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1. #HOW TO PROGRAM PIC16F628A USING PICKIT2 FOR FREE#
2. #HOW TO PROGRAM PIC16F628A USING PICKIT2 HOW TO#
3. #HOW TO PROGRAM PIC16F628A USING PICKIT2 SOFTWARE#
4. #HOW TO PROGRAM PIC16F628A USING PICKIT2 CODE#

The following timing diagram illustrates this: The resulting frequency on RB3 is 1 / 0.0128 s = 78.125 Hz. This changes the RB3 pin, so the cycle time is 12.8 ms. The first compare matches after 1 / 4,000,000 Hz * 25,600 seconds = 6.4 ms.

#HOW TO PROGRAM PIC16F628A USING PICKIT2 SOFTWARE#

The software waits for this event and then adds the next cycle time, and changes the set/clear bit for the next half cycle. The capture/compare module is configured as compare mode, with setting or clearing the RB3 pin on compare match, which sets CCP1IF, too. It counts from 0 to 65535 (0xffff) and then starts again at 0. First, timer 1 is enabled, which is a free running 16 bit counter. The program is more difficult to understand, because it uses the timer 1 and the capture compare modul to generate a high precision output frequency on RB3. Connect a piezo speaker, maybe from an old gift card, to RB3 and GND, and then use this program: greensleeves.c The PIC16F628A has a PWM and capture/compare output on pin RB3, which can be used to create a square wave sound. Now the MCLR pin is configured as reset, so you can use the MCLR button to reset the PIC: counter.c Sound synthesis Debouncing is done by delaying after detecting an edge. The next example counts the number of button push events up to 15 and displays it with the RB0 to RB3 LEDs. The main program configures the direction of PORTA and PORTB and then there is an infinite loop for blinking the LEDs. See the datasheet of the PIC for a detailed description of all configurations.Īfter the config bit definition, you can define the frequency with which you use the microcontroller. You can find the definitions in C:\Program Files (x86)\HI-TECH Software\PICC\9.81\include\pic16f628a.h.

#HOW TO PROGRAM PIC16F628A USING PICKIT2 CODE#

You can specify it in Configure->Configuration Bits, too, but it is better to specify it in the source code, because then the source code can be reused without knowing the project file. first 4 LEDs on PORTA off, second 4 LEDs on PORTB on turn on first 4 LEDs on PORTA, second 4 LEDs on PORTB off configure first four bits of RA and RB to output define the oscillator frequency for the _delay_ms function MCLRE_OFF & // RA5/MCLR/VPP pin function is digital input, MCLR internally tied to VDDįOSC_HS // // XT oscillator: Crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN

LVP_OFF & // Low-Voltage Programming Enable bit

You can program the PIC with the program button in the toolbar, too:ĭon't forget to release the reset, if the MCLR pin is configured as reset. PICkit 2, it should display something like this:įound PICkit 2 - Operating System Version 2.32.0

#HOW TO PROGRAM PIC16F628A USING PICKIT2 FOR FREE#

Then download MPLAB for free from (or newer versions). If you want to test the programs yourself, you'll need the parts from the Skinny Latte board (see schematic below you can use a breadboard, too) and a PIC programmer, like the PICkit 2.

#HOW TO PROGRAM PIC16F628A USING PICKIT2 HOW TO#

A short introduction how to install MPLAB (but there are better videos on YouTube on this topic) and the example programs running on the board: Installing MPLAB and HI-Tech C compiler This page demonstrates some C programs for it written by me. Tom Biery sent me one of his nice Skinny Latte boards (thanks Tom!), see his YouTube video. Skinny Latte PIC Board: blinking LEDs and playing Greensleeves Skinny Latte PIC Board: blinking LEDs and playing Greensleeves