ucos_iii_blinky.c

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/*
 * @brief Blinky example
 *
 * uC/OS-III 'blinky' example. Creates several LED blink threads and
 * a UART output thread that ticks at about 1Hz.
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#include "board.h"
#include "os.h"

/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/

static OS_TCB  vLEDTask1TCB, vLEDTask2TCB, vUARTTaskTCB;
static CPU_STK vLEDTask1Stk[APP_CFG_TASK_START_STK_SIZE];
static CPU_STK vLEDTask2Stk[APP_CFG_TASK_START_STK_SIZE];
static CPU_STK vUARTTaskStk[APP_CFG_TASK_START_STK_SIZE];

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

/*****************************************************************************
 * Private functions
 ****************************************************************************/

extern void OS_CSP_TickInit(void);

/* Sets up system hardware */
static void prvSetupHardware(void)
{
 Board_Init();

 /* Initial LED0 state is off */
 Board_LED_Set(0, false);
}

/* LED2 toggle thread */
static void vLEDTask2(void *p_arg)
{
 OS_ERR err;
 bool LedState = true;

 while (1) {
  Board_LED_Set(1, LedState);
  LedState = (bool) !LedState;

  /* About a 7Hz on/off toggle rate */
  OSTimeDlyHMSM(0u, 0u, 0u, 71u, OS_OPT_TIME_HMSM_STRICT, &err);
 }
}

/* UART (or output) thread */
static void vUARTTask(void *p_arg)
{
 OS_ERR err;
 int tickCnt = 0;

 while (1) {
  DEBUGOUT("Tick: %d\r\n", tickCnt);
  tickCnt++;

  /* About a 1s delay here */
    OSTimeDlyHMSM(0u, 0u, 1u, 0u, OS_OPT_TIME_HMSM_STRICT, &err);
 }
}

/* LED1 toggle thread */
static void vLEDTask1(void *p_arg)
{
 OS_ERR os_err;
 bool LedState = true;

 /* Start tick */
 OS_CSP_TickInit();

 /* Other tasks */
 OSTaskCreate(   (OS_TCB      *) &vLEDTask2TCB,
     (CPU_CHAR    *) "vLEDTask2",
     (OS_TASK_PTR) vLEDTask2,
     (void        *) 0,
     (OS_PRIO) APP_CFG_TASK_START_PRIO + 1,
     (CPU_STK     *) vLEDTask2Stk,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE_LIMIT,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE,
     (OS_MSG_QTY) 0u,
     (OS_TICK) 0u,
     (void        *) 0,
     (OS_OPT) (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
     (OS_ERR      *) &os_err);
 OSTaskCreate(   (OS_TCB      *) &vUARTTaskTCB,
     (CPU_CHAR    *) "vUARTTask",
     (OS_TASK_PTR) vUARTTask,
     (void        *) 0,
     (OS_PRIO) APP_CFG_TASK_START_PRIO + 2,
     (CPU_STK     *) vUARTTaskStk,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE_LIMIT,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE,
     (OS_MSG_QTY) 0u,
     (OS_TICK) 0u,
     (void        *) 0,
     (OS_OPT) (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
     (OS_ERR      *) &os_err);

 while (1) {
  Board_LED_Set(0, LedState);
  LedState = (bool) !LedState;

  /* About a 3Hz on/off toggle rate */
  OSTimeDlyHMSM(0u, 0u, 0u, 156u, OS_OPT_TIME_HMSM_STRICT, &os_err);
 }
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/

int main(void)
{
 OS_ERR os_err;

 prvSetupHardware();

 CPU_Init();

 OSInit(&os_err);

 OSTaskCreate(   (OS_TCB      *) &vLEDTask1TCB,
     (CPU_CHAR    *) "vLEDTask1",
     (OS_TASK_PTR) vLEDTask1,
     (void        *) 0,
     (OS_PRIO) APP_CFG_TASK_START_PRIO,
     (CPU_STK     *) vLEDTask1Stk,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE_LIMIT,
     (CPU_STK_SIZE) APP_CFG_TASK_START_STK_SIZE,
     (OS_MSG_QTY) 0u,
     (OS_TICK) 0u,
     (void        *) 0,
     (OS_OPT) (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
     (OS_ERR      *) &os_err);

 OSStart(&os_err);

 (void) &os_err;

 return 0;
}