main.c

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/*
 * @brief Startup/Main file for Dual core demos
 *
 * Startup file (having reset and main routines)
 * This file provides functions necessary to start all the example tasks
 * based on the configuration.
 *
 * @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.
 */

/* General includes */
#include <stdio.h>
#include "lpc43xx_dualcore_config.h"
#include "ipc_msg.h"

#if defined(OS_FREE_RTOS)
#include "FreeRTOS.h"
#include "task.h"

#elif defined(OS_UCOS_III)
#include "os.h"
#endif

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

/* Macro that calculates the start address of M0 image */
#define M0_IMAGE_ADDR  (IMAGE_BASE_ADDR + M0_IMAGE_OFFSET)

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

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

#ifdef OS_UCOS_III
/* UCOS-III Idle task hook */
static void APP_Task_Idle_Hook(void)
{
 __WFI();
}
#endif

/* initialization routine for dual core examples */
static void prvSetupHardware(void)
{
#ifdef CORE_M4
 /* Re-initialize CGU for proper operation */
 Board_Init();

 /* Time to Start M0 */
 if (M0Image_Boot((uint32_t) M0_IMAGE_ADDR) < 0) {
  while (1) {
   __WFI();
  }
 }
 MSleep(100);
#elif defined(CORE_M0)
 extern void prvSetupTimerInterrupt(void);

 /* Needs to be called coz durinig initializtion the
  * global variable would have initialized to 0
  */
 SystemCoreClockUpdate();

 #ifdef OS_FREE_RTOS
 /* Disable global interrupts */
 taskDISABLE_INTERRUPTS();
 prvSetupTimerInterrupt();
 #endif
#endif
#ifdef OS_UCOS_III
 do {
  extern void OS_CSP_TickInit(void);
  OS_ERR ret;
  
  CPU_IntDis();
  CPU_Init();
  OSInit(&ret);
  if (ret != OS_ERR_NONE) {
   DEBUGSTR("Unable init UCOS-III OS!\r\n");
   while (1) {}
  }
  OS_CSP_TickInit();
  OS_AppIdleTaskHookPtr = APP_Task_Idle_Hook;
 } while(0);
#endif
 /* Initialize the IPC Queue */
 IPCEX_Init();

 #ifdef EXAMPLE_USB_HOST
 USBHOST_Init();
 #endif
 #ifdef EXAMPLE_USB_DEVICE
 USBDEV_Init();
 #endif
 #ifdef EXAMPLE_LWIP
 LWIP_Init();
 #endif
 #ifdef EXAMPLE_EMWIN
 EMWIN_Init();
 #endif
 #ifdef EXAMPLE_BLINKY
 BLINKY_Init();
 #endif
}

/* Main tasks of LPC43xx Dual core examples */
static void main_tasks(void)
{
#if (defined(OS_FREE_RTOS) || defined(OS_UCOS_III))
 const int loop = 0;
#else
 const int loop = 1;
#endif

 do {
  ipcex_tasks();
#ifdef EXAMPLE_BLINKY
  blinky_tasks();
#endif
#ifdef EXAMPLE_USB_HOST
  usb_host_tasks();
#endif
#ifdef EXAMPLE_USB_DEVICE
  usb_device_tasks();
#endif
#ifdef EXAMPLE_LWIP
  lwip_tasks();
#endif
#ifdef EXAMPLE_EMWIN
  emwin_tasks();
#endif
 } while (loop);

#ifdef OS_FREE_RTOS
 /* Start the scheduler */
 vTaskStartScheduler();
#endif

#ifdef OS_UCOS_III
 do {
  OS_ERR ret;
  OSStart(&ret);
  if (ret != OS_ERR_NONE) {
   DEBUGSTR("Unable start UCOS-III OS!\r\n");
   while (1) {}
  }
 } while(0);
#endif

 /* Control should never come here */
 DEBUGSTR("Schedule Failure\r\n");
 while (1) {}
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/
/* Milli-second sleep function */
void MSleep(int32_t msecs)
{
 int32_t curr = (int32_t) Chip_RIT_GetCounter(LPC_RITIMER);
 int32_t final = curr + ((SystemCoreClock / 1000) * msecs);

 /* If the value is zero let us not worry about it */
 if (!msecs || (msecs < 0)) {
  return;
 }

 if ((final < 0) && (curr > 0)) {
  while (Chip_RIT_GetCounter(LPC_RITIMER) < (uint32_t) final) {}
 }
 else {
  while ((int32_t) Chip_RIT_GetCounter(LPC_RITIMER) < final) {}
 }
}

int main(void)
{
 prvSetupHardware();
#ifdef CORE_M0
 DEBUGSTR("Starting M0 Tasks...\r\n");
#else
 DEBUGSTR("Starting M4 Tasks...\r\n");
#endif
 main_tasks();
 return 0;
}