How to change the GPIO output frequency of nRF52832 over 1MHz ?

[Wesley_Lai]

Dear Sir,

I had a project is lighting the LED matrix, we choose the LED IC is TLC5958 and MCU is using nRF52832.

Now, we have a question is how to change the GPIO output frequency ?

After calculation, the LED IC clock needs 1.524MHz, but we try to pass the C language or modify the assembly language, GPIO can only output 1MHz.

Have any friends can help us ?

Thank you.

Wesley

2018.07.23

[Turbo J]

You can generate 1.6 MHz using a PWM peripherial. You might need to put the GPIO pin in high drive mode in order to achieve a good signal.