PWM NOT WORKING

[Alkaline]

Hi everyone

I'm trying to use the pwm without success.

The output pin always remains low as if it was not enabled.

I'm using the example available here https://www.matrixtsl.com/wiki/index.ph ... 9ba088505c

I'm using a pic32mx470f512h

Greetings

Update

The pwm only works on chanel 1. If I try to change the channel always keeping the timer 2 the pwm stops working.

[QMESAR]

Hi.
First off all you have to make sure your configuration settings are correct
(1) mcu is running
(2) running at the correct speed

Secondly as the PIC32 PWM makes amatch between the Duty set value and the value the Timer PR register is loaded with I would use the
setDuty10 parameter ,I have done this in your Flowchart and you will see the PWM in the simulation is active
Hope this helps

P1.jpg (21.41 KiB) Viewed 6247 times

check your configbits they look abit strange to me

P2.jpg (183.74 KiB) Viewed 6247 times

PWM_fader.fcfx

(8.87 KiB) Downloaded 245 times

[QMESAR]

Hi
I just compiled the Fowchart and programmed a uC32 board with your Flowchart
and the PWM is working just fine using the setDuty10 function
Counting up and down

screenShot_20190128_21_40_05.jpg (51.07 KiB) Viewed 6233 times

screenShot_20190128_21_40_46.jpg (53.09 KiB) Viewed 6233 times

[Alkaline]

Hi Qmesar

Thanks for the reply.

Yes, checking the configuration of this project is totally wrong.

the settings that I usually use are as follows.

The program now works correctly but only on channel 1.

If I try to change channels, the pwm will not work

[QMESAR]

Hi.
Ok I will try on my uC32 board and see what I get sometime today .

[QMESAR]

Hi
With me Channel 1 and 2 are working
Did you use a second PWM enable icon and enable PWM2 ?

PWM_uc2.fcfx

(10.82 KiB) Downloaded 278 times

screenShot_20190129_13_06_02.jpg (87.45 KiB) Viewed 6188 times

[Alkaline]

Hello Qmesar

I'm sorry for the delay, but I had to finish a project.

Today I tried again to run the software but I still have problems with the channel other than 1.

The pwm works correctly on channel 1.

In the next days I continue to investigate because it is very strange.

[QMESAR]

Hi ,

OK no problem at all please report your findings as I am not using the exact same chip as you .
I would have liked to test on the same chip but I do not have one .

Good luck

[Benj]

Hello Alkaline,

Did you manage to get anywhere with this?

[Alkaline]

Hi Benj

sorry for the wait but I had to spend some time on other projects.

Anyway the pwm works correctly!At the beginning I had a little bit of difficulty in understanding how the flowocode set the various parameters but then I solved it!

On another subject, the program i'm completing is very large, how can I know exactly how much space it holds in memory? Do I need to enter any commands in the compiler?


now to calculate the program memory I convert the reported value
"program memory: start address = 0x1d000000, end address = 0x1d0407ff"

d0407ff = 264,191 bytes, is it right?

Thanks in advance

[Benj]

Hello,

"program memory: start address = 0x1d000000, end address = 0x1d0407ff"
407ff = 264,191 bytes, is it right?

Looks right to me.