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

1 files changed, 46 insertions, 0 deletions

diff --git a/examples/rp235x/src/bin/spi.rs b/examples/rp235x/src/bin/spi.rs
new file mode 100644
index 000000000..4cc4f5210
--- /dev/null
+++ b/examples/rp235x/src/bin/spi.rs
@@ -0,0 +1,46 @@
+//! This example shows how to use SPI (Serial Peripheral Interface) in the RP2040 chip.
+//!
+//! Example for resistive touch sensor in Waveshare Pico-ResTouch
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::spi::Spi;
+use embassy_rp::{gpio, spi};
+use gpio::{Level, Output};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    info!("Hello World!");
+
+    // Example for resistive touch sensor in Waveshare Pico-ResTouch
+
+    let miso = p.PIN_12;
+    let mosi = p.PIN_11;
+    let clk = p.PIN_10;
+    let touch_cs = p.PIN_16;
+
+    // create SPI
+    let mut config = spi::Config::default();
+    config.frequency = 2_000_000;
+    let mut spi = Spi::new_blocking(p.SPI1, clk, mosi, miso, config);
+
+    // Configure CS
+    let mut cs = Output::new(touch_cs, Level::Low);
+
+    loop {
+        cs.set_low();
+        let mut buf = [0x90, 0x00, 0x00, 0xd0, 0x00, 0x00];
+        spi.blocking_transfer_in_place(&mut buf).unwrap();
+        cs.set_high();
+
+        let x = (buf[1] as u32) << 5 | (buf[2] as u32) >> 3;
+        let y = (buf[4] as u32) << 5 | (buf[5] as u32) >> 3;
+
+        info!("touch: {=u32} {=u32}", x, y);
+    }
+}