DSP 之看门狗定时器(WDTIM)和主机设备接口(HPI)

DSP 之看门狗定时器(WDTIM)和主机设备接口(HPI)

        看门狗定时器(WDTIM):

/* * Copyright (C) 2003 Texas Instruments Incorporated * All Rights Reserved */#include <csl.h>#include <csl_wdtim.h> #include <stdio.h>int i, pscVal;WDTIM_Config getConfig;/* Structure used to configure a WDTIM device */WDTIM_Config myConfig = {     0x1000,          /* WDPRD Period register(周期寄存器) */     0x0000,          /* WDTCR Control register(控制寄存器) */     0x1000           /* WDTCR2 Secondary register(辅助寄存器) */};void main(void){/* Initialize CSL Libary */    CSL_init();    printf ("\nTESTING...\n");    /* Configures WDTIM using configuration structure */    WDTIM_config(&myConfig);        /* Macros to write WDTIM register field values */    WDTIM_FSET(WDTCR, WDOUT, 1);/* Connect to NMI */    WDTIM_FSET(WDTCR, TDDR, 0xF);/* Value to load PSC field */        WDTIM_FSET(WDTCR2, PREMD, 0);/* Set direct mode */        /* Executes the watchdog service sequence */    WDTIM_service();/* enable watchdog */               while(1)    {       /* Gets the WDYIM configuration structure for a specified device */                          WDTIM_getConfig(&getConfig);                  /* Macros to read WDTIM register field value */        pscVal = WDTIM_FGET(WDTCR,PSC);        printf("pscVal: %x, wdtcr: %x\n", pscVal, getConfig.wdtcr);                           /* write periodically to WDTIMER  - when this line is commented out,           the watchdog times out, WDFLAG set to 1, indicating            that a Watchdog time-out occurred.*/                    WDTIM_service();             }           }

主机设备接口(HPI):

/*-------------------------------------------------------------------------- * Project: HPI.c * Name: zwp * Date: 2014.2 *-------------------------------------------------------------------------*/    #include <csl.h>#include <csl_hpi.h>#include <csl_dma.h>ioport Uint16* hpi_ctl;HPI_Config myconfig;DMA_Handle hDma;/* 主机接口设置 */HPI_Config myConfig = {0x3,/* HPWREMU, Select FREE = SOFT = 1 */0x0,/* HGPIOEN, Disable all GPIO pins*/0x80,/* HPIC,Reset HPI*/};int main(void){ Uint16 myregval; Uint16 myvar; /*初始化CSL库*/    CSL_init();        /* Writes to HPI register using values in configuration structure */    HPI_config(&myConfig);        /* Reads current HPI configuration */    HPI_getConfig(&myconfig);        /* gets the address of an HPI register */    hpi_ctl = HPI_ADDR(HPIC);    printf("HPI register's address = %d\n", hpi_ctl);       /* enable HA[0:7], HD[8:15], HD[0:7] for GPIO */myregval = HPI_HGPIOEN_RMK (0,1,1,1,0,0,0,0,0);/* set HPI register value */HPI_RSET(HPIC, 1);/* get HPI register value */myval = HPI_RGET(HPIC);        return 0;        }