/* Include files */
#include <stdio.h>
#include <csl.h>
#include <csl_mcbsp.h>
#include <csl_irq.h>
/* Create buffers and aligning them on an L2 cache line boundary. */
#pragma DATA_SECTION(xmitbuf,"xmit_buf");
unsigned short xmitbuf[0x0400];
#pragma DATA_SECTION(recvbuf,"recv_buf");
unsigned short recvbuf[0x0400];
/* Declare CSL objects */
MCBSP_Handle hMcbsp1; /* handle for McBSP1 */
#define BUFFER_SIZE 27 /* total number of UART data words */
/* Global Variables */
//char xmit_msg[BUFFER_SIZE] = "McBSP does UART on C5000!\n";
char xmit_msg[BUFFER_SIZE] = "McBSP does UART on PPPPPP\n";
char recv_msg[BUFFER_SIZE] = "Transmission didn't work!\n";
/* Get referenc to start of interrupt vector table */
/* This symbol is defined in file, vectors.s54 */
extern void VECSTART(void);
/* Prototypes */
void ConfigMcBSP(void);
void ProcessTransmitData();
void ProcessReceiveData();
int CheckTestCase(void);
short VoteLogic(unsigned short value);
void cfg_real_mcbsp(MCBSP_Handle mhMcbsp) {
double START_BITS, DATA_BITS,PARITY_BITS,STOP_BITS,BAUD_RATE,DSPCLK,SAMPLES_BITS,PKTBITS,RxPKTBITS,DIV_MAX,DIV_MIN;
Uint16 DIV;
MCBSP_Config mcbsp_cfg = {
MCBSP_SPCR1_DEFAULT,
MCBSP_SPCR2_DEFAULT,
MCBSP_RCR1_DEFAULT,
MCBSP_RCR2_DEFAULT,
MCBSP_XCR1_DEFAULT,
MCBSP_XCR2_DEFAULT,
MCBSP_SRGR1_DEFAULT,
MCBSP_SRGR2_DEFAULT,
MCBSP_MCR1_DEFAULT,
MCBSP_MCR2_DEFAULT,
MCBSP_PCR_DEFAULT,
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
};
START_BITS=1;
DATA_BITS=8;
PARITY_BITS=0;
STOP_BITS=1;
BAUD_RATE=9600;
DSPCLK=1000000*12;
SAMPLES_BITS=16;
PKTBITS=START_BITS+DATA_BITS+PARITY_BITS+STOP_BITS;
RxPKTBITS=START_BITS+DATA_BITS+PARITY_BITS+0.5;
DIV_MAX=(PKTBITS*DSPCLK)/(BAUD_RATE*(SAMPLES_BITS*RxPKTBITS+3));
DIV_MIN=(PKTBITS-STOP_BITS)*DSPCLK/(BAUD_RATE*(SAMPLES_BITS*RxPKTBITS-3));
DIV=(DIV_MAX+DIV_MIN)/2;
printf("DIV=%d\n",DIV);
if(DIV <1 || DIV > 254) {
printf("DIV is out of boundary\n");
}
mcbsp_cfg.spcr1 = MCBSP_SPCR1_RMK(//clear
MCBSP_SPCR1_DLB_OFF, /* DLB = 0 */
MCBSP_SPCR1_RJUST_RZF, /* RJUST = 0 */
MCBSP_SPCR1_CLKSTP_DISABLE, /* CLKSTP = 0 clock stop mode bit*/
MCBSP_SPCR1_DXENA_NA, /* DXENA = 0 Dx delay enabler*/
MCBSP_SPCR1_ABIS_DISABLE, /* ABIS = 0 */
MCBSP_SPCR1_RINTM_RRDY, /* RINTM = 0 Rx interrupt mode bit*/
0, /* RSYNCER = 0 Rx frame sync error*/
MCBSP_SPCR1_RRST_DISABLE /* RRST = 0 receiver reset bit*/
);
mcbsp_cfg.spcr2 = MCBSP_SPCR2_RMK(//clear
MCBSP_SPCR2_FREE_NO, /* FREE = 0 仿真调试时的行为*/
MCBSP_SPCR2_SOFT_YES, /* SOFT = 0 同上*/
MCBSP_SPCR2_FRST_FSG, /* FRST = 0 可以reset帧同步*/
MCBSP_SPCR2_GRST_CLKG, /* GRST = 0 可以reset采样速率产生器*/
MCBSP_SPCR2_XINTM_XRDY, /* XINTM = 0 传输中断信号的模式*/
0, /* XSYNCER = N/A Tx frame sync error*/
MCBSP_SPCR2_XRST_DISABLE /* XRST = 0 可以reset传输*/
);
mcbsp_cfg.rcr1 = MCBSP_RCR1_RMK( //???
MCBSP_RCR1_RFRLEN1_OF(8), /* RFRLEN1 = 0 第一相多少字*/
MCBSP_RCR1_RWDLEN1_16BIT /* RWDLEN1 = 0 第一相每字多少bit*/
);
mcbsp_cfg.rcr2 = MCBSP_RCR2_RMK(
MCBSP_RCR2_RPHASE_DUAL, /* RPHASE = 0 一帧几个相*/
MCBSP_RCR2_RFRLEN2_OF(0), /* RFRLEN2 = 0 第2相多少字*/
MCBSP_RCR2_RWDLEN2_8BIT, /* RWDLEN2 = 0 第2相每字几个bit*/
MCBSP_RCR2_RCOMPAND_MSB, /* RCOMPAND = 0 先收高位还是低位*/
MCBSP_RCR2_RFIG_NO, /* RFIG = 1 收到帧同步之后收帧时忽略其他帧同步*/
MCBSP_RCR2_RDATDLY_1BIT /* RDATDLY = 0 收信号的延迟*/
);
mcbsp_cfg.xcr1 = MCBSP_XCR1_RMK(//clear
MCBSP_XCR1_XFRLEN1_OF(8), /* XFRLEN1 = 0 */
MCBSP_XCR1_XWDLEN1_16BIT /* XWDLEN1 = 0 */
);
mcbsp_cfg.xcr2 = MCBSP_XCR2_RMK(
MCBSP_XCR2_XPHASE_DUAL, /* XPHASE = 1 */
MCBSP_XCR2_XFRLEN2_OF(1), /* XFRLEN2 = 0 */
MCBSP_XCR2_XWDLEN2_8BIT, /* XWDLEN2 = 0 */
MCBSP_XCR2_XCOMPAND_MSB, /* XCOMPAND = 0 */
MCBSP_XCR2_XFIG_NO, /* XFIG = 1 */
MCBSP_XCR2_XDATDLY_0BIT /* XDATDLY = 0 ???*/
);
mcbsp_cfg.srgr1 = MCBSP_SRGR1_RMK( //???
MCBSP_SRGR1_FWID_OF(0), /* FWID = 0 和FPER配合定义帧同步脉冲的宽度*/
MCBSP_SRGR1_CLKGDV_OF(DIV) /* CLKGDV = 1 时钟降频因子*/
);
mcbsp_cfg.srgr2 = MCBSP_SRGR2_RMK(
MCBSP_SRGR2_GSYNC_FREE, /* FREE = 0 有无时钟同步*/
MCBSP_SRGR2_CLKSP_RISING, /* CLKSP = 0 时钟上沿还是下沿同步*/
MCBSP_SRGR2_CLKSM_INTERNAL, /* CLKSM = 1 选时钟源的*/
MCBSP_SRGR2_FSGM_DXR2XSR, /* FSGM = 0 帧同步模式*/
MCBSP_SRGR2_FPER_OF(0) /* FPER = 0 和FWID配合定义帧同步宽度*/
);
mcbsp_cfg.pcr = MCBSP_PCR_RMK(//clear
MCBSP_PCR_IDLEEN_RESET, /*IDLEN =0 省电用*/
MCBSP_PCR_XIOEN_SP, /* XIOEN = 0 GPIO模式用*/
MCBSP_PCR_RIOEN_SP, /* RIOEN = 0 GPIO模式用*/
MCBSP_PCR_FSXM_INTERNAL, /* FSXM = 1 发送帧同步信号模式*/
MCBSP_PCR_FSRM_EXTERNAL, /* FSRM = 0 接收帧同步信号模式*/
MCBSP_PCR_CLKXM_OUTPUT, /* CLKXM = 1 发送数据的时钟模式*/
MCBSP_PCR_CLKRM_OUTPUT, /* CLKRM = 1 接收数据的时钟模式*/
MCBSP_PCR_SCLKME_NO, /* SCLKME = 0 配合CLKSM设定采样速率生成器的时钟源*/
0, /* DXSTAT = N/A */
MCBSP_PCR_FSXP_ACTIVELOW, /* FSXP = 1 发送帧同步是高还是低电位*/
MCBSP_PCR_FSRP_ACTIVELOW, /* FSRP = 1 接收帧同步是高还是低电位*/
MCBSP_PCR_CLKXP_RISING, /* CLKXP = 0 发送时钟同步是上沿还是下沿*/
MCBSP_PCR_CLKRP_FALLING /* CLKRP = 0 接收时钟同步是上沿还是下沿*/
);
MCBSP_config(mhMcbsp, &mcbsp_cfg);
}
/*******************************************************************/
/* void main(void) */
/*******************************************************************/
void main(void)
{
// int waittime = 0;
// int works = FALSE;
unsigned short * xmitbufptr;
unsigned short * recvbufptr;
unsigned short val;
unsigned short * ptr;
int i;
/* initialize the CSL library */
CSL_init();
/* Set IPTR to start of interrupt vector table */
IRQ_setVecs((Uint16)(&VECSTART));
/* process transmit data */
printf("Processing Transmit string...\n");
ProcessTransmitData();
printf("String transmitted: %s \n", xmit_msg);
/* Open the McBSP channel 1 */
hMcbsp1 = MCBSP_open(MCBSP_PORT1, MCBSP_OPEN_RESET);
