var.c

利用合众达的C5416开发板上的ACI32B芯片编程的信号分析并进行FFT变换。

short temp1[2779];
short stft_buffer[1024];
short stft_input[1024];
short stft_sine[512];
short stft_cosine[512];

short temp2[1024];

short channal_a[SAM_NUM];		
short channal_b[SAM_NUM];
short channal_c[SAM_NUM];
short channal_d[SAM_NUM];			//channal_d 暂时作为中间存储区使用
short real_input[SAM_NUM];			//暂存需要运算的通道数据，与channal_d形成连续的运算空间
short sine_coef[HALF_SAM_NUM];      //存放sine或滤波器系数
short cosine_coef[HALF_SAM_NUM];    //存放cosine

unsigned int row=0;
unsigned int kk=0;

 
//user_func.h中用到如上变量



//extern void rfft_task();



//pa,pb,pc,pd四个变量是为了便于在CCS中取采样数据用的指针
short *pm=stft_buffer;
short *pn=stft_input;
short *pssin=stft_sine;
short *pscos=stft_cosine;

short *pa=channal_a;
short *pb=channal_b;
short *pc=channal_c;

short *pd=channal_d;
short *preal=real_input;
short *psin=sine_coef;
short *pcos=cosine_coef;