From b185e02a42ad751ec6c31ffa6a1b87503f15489d Mon Sep 17 00:00:00 2001
From: Caleb Jamison <caleb@cbjamo.com>
Date: Wed, 7 Aug 2024 23:20:26 -0400
Subject: Initial rp235x support

Examples have been run, but there is not yet a test suite.
---
 examples/rp23/src/bin/uart_buffered_split.rs | 74 ++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 examples/rp23/src/bin/uart_buffered_split.rs

(limited to 'examples/rp23/src/bin/uart_buffered_split.rs')

diff --git a/examples/rp23/src/bin/uart_buffered_split.rs b/examples/rp23/src/bin/uart_buffered_split.rs
new file mode 100644
index 000000000..f7acdade9
--- /dev/null
+++ b/examples/rp23/src/bin/uart_buffered_split.rs
@@ -0,0 +1,74 @@
+//! This example shows how to use UART (Universal asynchronous receiver-transmitter) in the RP2040 chip.
+//!
+//! No specific hardware is specified in this example. If you connect pin 0 and 1 you should get the same data back.
+//! The Raspberry Pi Debug Probe (https://www.raspberrypi.com/products/debug-probe/) could be used
+//! with its UART port.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::bind_interrupts;
+use embassy_rp::peripherals::UART0;
+use embassy_rp::uart::{BufferedInterruptHandler, BufferedUart, BufferedUartRx, Config};
+use embassy_time::Timer;
+use embedded_io_async::{Read, Write};
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+use embassy_rp::block::ImageDef;
+
+#[link_section = ".start_block"]
+#[used]
+pub static IMAGE_DEF: ImageDef = ImageDef::secure_exe();
+
+// Program metadata for `picotool info`
+#[link_section = ".bi_entries"]
+#[used]
+pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
+    embassy_rp::binary_info_rp_cargo_bin_name!(),
+    embassy_rp::binary_info_rp_cargo_version!(),
+    embassy_rp::binary_info_rp_program_description!(c"Blinky"),
+    embassy_rp::binary_info_rp_program_build_attribute!(),
+];
+
+
+bind_interrupts!(struct Irqs {
+    UART0_IRQ => BufferedInterruptHandler<UART0>;
+});
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let (tx_pin, rx_pin, uart) = (p.PIN_0, p.PIN_1, p.UART0);
+
+    static TX_BUF: StaticCell<[u8; 16]> = StaticCell::new();
+    let tx_buf = &mut TX_BUF.init([0; 16])[..];
+    static RX_BUF: StaticCell<[u8; 16]> = StaticCell::new();
+    let rx_buf = &mut RX_BUF.init([0; 16])[..];
+    let uart = BufferedUart::new(uart, Irqs, tx_pin, rx_pin, tx_buf, rx_buf, Config::default());
+    let (mut tx, rx) = uart.split();
+
+    unwrap!(spawner.spawn(reader(rx)));
+
+    info!("Writing...");
+    loop {
+        let data = [
+            1u8, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
+            29, 30, 31,
+        ];
+        info!("TX {:?}", data);
+        tx.write_all(&data).await.unwrap();
+        Timer::after_secs(1).await;
+    }
+}
+
+#[embassy_executor::task]
+async fn reader(mut rx: BufferedUartRx<'static, UART0>) {
+    info!("Reading...");
+    loop {
+        let mut buf = [0; 31];
+        rx.read_exact(&mut buf).await.unwrap();
+        info!("RX {:?}", buf);
+    }
+}
-- 
cgit 


From 6f03c40516b49104b33a51f6e189a7fc812c1068 Mon Sep 17 00:00:00 2001
From: Caleb Jamison <caleb@cbjamo.com>
Date: Thu, 8 Aug 2024 21:54:21 -0400
Subject: cargo fmt

---
 examples/rp23/src/bin/uart_buffered_split.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'examples/rp23/src/bin/uart_buffered_split.rs')

diff --git a/examples/rp23/src/bin/uart_buffered_split.rs b/examples/rp23/src/bin/uart_buffered_split.rs
index f7acdade9..2b14520d5 100644
--- a/examples/rp23/src/bin/uart_buffered_split.rs
+++ b/examples/rp23/src/bin/uart_buffered_split.rs
@@ -10,13 +10,13 @@
 use defmt::*;
 use embassy_executor::Spawner;
 use embassy_rp::bind_interrupts;
+use embassy_rp::block::ImageDef;
 use embassy_rp::peripherals::UART0;
 use embassy_rp::uart::{BufferedInterruptHandler, BufferedUart, BufferedUartRx, Config};
 use embassy_time::Timer;
 use embedded_io_async::{Read, Write};
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
-use embassy_rp::block::ImageDef;
 
 #[link_section = ".start_block"]
 #[used]
@@ -32,7 +32,6 @@ pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
     embassy_rp::binary_info_rp_program_build_attribute!(),
 ];
 
-
 bind_interrupts!(struct Irqs {
     UART0_IRQ => BufferedInterruptHandler<UART0>;
 });
-- 
cgit