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freertos_blinky.c
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1 /*
2  * @brief FreeRTOS Blinky example
3  *
4  * @note
5  * Copyright(C) NXP Semiconductors, 2012
6  * All rights reserved.
7  *
8  * @par
9  * Software that is described herein is for illustrative purposes only
10  * which provides customers with programming information regarding the
11  * LPC products. This software is supplied "AS IS" without any warranties of
12  * any kind, and NXP Semiconductors and its licensor disclaim any and
13  * all warranties, express or implied, including all implied warranties of
14  * merchantability, fitness for a particular purpose and non-infringement of
15  * intellectual property rights. NXP Semiconductors assumes no responsibility
16  * or liability for the use of the software, conveys no license or rights under any
17  * patent, copyright, mask work right, or any other intellectual property rights in
18  * or to any products. NXP Semiconductors reserves the right to make changes
19  * in the software without notification. NXP Semiconductors also makes no
20  * representation or warranty that such application will be suitable for the
21  * specified use without further testing or modification.
22  *
23  * @par
24  * Permission to use, copy, modify, and distribute this software and its
25  * documentation is hereby granted, under NXP Semiconductors' and its
26  * licensor's relevant copyrights in the software, without fee, provided that it
27  * is used in conjunction with NXP Semiconductors microcontrollers. This
28  * copyright, permission, and disclaimer notice must appear in all copies of
29  * this code.
30  */
31 
32 #include "board.h"
33 #include "FreeRTOS.h"
34 #include "task.h"
35 
54 /*****************************************************************************
55  * Private types/enumerations/variables
56  ****************************************************************************/
57 
58 /*****************************************************************************
59  * Public types/enumerations/variables
60  ****************************************************************************/
61 
62 /*****************************************************************************
63  * Private functions
64  ****************************************************************************/
65 
66 /* Sets up system hardware */
67 static void prvSetupHardware(void)
68 {
69  Board_Init();
71 
72  /* Initial LED0 state is off */
73  Board_LED_Set(0, false);
74 }
75 
76 /* LED1 toggle thread */
77 static portTASK_FUNCTION(vLEDTask1, pvParameters) {
78  bool LedState = false;
79 
80  while (1) {
81  Board_LED_Set(0, LedState);
82  LedState = (bool) !LedState;
83 
84  /* About a 3Hz on/off toggle rate */
85  vTaskDelay(configTICK_RATE_HZ / 6);
86  }
87 }
88 
89 /* LED2 toggle thread */
90 static portTASK_FUNCTION(vLEDTask2, pvParameters) {
91  bool LedState = false;
92 
93  while (1) {
94  Board_LED_Set(1, LedState);
95  LedState = (bool) !LedState;
96 
97  /* About a 7Hz on/off toggle rate */
98  vTaskDelay(configTICK_RATE_HZ / 14);
99  }
100 }
101 
102 /* UART (or output) thread */
103 static portTASK_FUNCTION(vUARTTask, pvParameters) {
104  int tickCnt = 0;
105 
106  while (1) {
107  DEBUGOUT("Tick: %d\n", tickCnt);
108  tickCnt++;
109 
110  /* About a 1s delay here */
111  vTaskDelay(configTICK_RATE_HZ);
112  }
113 }
114 
115 /*****************************************************************************
116  * Public functions
117  ****************************************************************************/
118 
123 int main(void)
124 {
126 
127  /* LED1 toggle thread */
128  xTaskCreate(vLEDTask1, (signed char *) "vTaskLed1",
129  configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
130  (xTaskHandle *) NULL);
131 
132  /* LED2 toggle thread */
133  xTaskCreate(vLEDTask2, (signed char *) "vTaskLed2",
134  configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
135  (xTaskHandle *) NULL);
136 
137  /* UART output thread, simply counts seconds */
138  xTaskCreate(vUARTTask, (signed char *) "vTaskUart",
139  configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
140  (xTaskHandle *) NULL);
141 
142  /* Start the scheduler */
143  vTaskStartScheduler();
144 
145  /* Should never arrive here */
146  return 1;
147 }
148