Gpio fix

examples/blinky/CMakeLists.txt

@@ -1,4 +1,4 @@
-add_executable(blinky main.c ${CMAKE_SOURCE_DIR}/startup/startup_stm32f401.c)
+add_executable(blinky main.c ${CMAKE_SOURCE_DIR}/startup/stm32f401.c)
 
 target_link_libraries(blinky 
     hal_stm32f401

examples/blinky/main.c

@@ -7,7 +7,6 @@
 int main(void) {
     fpu_init();
     rcc_init();
-    rcc_enable_gpioc();
     gpio_init_pc13();
 
     while (1) {

examples/rtos_demo/CMakeLists.txt

@@ -1,4 +1,4 @@
-add_executable(rtos_demo main.c ${CMAKE_SOURCE_DIR}/startup/startup_stm32f401.c)
+add_executable(rtos_demo main.c ${CMAKE_SOURCE_DIR}/startup/stm32f401.c)
 
 target_link_libraries(rtos_demo
     hal_stm32f401

examples/rtos_demo/main.c

@@ -1,6 +1,7 @@
 #include "gpio.h"
 #include "rcc.h"
 #include "fpu.h"
+#include "nvic.h"
 #include "scheduler.h"
 #include "fault_indicator.h"
 #include <stdint.h>
@@ -11,8 +12,8 @@ void task_two(void);
 int main(void) {
     fpu_init();
     rcc_init();
-    rcc_enable_gpioc();
     gpio_init_pc13();
+    nvic_init();
 
     task_create(&task_one, 1, "task one");
     task_create(&task_two, 2, "task two");

src/hal/stm32f401/src/gpio.c

@@ -6,9 +6,13 @@
     Moder configs whether pin is input, output, ect.
 */
 void gpio_init_pc13(void) {
+    /*Turn on the clock for the GPIO C port*/
+    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;
+
     /* Reset */
     GPIOC->MODER &= ~(3U << 26);
 
+    /* Configure pin functionality (in this case as output) */
     uint32_t enable_output_mode = 1U << 26;
     GPIOC->MODER |= enable_output_mode;
 }

src/hal/stm32f401/src/rcc.c

@@ -60,8 +60,4 @@ void rcc_init(void) {
 
     /* Wait for System Clock Switch*/
     while((RCC->CFGR & RCC_CFGR_SWS_Msk) != (2U << RCC_CFGR_SWS_Pos));
-}
-
-void rcc_enable_gpioc(void) {
-    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;
 }