From afbb4cc73c44b6321cae39dbe46b97155805097d Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 13 Dec 2015 21:03:11 +0100 Subject: wip --- .../WWDG/WWDG_Reset/main.c | 171 +++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/WWDG/WWDG_Reset/main.c (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/WWDG/WWDG_Reset/main.c') diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/WWDG/WWDG_Reset/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/WWDG/WWDG_Reset/main.c new file mode 100644 index 0000000..e95ba1f --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/WWDG/WWDG_Reset/main.c @@ -0,0 +1,171 @@ +/** + ****************************************************************************** + * @file WWDG/WWDG_Reset/main.c + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Main program body. + ****************************************************************************** + * @attention + * + * 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. + * + *

© COPYRIGHT 2011 STMicroelectronics

+ ****************************************************************************** + */ + + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" +#include "stm32_eval.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup WWDG_Reset + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +__IO uint32_t TimingDelay = 0; + +/* Private function prototypes -----------------------------------------------*/ +void Delay(__IO uint32_t nTime); + +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief Main program. + * @param None + * @retval None + */ +int main(void) +{ + /*!< At this stage the microcontroller clock setting is already configured, + this is done through SystemInit() function which is called from startup + file (startup_stm32f10x_xx.s) before to branch to application main. + To reconfigure the default setting of SystemInit() function, refer to + system_stm32f10x.c file + */ + + /* Initialize LED1 and Key Button mounted on STM3210X-EVAL board */ + STM_EVAL_LEDInit(LED1); + STM_EVAL_LEDInit(LED2); + STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI); + + + /* Check if the system has resumed from WWDG reset */ + if (RCC_GetFlagStatus(RCC_FLAG_WWDGRST) != RESET) + { + /* WWDGRST flag set */ + /* Turn on LED1 */ + STM_EVAL_LEDOn(LED1); + + /* Clear reset flags */ + RCC_ClearFlag(); + } + else + { + /* WWDGRST flag is not set */ + /* Turn off LED1 */ + STM_EVAL_LEDOff(LED1); + } + + /* Setup SysTick Timer for 1 msec interrupts */ + if (SysTick_Config(SystemCoreClock / 1000)) + { + /* Capture error */ + while (1); + } + + /* WWDG configuration */ + /* Enable WWDG clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE); + +/* On Value line devices, WWDG clock counter = (PCLK1 (24MHz)/4096)/8 = 732 Hz (~1366 us) */ +/* On other devices, WWDG clock counter = (PCLK1(36MHz)/4096)/8 = 1099 Hz (~910 us) */ + WWDG_SetPrescaler(WWDG_Prescaler_8); + + /* Set Window value to 80; WWDG counter should be refreshed only when the counter + is below 80 (and greater than 64) otherwise a reset will be generated */ + WWDG_SetWindowValue(80); + + /* - On Value line devices, + Enable WWDG and set counter value to 127, WWDG timeout = ~1366 us * 64 = 87.42 ms + In this case the refresh window is: ~1366us * (127-80) = 64.20 ms < refresh window < ~1366us * 64 = 87.42ms + - On other devices + Enable WWDG and set counter value to 127, WWDG timeout = ~910 us * 64 = 58.25 ms + In this case the refresh window is: ~910 us * (127-80) = 42.77 ms < refresh window < ~910 us * 64 = 58.25ms + */ + WWDG_Enable(127); + + while (1) + { + /* Toggle LED2 */ + STM_EVAL_LEDToggle(LED2); + +#if !defined (STM32F10X_LD_VL) && !defined (STM32F10X_MD_VL) && !defined (STM32F10X_HD_VL) + /* Insert 44 ms delay */ + Delay(44); +#else + /* Insert 66 ms delay */ + Delay(66); +#endif + + /* Update WWDG counter */ + WWDG_SetCounter(127); + } +} + +/** + * @brief Inserts a delay time. + * @param nTime: specifies the delay time length, in milliseconds. + * @retval None + */ +void Delay(__IO uint32_t nTime) +{ + TimingDelay = nTime; + while(TimingDelay != 0) + { + } +} + +#ifdef USE_FULL_ASSERT + +/** + * @brief Reports the name of the source file and the source line number + * where the assert_param error has occurred. + * @param file: pointer to the source file name + * @param line: assert_param error line source number + * @retval None + */ +void assert_failed(uint8_t* file, uint32_t line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while (1) + {} +} + +#endif + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3