Diff: main.cpp

Revision:

0:c5e2a50f0d5d

Child:

1:d049e15030ca

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Oct 25 10:32:26 2015 +0000
@@ -0,0 +1,50 @@
+
+#include "mbed.h"
+#include "stm32f4xx.h"
+#include "stm32f4xx_hal_tim_ex.h"
+#include "stm32f4xx_hal_conf.h"
+
+
+
+int16_t count1 = 10; 
+
+
+void EXTI0_IRQHandler(void)
+{
+    HAL_NVIC_ClearPendingIRQ(EXTI0_IRQn);
+    HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);
+}
+
+void HAL_GPIO_EXTI_Callback (uint16_t GPIO_Pin)
+{
+    if (GPIO_Pin == GPIO_PIN_0) {
+        count1 = 0;
+    }
+}
+
+int main()
+{
+    HAL_Init();
+
+    GPIO_InitTypeDef GPIO_InitStruct;
+    __GPIOA_CLK_ENABLE();
+    GPIO_InitStruct.Pin = GPIO_PIN_0;  //PA0 as interrupt test
+    GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
+    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+    HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
+    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 1);
+    HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 1);
+    HAL_NVIC_EnableIRQ(EXTI0_IRQn);
+
+
+    while (1) {
+
+        printf("loop%d\r\n", count1);
+        wait(1);
+
+
+    }
+
+}
\ No newline at end of file