From afbb4cc73c44b6321cae39dbe46b97155805097d Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 13 Dec 2015 21:03:11 +0100 Subject: wip --- .../SysTick/TimeBase/main.c | 173 +++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100644 tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SysTick/TimeBase/main.c (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SysTick/TimeBase/main.c') diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SysTick/TimeBase/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SysTick/TimeBase/main.c new file mode 100644 index 0000000..687ed68 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SysTick/TimeBase/main.c @@ -0,0 +1,173 @@ +/** + ****************************************************************************** + * @file SysTick/TimeBase/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 "main.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup SysTick_TimeBase + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +static __IO uint32_t TimingDelay; + +/* 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 Leds mounted on STM3210X-EVAL board */ + STM_EVAL_LEDInit(LED1); + STM_EVAL_LEDInit(LED2); + STM_EVAL_LEDInit(LED3); + STM_EVAL_LEDInit(LED4); + + /* Turn on LED1 and LED3 */ + STM_EVAL_LEDOn(LED1); + STM_EVAL_LEDOn(LED3); + + /* Setup SysTick Timer for 1 msec interrupts. + ------------------------------------------ + 1. The SysTick_Config() function is a CMSIS function which configure: + - The SysTick Reload register with value passed as function parameter. + - Configure the SysTick IRQ priority to the lowest value (0x0F). + - Reset the SysTick Counter register. + - Configure the SysTick Counter clock source to be Core Clock Source (HCLK). + - Enable the SysTick Interrupt. + - Start the SysTick Counter. + + 2. You can change the SysTick Clock source to be HCLK_Div8 by calling the + SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8) just after the + SysTick_Config() function call. The SysTick_CLKSourceConfig() is defined + inside the misc.c file. + + 3. You can change the SysTick IRQ priority by calling the + NVIC_SetPriority(SysTick_IRQn,...) just after the SysTick_Config() function + call. The NVIC_SetPriority() is defined inside the core_cm3.h file. + + 4. To adjust the SysTick time base, use the following formula: + + Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s) + + - Reload Value is the parameter to be passed for SysTick_Config() function + - Reload Value should not exceed 0xFFFFFF + */ + if (SysTick_Config(SystemCoreClock / 1000)) + { + /* Capture error */ + while (1); + } + + while (1) + { + /* Toggle LED2 and LED4 */ + STM_EVAL_LEDToggle(LED2); + STM_EVAL_LEDToggle(LED4); + + /* Insert 50 ms delay */ + Delay(50); + + /* Toggle LED1 and LED3 */ + STM_EVAL_LEDToggle(LED1); + STM_EVAL_LEDToggle(LED3); + + /* Insert 100 ms delay */ + Delay(100); + } +} + +/** + * @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); +} + +/** + * @brief Decrements the TimingDelay variable. + * @param None + * @retval None + */ +void TimingDelay_Decrement(void) +{ + if (TimingDelay != 0x00) + { + TimingDelay--; + } +} + +#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