From bdbebeef5541ba3f046f6bee63d23e6b84ddf37b Mon Sep 17 00:00:00 2001
From: andreika-git <andrei.home@gmail.com>
Date: Wed, 13 Dec 2023 14:41:36 +0200
Subject: [PATCH] Reset Cause for H7

---
 .../ports/stm32/stm32_reset_cause.cpp         | 35 +++++++++++++++----
 1 file changed, 29 insertions(+), 6 deletions(-)

diff --git a/firmware/hw_layer/ports/stm32/stm32_reset_cause.cpp b/firmware/hw_layer/ports/stm32/stm32_reset_cause.cpp
index 221cf8527b..9875f683ae 100644
--- a/firmware/hw_layer/ports/stm32/stm32_reset_cause.cpp
+++ b/firmware/hw_layer/ports/stm32/stm32_reset_cause.cpp
@@ -13,23 +13,46 @@
 #include "mpu_util.h"
 #endif  /* EFI_PROD_CODE */
 
+#ifdef STM32H7XX
+// Reset Status Register flags for H7
+#define IWDGRSTF RCC_RSR_IWDG1RSTF
+#define WWDGRSTF RCC_RSR_WWDG1RSTF
+#define SFTRSTF RCC_RSR_SFTRSTF
+#define PINRSTF RCC_RSR_PINRSTF
+#define LPWRRSTF RCC_RSR_LPWRRSTF
+#define BORRSTF RCC_RSR_BORRSTF
+#else
+// Control/Status Register flags for F4/F7
+#define IWDGRSTF RCC_CSR_IWDGRSTF
+#define WWDGRSTF RCC_CSR_WWDGRSTF
+#define SFTRSTF RCC_CSR_SFTRSTF
+#define PINRSTF RCC_CSR_PINRSTF
+#define LPWRRSTF RCC_CSR_LPWRRSTF
+#define BORRSTF RCC_CSR_BORRSTF
+#endif // STM32H7XX
 
 static Reset_Cause_t readMCUResetCause() {
+#ifdef STM32H7XX
+	uint32_t cause = RCC->RSR; // Read the Reset Status Register
+	// Clear reset flags for future reset detection
+	RCC->RSR |= RCC_RSR_RMVF;
+#else
 	uint32_t cause = RCC->CSR; // Read the Control/Status Register
 	// Clear reset flags for future reset detection
 	RCC->CSR |= RCC_CSR_RMVF;
+#endif
 
-	if (cause & RCC_CSR_IWDGRSTF) {
+	if (cause & IWDGRSTF) {
 		return Reset_Cause_IWatchdog;
-    } else if (cause & RCC_CSR_WWDGRSTF) {
+    } else if (cause & WWDGRSTF) {
         return Reset_Cause_WWatchdog;
-    } else if (cause & RCC_CSR_SFTRSTF) {
+    } else if (cause & SFTRSTF) {
     	return Reset_Cause_Soft_Reset;
-    } else if (cause & RCC_CSR_PINRSTF) {
+    } else if (cause & PINRSTF) {
 		return Reset_Cause_NRST_Pin;
-	} else if (cause & RCC_CSR_LPWRRSTF) {
+	} else if (cause & LPWRRSTF) {
 		return Reset_Cause_Illegal_Mode;
-	} else if (cause & RCC_CSR_BORRSTF) {
+	} else if (cause & BORRSTF) {
 		return Reset_Cause_BOR;
 	}
     return Reset_Cause_Unknown;