2 leds blinking, wired up temp sensor, no clue how to read it yet.

src/main.rs

@@ -0,0 +1,77 @@
+//! Blinks the LED on a Pico board
+//!
+//! This will blink an LED attached to GP25, which is the pin the Pico uses for the on-board LED.
+#![no_std]
+#![no_main]
+
+use bsp::{
+    entry,
+    hal::gpio,
+};
+use defmt::*;
+use defmt_rtt as _;
+use embedded_hal::digital::v2::OutputPin;
+use panic_probe as _;
+
+// Provide an alias for our BSP so we can switch targets quickly.
+// Uncomment the BSP you included in Cargo.toml, the rest of the code does not need to change.
+use rp_pico as bsp;
+
+use bsp::hal::{
+    clocks::{init_clocks_and_plls, Clock},
+    pac,
+    sio::Sio,
+    watchdog::Watchdog,
+};
+
+#[entry]
+fn main() -> ! {
+    info!("Program start");
+    let mut pac = pac::Peripherals::take().unwrap();
+    let core = pac::CorePeripherals::take().unwrap();
+    let mut watchdog = Watchdog::new(pac.WATCHDOG);
+    let sio = Sio::new(pac.SIO);
+
+    // External high-speed crystal on the pico board is 12Mhz
+    let external_xtal_freq_hz = 12_000_000u32;
+    let clocks = init_clocks_and_plls(
+        external_xtal_freq_hz,
+        pac.XOSC,
+        pac.CLOCKS,
+        pac.PLL_SYS,
+        pac.PLL_USB,
+        &mut pac.RESETS,
+        &mut watchdog,
+    )
+    .ok()
+    .unwrap();
+
+    let mut delay = cortex_m::delay::Delay::new(core.SYST, clocks.system_clock.freq().to_Hz());
+
+    let pins = bsp::Pins::new(
+        pac.IO_BANK0,
+        pac.PADS_BANK0,
+        sio.gpio_bank0,
+        &mut pac.RESETS,
+    );
+
+    let mut led_pin = pins.led.into_push_pull_output();
+    let mut external_led_pin = pins.gpio14.into_push_pull_output();
+    //clk
+    let _thermometer_spi_sck = pins.gpio2.into_function::<gpio::FunctionSpi>();
+    //do, or MISO.
+    let _thermometer_spi_rx = pins.gpio4.into_function::<gpio::FunctionSpi>();
+    //cs
+    let _thermometer_spi_csn = pins
+        .gpio5
+        .into_push_pull_output_in_state(gpio::PinState::Low);
+
+    loop {
+        led_pin.set_high().unwrap();
+        external_led_pin.set_low().unwrap();
+        delay.delay_ms(1000);
+        led_pin.set_low().unwrap();
+        external_led_pin.set_high().unwrap();
+        delay.delay_ms(1000);
+    }
+}