Allow PWM testing on the DWM1001C.

Author: Jonathan Pallant (42 Technology)

examples/pwm-blinky-demo/Cargo.toml

@@ -21,6 +21,11 @@ features = ["rt"]
 path = "../../nrf9160-hal"
 optional = true
 
+[dependencies.nrf52832-hal]
+features = ["rt"]
+path = "../../nrf52832-hal"
+optional = true
+
 [dependencies.nrf52840-hal]
 features = ["rt"]
 path = "../../nrf52840-hal"
@@ -29,3 +34,4 @@ optional = true
 [features]
 9160 = ["nrf9160-hal"]
 52840 = ["nrf52840-hal"]
+52832 = ["nrf52832-hal"]

examples/pwm-blinky-demo/src/main.rs

@@ -5,6 +5,8 @@ use hal::{gpio, prelude::*, pwm, pwm::Pwm, timer, timer::Timer};
 use nb::block;
 #[cfg(feature = "52840")]
 use nrf52840_hal as hal;
+#[cfg(feature = "52832")]
+use nrf52832_hal as hal;
 #[cfg(feature = "9160")]
 use nrf9160_hal as hal;
 use rtt_target::{rprintln, rtt_init_print};
@@ -27,11 +29,13 @@ fn main() -> ! {
     pwm.set_period(500u32.hz());
 
     rprintln!("PWM Blinky demo starting");
+    
+    let wait_time = 1_000_000u32 / pwm.get_max_duty() as u32;
     loop {
-        pwm.set_duty_on_common(pwm.get_max_duty());
-        delay(&mut timer, 250_000); // 250ms
-        pwm.set_duty_on_common(0);
-        delay(&mut timer, 1_000_000); // 1s
+        for duty in 0..pwm.get_max_duty() {
+            pwm.set_duty_on_common(duty);
+            delay(&mut timer, wait_time);
+        }
     }
 }
 
@@ -65,6 +69,22 @@ fn init_device(p: hal::pac::Peripherals) -> (Pwm<hal::pac::PWM0>, Timer<hal::pac
     (pwm, timer)
 }
 
+#[cfg(feature = "52832")]
+fn init_device(p: hal::pac::Peripherals) -> (Pwm<hal::pac::PWM0>, Timer<hal::pac::TIMER0>) {
+    let p0 = gpio::p0::Parts::new(p.P0);
+
+    let pwm = Pwm::new(p.PWM0);
+    pwm.set_output_pin(
+        pwm::Channel::C0,
+        &p0.p0_30.into_push_pull_output(gpio::Level::High).degrade(),
+    );
+
+    let timer = Timer::new(p.TIMER0);
+
+    (pwm, timer)
+}
+
+
 fn delay<T>(timer: &mut Timer<T>, cycles: u32)
 where
     T: timer::Instance,