV16.ASM -- This file implements a 16 bit x 16 bit unsigned divide function for the PIC.
• LCD.ASM -- This is a collection of routines that make it easy to hook a PIC up to an HD77480 controlled LCD with only 6 pins of I/O.