新唐NuMicro_M051+小嵌操作系统AIOS例程

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AIOS(Advanced Input Output System) - An Embedded Real Time Operating System (RTOS)

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#include <stdio.h>

#include "M051Series.h"

//AIOS

#include "AIOS.h"



#define PLLCON_SETTING  CLK_PLLCON_50MHz_HXT

#define PLL_CLOCK       50000000



OSTimerHandle_t                        Timer500msHandle        = NULL;

OSTaskHandle_t                         CtrlTaskHandle                = NULL;

OSTaskHandle_t                         LedTaskHandle                = NULL;

OSSemHandle_t                         LedSemHandle                = NULL;



void CtrlTask( void *pvParameters );

void LedTask( void *pvParameters );

void Timer500ms( void *pvParameters );





void SYS_Init(void)

{

        /*---------------------------------------------------------------------------------------------------------*/

        /* Init System Clock                                                                                       */

        /*---------------------------------------------------------------------------------------------------------*/



        /* Enable Internal RC 22.1184MHz clock */

        CLK->PWRCON |= CLK_PWRCON_OSC22M_EN_Msk;



        /* Waiting for Internal RC clock ready */

        while(!(CLK->CLKSTATUS & CLK_CLKSTATUS_OSC22M_STB_Msk));



        /* Switch HCLK clock source to Internal RC and and HCLK source divide 1 */

        CLK->CLKSEL0 &= ~CLK_CLKSEL0_HCLK_S_Msk;

        CLK->CLKSEL0 |= CLK_CLKSEL0_HCLK_S_HIRC;

        CLK->CLKDIV &= ~CLK_CLKDIV_HCLK_N_Msk;

        CLK->CLKDIV |= CLK_CLKDIV_HCLK(1);



        /* Enable external XTAL 12MHz clock */

        CLK->PWRCON |= CLK_PWRCON_XTL12M_EN_Msk;



        /* Waiting for external XTAL clock ready */

        while(!(CLK->CLKSTATUS & CLK_CLKSTATUS_XTL12M_STB_Msk));



        /* Set core clock as PLL_CLOCK from PLL */

        CLK->PLLCON = PLLCON_SETTING;

        while(!(CLK->CLKSTATUS & CLK_CLKSTATUS_PLL_STB_Msk));

        CLK->CLKSEL0 &= (~CLK_CLKSEL0_HCLK_S_Msk);

        CLK->CLKSEL0 |= CLK_CLKSEL0_HCLK_S_PLL;



        /* Update System Core Clock */

        /* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */

        //SystemCoreClockUpdate();

        PllClock        = PLL_CLOCK;            // PLL

        SystemCoreClock = PLL_CLOCK / 1;        // HCLK

        CyclesPerUs     = PLL_CLOCK / 1000000;  // For SYS_SysTickDelay()



        /* Enable UART module clock */

        CLK->APBCLK |= CLK_APBCLK_UART0_EN_Msk;



        /* Select UART module clock source */

        CLK->CLKSEL1 &= ~CLK_CLKSEL1_UART_S_Msk;

        CLK->CLKSEL1 |= CLK_CLKSEL1_UART_S_HXT;



        /*---------------------------------------------------------------------------------------------------------*/

        /* Init I/O Multi-function                                                                                 */

        /*---------------------------------------------------------------------------------------------------------*/



        /* Set P3 multi-function pins for UART0 RXD , TXD and CKO */

        SYS->P3_MFP &= ~(SYS_MFP_P30_Msk | SYS_MFP_P31_Msk);

        SYS->P3_MFP |= (SYS_MFP_P30_RXD0 | SYS_MFP_P31_TXD0);

}



void UART0_Init()

{

        /*---------------------------------------------------------------------------------------------------------*/

        /* Init UART                                                                                               */

        /*---------------------------------------------------------------------------------------------------------*/

        /* Reset UART0 */

        SYS->IPRSTC2 |=  SYS_IPRSTC2_UART0_RST_Msk;

        SYS->IPRSTC2 &= ~SYS_IPRSTC2_UART0_RST_Msk;



        /* Configure UART0 and set UART0 Baudrate */

        UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 115200);

        UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;

}



static void SetupHardware(void)

{

        /* Unlock protected registers */

        SYS_UnlockReg();



        /* Init System, peripheral clock and multi-function I/O */

        SYS_Init();



        /* Lock protected registers */

        SYS_LockReg();



        /* Init UART0 for printf */

        UART0_Init();



        printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);



        /*

                This sample code will blinking LED on NuTiny EVB board of M058SSAN.

                The I/O for LED is P2.3 or P3.6

        */



        printf("+---------------------------------------+\n");

        printf("|    NuTiny EVB LED Sample Code         |\n");

        printf("+---------------------------------------+\n");



        /* Init P2.3 and P3.6 to be output mode */

        P2->PMD = (P2->PMD & ~(0x3 << 2*3)) | (1 << 2*3);

        P3->PMD = (P3->PMD & ~(0x3 << 2*6)) | (1 << 2*6);  

}



/*---------------------------------------------------------------------------------------------------------*/

/*  Main Function                                                                                          */

/*---------------------------------------------------------------------------------------------------------*/

int32_t main(void)

{

        SetupHardware();



        //创建500ms的定时器，分配定时器服务函数为Timer500ms

        Timer500msHandle = OSTimerCreate(OSM2T(500), OS_TRUE, Timer500ms, NULL, "T500ms");

        //创建信号量

        LedSemHandle        = OSSemCreate(0);

        //创建任务，控制LED灯

        CtrlTaskHandle        = OSTaskCreate(CtrlTask, NULL, OSMINIMAL_STACK_SIZE, OSLOWEAST_PRIORITY+1, "Ctrl" );

        LedTaskHandle        = OSTaskCreate(LedTask, NULL, OSMINIMAL_STACK_SIZE, OSLOWEAST_PRIORITY+1, "Led" );



        OSTimerStart(Timer500msHandle);



        // Start the scheduler. 

        OSStart();

                

        //if everything is ok, can't reach here

        for( ;; );  

}



void CtrlTask( void *pvParameters )

{

        for( ;; )

        {

                OSSemPost(LedSemHandle);        



                OSTaskSleep( OSM2T(500) );        

        }

}



void LedTask( void *pvParameters )

{

        for( ;; )

        {

                OSSemPend(LedSemHandle, OSPEND_FOREVER_VALUE);        

                /* Toggle P2.3 */

                P23 ^= 1;



                /* Toggle P3.6 */

                P36 ^= 1;                

        }

}



void Timer500ms( void *pvParameters )

{

        // 500ms软件定时器. 

}