Posted on August 21, 2017 at 15:19Hi all
I have Problem with applying dsplib functions while working on keil software and stm32f407
I write these codes and add an array of input data with the length of 2048
&sharpinclude 'stm32f4xx_hal.h'
&sharpinclude 'arm_math.h'
&sharpinclude <arm_const_structs.h>
&sharpdefine arm_cfft_f32
&sharpdefine arm_cmplx_mag_f32
uint32_t fftSize = 1024;
uint32_t ifftFlag = 0;
uint32_t doBitReverse = 1;
uint32_t refIndex = 213, testIndex = 0;
&sharpifdef __GNUC__
&sharpdefine PUTCHAR_PROTOTYPE int __io_putchar(int ch)
&sharpelse
&sharpdefine PUTCHAR_PROTOTYPE int fputc(int ch,FILE *f)
&sharpendif
PUTCHAR_PROTOTYPE
{
HAL_UART_Transmit(&huart2,(uint8_t*)&ch,1,100);
return ch;
}
♯
arm_cfft_f32(&arm_cfft_sR_f32_len1024, testInput_f32_10khz, ifftFlag, doBitReverse);
arm_cmplx_mag_f32(testInput_f32_10khz, testOutput, fftSize);
for (j=0;j<=1023;j++){
printf('%2f\r\n',testOutput[j]);
HAL_Delay(100);
}
I want to understand What is the correctness of the output so I use usart2 to print the output in hercules terminal ,but unfortunately the output is zero!!As I change the input the output is still zero..
I also tried lcd but it dosnot show any thing!
what did I miss??thanks very much
#stm32f4
