Diff: targets/hal/TARGET_STM/TARGET_DISCO_F407VG/us_ticker.c

Revision:

242:7074e42da0b2

Parent:

133:d4dda5c437f0

--- a/targets/hal/TARGET_STM/TARGET_DISCO_F407VG/us_ticker.c	Thu Jun 26 10:30:09 2014 +0100
+++ b/targets/hal/TARGET_STM/TARGET_DISCO_F407VG/us_ticker.c	Fri Jun 27 07:30:09 2014 +0100
@@ -28,12 +28,8 @@
 #include <stddef.h>
 #include "us_ticker_api.h"
 #include "PeripheralNames.h"
-#include "stm32f4xx_hal.h"
 
-// 32-bit timer selection
 #define TIM_MST            TIM5
-#define TIM_MST_IRQ        TIM5_IRQn
-#define TIM_MST_RCC        __TIM5_CLK_ENABLE()
 
 static TIM_HandleTypeDef TimMasterHandle;
 static int us_ticker_inited = 0;
@@ -42,23 +38,9 @@
     if (us_ticker_inited) return;
     us_ticker_inited = 1;
   
-    // Enable timer clock
-    TIM_MST_RCC;
-  
-    // Configure time base
     TimMasterHandle.Instance = TIM_MST;
-    TimMasterHandle.Init.Period            = 0xFFFFFFFF;
-    TimMasterHandle.Init.Prescaler         = (uint32_t)(SystemCoreClock /  2 / 1000000) - 1; // 1 µs tick
-    TimMasterHandle.Init.ClockDivision     = 0;
-    TimMasterHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;
-    TimMasterHandle.Init.RepetitionCounter = 0;
-    HAL_TIM_OC_Init(&TimMasterHandle);
     
-    NVIC_SetVector(TIM_MST_IRQ, (uint32_t)us_ticker_irq_handler);
-    NVIC_EnableIRQ(TIM_MST_IRQ);
-  
-    // Enable timer
-    HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
+    HAL_InitTick(0); // The passed value is not used  
 }
 
 uint32_t us_ticker_read() {