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"

// FIXME - needs standards formatting

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];
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);
 }
}

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;
}