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Diffstat (limited to 'stm32lib/src/stm32f10x_systick.c')
| -rw-r--r-- | stm32lib/src/stm32f10x_systick.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/stm32lib/src/stm32f10x_systick.c b/stm32lib/src/stm32f10x_systick.c new file mode 100644 index 0000000..53deb76 --- /dev/null +++ b/stm32lib/src/stm32f10x_systick.c @@ -0,0 +1,181 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : stm32f10x_systick.c
+* Author : MCD Application Team
+* Version : V2.0.2
+* Date : 07/11/2008
+* Description : This file provides all the SysTick firmware functions.
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_systick.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* ---------------------- SysTick registers bit mask -------------------- */
+/* CTRL TICKINT Mask */
+#define CTRL_TICKINT_Set ((u32)0x00000002)
+#define CTRL_TICKINT_Reset ((u32)0xFFFFFFFD)
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : SysTick_CLKSourceConfig
+* Description : Configures the SysTick clock source.
+* Input : - SysTick_CLKSource: specifies the SysTick clock source.
+* This parameter can be one of the following values:
+* - SysTick_CLKSource_HCLK_Div8: AHB clock divided by 8
+* selected as SysTick clock source.
+* - SysTick_CLKSource_HCLK: AHB clock selected as
+* SysTick clock source.
+* Output : None
+* Return : None
+*******************************************************************************/
+void SysTick_CLKSourceConfig(u32 SysTick_CLKSource)
+{
+ /* Check the parameters */
+ assert_param(IS_SYSTICK_CLK_SOURCE(SysTick_CLKSource));
+
+ if (SysTick_CLKSource == SysTick_CLKSource_HCLK)
+ {
+ SysTick->CTRL |= SysTick_CLKSource_HCLK;
+ }
+ else
+ {
+ SysTick->CTRL &= SysTick_CLKSource_HCLK_Div8;
+ }
+}
+
+/*******************************************************************************
+* Function Name : SysTick_SetReload
+* Description : Sets SysTick Reload value.
+* Input : - Reload: SysTick Reload new value.
+* This parameter must be a number between 1 and 0xFFFFFF.
+* Output : None
+* Return : None
+*******************************************************************************/
+void SysTick_SetReload(u32 Reload)
+{
+ /* Check the parameters */
+ assert_param(IS_SYSTICK_RELOAD(Reload));
+
+ SysTick->LOAD = Reload;
+}
+
+/*******************************************************************************
+* Function Name : SysTick_CounterCmd
+* Description : Enables or disables the SysTick counter.
+* Input : - SysTick_Counter: new state of the SysTick counter.
+* This parameter can be one of the following values:
+* - SysTick_Counter_Disable: Disable counter
+* - SysTick_Counter_Enable: Enable counter
+* - SysTick_Counter_Clear: Clear counter value to 0
+* Output : None
+* Return : None
+*******************************************************************************/
+void SysTick_CounterCmd(u32 SysTick_Counter)
+{
+ /* Check the parameters */
+ assert_param(IS_SYSTICK_COUNTER(SysTick_Counter));
+
+ if (SysTick_Counter == SysTick_Counter_Enable)
+ {
+ SysTick->CTRL |= SysTick_Counter_Enable;
+ }
+ else if (SysTick_Counter == SysTick_Counter_Disable)
+ {
+ SysTick->CTRL &= SysTick_Counter_Disable;
+ }
+ else /* SysTick_Counter == SysTick_Counter_Clear */
+ {
+ SysTick->VAL = SysTick_Counter_Clear;
+ }
+}
+
+/*******************************************************************************
+* Function Name : SysTick_ITConfig
+* Description : Enables or disables the SysTick Interrupt.
+* Input : - NewState: new state of the SysTick Interrupt.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void SysTick_ITConfig(FunctionalState NewState)
+{
+ /* Check the parameters */
+ assert_param(IS_FUNCTIONAL_STATE(NewState));
+
+ if (NewState != DISABLE)
+ {
+ SysTick->CTRL |= CTRL_TICKINT_Set;
+ }
+ else
+ {
+ SysTick->CTRL &= CTRL_TICKINT_Reset;
+ }
+}
+
+/*******************************************************************************
+* Function Name : SysTick_GetCounter
+* Description : Gets SysTick counter value.
+* Input : None
+* Output : None
+* Return : SysTick current value
+*******************************************************************************/
+u32 SysTick_GetCounter(void)
+{
+ return(SysTick->VAL);
+}
+
+/*******************************************************************************
+* Function Name : SysTick_GetFlagStatus
+* Description : Checks whether the specified SysTick flag is set or not.
+* Input : - SysTick_FLAG: specifies the flag to check.
+* This parameter can be one of the following values:
+* - SysTick_FLAG_COUNT
+* - SysTick_FLAG_SKEW
+* - SysTick_FLAG_NOREF
+* Output : None
+* Return : None
+*******************************************************************************/
+FlagStatus SysTick_GetFlagStatus(u8 SysTick_FLAG)
+{
+ u32 statusreg = 0, tmp = 0 ;
+ FlagStatus bitstatus = RESET;
+
+ /* Check the parameters */
+ assert_param(IS_SYSTICK_FLAG(SysTick_FLAG));
+
+ /* Get the SysTick register index */
+ tmp = SysTick_FLAG >> 3;
+
+ if (tmp == 2) /* The flag to check is in CTRL register */
+ {
+ statusreg = SysTick->CTRL;
+ }
+ else /* The flag to check is in CALIB register */
+ {
+ statusreg = SysTick->CALIB;
+ }
+
+ if ((statusreg & ((u32)1 << SysTick_FLAG)) != (u32)RESET)
+ {
+ bitstatus = SET;
+ }
+ else
+ {
+ bitstatus = RESET;
+ }
+ return bitstatus;
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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