From 500ffc0acb4014e334d9d1f23a45a1f65c02aa17 Mon Sep 17 00:00:00 2001
From: everdrone <giorgiotropiano@gmail.com>
Date: Sun, 21 Sep 2025 14:52:11 +0200
Subject: Fix EXTI, DTS and FLASH for N6 family

---
 embassy-stm32/src/dts/tsel.rs | 17 +++++++++++++++++
 embassy-stm32/src/exti.rs     | 16 ++++++++--------
 embassy-stm32/src/lib.rs      |  2 +-
 3 files changed, 26 insertions(+), 9 deletions(-)

diff --git a/embassy-stm32/src/dts/tsel.rs b/embassy-stm32/src/dts/tsel.rs
index 99eab6dd8..79c697c8d 100644
--- a/embassy-stm32/src/dts/tsel.rs
+++ b/embassy-stm32/src/dts/tsel.rs
@@ -49,3 +49,20 @@ pub enum TriggerSel {
     /// EXTI13
     Exti13 = 4,
 }
+
+/// Trigger selection for N6
+#[cfg(stm32n6)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum TriggerSel {
+    /// Software triggering. Performs continuous measurements.
+    Software = 0,
+    /// LPTIM4 OUT
+    Lptim4 = 1,
+    /// LPTIM2 CH1
+    Lptim2 = 2,
+    /// LPTIM3 CH1
+    Lptim3 = 3,
+    /// EXTI13
+    Exti13 = 4,
+}
diff --git a/embassy-stm32/src/exti.rs b/embassy-stm32/src/exti.rs
index 9fce78f95..376fdccb8 100644
--- a/embassy-stm32/src/exti.rs
+++ b/embassy-stm32/src/exti.rs
@@ -31,11 +31,11 @@ fn cpu_regs() -> pac::exti::Exti {
     EXTI
 }
 
-#[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, gpio_v1, exti_u5, exti_h5, exti_h50)))]
+#[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, gpio_v1, exti_u5, exti_h5, exti_h50, exti_n6)))]
 fn exticr_regs() -> pac::syscfg::Syscfg {
     pac::SYSCFG
 }
-#[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50))]
+#[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6))]
 fn exticr_regs() -> pac::exti::Exti {
     EXTI
 }
@@ -45,9 +45,9 @@ fn exticr_regs() -> pac::afio::Afio {
 }
 
 unsafe fn on_irq() {
-    #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50)))]
+    #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6)))]
     let bits = EXTI.pr(0).read().0;
-    #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50))]
+    #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6))]
     let bits = EXTI.rpr(0).read().0 | EXTI.fpr(0).read().0;
 
     // We don't handle or change any EXTI lines above 16.
@@ -62,9 +62,9 @@ unsafe fn on_irq() {
     }
 
     // Clear pending
-    #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50)))]
+    #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6)))]
     EXTI.pr(0).write_value(Lines(bits));
-    #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50))]
+    #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6))]
     {
         EXTI.rpr(0).write_value(Lines(bits));
         EXTI.fpr(0).write_value(Lines(bits));
@@ -239,9 +239,9 @@ impl<'a> ExtiInputFuture<'a> {
             EXTI.ftsr(0).modify(|w| w.set_line(pin, falling));
 
             // clear pending bit
-            #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50)))]
+            #[cfg(not(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6)))]
             EXTI.pr(0).write(|w| w.set_line(pin, true));
-            #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50))]
+            #[cfg(any(exti_c0, exti_g0, exti_u0, exti_l5, exti_u5, exti_h5, exti_h50, exti_n6))]
             {
                 EXTI.rpr(0).write(|w| w.set_line(pin, true));
                 EXTI.fpr(0).write(|w| w.set_line(pin, true));
diff --git a/embassy-stm32/src/lib.rs b/embassy-stm32/src/lib.rs
index 292586ee4..6abd60eb0 100644
--- a/embassy-stm32/src/lib.rs
+++ b/embassy-stm32/src/lib.rs
@@ -531,7 +531,7 @@ fn init_hw(config: Config) -> Peripherals {
         rcc::enable_and_reset_with_cs::<peripherals::SYSCFG>(cs);
         #[cfg(not(any(stm32h5, stm32h7, stm32h7rs, stm32wb, stm32wl)))]
         rcc::enable_and_reset_with_cs::<peripherals::PWR>(cs);
-        #[cfg(not(any(stm32f2, stm32f4, stm32f7, stm32l0, stm32h5, stm32h7, stm32h7rs)))]
+        #[cfg(all(flash, not(any(stm32f2, stm32f4, stm32f7, stm32l0, stm32h5, stm32h7, stm32h7rs))))]
         rcc::enable_and_reset_with_cs::<peripherals::FLASH>(cs);
 
         // Enable the VDDIO2 power supply on chips that have it.
-- 
cgit