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rafael 2024-11-09 17:37:24 +01:00 committed by Dario Nieuwenhuis
parent 7538233616
commit ccf2e0c528
2 changed files with 5 additions and 5 deletions
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8
examples/rp/src/bin/pwm.rs
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@ -9,7 +9,7 @@
use defmt::*;
use embassy_executor::Spawner;
use embassy_rp::peripherals::{PIN_25, PIN_4, PWM_SLICE2, PWM_SLICE4};
use embassy_rp::peripherals::{PIN_4, PIN_25, PWM_SLICE2, PWM_SLICE4};
use embassy_rp::pwm::{Config, Pwm, SetDutyCycle};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
@ -48,15 +48,15 @@ async fn pwm_set_dutycycle(slice2: PWM_SLICE2, pin4: PIN_4) {
// If we aim for a specific frequency, here is how we can calculate the top value.
// The top value sets the period of the PWM cycle, so a counter goes from 0 to top and then wraps around to 0.
// Every such wraparound is one PWM cycle. So here is how we get 25KHz:
let desired_freq_hz = 25_000;
let desired_freq_hz = 25_000;
let clock_freq_hz = embassy_rp::clocks::clk_sys_freq();
let divider = 16u8;
let period = (clock_freq_hz / (desired_freq_hz * divider as u32)) as u16 - 1;
let mut c = Config::default();
c.top = period;
c.divider = divider.into();
let mut pwm = Pwm::new_output_a(slice2, pin4, c.clone());
loop {

2
examples/rp23/src/bin/pwm.rs
View File

@ -10,7 +10,7 @@
use defmt::*;
use embassy_executor::Spawner;
use embassy_rp::block::ImageDef;
use embassy_rp::peripherals::{PIN_25, PIN_4, PWM_SLICE2, PWM_SLICE4};
use embassy_rp::peripherals::{PIN_4, PIN_25, PWM_SLICE2, PWM_SLICE4};
use embassy_rp::pwm::{Config, Pwm, SetDutyCycle};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};