Yoichi Nagashima
/
CQ_nagasm_11_FFT1
NucleoF401RE EMG sensor with 2channel 16band FFT, mixed 7band XBee send, only test
main.cpp
- Committer:
- nagasm
- Date:
- 2014-12-20
- Revision:
- 0:5e2a4b964485
File content as of revision 0:5e2a4b964485:
#include "mbed.h" #include "sub.hpp" #include "notch.hpp" #include "fft1.hpp" float in1[16], out1[16], in2[16], out2[16]; int main(){ common_setup(); int fft_counter1 = 0; int fft_counter2 = 0; xbee.baud(38400); xbee.attach(&rx_fifoset, xbee.RxIrq); timer_setup.attach_us(&timer_interrupt, 5); // 5usec while(1){ tx_fifo_check(); if(timer_value[1] > 19){ // 0.1msec sampling timer_value[1] = 0; data1 = (float)gain * (analog_value2.read() - 0.5f); // A/D in (3) data2 = (float)gain * (analog_value3.read() - 0.5f); // A/D in (4) if(data1 < 0) data1 = -data1; // always detection ON if(notch_1 != 0) data1 = notch_filter1(data1); if(max_count != 0) data1 = move_mean_calc1(data1); if(data2 < 0) data2 = -data2; // always detection ON if(notch_2 != 0) data2 = notch_filter2(data2); if(max_count != 0) data2 = move_mean_calc2(data2); } if(timer_value[2] > 199){ // 1msec sampling timer_value[2] = 0; in1[fft_counter1] = data1; if(++fft_counter1 > 15){ fft_counter1 = 0; fft1(in1, out1); int summ = 0; for(int i=0; i<7; i++) { summ = summ + (uint16_t)((out1[2*i]+out1[2*i+1]) * 7.9) << ((6-i)*3); } tx_message(0x000000 + summ); } } if(timer_value[3] > 199){ // 1msec sampling timer_value[3] = 0; in2[fft_counter2] = data2; if(++fft_counter2 > 15){ fft_counter2 = 0; fft1(in2, out2); int summ = 0; for(int i=0; i<7; i++) { summ = summ + (uint16_t)((out2[2*i]+out2[2*i+1]) * 7.9) << ((6-i)*3); } tx_message(0x400000 + summ); } } if(timer_value[0] > 199999){ // 1000msec timer_value[0] = 0; myled = !myled; } if(rx_fifo_check() == 1){ int sum = 0; for (int i=0; i<6; i++) sum += conv_hex(raw_data[i])<<(4*(5-i)); tx_message(sum); // Echo Back if(sum>>16 == 0x80){ switch((sum & 0xff00)>>8){ case 0x00: break; case 0x01: gain = sum & 0x0f; break; case 0x02: max_count = sum & 0x7f; if (max_count>100) max_count = 100; sum_clear(); break; case 0x03: notch_1 = sum & 0x01; break; case 0x04: notch_2 = sum & 0x01; break; case 0x05: coef_set(sum & 0x3f); break; case 0x06: break; } } } } }