add pwm test app

examples/simple/examples/pwm_test.rs

@@ -0,0 +1,44 @@
+//! Simple PWM example
+//!
+//! Outputs a PWM waveform on pin PG2.
+#![no_main]
+#![no_std]
+
+use cortex_m_rt::entry;
+use embedded_hal::pwm::SetDutyCycle;
+// Import panic provider.
+use panic_probe as _;
+// Import logger.
+use defmt_rtt as _;
+use simple_examples::peb1;
+use va416xx_hal::{
+    clock::ClockConfigurator,
+    pac,
+    pins::PinsG,
+    prelude::*,
+    pwm::{get_duty_from_percent, PwmPin},
+};
+
+#[entry]
+fn main() -> ! {
+    defmt::println!("-- VA108xx PWM example application--");
+    let dp = pac::Peripherals::take().unwrap();
+
+    // Use the external clock connected to XTAL_N.
+    let clocks = ClockConfigurator::new(dp.clkgen)
+        .xtal_n_clk_with_src_freq(peb1::EXTCLK_FREQ)
+        .freeze()
+        .unwrap();
+
+    let pinsg = PinsG::new(dp.portg);
+    let mut pwm = PwmPin::new(pinsg.pg2, dp.tim9, &clocks, 10.kHz()).unwrap();
+    //let mut delay_timer = CountdownTimer::new(dp.tim0, &clocks);
+    //let mut current_duty_cycle = 0.0;
+    pwm.set_duty_cycle(get_duty_from_percent(0.5)).unwrap();
+    pwm.enable();
+
+    // Delete type information, increased code readibility for the rest of the code
+    loop {
+        cortex_m::asm::nop();
+    }
+}