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imx6ull PWM interrupt

Question asked by Alven WU on Apr 9, 2019
Latest reply on Apr 9, 2019 by igorpadykov

Hi I tried to use PWM interrupt handler to chang the duty cycle values after  PWM initialization configuration on imx 6ull . everytime, it could enter into the FIFo empty  interrupt and change the duty value in it.

but seems the output is not like the duty cycle Valule as setting. and in Linux ,the PWM driver is using sdma to change the duty ,could we use the PWM FIFO interrupt or roller interrupt to generate wave signals??