Add BBC micro:bit v2 support for examples

README.md

@@ -73,15 +73,15 @@ Flashing the softdevice is required. It is NOT part of the built binary. You onl
 - As a debug client, if you are using
   - probe-rs:
     - Erase the flash with `probe-rs erase --chip nrf52840_xxAA` (You may have to supply additional `--allow-erase-all` argument).
-    - Flash the SoftDevice with `probe-rs download --verify --format hex --chip nRF52840_xxAA s140_nrf52_7.X.X_softdevice.hex`
+    - Flash the SoftDevice with `probe-rs download --verify --binary-format hex --chip nRF52840_xxAA s140_nrf52_7.X.X_softdevice.hex`
   - nrfjprog:
     - Flash the SoftDevice with `nrfjprog --family NRF52 --chiperase --verify --program s140_nrf52_7.0.1_softdevice.hex`
 
 To run an example, simply use `cargo run` from the `examples` folder:
 
-- `cd examples && cargo run --bin ble_bas_peripheral --features nrf52840`
+- `cd examples && cargo run --bin ble_bas_peripheral --features nrf52840-dk`
 
-Examples can also built for nrf52832 chip targeting S132 softdevice.
+Examples can also built for nrf52832 development kit targeting S132 softdevice (feature flag `nrf52832-dk`), or for nrf52833 targeting S140 softdevice on the BBC micro:bit v2 (feature flag `microbit-v2`). In these cases, edit `.cargo/config.toml` as needed.
 
 ## Configuring a SoftDevice
 

ci.sh

@@ -6,8 +6,9 @@ set -euxo pipefail
 #===============
 
 cd examples
-cargo build --target thumbv7em-none-eabihf --features nrf52832 --bins
-cargo build --target thumbv7em-none-eabihf --features nrf52840 --bins
+cargo build --target thumbv7em-none-eabihf --features nrf52832-dk --bins
+cargo build --target thumbv7em-none-eabihf --features microbit-v2 --bins
+cargo build --target thumbv7em-none-eabihf --features nrf52840-dk --bins
 cd ..
 
 

examples/.cargo/config.toml

@@ -1,4 +1,7 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# Pick ONE of these chip targets
+#runner = "probe-rs run --chip nRF52832_xxAA"
+#runner = "probe-rs run --chip nRF52833_xxAA"
 runner = "probe-rs run --chip nRF52840_xxAA"
 
 [build]

examples/Cargo.toml

@@ -23,13 +23,23 @@ nrf52832 = [
   "nrf-softdevice/s132",
   "dep:nrf-softdevice-s132"
 ]
+nrf52833 = [
+  "embassy-nrf/nrf52833",
+  "nrf-softdevice/nrf52833",
+  "nrf-softdevice/s140",
+  "dep:nrf-softdevice-s140"
+]
 nrf52840 = [
   "embassy-nrf/nrf52840",
   "nrf-softdevice/nrf52840",
   "nrf-softdevice/s140",
   "dep:nrf-softdevice-s140"
 ]
 
+nrf52840-dk = ["nrf52840"]
+nrf52832-dk = ["nrf52832"]
+microbit-v2 = ["nrf52833"]
+
 [dependencies]
 embassy-executor = { version = "0.5.0", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers"]}
 embassy-time = { version = "0.3.0", features = ["defmt", "defmt-timestamp-uptime"]}

examples/build.rs

@@ -16,6 +16,8 @@ use std::path::PathBuf;
 fn linker_data() -> &'static [u8] {
     #[cfg(feature = "nrf52832")]
     return include_bytes!("memory-nrf52832.x");
+    #[cfg(feature = "nrf52833")]
+    return include_bytes!("memory-nrf52833.x");
     #[cfg(feature = "nrf52840")]
     return include_bytes!("memory-nrf52840.x");
 
@@ -24,9 +26,8 @@ fn linker_data() -> &'static [u8] {
         feature = "nrf52810",
         feature = "nrf52811",
         feature = "nrf52820",
-        feature = "nrf52833",
     ))]
-    panic!("Unable to build examples for currently selected chip due to missing chip-specific linker configuration (memory.x)");
+    panic!("Unable to build examples for currently selected chip due to missing chip-specific linker configuration (memory.x)")
 }
 
 fn main() {

examples/memory-nrf52833.x

@@ -0,0 +1,7 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  /* NRF52833 with Softdevice S140 7.3.0 */
+  FLASH : ORIGIN = 0x00000000 + 156K, LENGTH = 512K - 156K
+  RAM : ORIGIN = 0x20000000 + 31K, LENGTH = 128K - 31K
+}

examples/memory-nrf52840.x

@@ -1,7 +1,7 @@
 MEMORY
 {
   /* NOTE 1 K = 1 KiBi = 1024 bytes */
-  /* NRF52840 with Softdevice S140 7.0.1 */
-  FLASH : ORIGIN = 0x00027000, LENGTH = 868K
-  RAM : ORIGIN = 0x20020000, LENGTH = 128K
+  /* NRF52840 with Softdevice S140 7.3.0 */
+  FLASH : ORIGIN = 0x00000000 + 156K, LENGTH = 1024K - 156K
+  RAM : ORIGIN = 0x20000000 + 31K, LENGTH = 256K - 31K
 }

examples/src/bin/ble_peripheral_onoff.rs

@@ -121,10 +121,15 @@ async fn main(spawner: Spawner) {
     unwrap!(spawner.spawn(softdevice_task(sd)));
 
     info!("Bluetooth is OFF");
-    info!("Press nrf52840-dk button 1 to enable, button 2 to disable");
+    info!("Press button 1 to enable, button 2 to disable");
+    #[cfg(feature = "microbit-v2")]
+    let (b1_pin, b2_pin) = (p.P0_14, p.P0_23);
+    #[cfg(any(feature = "nrf52840-dk", feature = "nrf52832-dk"))]
+    let (b1_pin, b2_pin) = (p.P0_11, p.P0_12);
+
+    let button1 = Input::new(b1_pin.degrade(), Pull::Up);
+    let button2 = Input::new(b2_pin.degrade(), Pull::Up);
 
-    let button1 = Input::new(p.P0_11.degrade(), Pull::Up);
-    let button2 = Input::new(p.P0_12.degrade(), Pull::Up);
     pin_mut!(button1);
     pin_mut!(button2);
     loop {