rename `rp23` (?) folder to `rp235x`; fix `ci.sh` to use `rp235x` folder

1 files changed, 48 insertions, 0 deletions

diff --git a/examples/rp235x/src/bin/adc.rs b/examples/rp235x/src/bin/adc.rs
new file mode 100644
index 000000000..b7324f755
--- /dev/null
+++ b/examples/rp235x/src/bin/adc.rs
@@ -0,0 +1,48 @@
+//! This example test the ADC (Analog to Digital Conversion) of the RP2350A pins 26, 27 and 28.
+//! It also reads the temperature sensor in the chip.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::adc::{Adc, Channel, Config, InterruptHandler};
+use embassy_rp::bind_interrupts;
+use embassy_rp::gpio::Pull;
+use embassy_time::Timer;
+use {defmt_rtt as _, panic_probe as _};
+
+bind_interrupts!(struct Irqs {
+    ADC_IRQ_FIFO => InterruptHandler;
+});
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut adc = Adc::new(p.ADC, Irqs, Config::default());
+
+    let mut p26 = Channel::new_pin(p.PIN_26, Pull::None);
+    let mut p27 = Channel::new_pin(p.PIN_27, Pull::None);
+    let mut p28 = Channel::new_pin(p.PIN_28, Pull::None);
+    let mut ts = Channel::new_temp_sensor(p.ADC_TEMP_SENSOR);
+
+    loop {
+        let level = adc.read(&mut p26).await.unwrap();
+        info!("Pin 26 ADC: {}", level);
+        let level = adc.read(&mut p27).await.unwrap();
+        info!("Pin 27 ADC: {}", level);
+        let level = adc.read(&mut p28).await.unwrap();
+        info!("Pin 28 ADC: {}", level);
+        let temp = adc.read(&mut ts).await.unwrap();
+        info!("Temp: {} degrees", convert_to_celsius(temp));
+        Timer::after_secs(1).await;
+    }
+}
+
+fn convert_to_celsius(raw_temp: u16) -> f32 {
+    // According to chapter 4.9.5. Temperature Sensor in RP2040 datasheet
+    let temp = 27.0 - (raw_temp as f32 * 3.3 / 4096.0 - 0.706) / 0.001721;
+    let sign = if temp < 0.0 { -1.0 } else { 1.0 };
+    let rounded_temp_x10: i16 = ((temp * 10.0) + 0.5 * sign) as i16;
+    (rounded_temp_x10 as f32) / 10.0
+}