PWM on port 1

RE: PWM on port 1

vist — Fri, 08 Mar 2019 08:02:40 GMT

Great, thank you. I think adding that to the example would make it more clear.

RE: PWM on port 1

Vidar Berg — Fri, 08 Mar 2019 07:44:57 GMT

You can replace BSP_LED_0 with the NRF_GPIO_PIN_MAP(port, pin) macro to specify the port number.

RE: PWM on port 1

vist — Fri, 08 Mar 2019 07:36:31 GMT

I can use the PWM driver if that is the recommended library. But as far as I can see it has the same issue. The port doesn't seem to be specified in the PWM driver example. Below from demo3 code.

 nrf_drv_pwm_config_t const config0 =
    {
        .output_pins =
        {
            BSP_LED_0 | NRF_DRV_PWM_PIN_INVERTED, // channel 0
            NRF_DRV_PWM_PIN_NOT_USED,             // channel 1
            NRF_DRV_PWM_PIN_NOT_USED,             // channel 2
            NRF_DRV_PWM_PIN_NOT_USED,             // channel 3
        },
        .irq_priority = APP_IRQ_PRIORITY_LOWEST,
        .base_clock   = NRF_PWM_CLK_125kHz,
        .count_mode   = NRF_PWM_MODE_UP,
        .top_value    = 25000,
        .load_mode    = NRF_PWM_LOAD_COMMON,
        .step_mode    = NRF_PWM_STEP_AUTO
    };

RE: PWM on port 1

Vidar Berg — Fri, 08 Mar 2019 07:29:34 GMT

Hi,

I would recommend using the PWM driver instead because it uses the PWM peripheral. Not TIMERS+PPI+GPIOTE like the PWM library does (initially made for the 51 that didn't have dedicated PWM HW). However, if you prefer using the library, let me know, and I will find out how you can use port 1.