From f1ffbf2f7edc2afbf83ce75c7a3e0f59da09de00 Mon Sep 17 00:00:00 2001
From: chanterheld <chanterheld@gmail.com>
Date: Thu, 2 Jan 2025 20:05:01 +0100
Subject: [PATCH] embassy-stm32. support g0 second flash bank

---
 embassy-stm32/src/flash/g.rs   | 18 ++++++++++++++++--
 embassy-stm32/src/flash/mod.rs |  4 ++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/embassy-stm32/src/flash/g.rs b/embassy-stm32/src/flash/g.rs
index 01a0c603f..d02e1435d 100644
--- a/embassy-stm32/src/flash/g.rs
+++ b/embassy-stm32/src/flash/g.rs
@@ -20,7 +20,7 @@ pub(crate) unsafe fn lock() {
 }
 pub(crate) unsafe fn unlock() {
     // Wait, while the memory interface is busy.
-    while pac::FLASH.sr().read().bsy() {}
+    wait_busy();
 
     // Unlock flash
     if pac::FLASH.cr().read().lock() {
@@ -53,12 +53,16 @@ pub(crate) unsafe fn blocking_write(start_address: u32, buf: &[u8; WRITE_SIZE])
 
 pub(crate) unsafe fn blocking_erase_sector(sector: &FlashSector) -> Result<(), Error> {
     let idx = (sector.start - super::FLASH_BASE as u32) / super::BANK1_REGION.erase_size as u32;
-    while pac::FLASH.sr().read().bsy() {}
+    wait_busy();
     clear_all_err();
 
     interrupt::free(|_| {
         pac::FLASH.cr().modify(|w| {
             w.set_per(true);
+            w.set_bker(sector.bank == crate::flash::FlashBank::Bank2);
+            #[cfg(flash_g0x0)]
+            w.set_pnb(idx as u16);
+            #[cfg(not(flash_g0x0))]
             w.set_pnb(idx as u8);
             w.set_strt(true);
         });
@@ -94,3 +98,13 @@ pub(crate) unsafe fn clear_all_err() {
     // This clears all "write 1 to clear" bits.
     pac::FLASH.sr().modify(|_| {});
 }
+
+#[cfg(any(flash_g0x0, flash_g0x1))]
+fn wait_busy(){
+    while pac::FLASH.sr().read().bsy() & pac::FLASH.sr().read().bsy2() {}
+}
+
+#[cfg(not(any(flash_g0x0, flash_g0x1)))]
+fn wait_busy(){
+    while pac::FLASH.sr().read().bsy() {}
+}
\ No newline at end of file
diff --git a/embassy-stm32/src/flash/mod.rs b/embassy-stm32/src/flash/mod.rs
index 88fe6a291..a7eb3fbcc 100644
--- a/embassy-stm32/src/flash/mod.rs
+++ b/embassy-stm32/src/flash/mod.rs
@@ -97,7 +97,7 @@ pub enum FlashBank {
 #[cfg_attr(flash_f2, path = "f2.rs")]
 #[cfg_attr(flash_f4, path = "f4.rs")]
 #[cfg_attr(flash_f7, path = "f7.rs")]
-#[cfg_attr(any(flash_g0, flash_g4c2, flash_g4c3, flash_g4c4), path = "g.rs")]
+#[cfg_attr(any(flash_g0x0, flash_g0x1, flash_g4c2, flash_g4c3, flash_g4c4), path = "g.rs")]
 #[cfg_attr(flash_h7, path = "h7.rs")]
 #[cfg_attr(flash_h7ab, path = "h7.rs")]
 #[cfg_attr(flash_u5, path = "u5.rs")]
@@ -107,7 +107,7 @@ pub enum FlashBank {
 #[cfg_attr(
     not(any(
         flash_l0, flash_l1, flash_l4, flash_l5, flash_wl, flash_wb, flash_f0, flash_f1, flash_f2, flash_f3, flash_f4,
-        flash_f7, flash_g0, flash_g4c2, flash_g4c3, flash_g4c4, flash_h7, flash_h7ab, flash_u5, flash_h50, flash_u0,
+        flash_f7, flash_g0x0, flash_g0x1, flash_g4c2, flash_g4c3, flash_g4c4, flash_h7, flash_h7ab, flash_u5, flash_h50, flash_u0,
         flash_h5,
     )),
     path = "other.rs"