TMS320VC5509的MCBSP配置成SPI模式通信

1. 首先是把MCBSP的配置

其次是时钟停止模式的配置，关闭大同小异

SPI有4中模式，怎么根据上面的寄存器选择哪种模式？下面展示了其中两种，CLKXP=1的时候有另外两种，暂时不整出来了

2. 代码总结如下，需要注意的是不同版本的CSL库，MCBSP_PCR_RMK有点区别，一定要注意哈

#include <csl.h>
#include <csl_i2c.h>
#include <stdio.h>
#include <csl_pll.h>
#include <csl_mcbsp.h>
#include <csl_gpio.h>

//共阳极数码管值
char  table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
/*锁相环的设置*/
PLL_Config  myConfig      = {
  ,    //IAI: the PLL locks using the same process that was underway
                //before the idle mode was entered
  ,    //IOB: If the PLL indicates a break in the phase lock,
                //it switches to its bypass mode and restarts the PLL phase-locking
                //sequence
  ,    //PLL multiply value; multiply 24 times
               //Divide by 2 PLL divide value; it can be either PLL divide value
                //(when PLL is enabled), or Bypass-mode divide value
                //(PLL in bypass mode, if PLL multiply value is set to 1)
};

MCBSP_Config Mcbsptest;

/*McBSP set,we use mcbsp0 to send and recieve the data between DSP and 74HC595*/
MCBSP_Config Mcbsp0Config = {
  MCBSP_SPCR1_RMK(
    MCBSP_SPCR1_DLB_OFF,                   /* DLB    = 0,禁止自闭环方式 */
    MCBSP_SPCR1_RJUST_RZF,                 /* RJUST  = 2 */
    //MCBSP_SPCR1_CLKSTP_DISABLE,            /* CLKSTP = 0 */
    MCBSP_SPCR1_CLKSTP_NODELAY,
    MCBSP_SPCR1_DXENA_NA,                  /* DXENA  = 1 */
    ,                                     /* ABIS   = 0 */
    MCBSP_SPCR1_RINTM_RRDY,                /* RINTM  = 0 */
    ,                                     /* RSYNCER = 0 */
    MCBSP_SPCR1_RRST_DISABLE               /* RRST   = 0 */
   ),
    MCBSP_SPCR2_RMK(
    MCBSP_SPCR2_FREE_NO,                   /* FREE   = 0 */
    MCBSP_SPCR2_SOFT_NO,                   /* SOFT   = 0 */
    MCBSP_SPCR2_FRST_RESET,  //帧同步关闭
    //MCBSP_SPCR2_FRST_FSG,                  /* FRST   = 0 */
    MCBSP_SPCR2_GRST_RESET,                 /* GRST   = 0 */
    MCBSP_SPCR2_XINTM_XRDY,                /* XINTM  = 0 */
    ,                                     /* XSYNCER = N/A */
    MCBSP_SPCR2_XRST_DISABLE               /* XRST   = 0 */
   ),
   /*单数据相，接受数据长度为16位,每相2个数据*/
  MCBSP_RCR1_RMK(
      MCBSP_RCR1_RFRLEN1_OF(),              /* RFRLEN1 = 1 */
      MCBSP_RCR1_RWDLEN1_16BIT               /* RWDLEN1 = 2 */
  ),
  MCBSP_RCR2_RMK(
    MCBSP_RCR2_RPHASE_SINGLE,              /* RPHASE  = 0 */
    MCBSP_RCR2_RFRLEN2_OF(),              /* RFRLEN2 = 0 */
    MCBSP_RCR2_RWDLEN2_8BIT,               /* RWDLEN2 = 0 */
    MCBSP_RCR2_RCOMPAND_MSB,               /* RCOMPAND = 0 */
    MCBSP_RCR2_RFIG_YES,                   /* RFIG    = 0 */
    MCBSP_RCR2_RDATDLY_1BIT                /* RDATDLY = 1 */
    ),
   MCBSP_XCR1_RMK(
    MCBSP_XCR1_XFRLEN1_OF(),              /* XFRLEN1 = 1 */
    MCBSP_XCR1_XWDLEN1_16BIT               /* XWDLEN1 = 2 */

 ),
 MCBSP_XCR2_RMK(
    MCBSP_XCR2_XPHASE_SINGLE,              /* XPHASE  = 0 */
    MCBSP_XCR2_XFRLEN2_OF(),              /* XFRLEN2 = 0 */
    MCBSP_XCR2_XWDLEN2_8BIT,               /* XWDLEN2 = 0 */
    MCBSP_XCR2_XCOMPAND_MSB,               /* XCOMPAND = 0 */
    MCBSP_XCR2_XFIG_YES,                   /* XFIG    = 0 */
    MCBSP_XCR2_XDATDLY_1BIT                /* XDATDLY = 1 */
  ),
  MCBSP_SRGR1_RMK(
     MCBSP_SRGR1_FWID_OF(),                /* 停止模式无效**重要FWID    = 0 帧同步信号的脉宽周期数*/
     MCBSP_SRGR1_CLKGDV_OF()               /* 停止模式无效**重要CLKGDV  =9 CLKG时钟频率*/
  ),
  MCBSP_SRGR2_RMK(
      ,//MCBSP_SRGR2_GSYNC_FREE,                /* FREE    = 0 内部时钟帧同步 */
      MCBSP_SRGR2_CLKSP_RISING,              /* 重要CLKSP   = 0 CLKS 引脚极性*/
      MCBSP_SRGR2_CLKSM_INTERNAL,            /* 重要CLKSM   = 1 cpu时钟*/
      MCBSP_SRGR2_FSGM_DXR2XSR,              /* FSGM    = 0 发送帧同步模式，如果FXSM=1,当DXR->XSR时,McBSP产生帧同步信号*/
      MCBSP_SRGR2_FPER_OF()    /*重要 FPER    = 0 FSG信号帧同步时钟周期数，应该是7*/
  ),
 MCBSP_MCR1_DEFAULT,
 MCBSP_MCR2_DEFAULT,
 MCBSP_PCR_RMK(
   MCBSP_PCR_IDLEEN_RESET,                 /* IDLEEN   = 0   */
   MCBSP_PCR_XIOEN_SP,                     /* XIOEN    = 0   */
   MCBSP_PCR_RIOEN_SP,                     /* RIOEN    = 0   */
   MCBSP_PCR_FSXM_INTERNAL,                /* FSXM     = 0   */
   MCBSP_PCR_FSXM_INTERNAL,                /* FSRM     = 0   */
                                         /* DXSTAT = N/A   */
   MCBSP_PCR_CLKXM_OUTPUT,                  /* CLKXM    = 0   */
   MCBSP_PCR_CLKRM_INPUT,                  /* CLKRM    = 0   */
   MCBSP_PCR_SCLKME_NO,                    /* SCLKME   = 0   */
   ,
   MCBSP_PCR_FSXP_ACTIVELOW,              /* FSXP     = 0   */
   MCBSP_PCR_FSXP_ACTIVELOW,              /* FSRP     = 1   */
   MCBSP_PCR_CLKXP_RISING,                /* CLKXP    = 1   */
   MCBSP_PCR_CLKRP_RISING                  /* CLKRP    = 1   */
 ),
 MCBSP_RCERA_DEFAULT,
 MCBSP_RCERB_DEFAULT,
 MCBSP_RCERC_DEFAULT,
 MCBSP_RCERD_DEFAULT,
 MCBSP_RCERE_DEFAULT,
 MCBSP_RCERF_DEFAULT,
 MCBSP_RCERG_DEFAULT,
 MCBSP_RCERH_DEFAULT,
 MCBSP_XCERA_DEFAULT,
 MCBSP_XCERB_DEFAULT,
 MCBSP_XCERC_DEFAULT,
 MCBSP_XCERD_DEFAULT,
 MCBSP_XCERE_DEFAULT,
 MCBSP_XCERF_DEFAULT,
 MCBSP_XCERG_DEFAULT,
 MCBSP_XCERH_DEFAULT
};

/*定义McBSP的句柄*/
MCBSP_Handle hMcbsp;

Uint16 i2c_status;
Uint16 i,temp;

void delay(Uint32 k)
{
   while(k--);
}

void main(void)
{
    Uint16 shumaguan_value = ;
    /* Initialize CSL library - This is REQUIRED !!! */
    /*初始化CSL库*/
    CSL_init();

    /*设置系统的运行速度为140MHz*/
    PLL_config(&myConfig);
    /*确定方向为输出*/
    GPIO_RSET(IODIR,0xFF);
    GPIO_RSET(IODATA,0xFC);

    /*初始化McBSP0*/

    hMcbsp = MCBSP_open(MCBSP_PORT1,MCBSP_OPEN_RESET);
    /*设置McBSP0*/
    MCBSP_config(hMcbsp,&Mcbsp0Config);

    /*启动McBSP0*/
//    MCBSP_start(hMcbsp,
//                MCBSP_RCV_START | MCBSP_XMIT_START,
//                0);
    MCBSP_start(hMcbsp,
            MCBSP_SRGR_START | MCBSP_XMIT_START | MCBSP_RCV_START,
                );

    //MCBSP_getConfig(hMcbsp,&Mcbsptest);
    delay();

    /*回放音频*/
    while(TRUE)
    {
        for(i=;i<;i++)
        {

          shumaguan_value = table[i] + (table[i] << );
          while(!MCBSP_xrdy(hMcbsp)){};
          MCBSP_write16(hMcbsp,0x0055);
          delay();
//          while(!MCBSP_xrdy(hMcbsp)){};
//          MCBSP_write16(hMcbsp,shumaguan_value);
          delay();
          GPIO_RSET(IODATA,0xFE);
          delay();
          GPIO_RSET(IODATA,0xFC); //使能74HC595片选
          delay();
        }
    }
}

3. 通信波形如下，徐国想改变SPI的频率，修改MCBSP_SRGR1_CLKGDV_OF(11)