2 ******************************************************************************
\r
3 * @file Demo/src/main.c
\r
4 * @author MCD Application Team
\r
7 * @brief Main program body
\r
8 ******************************************************************************
\r
11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
\r
12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
\r
13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
\r
14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
\r
15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
\r
16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
\r
18 * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2>
\r
21 /* Includes ------------------------------------------------------------------*/
\r
22 #include "stm32f10x.h"
\r
23 #include "stm32f10x_conf.h"
\r
24 #include "STM32vldiscovery.h"
\r
26 /* Private typedef -----------------------------------------------------------*/
\r
27 /* Private define ------------------------------------------------------------*/
\r
28 #define LSE_FAIL_FLAG 0x80
\r
29 #define LSE_PASS_FLAG 0x100
\r
30 /* Private macro -------------------------------------------------------------*/
\r
31 /* Private consts ------------------------------------------------------------*/
\r
33 /* Private variables ---------------------------------------------------------*/
\r
38 static __IO uint32_t TimingDelay;
\r
39 /* Private function prototypes -----------------------------------------------*/
\r
40 void Delay(uint32_t nTime);
\r
41 void TimingDelay_Decrement(void);
\r
43 /* Private functions ---------------------------------------------------------*/
\r
46 * @brief Main program.
\r
53 /* Enable GPIOx Clock */
\r
54 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
\r
56 /* Initialise LEDs LD3&LD4, both off */
\r
57 STM32vldiscovery_LEDInit(LED3);
\r
58 STM32vldiscovery_LEDInit(LED4);
\r
60 STM32vldiscovery_LEDOff(LED3);
\r
61 STM32vldiscovery_LEDOff(LED4);
\r
63 /* Initialise USER Button */
\r
64 STM32vldiscovery_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
\r
66 /* Setup SysTick Timer for 1 msec interrupts */
\r
67 if (SysTick_Config(SystemCoreClock / 1000))
\r
69 /* Capture error */
\r
73 /* Enable access to the backup register => LSE can be enabled */
\r
74 PWR_BackupAccessCmd(ENABLE);
\r
76 /* Enable LSE (Low Speed External Oscillation) */
\r
77 RCC_LSEConfig(RCC_LSE_ON);
\r
79 /* Check the LSE Status */
\r
82 if(LSE_Delay < LSE_FAIL_FLAG)
\r
84 /* check whether LSE is ready, with 4 seconds timeout */
\r
87 if(RCC_GetFlagStatus(RCC_FLAG_LSERDY) != RESET)
\r
89 /* Set flag: LSE PASS */
\r
90 LSE_Delay |= LSE_PASS_FLAG;
\r
92 STM32vldiscovery_LEDOff(LED4);
\r
94 RCC_LSEConfig(RCC_LSE_OFF);
\r
99 /* LSE_FAIL_FLAG = 0x80 */
\r
100 else if(LSE_Delay >= LSE_FAIL_FLAG)
\r
102 if(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
\r
104 /* Set flag: LSE FAIL */
\r
105 LSE_Delay |= LSE_FAIL_FLAG;
\r
107 STM32vldiscovery_LEDOn(LED4);
\r
110 RCC_LSEConfig(RCC_LSE_OFF);
\r
118 if(0 == STM32vldiscovery_PBGetState(BUTTON_USER))
\r
122 if(0 == STM32vldiscovery_PBGetState(BUTTON_USER))
\r
124 /* USER Button released */
\r
126 /* Turn Off LED4 */
\r
127 STM32vldiscovery_LEDOff(LED4);
\r
131 else if(STM32vldiscovery_PBGetState(BUTTON_USER))
\r
135 if(STM32vldiscovery_PBGetState(BUTTON_USER))
\r
137 /* USER Button released */
\r
140 STM32vldiscovery_LEDOn(LED4);
\r
142 /* Turn OFF LED4 */
\r
143 STM32vldiscovery_LEDOff(LED4);
\r
144 /* BlinkSpeed: 0 -> 1 -> 2, then re-cycle */
\r
151 /* BlinkSpeed: 0 */
\r
152 if(BlinkSpeed == 0)
\r
154 if(4 == (count % 8))
\r
155 STM32vldiscovery_LEDOn(LED3);
\r
156 if(0 == (count % 8))
\r
157 STM32vldiscovery_LEDOff(LED3);
\r
159 /* BlinkSpeed: 1 */
\r
160 if(BlinkSpeed == 1)
\r
162 if(2 == (count % 4))
\r
163 STM32vldiscovery_LEDOn(LED3);
\r
164 if(0 == (count % 4))
\r
165 STM32vldiscovery_LEDOff(LED3);
\r
167 /* BlinkSpeed: 2 */
\r
168 if(BlinkSpeed == 2)
\r
170 if(0 == (count % 2))
\r
171 STM32vldiscovery_LEDOn(LED3);
\r
173 STM32vldiscovery_LEDOff(LED3);
\r
175 /* BlinkSpeed: 3 */
\r
176 else if(BlinkSpeed == 3)
\r
182 * @brief Inserts a delay time.
\r
183 * @param nTime: specifies the delay time length, in milliseconds.
\r
186 void Delay(uint32_t nTime)
\r
188 TimingDelay = nTime;
\r
190 while(TimingDelay != 0);
\r
194 * @brief Decrements the TimingDelay variable.
\r
198 void TimingDelay_Decrement(void)
\r
200 if (TimingDelay != 0x00)
\r
206 #ifdef USE_FULL_ASSERT
\r
208 * @brief Reports the name of the source file and the source line number
\r
209 * where the assert_param error has occurred.
\r
210 * @param file: pointer to the source file name
\r
211 * @param line: assert_param error line source number
\r
214 void assert_failed(uint8_t* file, uint32_t line)
\r
216 /* User can add his own implementation to report the file name and line number,
\r
217 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
\r
219 /* Infinite loop */
\r
234 /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
\r