PWM Channel 3 does not work

[RABO2320]

Hi
Pwm Channel3 (AVR MEGA8) works in software but does not work on the chip.
Please advise.

PWM.fcfx

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channel3.png

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osc.png

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[RABO2320]

One of my friends answer me

[Benj]

Hello,

Sorry for the delay. I'm investigating for you now. I've now had a good check through the code and the device datasheet and it all looks ok.

As a test if you enable timer 2 interrupt does this allow the PWM to function?

[RABO2320]

Hello Benj
How to do it؟
Because I don't know anything about C Code.
Please guide me.

[Benj]

Hello,

Just add an interrupt icon, set the type to enable timer 2 and configure the prescaler and other properties as desired. Hopefully this should kick start the PWM but let me know how you get on.

[RABO2320]

Hello Benj
The method you provided didn't work.
The software makes an error when compiling.

In file included from C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\includes.c:647,
from C:\Users\RAB\Desktop\check\Z\Flowcode1.c:351:
C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\/AVR\AVR_CAL_PWM.c:179:6: warning: #warning "PWM Channel Uses Resource Timer 1"
In file included from C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\includes.c:669,
from C:\Users\RAB\Desktop\check\Z\Flowcode1.c:351:
C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\/AVR\AVR_CAL_PWM.c:179:6: warning: #warning "PWM Channel Uses Resource Timer 1"
In file included from C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\includes.c:692,
from C:\Users\RAB\Desktop\check\Z\Flowcode1.c:351:
C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\/AVR\AVR_CAL_PWM.c:238:7: warning: #warning "PWM Channel Uses Resource Timer 2"
C:\ProgramData\MatrixTSL\FlowcodeV8\CAL\/AVR\AVR_CAL_PWM.c:495:3: warning: #warning "Period control register not available on target device, period will default to 255 + 1"
C:\Users\RAB\Desktop\check\Z\Flowcode1.c: In function 'main':
C:\Users\RAB\Desktop\check\Z\Flowcode1.c:939: error: 'TCCR2B' undeclared (first use in this function)
C:\Users\RAB\Desktop\check\Z\Flowcode1.c:939: error: (Each undeclared identifier is reported only once
C:\Users\RAB\Desktop\check\Z\Flowcode1.c:939: error: for each function it appears in.)

Error returned from [avr-gcc.exe]

C:\Program Files (x86)\Flowcode\Common\Compilers\avr\batchfiles\avra.bat reported error code 1

PWM 3CH.fcfx

(12 KiB) Downloaded 179 times

[RABO2320]

Hello
Please advise.

[Benj]

Hello,

Sorry for the delay, I've now pushed updates to the update system to allow the timer2 interrupt to compile correctly. This gives me a clue as to the PWM issue too so I'll see if I can get this resolved too so you dont have to add the interrupt icon.