From cfb02cebff0e9c85de18cd29d75525ece82586dd Mon Sep 17 00:00:00 2001
From: Andreas Ortner <andreas.ortner@omicronenergy.com>
Date: Tue, 16 Jun 2020 06:59:45 +0200
Subject: [PATCH] make and main.c changes to support STM32F446RE Nucelo board

* Just added STM32F446RE to the make file as DEVICE. Note that this
change should not really be pulled into master, I just wanted to commit
a working and consistent version into the branches.
* the main simply checks the define for the Nucleo board and adapts the
LED port and pin accordingly
* Note that the compiled binary was tested with the Nucleo STM32F446RE
board
---
 Makefile   |  2 +-
 src/main.c | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 343e0fe..568f136 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-DEVICE = STM32F407xE
+DEVICE = STM32F446RE
 FLASH  = 0x08000000
 
 USE_ST_CMSIS = true
diff --git a/src/main.c b/src/main.c
index 1e1228f..92ebd1a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -7,8 +7,12 @@ static void delay (unsigned int time) {
 }
 
 int main (void) {
-    // Turn on the GPIOC peripheral
+    // Turn on the GPIOx peripheral
+#if defined(STM32F446xx)
+    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
+#else
     RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;
+#endif
 
     // Put pin 13 in general purpose output mode
     // Note: The only difference here is the name of the register in the
@@ -16,6 +20,8 @@ int main (void) {
 #if defined(STM32F413xx) || \
     defined(STM32F423xx)
     GPIOC->MODER |= GPIO_MODER_MODE13_0;
+#elif defined(STM32F446xx)
+    GPIOA->MODER |= GPIO_MODER_MODE5_0;
 #else
     GPIOC->MODER |= GPIO_MODER_MODER13_0;
 #endif
@@ -25,6 +31,8 @@ int main (void) {
 #if defined(STM32F413xx) || \
     defined(STM32F423xx)
         GPIOC->BSRR = GPIO_BSRR_BR_13;
+#elif defined(STM32F446xx)
+    	GPIOA->BSRR = GPIO_BSRR_BR_5;
 #else
         GPIOC->BSRR = GPIO_BSRR_BR13;
 #endif
@@ -35,6 +43,8 @@ int main (void) {
 #if defined(STM32F413xx) || \
     defined(STM32F423xx)
         GPIOC->BSRR = GPIO_BSRR_BS_13;
+#elif defined(STM32F446xx)
+	GPIOA->BSRR = GPIO_BSRR_BS_5;
 #else
         GPIOC->BSRR = GPIO_BSRR_BS13;
 #endif
@@ -45,3 +55,4 @@ int main (void) {
     // Return 0 to satisfy compiler
     return 0;
 }
+