sci_rxd.txt

DSP关于F240的实例程序

/*********************************************************************
* Filename: example_c.c                                              *
*                                                                    *
* Author: David M. Alter, Texas Instruments Inc.                     *
*                                                                    *
* Last Modified: 03/14/01                                            *
*                                                                    *
* Description: This program illustrates basic initialization and     *
* operation of the LF2407 DSP.  The following peripherals are        *
* exercised:                                                         *
*  1) Timer 2 is configured to generate a 250ms period interrupt.    *
*  2) The quad LED bank on the LF2407 EVM is sequenced in the        *
*     Timer2 ISR.                                                    *
*  3) The IOPC0 pin is toggled in the Timer2 ISR.                    *
*  4) Timer 1 is configured to drive 20KHz 25% duty cycle symmetric  *
*     PWM on the PWM1 pin.                                           *
*                                                                    *
*********************************************************************/

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/*** Address Definitions ***/
#include        "f2407_c.h"


/*** Constant Definitions ***/

#define         pwm_half_per  1000    /* period/2, 10KHz symmetric PWM with
                                           a 40MHz CPUCLK */
volatile int sci_numble;
void Start_SPWM(void);
void sci_init(void);
interrupt void sciint(void);                                         
/*** Global Variable Definitions ***/

//unsigned int 	phase = 200;					/* Sine_Wave phase */

/*********************** Sin_Table 600*16 ******************************/

unsigned int sin_tab[400]={
      990,
      989,
      989,
      989,
      989,
      988,
      987,
      987,
      986,
      985,
      983,
      982,
      981,
      979,
      978,
      976,
      974,
      972,
      970,
      968,
      966,
      963,
      961,
      958,
      955,
      952,
      949,
      946,
      943,
      940,
      936,
      933,
      929,
      925,
      921,
      917,
      913,
      909,
      905,
      900,
      896,
      891,
      887,
      882,
      877,
      872,
      867,
      862,
      857,
      851,
      846,
      840,
      835,
      829,
      824,
      818,
      812,
      806,
      800,
      794,
      788,
      781,
      775,
      769,
      762,
      756,
      749,
      742,
      736,
      729,
      722,
      715,
      708,
      701,
      694,
      687,
      680,
      673,
      665,
      658,
      651,
      644,
      636,
      629,
      621,
      614,
      606,
      599,
      591,
      584,
      576,
      569,
      561,
      553,
      546,
      538,
      530,
      523,
      515,
      507,
      500,
      492,
      484,
      476,
      469,
      461,
      453,
      446,
      438,
      430,
      423,
      415,
      408,
      400,
      393,
      385,
      378,
      370,
      363,
      355,
      348,
      341,
      334,
      326,
      319,
      312,
      305,
      298,
      291,
      284,
      277,
      270,
      263,
      257,
      250,
      243,
      237,
      230,
      224,
      218,
      211,
      205,
      199,
      193,
      187,
      181,
      175,
      170,
      164,
      159,
      153,
      148,
      142,
      137,
      132,
      127,
      122,
      117,
      112,
      108,
      103,
      99,
      94,
      90,
      86,
      82,
      78,
      74,
      70,
      66,
      63,
      59,
      56,
      53,
      50,
      47,
      44,
      41,
      38,
      36,
      33,
      31,
      29,
      27,
      25,
      23,
      21,
      20,
      18,
      17,
      16,
      14,
      13,
      12,
      12,
      11,
      10,
      10,
      10,
      10,
      10,
      10,
      10,
      10,
      10,
      11,
      12,
      12,
      13,
      14,
      16,
      17,
      18,
      20,
      21,
      23,
      25,
      27,
      29,
      31,
      33,
      36,
      38,
      41,
      44,
      47,
      50,
      53,
      56,
      59,
      63,
      66,
      70,
      74,
      78,
      82,
      86,
      90,
      94,
      99,
      103,
      108,
      112,
      117,
      122,
      127,
      132,
      137,
      142,
      148,
      153,
      159,
      164,
      170,
      175,
      181,
      187,
      193,
      199,
      205,
      211,
      218,
      224,
      230,
      237,
      243,
      250,
      257,
      263,
      270,
      277,
      284,
      291,
      298,
      305,
      312,
      319,
      326,
      334,
      341,
      348,
      355,
      363,
      370,
      378,
      385,
      393,
      400,
      408,
      415,
      423,
      430,
      438,
      446,
      453,
      461,
      469,
      476,
      484,
      492,
      499,
      507,