?? app.c
字號(hào):
/*
*********************************************************************************************************
* EXAMPLE CODE
*
* (c) Copyright 2003-2006; Micrium, Inc.; Weston, FL
*
* All rights reserved. Protected by international copyright laws.
* Knowledge of the source code may NOT be used to develop a similar product.
* Please help us continue to provide the Embedded community with the finest
* software available. Your honesty is greatly appreciated.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
*
* EXAMPLE CODE
*
* NXP LPC2138
* on the
* IAR LPC2138-SK Evaluation Board
*
* Filename : app.c
* Version : V1.00
* Programmer(s) : JJL
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* INCLUDE FILES
*********************************************************************************************************
*/
#include <includes.h>
/*
*********************************************************************************************************
* LOCAL DEFINES
*********************************************************************************************************
*/
#define APP_USERIF_STATE_MAX 5
/*
*********************************************************************************************************
* LOCAL GLOBAL VARIABLES
*********************************************************************************************************
*/
/* ----------------- APPLICATION GLOBALS ------------------ */
static OS_STK AppTaskStartStk[APP_TASK_START_STK_SIZE];
#if (uC_LCD_MODULE > 0)
static OS_STK AppTaskUserIFStk[APP_TASK_USER_IF_STK_SIZE];
static OS_STK AppTaskKbdStk[APP_TASK_KBD_STK_SIZE];
static OS_EVENT *AppUserIF_Mbox;
static CPU_CHAR AppUserIFLine1[17];
static CPU_CHAR AppUserIFLine2[17];
static CPU_INT32U AppB1Counts;
static CPU_INT32U AppB2Counts;
static CPU_INT16U AppADC;
#endif
/*
*********************************************************************************************************
* LOCAL FUNCTION PROTOTYPES
*********************************************************************************************************
*/
static void AppTaskStart (void *p_arg);
static void AppTaskCreate (void);
#if (uC_LCD_MODULE > 0)
static void AppTaskUserIF (void *p_arg);
static void AppTaskKbd (void *p_arg);
static void AppDispScr_SignOn (void);
static void AppDispScr_VersionTickRate(void);
static void AppDispScr_CPU (void);
static void AppDispScr_CtxSw (void);
static void AppDispScr_Inputs (void);
#endif
#if (OS_VIEW_MODULE > 0)
static void AppTerminalRx (CPU_INT08U rx_data);
#endif
static void AppFormatDec (CPU_INT08U *s,
CPU_INT32U value,
CPU_INT08U digits);
/*
*********************************************************************************************************
* LOCAL CONFIGURATION ERRORS
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* main()
*
* Description : This is the standard entry point for C code. It is assumed that your code will call
* main() once you have performed all necessary initialization.
*
* Argument(s) : none.
*
* Return(s) : none.
*********************************************************************************************************
*/
void main (void)
{
CPU_INT08U err;
BSP_IntDisAll(); /* Disable all interrupts until we are ready to accept them */
OSInit(); /* Initialize "uC/OS-II, The Real-Time Kernel" */
OSTaskCreateExt(AppTaskStart, /* Create the start task */
(void *)0,
(OS_STK *)&AppTaskStartStk[APP_TASK_START_STK_SIZE - 1],
APP_TASK_START_PRIO,
APP_TASK_START_PRIO,
(OS_STK *)&AppTaskStartStk[0],
APP_TASK_START_STK_SIZE,
(void *)0,
OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
#if (OS_TASK_NAME_SIZE > 11)
OSTaskNameSet(APP_TASK_START_PRIO, "Start Task", &err);
#endif
OSStart(); /* Start multitasking (i.e. give control to uC/OS-II) */
}
/*
*********************************************************************************************************
* AppTaskStart()
*
* Description : The startup task. The uC/OS-II ticker should only be initialize once multitasking starts.
*
* Argument(s) : p_arg Argument passed to 'AppTaskStart()' by 'OSTaskCreate()'.
*
* Return(s) : none.
*
* Note(s) : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
* used. The compiler should not generate any code for this statement.
*
* (2) Interrupts are enabled once the task starts because the I-bit of the CCR register was
* set to 0 by 'OSTaskCreate()'.
*********************************************************************************************************
*/
static void AppTaskStart (void *p_arg)
{
(void)p_arg;
BSP_Init(); /* Initialize BSP functions */
#if (OS_TASK_STAT_EN > 0)
OSStatInit(); /* Determine CPU capacity */
#endif
#if (OS_VIEW_MODULE > 0)
OSView_Init(38400); /* OSView Init, baud rate = 38400 */
OSView_TerminalRxSetCallback(AppTerminalRx);
OSView_RxIntEn(); /* Enable Rx Interrupts */
#endif
LED_Off(0); /* Turn OFF all the LEDs */
#if (uC_LCD_MODULE > 0)
AppUserIF_Mbox = OSMboxCreate((void *)0); /* Create MBOX for communication between Kbd and UserIF */
#endif
AppTaskCreate(); /* Create application tasks */
while (DEF_TRUE) { /* Task body, always written as an infinite loop. */
OSTimeDlyHMSM(0, 0, 1, 0);
AppADC = ADC_GetStatus(1);
}
}
/*
*********************************************************************************************************
* AppTaskCreate()
*
* Description : Create the application tasks.
*
* Argument(s) : none.
*
* Return(s) : none.
*********************************************************************************************************
*/
static void AppTaskCreate (void)
{
CPU_INT08U err;
#if (uC_LCD_MODULE > 0)
OSTaskCreateExt(AppTaskUserIF,
(void *)0,
(OS_STK *)&AppTaskUserIFStk[APP_TASK_USER_IF_STK_SIZE - 1],
APP_TASK_USER_IF_PRIO,
APP_TASK_USER_IF_PRIO,
(OS_STK *)&AppTaskUserIFStk[0],
APP_TASK_USER_IF_STK_SIZE,
(void *)0,
OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
#if (OS_TASK_NAME_SIZE > 9)
OSTaskNameSet(APP_TASK_USER_IF_PRIO, "User I/F", &err);
#endif
OSTaskCreateExt(AppTaskKbd,
(void *)0,
(OS_STK *)&AppTaskKbdStk[APP_TASK_KBD_STK_SIZE - 1],
APP_TASK_KBD_PRIO,
APP_TASK_KBD_PRIO,
(OS_STK *)&AppTaskKbdStk[0],
APP_TASK_KBD_STK_SIZE,
(void *)0,
OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
#if (OS_TASK_NAME_SIZE > 9)
OSTaskNameSet(APP_TASK_KBD_PRIO, "Keyboard", &err);
#endif
#endif
}
/*
*********************************************************************************************************
* AppTaskKbd()
*
* Description : Monitor the state of the push buttons and passes messages to AppTaskUserIF()
*
* Argument(s) : p_arg Argument passed to 'AppTaskKbd()' by 'OSTaskCreate()'.
*
* Return(s) : none.
*
* Note(s) : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
* used. The compiler should not generate any code for this statement.
*********************************************************************************************************
*/
#if (uC_LCD_MODULE > 0)
static void AppTaskKbd (void *p_arg)
{
CPU_BOOLEAN b1; /* State of Push Button #1 */
CPU_BOOLEAN b1_prev;
CPU_BOOLEAN b2; /* State of Push Button #2 */
CPU_BOOLEAN b2_prev;
CPU_INT08U key;
(void)p_arg;
key = 1;
b1_prev = DEF_FALSE;
b2_prev = DEF_FALSE;
while (DEF_TRUE) {
b1 = PB_GetStatus(1);
b2 = PB_GetStatus(2);
if (b1 == DEF_TRUE && b1_prev == DEF_FALSE) {
AppB1Counts++;
if (key == APP_USERIF_STATE_MAX) {
key = 1;
} else {
key++;
}
OSMboxPost(AppUserIF_Mbox, (void *)key);
}
if (b2 == DEF_TRUE && b2_prev == DEF_FALSE) {
AppB2Counts++;
LED_Toggle(1);
}
b1_prev = b1;
b2_prev = b2;
OSTimeDlyHMSM(0, 0, 0, 50);
}
}
#endif
/*
*********************************************************************************************************
* AppTaskUserIF()
*
* Description : Updates LCD.
*
* Argument(s) : p_arg Argument passed to 'AppTaskUserIF()' by 'OSTaskCreate()'.
*
* Return(s) : none.
*
* Note(s) : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
* used. The compiler should not generate any code for this statement.
*********************************************************************************************************
*/
#if (uC_LCD_MODULE > 0)
static void AppTaskUserIF (void *p_arg)
{
CPU_INT32U pstate;
CPU_INT32U nstate;
CPU_INT08U *msg;
CPU_INT08U err;
(void)p_arg;
DispInit(2, 16); /* Initialize the LCD module */
LED_On(1); /* Turn ON the LCD Backlight */
AppDispScr_SignOn(); /* Display 'sign on' message */
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