This part is a demo of what the Test menu does. Your PIC calibration data has now been restored.MPLab will warn that it is about to program new calibration data to the PIC.Next, program the file "OscCal.hex" file again to the PIC.Enter the new calibration value as displayed on the screen.Select "Allow PICkit to program calibration memory".Open the Setting window, and select Calibration Memory.This is the value of the calibration bit that needs to be set in MPLab. Memory location 0x7F will contain the calculated new OSCAL value.There is no need to program the new calibration bit. Memory location 0圆F will contain the OSCAL value stored on the PIC if it was not erased.The last two lines will contain the the OSCAL details.When the screen displays the newly found OscCal value, do the following: To exit the calibration mode, press Up or Down button when asked to insert 12F675. If the correct file (OscCal.hex) is not loaded, PIC not Found message will be displayed.Power to the PIC is turned off at this stage.Program this new OSCCAL value into the calibration bit of the PIC.When done, the correct value of OSCAL will be displayed.During this step, the PIC will be controlled by the ATMEGA to determine the OSCAL value closest to 1000Hz. A 1000Hz test signal will be generated by the PIC.Power to the PIC is still on at this stage.During this step, power to the PIC is turned on.Program the PIC with "OscCal.hex" This file needs to be loaded onto the PIC to determine the value of OSCAL.The menu selection will be displayed briefly on the screen.
#PROGRAMA PICKIT 3 SOFTWARE#
Testing of a PIC final software and parameters.Calculating and programming of the calibration bit of the PIC.The final board now performs the following functions:: Soon, I realised that the same circuit can also be used to upload hex files to a PIC.įinally, with a screen and 2 buttons, I added a test routine to the same circuit, so that I can adjust the parameters, and perform an operational test of the final software on the PIC. This board started as a tool to speed up the calibration bit programming on the PIC 12F675 without the need for additional components or wires. To reprogram the calibration bit, another circuit is needed to determine the correct calibration bit. Sometimes, the PICkit 3 erases the calibration bit on the PIC.To test the circuit, external equipment is needed (Servo tester, 5V BEC, 3 cell LiPo battery, and the load driven by the circuit.To test the programmed PIC, and set certain parameters, the circuit still needs to be on a breadboard.To program a PIC, I have to set up a circuit on breadboard. I only have a PICkit 3 programmer, which does not have a convenient ZIF socket to program a stand-alone PIC.PICs thus need to be programmed out of circuit.
#PROGRAMA PICKIT 3 PC#
This is to allow for a small PC board layout.
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