Yoichi Nagashima / Mbed 2 deprecated CQ_nagasm_08_notch_test

add 60Hz/50Hz notch filter

Dependencies:   mbed

sub.hpp@2:048d8bddb100, 2014-12-20 (annotated)

Committer:
nagasm
Date:
Sat Dec 20 02:08:03 2014 +0000
Revision:
2:048d8bddb100
Parent:
0:5ec74240d7f1 
revised

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nagasm 0:5ec74240d7f1 1 unsigned char rxFIFO[256], txFIFO[256], raw_data[6];
nagasm 0:5ec74240d7f1 2 unsigned char rx_top, rx_end, tx_top, tx_end, phase;
nagasm 0:5ec74240d7f1 3 float mean_sum1, mean_sum2, ad_data1[101], ad_data2[101];
nagasm 0:5ec74240d7f1 4 int timer_value[6], max_count, fir_lpf, gain, ad_pointer1, ad_pointer2;
nagasm 0:5ec74240d7f1 5 const int order = 200;
nagasm 0:5ec74240d7f1 6 float xn1[order+1], xn2[order+1];
nagasm 0:5ec74240d7f1 7
nagasm 0:5ec74240d7f1 8 RawSerial xbee(PA_2, PA_3);
nagasm 0:5ec74240d7f1 9 Ticker timer_setup;
nagasm 0:5ec74240d7f1 10 AnalogIn analog_value0(A0);
nagasm 0:5ec74240d7f1 11 AnalogIn analog_value1(A1);
nagasm 0:5ec74240d7f1 12 AnalogIn analog_value2(A2);
nagasm 0:5ec74240d7f1 13 AnalogIn analog_value3(A3);
nagasm 0:5ec74240d7f1 14 DigitalOut myled(LED1);
nagasm 0:5ec74240d7f1 15
nagasm 0:5ec74240d7f1 16 void sum_clear(){
nagasm 0:5ec74240d7f1 17 int i;
nagasm 0:5ec74240d7f1 18 for (i=0; i<101; i++) ad_data1[i] = ad_data2[i] = 0;
nagasm 0:5ec74240d7f1 19 ad_pointer1 = ad_pointer2 = mean_sum1 = mean_sum2 = 0;
nagasm 0:5ec74240d7f1 20 }
nagasm 0:5ec74240d7f1 21
nagasm 0:5ec74240d7f1 22 void common_setup(){
nagasm 0:5ec74240d7f1 23 int i;
nagasm 0:5ec74240d7f1 24 rx_top = rx_end = tx_top = tx_end = phase = 0;
nagasm 0:5ec74240d7f1 25 max_count = 100;
nagasm 0:5ec74240d7f1 26 fir_lpf = 0;
nagasm 0:5ec74240d7f1 27 gain = 5;
nagasm 0:5ec74240d7f1 28 for (i=0; i<3; i++) timer_value[i] = 0;
nagasm 0:5ec74240d7f1 29 timer_value[3] = 10;
nagasm 0:5ec74240d7f1 30 timer_value[4] = 1500;
nagasm 0:5ec74240d7f1 31 for (i=0; i<=order; i++) xn1[i] = xn2[i] = 0.0;
nagasm 0:5ec74240d7f1 32 sum_clear();
nagasm 0:5ec74240d7f1 33 }
nagasm 0:5ec74240d7f1 34
nagasm 0:5ec74240d7f1 35 void timer_interrupt(){
nagasm 0:5ec74240d7f1 36 int i;
nagasm 0:5ec74240d7f1 37 for (i=0; i<6; i++) timer_value[i]++;
nagasm 0:5ec74240d7f1 38 }
nagasm 0:5ec74240d7f1 39
nagasm 0:5ec74240d7f1 40 void tx_fifo_check(){
nagasm 0:5ec74240d7f1 41 if(xbee.writeable() == 1){
nagasm 0:5ec74240d7f1 42 if(tx_top != tx_end){
nagasm 0:5ec74240d7f1 43 xbee.putc(txFIFO[tx_end]);
nagasm 0:5ec74240d7f1 44 ++tx_end &= 255;
nagasm 0:5ec74240d7f1 45 }
nagasm 0:5ec74240d7f1 46 }
nagasm 0:5ec74240d7f1 47 }
nagasm 0:5ec74240d7f1 48
nagasm 0:5ec74240d7f1 49 int rx_fifo_check(){
nagasm 0:5ec74240d7f1 50 unsigned char data;
nagasm 0:5ec74240d7f1 51 if(rx_top != rx_end){
nagasm 0:5ec74240d7f1 52 data = rxFIFO[rx_end];
nagasm 0:5ec74240d7f1 53 ++rx_end &= 255;
nagasm 0:5ec74240d7f1 54 if (data < 33){
nagasm 0:5ec74240d7f1 55 phase = 0;
nagasm 0:5ec74240d7f1 56 return(1);
nagasm 0:5ec74240d7f1 57 }
nagasm 0:5ec74240d7f1 58 raw_data[phase] = data;
nagasm 0:5ec74240d7f1 59 if(++phase > 5) phase = 0;
nagasm 0:5ec74240d7f1 60 return(0);
nagasm 0:5ec74240d7f1 61 }
nagasm 0:5ec74240d7f1 62 return(0);
nagasm 0:5ec74240d7f1 63 }
nagasm 0:5ec74240d7f1 64
nagasm 0:5ec74240d7f1 65 void rx_fifoset(void){
nagasm 0:5ec74240d7f1 66 rxFIFO[rx_top] = xbee.getc();
nagasm 0:5ec74240d7f1 67 ++rx_top &= 255;
nagasm 0:5ec74240d7f1 68 }
nagasm 0:5ec74240d7f1 69
nagasm 0:5ec74240d7f1 70 void tx_fifoset(unsigned char data){
nagasm 0:5ec74240d7f1 71 txFIFO[tx_top] = data;
nagasm 0:5ec74240d7f1 72 ++tx_top &= 255;
nagasm 0:5ec74240d7f1 73 }
nagasm 0:5ec74240d7f1 74
nagasm 0:5ec74240d7f1 75 unsigned char hex_conv(unsigned char data){
nagasm 0:5ec74240d7f1 76 data &= 15;
nagasm 0:5ec74240d7f1 77 if(data < 10) return(data+48);
nagasm 0:5ec74240d7f1 78 else return(data+55);
nagasm 0:5ec74240d7f1 79 }
nagasm 0:5ec74240d7f1 80
nagasm 0:5ec74240d7f1 81 unsigned char conv_hex(unsigned char data){
nagasm 0:5ec74240d7f1 82 if((data > 47) && (data < 58)) return(data-48);
nagasm 0:5ec74240d7f1 83 else if((data > 64) && (data < 71)) return(data-55);
nagasm 0:5ec74240d7f1 84 return(0);
nagasm 0:5ec74240d7f1 85 }
nagasm 0:5ec74240d7f1 86
nagasm 0:5ec74240d7f1 87 void tx_message(int data){
nagasm 0:5ec74240d7f1 88 int i;
nagasm 0:5ec74240d7f1 89 for (i=0; i<6; i++) tx_fifoset(hex_conv((data>>(4*(5-i))) & 15));
nagasm 0:5ec74240d7f1 90 tx_fifoset(13);
nagasm 0:5ec74240d7f1 91 }
nagasm 0:5ec74240d7f1 92
nagasm 0:5ec74240d7f1 93 float move_mean_calc1(float data){
nagasm 0:5ec74240d7f1 94 mean_sum1 = mean_sum1 - ad_data1[ad_pointer1] + data;
nagasm 0:5ec74240d7f1 95 ad_data1[ad_pointer1] = data;
nagasm 0:5ec74240d7f1 96 ad_pointer1++;
nagasm 0:5ec74240d7f1 97 if(ad_pointer1 == max_count) ad_pointer1 = 0;
nagasm 0:5ec74240d7f1 98 return(mean_sum1 / (float)max_count);
nagasm 0:5ec74240d7f1 99 }
nagasm 0:5ec74240d7f1 100
nagasm 0:5ec74240d7f1 101 float move_mean_calc2(float data){
nagasm 0:5ec74240d7f1 102 mean_sum2 = mean_sum2 - ad_data2[ad_pointer2] + data;
nagasm 0:5ec74240d7f1 103 ad_data2[ad_pointer2] = data;
nagasm 0:5ec74240d7f1 104 ad_pointer2++;
nagasm 0:5ec74240d7f1 105 if(ad_pointer2 == max_count) ad_pointer2 = 0;
nagasm 0:5ec74240d7f1 106 return(mean_sum2 / (float)max_count);
nagasm 0:5ec74240d7f1 107 }