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#![no_std]
#![no_main]
use defmt::info;
use embassy_executor::Spawner;
use embassy_stm32::Config as PeripheralConfig;
use embassy_stm32::gpio::OutputType;
use embassy_stm32::time::khz;
use embassy_stm32::timer::Channel;
use embassy_stm32::timer::complementary_pwm::{ComplementaryPwm, ComplementaryPwmPin};
use embassy_stm32::timer::simple_pwm::PwmPin;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = PeripheralConfig::default();
{
use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi {
sys_div: HsiSysDiv::DIV1,
});
config.rcc.pll = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL16,
divp: None,
divq: Some(PllQDiv::DIV2), // 16 / 1 * 16 / 2 = 128 Mhz
divr: Some(PllRDiv::DIV4), // 16 / 1 * 16 / 4 = 64 Mhz
});
config.rcc.sys = Sysclk::PLL1_R;
// configure TIM1 mux to select PLLQ as clock source
// https://www.st.com/resource/en/reference_manual/rm0444-stm32g0x1-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
// RM0444 page 210
// RCC - Peripherals Independent Clock Control Register - bit 22 -> 1
config.rcc.mux.tim1sel = embassy_stm32::rcc::mux::Tim1sel::PLL1_Q;
}
let p = embassy_stm32::init(config);
let ch1 = PwmPin::new(p.PA8, OutputType::PushPull);
let ch1n = ComplementaryPwmPin::new(p.PA7, OutputType::PushPull);
let mut pwm = ComplementaryPwm::new(
p.TIM1,
Some(ch1),
Some(ch1n),
None,
None,
None,
None,
None,
None,
khz(512),
Default::default(),
);
let max = pwm.get_max_duty();
info!("Max duty: {}", max);
pwm.set_duty(Channel::Ch1, max / 2);
pwm.enable(Channel::Ch1);
loop {}
}
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