Hello,

I have used the following overlay:

/ {
    soc {
        timers1: timers@40010000 {
            status = "okay";

            pwm {
                status = "okay";
            };
        };

        timers2: timers@40000000 {
            status = "okay";

            pwm {
                status = "okay";
            };
        };

        timers3: timers@40000400 {
            status = "okay";

            pwm {
                status = "okay";
            };
        };

        timers4: timers@40000800 {
            status = "okay";

            pwm {
                status = "okay";
            };
        };
    };
};

The prj.conf file contains the following regarding PWM:

CONFIG_PWM=y
CONFIG_PWM_STM32=y

I used the following code to test:

    auto dev_pwm = device_get_binding("PWM_1");

    if (dev_pwm != nullptr)
    {
        LOG_INF("Have PWM device.");

        int ret = pwm_pin_set_usec(dev_pwm, 1, 100, 50, 0);

        if (ret != 0)
        {
            LOG_ERR("Could not set PWM.");
        }
        else
        {
            LOG_INF("PWM set.");
        }
    }

The output:

[00:00:00.006,000] <inf> main: Have PWM device.
[00:00:00.006,000] <inf> main: PWM set.

I am measuring pin D7 on the board (PA8 for the chip), and no pulse.

Florian

Op 12/11/2020 om 08:36 schreef Adam Podogrocki: