Yoichi Nagashima
/
CQ_nagasm_11_FFT1
NucleoF401RE EMG sensor with 2channel 16band FFT, mixed 7band XBee send, only test
Diff: main.cpp
- Revision:
- 0:5e2a4b964485
diff -r 000000000000 -r 5e2a4b964485 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Dec 20 05:22:00 2014 +0000 @@ -0,0 +1,85 @@ +#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; + } + } + } + } +}