IMXRT1062 PWM not outputting

[imxrt1062_PWM]

Hi,

I am using i.MxRT1062 processor. I am having issue outputting the PWM signal. Is the XBARA mandatory to output the PWM signal?

I have to set the pinmux for the IOMUXC_GPIO_EMC_23_FLEXPWM1_PWMA00 pin i.e., GPIO_EMC23 pin which is on PWM1 Submodule 0 Channel A. Could someone please confirm if the XBAR needs to be configured for this pin.

I think the PWM port is correctly set up as the reload interrupt is happening correctly, but the output is not throwing any signal.

Thank you.

[mjbcswitzerland]

Hi

You need to set the pin's mux setting and also ensure that the IOMUXC_FLEXPWM1_PWMA0_SELECT_INPUT register is set to match.

This is how it is done in the uTaker project:

                _CONFIG_PERIPHERAL(GPIO_EMC_23, FLEXPWM1_PWMA00, (ulCharacteristics)); // select FLEXPWM1_PWMA00 on GPIO4-23 - alt function 1
                IOMUXC_FLEXPWM1_PWMA0_SELECT_INPUT = IOMUXC_FLEXPWM1_PWMA0_SELECT_INPUT_GPIO_EMC_23_ALT1;

Regards

Mark

For available stock of 1062 see here: https://www.utasker.com/Shop/semi.html

[_Leo_]

Hi,

Thank you so much for your interest in our products and for using our community.

If you refer to Table 10-1. Muxing Options from the reference manual the FLEXPWM1_PWM0_A signal can be routed directly to the following pads:

In fact if you consult the SDK example evkbmimxrt1060_pwm you will notice how the GPIO_SD_B0_00 pad is used. This can serve as a reference.

It is not necessary to use XBAR for the aforementioned pads.

Hope it helps you.

Have a nice day!