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 | } |