zephyr-build: add aux_display support and fixed the gpio interrupt for stm32 series.

The zephyr-build parser was missing aux_display support, which was included and used in a demo;

https://github.com/coskunergan/zephyr_rust_demo

Signed-off-by: coskun ergan <[email protected]>

Author: coskunergan

zephyr-sys/build.rs

@@ -76,6 +76,7 @@ fn main() -> Result<()> {
         .derive_copy(false)
         .allowlist_function("k_.*")
         .allowlist_function("gpio_.*")
+		.allowlist_function("auxdisplay_.*")
         .allowlist_function("flash_.*")
         .allowlist_item("GPIO_.*")
         .allowlist_item("FLASH_.*")

zephyr-sys/wrapper.h

@@ -42,7 +42,7 @@ extern int errno;
 #include <zephyr/logging/log.h>
 #include <zephyr/bluetooth/bluetooth.h>
 #include <zephyr/drivers/flash.h>
-
+#include <zephyr/drivers/auxdisplay.h>
 /*
  * bindgen will only output #defined constants that resolve to simple numbers.  These are some
  * symbols that we want exported that, at least in some situations, are more complex, usually with a

zephyr/src/device/gpio.rs

@@ -31,7 +31,7 @@ mod async_io {
     use embassy_sync::waitqueue::AtomicWaker;
     use zephyr_sys::{
         device, gpio_add_callback, gpio_callback, gpio_init_callback, gpio_pin_interrupt_configure,
-        gpio_pin_interrupt_configure_dt, gpio_port_pins_t, GPIO_INT_LEVEL_HIGH, GPIO_INT_LEVEL_LOW,
+        gpio_pin_interrupt_configure_dt, gpio_port_pins_t, GPIO_INT_EDGE_FALLING, GPIO_INT_EDGE_RISING, 
         ZR_GPIO_INT_MODE_DISABLE_ONLY,
     };
 
@@ -212,14 +212,19 @@ mod async_io {
             self.pin.data.register(self.pin.pin.pin, cx.waker());
 
             let mode = match self.level {
-                0 => GPIO_INT_LEVEL_LOW,
-                1 => GPIO_INT_LEVEL_HIGH,
+                0 => GPIO_INT_EDGE_FALLING/*GPIO_INT_LEVEL_LOW*/,
+                1 => GPIO_INT_EDGE_RISING/*GPIO_INT_LEVEL_HIGH*/,
                 _ => unreachable!(),
             };
 
             unsafe {
                 gpio_pin_interrupt_configure_dt(&self.pin.pin, mode);
 
+                if self.level == zephyr_sys::gpio_pin_get_raw(self.pin.pin.port,self.pin.pin.pin) as u8 {
+                    let cb = self.pin.data.callback.get();
+                    GpioStatic::callback_handler(self.pin.pin.port, cb, 1 << self.pin.pin.pin);
+                }
+
                 // Before sleeping, check if it fired, to avoid having to pend if it already
                 // happened.
                 if self.pin.data.has_fired(self.pin.pin.pin) {