Merge #1457

1457: TL Mbox read and write for stm32wb r=xoviat a=OueslatiGhaith

Hello,

This pull request is related to #1397 and #1401, inspired by #24, built upon the work done in #1405 and #1424, and was tested on an stm32wb55rg.

This pull request aims to add read and write functionality to the TL mailbox for stm32wb microcontrollers

Co-authored-by: goueslati <ghaith.oueslati@habemus.com>
Co-authored-by: xoviat <xoviat@users.noreply.github.com>

examples/stm32wb/memory.x

@@ -11,7 +11,7 @@ MEMORY
 }
 
 /* 
-    Memory size for STM32WB55xC with 512K FLASH
+    Memory size for STM32WB55xG with 512K FLASH
 
     MEMORY
     {

examples/stm32wb/src/bin/tl_mbox.rs

@@ -4,6 +4,7 @@
 
 use defmt::*;
 use embassy_executor::Spawner;
+use embassy_stm32::interrupt;
 use embassy_stm32::ipcc::{Config, Ipcc};
 use embassy_stm32::tl_mbox::TlMbox;
 use embassy_time::{Duration, Timer};
@@ -27,6 +28,7 @@ async fn main(_spawner: Spawner) {
         - Once complete, in the Release_Notes.html, find the memory address that corresponds to your device for the
           stm32wb5x_BLE_Stack_full_fw.bin file. It should not be the same memory address.
         - Select that file, the memory address, "verify download", and then "Firmware Upgrade".
+        - Select "Start Wireless Stack".
         - Disconnect from the device.
         - In the examples folder for stm32wb, modify the memory.x file to match your target device.
         - Run this example.
@@ -40,7 +42,10 @@ async fn main(_spawner: Spawner) {
     let config = Config::default();
     let mut ipcc = Ipcc::new(p.IPCC, config);
 
-    let mbox = TlMbox::init(&mut ipcc);
+    let rx_irq = interrupt::take!(IPCC_C1_RX);
+    let tx_irq = interrupt::take!(IPCC_C1_TX);
+
+    let mbox = TlMbox::init(&mut ipcc, rx_irq, tx_irq);
 
     loop {
         let wireless_fw_info = mbox.wireless_fw_info();

examples/stm32wb/src/bin/tl_mbox_tx_rx.rs

@@ -0,0 +1,97 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_stm32::interrupt;
+use embassy_stm32::ipcc::{Config, Ipcc};
+use embassy_stm32::tl_mbox::TlMbox;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    /*
+        How to make this work:
+
+        - Obtain a NUCLEO-STM32WB55 from your preferred supplier.
+        - Download and Install STM32CubeProgrammer.
+        - Download stm32wb5x_FUS_fw.bin, stm32wb5x_BLE_Stack_full_fw.bin, and Release_Notes.html from
+          gh:STMicroelectronics/STM32CubeWB@2234d97/Projects/STM32WB_Copro_Wireless_Binaries/STM32WB5x
+        - Open STM32CubeProgrammer
+        - On the right-hand pane, click "firmware upgrade" to upgrade the st-link firmware.
+        - Once complete, click connect to connect to the device.
+        - On the left hand pane, click the RSS signal icon to open "Firmware Upgrade Services".
+        - In the Release_Notes.html, find the memory address that corresponds to your device for the stm32wb5x_FUS_fw.bin file
+        - Select that file, the memory address, "verify download", and then "Firmware Upgrade".
+        - Once complete, in the Release_Notes.html, find the memory address that corresponds to your device for the
+          stm32wb5x_BLE_Stack_full_fw.bin file. It should not be the same memory address.
+        - Select that file, the memory address, "verify download", and then "Firmware Upgrade".
+        - Select "Start Wireless Stack".
+        - Disconnect from the device.
+        - In the examples folder for stm32wb, modify the memory.x file to match your target device.
+        - Run this example.
+
+        Note: extended stack versions are not supported at this time. Do not attempt to install a stack with "extended" in the name.
+    */
+
+    let p = embassy_stm32::init(Default::default());
+    info!("Hello World!");
+
+    let config = Config::default();
+    let mut ipcc = Ipcc::new(p.IPCC, config);
+
+    let rx_irq = interrupt::take!(IPCC_C1_RX);
+    let tx_irq = interrupt::take!(IPCC_C1_TX);
+
+    let mbox = TlMbox::init(&mut ipcc, rx_irq, tx_irq);
+
+    // initialize ble stack, does not return a response
+    mbox.shci_ble_init(&mut ipcc, Default::default());
+
+    info!("waiting for coprocessor to boot");
+    let event_box = mbox.read().await;
+
+    let mut payload = [0u8; 6];
+    event_box.copy_into_slice(&mut payload).unwrap();
+
+    let event_packet = event_box.evt();
+    let kind = event_packet.evt_serial.kind;
+
+    // means recieved SYS event, which indicates in this case that the coprocessor is ready
+    if kind == 0x12 {
+        let code = event_packet.evt_serial.evt.evt_code;
+        let payload_len = event_packet.evt_serial.evt.payload_len;
+
+        info!(
+            "==> kind: {:#04x}, code: {:#04x}, payload_length: {}, payload: {:#04x}",
+            kind,
+            code,
+            payload_len,
+            payload[3..]
+        );
+    }
+
+    mbox.shci_ble_init(&mut ipcc, Default::default());
+
+    info!("resetting BLE");
+    mbox.send_ble_cmd(&mut ipcc, &[0x01, 0x03, 0x0c, 0x00, 0x00]);
+
+    let event_box = mbox.read().await;
+
+    let mut payload = [0u8; 7];
+    event_box.copy_into_slice(&mut payload).unwrap();
+
+    let event_packet = event_box.evt();
+    let kind = event_packet.evt_serial.kind;
+
+    let code = event_packet.evt_serial.evt.evt_code;
+    let payload_len = event_packet.evt_serial.evt.payload_len;
+
+    info!(
+        "==> kind: {:#04x}, code: {:#04x}, payload_length: {}, payload: {:#04x}",
+        kind, code, payload_len, payload
+    );
+
+    loop {}
+}