Hello,
this is my function
void process_dds_ext_demod(uint16_t *inbufPtr1, uint16_t *inbufPtr2, float *in_phase_val, float *quadrature_val)
{
/*transfer DMA buffers to local Buffers-------------------*/
//transform values from int to float
float ADC1_Buf[DATASIZE];
float ADC2_Buf[DATASIZE];
arm_q15_to_float((q15_t*)inbufPtr1, ADC1_Buf, DATASIZE);
arm_q15_to_float((q15_t*)inbufPtr2, ADC2_Buf, DATASIZE);
//highpass the reference signal
float reference_i_buf[DATASIZE];
float reference_q_buf[DATASIZE];
arm_biquad_cascade_df2T_f32(&highpass_filter, &ADC2_Buf[0], &reference_i_buf[0], DATASIZE);
arm_fir_f32(&hilbert_filter, &reference_i_buf[0], &reference_q_buf[0], DATASIZE);
//calculate the quadrature buffers
float in_phase_temp_buf[DATASIZE];
float quadrature_temp_buf[DATASIZE];
arm_mult_f32(&ADC1_Buf[0], &reference_i_buf[0], &in_phase_temp_buf[0], DATASIZE);
arm_mult_f32(&ADC1_Buf[0], &reference_q_buf[0], &quadrature_temp_buf[0], DATASIZE);
//calculate mean values
arm_mean_f32(&in_phase_temp_buf[0], DATASIZE, in_phase_val); //this works
arm_mean_f32(&quadrature_temp_buf[0], DATASIZE, &dummy_val); //this works
arm_mean_f32(&quadrature_temp_buf[0], DATASIZE, quadrature_val); //this doesnt work
}
in the last 3 instrutions is the problem. The first one works with the pointer argument of the function, for some reason the second one doesnt work and a hard fault is triggered and the third one works with an global variable. Does somebody know what the problem might be?
Best regards
