SHOW:
|
|
- or go back to the newest paste.
| 1 | /* Includes */ | |
| 2 | #include "stm32f4xx.h" | |
| 3 | #include "stm32f4_discovery.h" | |
| 4 | #include "FreeRTOS.h" | |
| 5 | #include "task.h" | |
| 6 | #include "semphr.h" | |
| 7 | ||
| 8 | xSemaphoreHandle xBinarySemaphore; | |
| 9 | xTaskHandle xBlinkLed; | |
| 10 | xTaskHandle xBlinkLed1; | |
| 11 | ||
| 12 | static void vBlinkLed1(void *pvParameters); | |
| 13 | static void vEXTI0_IRQHandler(void *pvParameters); | |
| 14 | static void vBlinkLed( void *pvParameters ); | |
| 15 | ||
| 16 | int main(void) | |
| 17 | {
| |
| 18 | ||
| 19 | /* Initialize LEDs */ | |
| 20 | STM_EVAL_LEDInit(LED3); | |
| 21 | STM_EVAL_LEDInit(LED4); | |
| 22 | STM_EVAL_LEDInit(LED5); | |
| 23 | STM_EVAL_LEDInit(LED6); | |
| 24 | ||
| 25 | STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_EXTI); | |
| 26 | ||
| 27 | vSemaphoreCreateBinary( xBinarySemaphore ); | |
| 28 | xSemaphoreTake( xBinarySemaphore, portMAX_DELAY); | |
| 29 | ||
| 30 | if( xBinarySemaphore != NULL ) | |
| 31 | {
| |
| 32 | xTaskCreate( vBlinkLed, ( signed char * ) "vBlinkLed", configMINIMAL_STACK_SIZE, NULL, 4, &xBlinkLed ); | |
| 33 | xTaskCreate( vEXTI0_IRQHandler, ( signed char * ) "vEXTI0_IRQHandler", configMINIMAL_STACK_SIZE, NULL, 4, NULL ); | |
| 34 | vTaskStartScheduler(); | |
| 35 | } | |
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| 39 | void vBlinkLed1(void *pvParameters) {
| |
| 40 | unsigned short i = 0; | |
| 41 | struct smb380_acc_t acc; | |
| 42 | portTickType xLastWakeTime; | |
| 43 | xLastWakeTime = xTaskGetTickCount(); | |
| 44 | for (;;) {
| |
| 45 | STM_EVAL_LEDOn(LED3); | |
| 46 | vTaskDelayUntil( &xLastWakeTime, ( 100 / portTICK_RATE_MS ) ); | |
| 47 | STM_EVAL_LEDOff(LED3); | |
| 48 | } | |
| 49 | } | |
| 50 | ||
| 51 | void vBlinkLed( void *pvParameters ) | |
| 52 | {
| |
| 53 | for(;;) | |
| 54 | {
| |
| 55 | STM_EVAL_LEDToggle(LED3); | |
| 56 | STM_EVAL_LEDToggle(LED4); | |
| 57 | STM_EVAL_LEDToggle(LED5); | |
| 58 | STM_EVAL_LEDToggle(LED6); | |
| 59 | vTaskDelay(1000 / portTICK_RATE_MS); | |
| 60 | } | |
| 61 | } | |
| 62 | ||
| 63 | void vEXTI0_IRQHandler( void *pvParameters ) | |
| 64 | {
| |
| 65 | static int cr = 0; | |
| 66 | for ( ;; ) | |
| 67 | {
| |
| 68 | xSemaphoreTake( xBinarySemaphore, portMAX_DELAY ); | |
| 69 | {
| |
| 70 | STM_EVAL_LEDOff(LED3); | |
| 71 | STM_EVAL_LEDOff(LED4); | |
| 72 | STM_EVAL_LEDOff(LED5); | |
| 73 | STM_EVAL_LEDOff(LED6); | |
| 74 | if (cr == 0) | |
| 75 | {
| |
| 76 | vTaskDelete(xBlinkLed); | |
| 77 | xTaskCreate( vBlinkLed1, ( signed char * ) "vBlinkLed1", configMINIMAL_STACK_SIZE, NULL, 4, &xBlinkLed1); | |
| 78 | cr = 1; | |
| 79 | } | |
| 80 | else | |
| 81 | {
| |
| 82 | xTaskCreate( vBlinkLed, ( signed char * ) "vBlinkLed", configMINIMAL_STACK_SIZE, NULL, 4, &xBlinkLed ); | |
| 83 | vTaskDelete(xBlinkLed1); | |
| 84 | cr = 0; | |
| 85 | } | |
| 86 | } | |
| 87 | } | |
| 88 | } | |
| 89 | ||
| 90 | void EXTI0_IRQHandler(void) | |
| 91 | {
| |
| 92 | if(EXTI_GetITStatus(EXTI_Line0) != RESET) | |
| 93 | {
| |
| 94 | static portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE; | |
| 95 | EXTI_ClearITPendingBit(EXTI_Line0); | |
| 96 | xHigherPriorityTaskWoken = pdFALSE; | |
| 97 | xSemaphoreGiveFromISR( xBinarySemaphore, &xHigherPriorityTaskWoken ); | |
| 98 | portEND_SWITCHING_ISR(xHigherPriorityTaskWoken); | |
| 99 | } | |
| 100 | } |
