wip: gpio async test: Force to work stm32

This is a bit of a hack to force this test to work on an stm32 board.
Although, it mostly just demonstrates that stm32 doesn't have level
triggered interrupts.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

dt-rust.yaml

@@ -35,6 +35,22 @@
         value: gpios
       device: crate::device::gpio::GpioPin
 
+# Hook up the gpio-keys as gpio pins as well
+- name: gpio-keys
+  rules:
+  - type: compatible
+    value:
+      names:
+      - gpio-keys
+      level: 1
+  actions:
+  - type: instance
+    value:
+      raw:
+        type: phandle
+        value: gpios
+      device: crate::device::gpio::GpioPin
+
 # Flash controllers don't have any particular property to identify them, so we need a list of
 # compatible values that should match.
 - name: flash-controller
@@ -46,6 +62,7 @@
       - "nordic,nrf51-flash-controller"
       - "raspberrypi,pico-flash-controller"
       - "st,stm32g4-flash-controller"
+      - "st,stm32l5-flash-controller"
       - "zephyr,sim-flash"
       level: 0
   actions:

samples/blinky/prj.conf

@@ -8,3 +8,7 @@ CONFIG_MAIN_STACK_SIZE=8192
 
 # Verify that userspace builds work.
 # CONFIG_USERSPACE=y
+
+CONFIG_UART_CONSOLE=n
+CONFIG_RTT_CONSOLE=y
+CONFIG_USE_SEGGER_RTT=y

tests/drivers/gpio-async/prj.conf

@@ -13,4 +13,8 @@ CONFIG_RUST_ALLOC=y
 CONFIG_GPIO=y
 CONFIG_GPIO_ENABLE_DISABLE_INTERRUPT=y
 
-CONFIG_LOG_BACKEND_RTT=n
+# CONFIG_LOG_BACKEND_RTT=n
+
+CONFIG_UART_CONSOLE=n
+CONFIG_RTT_CONSOLE=y
+CONFIG_USE_SEGGER_RTT=y

tests/drivers/gpio-async/src/lib.rs

@@ -35,13 +35,18 @@ async fn main(spawner: Spawner) {
     info!("Hello world");
     let _ = spawner;
 
+    /*
     let mut col0 = zephyr::devicetree::labels::col0::get_instance().unwrap();
     let mut row0 = zephyr::devicetree::labels::row0::get_instance().unwrap();
+    */
+    let mut row0 = zephyr::devicetree::aliases::sw0::get_instance().unwrap();
     let mut gpio_token = unsafe { zephyr::device::gpio::GpioToken::get_instance().unwrap() };
 
     unsafe {
+        /*
         col0.configure(&mut gpio_token, GPIO_OUTPUT_ACTIVE);
         col0.set(&mut gpio_token, true);
+        */
         row0.configure(&mut gpio_token, GPIO_INPUT | GPIO_PULL_DOWN);
     }
 

zephyr/src/device/gpio.rs

@@ -35,7 +35,7 @@ mod async_io {
         ZR_GPIO_INT_MODE_DISABLE_ONLY,
     };
 
-    use crate::sync::atomic::{AtomicBool, AtomicU32};
+    use crate::{printkln, sync::atomic::{AtomicBool, AtomicU32}};
 
     use super::{GpioPin, GpioToken};
 
@@ -112,6 +112,7 @@ mod async_io {
             cb: *mut gpio_callback,
             mut pins: gpio_port_pins_t,
         ) {
+            printkln!("GPIO callback: {}", pins);
             let data = unsafe {
                 cb.cast::<u8>()
                     .sub(mem::offset_of!(Self, callback))