Playing PWM on Arduino MEGA2560 in mikroPascal.

[mikroSeven]

Hi, started learning to use the PWM's on the Arduino MEGA2560.

using PWM Library(routines): ( PWM1 Library = PWM2 Library )

12 PWM-outputs at: E.4, E.5, G5, E.3, H.3, H.4, H.5, H.6, B.4, B.5, B.6, B.7
All above DDR-bits as output. DDRE.4:= 1 etc...
If not: no output PWM1 and PWM2.


PWM1 visible at G.5 and B.7 fast flashing LED
PWM2 visible at H.6 and B.4 fast flashing LED

Played around with increasing/decreasing DutyCycle: visible by the brightnes of the led's.


USING OSCILLOSCOPE:

pwm scope.jpg (100.68 KiB) Viewed 15304 times

As written in the Library: not all prescale is avaiable.

[filip]

Hi,

I presume this is a small tutorial for our users ?

Regards,
Filip.

[mikroSeven]

Hi, in the first place I placed it because of my enthusiastic...

And if it helps other people, would be fine.

[mikroSeven]

Sorry when I'm wrong but I couldn't find the following combination in the libstock:
( there are lot's of others! )

mikroPascal - AVR - pwm

Thanks in advance.

[mikroSeven]

Learing my way trough Timer/Counter/PWM in all of the mikroPascal-IDE/compiler/Library and the 2560-datasheet.

Started with the standard procedures of the Library but also using direct methodes. ( directly reading/writing registers/bits ).

e.g.: I'm setting the sprecale bits: prescaling is done by 3 bits but they are spread over 2-registers.
( standard procedure PWMx_Init does it for you )

Have a nice weekend!

[mikroSeven]

Nice!

Controlling the 2560's TimerCounter/PWM by pc RS232, Lazarus!

Video on:
https://www.youtube.com/watch?v=Ho0_UuN-0nk

PWM duty cycle limited between 10% and 90%.

pwm by RS232.jpg (93.16 KiB) Viewed 11237 times

[mikroSeven]

Gonna use CounterTimer/pwm for controlling steppermotors.

Got the steppermotors allready running.
For exact running I'm gonna use TC/pwm.

Here a first shot:

https://www.youtube.com/watch?v=uT4BkUJiymc

Values are off by tenths of procent.
Need to sophisticate the code to get it more accurate.

To be continued...

[mikroSeven]

Things are improving:

https://www.youtube.com/watch?v=uT4BkUJiymc


Best regards!