I figured it out after stumbling across the GPIO_MODE_INPUT_OUTPUT definition in some code. It's not as easy as calling gpio_set_direction(GPIO_NUM_12, GPIO_MODE_INPUT_OUTPUT) as gpio_set_direction doesn't handle GPIO_MODE_INPUT_OUTPUT properly. It does seem to work when calling gpio_config() with t...

WiFive wrote:Shouldn't it be

Code: Select all

PIN_INPUT_ENABLE(GPIO_PIN_MUX_REG[12]);
gpio_matrix_in(12, PWM0_SYNC0_IN_IDX, false);   

Thanks, but GPIO_SYNC0_IN is #defined to 12 in my code for the SYNC_PIN_SOURCE_INTERNAL test, so my code is effectively the same as what you suggested.

I have a GPIO output driving an external chip that I would like to connect to a MCPWM timer sync input, without using an extra pin. I haven't been able to get this to work, but ESP_Sprite's comment from this thread gives me hope: Are all pin uses mutually exclusive or may some be overlapped during u...