//******** Consumer ***************
// foreground thread, accepts data from producer
// calculates FFT, sends DC component to Display
// inputs: none
// outputs: none
void Consumer(void){
unsigned long data,DCcomponent; // 10-bit raw ADC sample, 0 to 1023
unsigned long t; // time in ms
unsigned long myId = OS_Id();
ADC_Collect(0, 1000, &Producer); // start ADC sampling, channel 0, 1000 Hz
NumCreated += OS_AddThread(&Display,128,0);
while(NumSamples < RUNLENGTH) {
for(t = 0; t < 64; t++){ // collect 64 ADC samples
data = OS_Fifo_Get(); // get from producer
x[t] = data; // real part is 0 to 1023, imaginary part is 0
}
cr4_fft_64_stm32(y,x,64); // complex FFT of last 64 ADC values
DCcomponent = y[0]&0xFFFF; // Real part at frequency 0, imaginary part should be zero
OS_MailBox_Send(DCcomponent);
}
OS_Kill(); // done
}
//******** Consumer ***************
// foreground thread, accepts data from producer
// calculates FFT, sends DC component to Display
// inputs: none
// outputs: none
void Consumer(void){
unsigned long data,DCcomponent; // 12-bit raw ADC sample, 0 to 4095
unsigned long t; // time in 2.5 ms
unsigned long myId = OS_Id();
//ADC_Collect(5, FS, &Producer); // start ADC sampling, channel 5, PD2, 400 Hz
//OS_DisableInterrupts();
ADC_Collect(5, FS, &Producer); // start ADC sampling, channel 5, PD2, 400 Hz //OS_EnableInterrupts();
NumCreated += OS_AddThread(&Display,128,0);
while(NumSamples < RUNLENGTH) {
PE2 = 0x04;
for(t = 0; t < 64; t++){ // collect 64 ADC samples
data = OS_Fifo_Get(); // get from producer
x[t] = data; // real part is 0 to 4095, imaginary part is 0
}
PE2 = 0x00;
cr4_fft_64_stm32(y,x,64); // complex FFT of last 64 ADC values
DCcomponent = y[0]&0xFFFF; // Real part at frequency 0, imaginary part should be zero
OS_MailBox_Send(DCcomponent); // called every 2.5ms*64 = 160ms
}
OS_Kill(); // done
}