kopia lustrzana https://github.com/stlink-org/stlink
235 wiersze
6.4 KiB
C
235 wiersze
6.4 KiB
C
/**
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******************************************************************************
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* @file Demo/src/main.c
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* @author MCD Application Team
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* @version V1.0.0
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* @date 09/13/2010
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* @brief Main program body
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******************************************************************************
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* @copy
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2>
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f10x.h"
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#include "stm32f10x_conf.h"
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#include "STM32vldiscovery.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define LSE_FAIL_FLAG 0x80
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#define LSE_PASS_FLAG 0x100
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/* Private macro -------------------------------------------------------------*/
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/* Private consts ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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u32 LSE_Delay = 0;
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u32 count = 0;
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u32 BlinkSpeed = 0;
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u32 KeyState = 0;
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static __IO uint32_t TimingDelay;
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/* Private function prototypes -----------------------------------------------*/
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void Delay(uint32_t nTime);
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void TimingDelay_Decrement(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program.
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* Enable GPIOx Clock */
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
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/* Initialise LEDs LD3&LD4, both off */
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STM32vldiscovery_LEDInit(LED3);
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STM32vldiscovery_LEDInit(LED4);
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STM32vldiscovery_LEDOff(LED3);
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STM32vldiscovery_LEDOff(LED4);
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/* Initialise USER Button */
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STM32vldiscovery_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
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/* Setup SysTick Timer for 1 msec interrupts */
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if (SysTick_Config(SystemCoreClock / 1000))
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{
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/* Capture error */
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while (1);
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}
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/* Enable access to the backup register => LSE can be enabled */
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PWR_BackupAccessCmd(ENABLE);
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/* Enable LSE (Low Speed External Oscillation) */
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RCC_LSEConfig(RCC_LSE_ON);
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/* Check the LSE Status */
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while(1)
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{
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if(LSE_Delay < LSE_FAIL_FLAG)
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{
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/* check whether LSE is ready, with 4 seconds timeout */
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Delay (500);
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LSE_Delay += 0x10;
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if(RCC_GetFlagStatus(RCC_FLAG_LSERDY) != RESET)
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{
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/* Set flag: LSE PASS */
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LSE_Delay |= LSE_PASS_FLAG;
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/* Turn Off Led4 */
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STM32vldiscovery_LEDOff(LED4);
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/* Disable LSE */
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RCC_LSEConfig(RCC_LSE_OFF);
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break;
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}
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}
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/* LSE_FAIL_FLAG = 0x80 */
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else if(LSE_Delay >= LSE_FAIL_FLAG)
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{
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if(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
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{
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/* Set flag: LSE FAIL */
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LSE_Delay |= LSE_FAIL_FLAG;
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/* Turn On Led4 */
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STM32vldiscovery_LEDOn(LED4);
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}
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/* Disable LSE */
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RCC_LSEConfig(RCC_LSE_OFF);
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break;
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}
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}
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/* main while */
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while(1)
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{
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if(0 == STM32vldiscovery_PBGetState(BUTTON_USER))
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{
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if(KeyState == 1)
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{
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if(0 == STM32vldiscovery_PBGetState(BUTTON_USER))
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{
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/* USER Button released */
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KeyState = 0;
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/* Turn Off LED4 */
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STM32vldiscovery_LEDOff(LED4);
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}
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}
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}
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else if(STM32vldiscovery_PBGetState(BUTTON_USER))
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{
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if(KeyState == 0)
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{
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if(STM32vldiscovery_PBGetState(BUTTON_USER))
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{
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/* USER Button released */
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KeyState = 1;
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/* Turn ON LED4 */
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STM32vldiscovery_LEDOn(LED4);
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Delay(1000);
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/* Turn OFF LED4 */
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STM32vldiscovery_LEDOff(LED4);
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/* BlinkSpeed: 0 -> 1 -> 2, then re-cycle */
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BlinkSpeed ++ ;
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}
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}
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}
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count++;
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Delay(100);
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/* BlinkSpeed: 0 */
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if(BlinkSpeed == 0)
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{
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if(4 == (count % 8))
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STM32vldiscovery_LEDOn(LED3);
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if(0 == (count % 8))
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STM32vldiscovery_LEDOff(LED3);
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}
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/* BlinkSpeed: 1 */
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if(BlinkSpeed == 1)
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{
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if(2 == (count % 4))
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STM32vldiscovery_LEDOn(LED3);
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if(0 == (count % 4))
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STM32vldiscovery_LEDOff(LED3);
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}
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/* BlinkSpeed: 2 */
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if(BlinkSpeed == 2)
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{
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if(0 == (count % 2))
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STM32vldiscovery_LEDOn(LED3);
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else
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STM32vldiscovery_LEDOff(LED3);
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}
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/* BlinkSpeed: 3 */
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else if(BlinkSpeed == 3)
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BlinkSpeed = 0;
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}
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}
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/**
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* @brief Inserts a delay time.
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* @param nTime: specifies the delay time length, in milliseconds.
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* @retval None
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*/
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void Delay(uint32_t nTime)
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{
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TimingDelay = nTime;
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while(TimingDelay != 0);
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}
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/**
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* @brief Decrements the TimingDelay variable.
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* @param None
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* @retval None
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*/
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void TimingDelay_Decrement(void)
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{
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if (TimingDelay != 0x00)
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{
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TimingDelay--;
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
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