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Hi all,

I am trying to alter the last 60% of the linear map, so that when the ADC input voltage is zero, the PWM output is zero, but when the ADC is at 20%, then the PWM output is 100% (and stays at 100% all the way to 5V input). I am still very new to programming, and the last time I did anything was on an Amstrad CPC 464 back in 1984..... (so it has been 'a while').

Thanks in advance,

Dave

Hi Dave

Try using the attached include file.



In this file the period value is 0 which corresponds to 15.6Khz. Change this from 0 to 1 or 2 if you need a different period for the PWM.
; 0 -> 15.6Khz -> 64uS
; 1 -> 3.8Khz -> 263uS
; 2 -> 980Hz -> 1mS

You will need to add the file name to the bdcm_rempa.asm file by commenting out the existing entry.

; 3rd include -> remapSelect 1 -> LED 1.5Hz
;#include remapData3.inc -< comment this line by adding a semi-colon
;#include remapData4.inc
#include Custom_Dave.inc

Then reassemble to generate the HEX file for the PIC programmer.