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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/IWDG/IWDG_Reset/stm32f10x_it.c @ 0:c59513fd84fb

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Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 03 Oct 2011 21:19:15 +1030
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1 /**
2 ******************************************************************************
3 * @file IWDG/IWDG_Reset/stm32f10x_it.c
4 * @author MCD Application Team
5 * @version V3.5.0
6 * @date 08-April-2011
7 * @brief Main Interrupt Service Routines.
8 * This file provides template for all exceptions handler and peripherals
9 * interrupt service routine.
10 ******************************************************************************
11 * @attention
12 *
13 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
14 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
15 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
16 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
17 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
18 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
19 *
20 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
21 ******************************************************************************
22 */
23
24 /* Includes ------------------------------------------------------------------*/
25 #include "stm32f10x_it.h"
26 #include "stm32_eval.h"
27
28 /** @addtogroup STM32F10x_StdPeriph_Examples
29 * @{
30 */
31
32 /** @addtogroup IWDG_Reset
33 * @{
34 */
35
36 /* Private typedef -----------------------------------------------------------*/
37 /* Private define ------------------------------------------------------------*/
38 /* Private macro -------------------------------------------------------------*/
39 /* Private variables ---------------------------------------------------------*/
40 extern __IO uint32_t TimingDelay;
41 __IO uint16_t IC1ReadValue1 = 0, IC1ReadValue2 = 0;
42 __IO uint16_t CaptureNumber = 0;
43 __IO uint32_t Capture = 0;
44 extern uint32_t LsiFreq;
45
46 /* Private function prototypes -----------------------------------------------*/
47 /* Private functions ---------------------------------------------------------*/
48
49 /******************************************************************************/
50 /* Cortex-M3 Processor Exceptions Handlers */
51 /******************************************************************************/
52
53 /**
54 * @brief This function handles NMI exception.
55 * @param None
56 * @retval None
57 */
58 void NMI_Handler(void)
59 {
60 }
61
62 /**
63 * @brief This function handles Hard Fault exception.
64 * @param None
65 * @retval None
66 */
67 void HardFault_Handler(void)
68 {
69 /* Go to infinite loop when Hard Fault exception occurs */
70 while (1)
71 {}
72 }
73
74 /**
75 * @brief This function handles Memory Manage exception.
76 * @param None
77 * @retval None
78 */
79 void MemManage_Handler(void)
80 {
81 /* Go to infinite loop when Memory Manage exception occurs */
82 while (1)
83 {}
84 }
85
86 /**
87 * @brief This function handles Bus Fault exception.
88 * @param None
89 * @retval None
90 */
91 void BusFault_Handler(void)
92 {
93 /* Go to infinite loop when Bus Fault exception occurs */
94 while (1)
95 {}
96 }
97
98 /**
99 * @brief This function handles Usage Fault exception.
100 * @param None
101 * @retval None
102 */
103 void UsageFault_Handler(void)
104 {
105 /* Go to infinite loop when Usage Fault exception occurs */
106 while (1)
107 {}
108 }
109
110 /**
111 * @brief This function handles Debug Monitor exception.
112 * @param None
113 * @retval None
114 */
115 void DebugMon_Handler(void)
116 {
117 }
118
119 /**
120 * @brief This function handles SVCall exception.
121 * @param None
122 * @retval None
123 */
124 void SVC_Handler(void)
125 {
126 }
127
128 /**
129 * @brief This function handles PendSV_Handler exception.
130 * @param None
131 * @retval None
132 */
133 void PendSV_Handler(void)
134 {
135 }
136
137 /**
138 * @brief This function handles SysTick Handler.
139 * @param None
140 * @retval None
141 */
142 void SysTick_Handler(void)
143 {
144 TimingDelay--;
145 }
146
147 /******************************************************************************/
148 /* STM32F10x Peripherals Interrupt Handlers */
149 /******************************************************************************/
150
151 /**
152 * @brief This function handles External lines 9 to 5 interrupt request.
153 * @param None
154 * @retval None
155 */
156 void EXTI9_5_IRQHandler(void)
157 {
158 if (EXTI_GetITStatus(KEY_BUTTON_EXTI_LINE) != RESET)
159 {
160 /* Clear the Key Button EXTI Line Pending Bit */
161 EXTI_ClearITPendingBit(KEY_BUTTON_EXTI_LINE);
162
163 /* As the following address is invalid (not mapped), a Hardfault exception
164 will be generated with an infinite loop and when the IWDG counter reaches 0
165 the IWDG reset occurs */
166 *(__IO uint32_t *) 0x000000FF = 0xFF;
167 }
168 }
169
170 /**
171 * @brief This function handles TIM5 global interrupt request.
172 * @param None
173 * @retval None
174 */
175 void TIM5_IRQHandler(void)
176 {
177 if (TIM_GetITStatus(TIM5, TIM_IT_CC4) != RESET)
178 {
179 if(CaptureNumber == 0)
180 {
181 /* Get the Input Capture value */
182 IC1ReadValue1 = TIM_GetCapture4(TIM5);
183 }
184 else if(CaptureNumber == 1)
185 {
186 /* Get the Input Capture value */
187 IC1ReadValue2 = TIM_GetCapture4(TIM5);
188
189 /* Capture computation */
190 if (IC1ReadValue2 > IC1ReadValue1)
191 {
192 Capture = (IC1ReadValue2 - IC1ReadValue1);
193 }
194 else
195 {
196 Capture = ((0xFFFF - IC1ReadValue1) + IC1ReadValue2);
197 }
198 /* Frequency computation */
199 LsiFreq = (uint32_t) SystemCoreClock / Capture;
200 LsiFreq *= 8;
201 }
202
203 CaptureNumber++;
204
205 /* Clear TIM5 Capture compare interrupt pending bit */
206 TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
207 }
208 }
209
210 /******************************************************************************/
211 /* STM32F10x Peripherals Interrupt Handlers */
212 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
213 /* available peripheral interrupt handler's name please refer to the startup */
214 /* file (startup_stm32f10x_xx.s). */
215 /******************************************************************************/
216
217 /**
218 * @brief This function handles PPP interrupt request.
219 * @param None
220 * @retval None
221 */
222 /*void PPP_IRQHandler(void)
223 {
224 }*/
225
226 /**
227 * @}
228 */
229 /**
230 * @}
231 */
232
233 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/