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HC_R
New Contributor I
1,342 Views

Intel Edison - 300mA current when PWM is enabled -

I enabled PWM channel 3 of Intel Edison for a frequency of 10Khz and duty cycle of 50%. The Edison was powered from a DC source of 3.7V.

After enabling the PWM current consumption went to 300mA from 60mA. Why the PWM module is taking too much current ? is this expected behavior ?

echo mode1 > /sys/kernel/debug/gpio_debug/gpio183/current_pinmux

echo 3 > /sys/class/pwm/pwmchip0/export

echo 50000 > /sys/class/pwm/pwmchip0/pwm3/duty_cycle

echo 100000 > /sys/class/pwm/pwmchip0/pwm3/period

echo 1 > /sys/class/pwm/pwmchip0/pwm3/enable

Regards

Hp,

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3 Replies
idata
Community Manager
94 Views

Hi Hari_CR,

 

 

I'd say that it's normal to have that increase in the current consumption, however let me investigate more about it to confirm whether it's normal or not.

 

 

I'll post an update as soon as possible.

 

 

Regards,

 

Diego
HC_R
New Contributor I
94 Views

Sorry for the inconvenience,

I had a schottkey diode placed turned around which was taking this much current, deploying it properly solved the issue.

idata
Community Manager
94 Views

Hi Hari_CR,

 

 

Don't worry, it's great that you found the root of the issue.

 

 

Regards,

 

Diego
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