medição de corrente de comunicacao USB, com display e log em sdcard
Dependencies: mbed SDFileSystem2 ssd1306_library USBDevice
main.cpp@0:b418a81d46b0, 2021-01-08 (annotated)
- Committer:
- Marcelocostanzo
- Date:
- Fri Jan 08 11:18:24 2021 +0000
- Revision:
- 0:b418a81d46b0
funcionando
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Marcelocostanzo | 0:b418a81d46b0 | 1 | #include "mbed.h" |
Marcelocostanzo | 0:b418a81d46b0 | 2 | //#include "USBSerial.h" |
Marcelocostanzo | 0:b418a81d46b0 | 3 | #include "ssd1306.h" |
Marcelocostanzo | 0:b418a81d46b0 | 4 | #include "SDFileSystem.h" |
Marcelocostanzo | 0:b418a81d46b0 | 5 | |
Marcelocostanzo | 0:b418a81d46b0 | 6 | #define fator_filtro 5 |
Marcelocostanzo | 0:b418a81d46b0 | 7 | #define ctoT 0.224f |
Marcelocostanzo | 0:b418a81d46b0 | 8 | |
Marcelocostanzo | 0:b418a81d46b0 | 9 | SDFileSystem sd(D11, D12, D13, D10, "sd"); // the pinout on the mbed Cool Components workshop board |
Marcelocostanzo | 0:b418a81d46b0 | 10 | |
Marcelocostanzo | 0:b418a81d46b0 | 11 | FILE *myLogFile; |
Marcelocostanzo | 0:b418a81d46b0 | 12 | |
Marcelocostanzo | 0:b418a81d46b0 | 13 | AnalogIn amp_pin(A0); |
Marcelocostanzo | 0:b418a81d46b0 | 14 | AnalogIn volt_pin(A3); |
Marcelocostanzo | 0:b418a81d46b0 | 15 | |
Marcelocostanzo | 0:b418a81d46b0 | 16 | //Virtual serial port over USB |
Marcelocostanzo | 0:b418a81d46b0 | 17 | //USBSerial device; |
Marcelocostanzo | 0:b418a81d46b0 | 18 | Serial pc(USBTX, USBRX); |
Marcelocostanzo | 0:b418a81d46b0 | 19 | |
Marcelocostanzo | 0:b418a81d46b0 | 20 | SSD1306 lcd (D14, D15); // assumes default I2C address of 0x78 |
Marcelocostanzo | 0:b418a81d46b0 | 21 | |
Marcelocostanzo | 0:b418a81d46b0 | 22 | Ticker flipper; |
Marcelocostanzo | 0:b418a81d46b0 | 23 | Timer fileOpenTimer; |
Marcelocostanzo | 0:b418a81d46b0 | 24 | Timer debug_timer; |
Marcelocostanzo | 0:b418a81d46b0 | 25 | |
Marcelocostanzo | 0:b418a81d46b0 | 26 | //DigitalOut led(D13); |
Marcelocostanzo | 0:b418a81d46b0 | 27 | DigitalIn sw(PC_13); |
Marcelocostanzo | 0:b418a81d46b0 | 28 | |
Marcelocostanzo | 0:b418a81d46b0 | 29 | float mAmp_S; |
Marcelocostanzo | 0:b418a81d46b0 | 30 | float mAmp; |
Marcelocostanzo | 0:b418a81d46b0 | 31 | float mAmp_filtred; |
Marcelocostanzo | 0:b418a81d46b0 | 32 | float mAmp_filtred_old; |
Marcelocostanzo | 0:b418a81d46b0 | 33 | |
Marcelocostanzo | 0:b418a81d46b0 | 34 | int second = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 35 | int minute = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 36 | int hour = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 37 | bool flag; |
Marcelocostanzo | 0:b418a81d46b0 | 38 | |
Marcelocostanzo | 0:b418a81d46b0 | 39 | FILE *nextLogFile(void) |
Marcelocostanzo | 0:b418a81d46b0 | 40 | { |
Marcelocostanzo | 0:b418a81d46b0 | 41 | static unsigned int fileNumber = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 42 | char fileName[32]; |
Marcelocostanzo | 0:b418a81d46b0 | 43 | FILE *filePtr = NULL; |
Marcelocostanzo | 0:b418a81d46b0 | 44 | do |
Marcelocostanzo | 0:b418a81d46b0 | 45 | { |
Marcelocostanzo | 0:b418a81d46b0 | 46 | if (filePtr != NULL) |
Marcelocostanzo | 0:b418a81d46b0 | 47 | fclose(filePtr); |
Marcelocostanzo | 0:b418a81d46b0 | 48 | sprintf(fileName,"/sd/log%04u.csv",fileNumber++); |
Marcelocostanzo | 0:b418a81d46b0 | 49 | filePtr = fopen(fileName,"r"); |
Marcelocostanzo | 0:b418a81d46b0 | 50 | } while (filePtr != NULL); |
Marcelocostanzo | 0:b418a81d46b0 | 51 | return fopen( fileName,"w"); |
Marcelocostanzo | 0:b418a81d46b0 | 52 | } |
Marcelocostanzo | 0:b418a81d46b0 | 53 | |
Marcelocostanzo | 0:b418a81d46b0 | 54 | |
Marcelocostanzo | 0:b418a81d46b0 | 55 | void mAmp_time_base() |
Marcelocostanzo | 0:b418a81d46b0 | 56 | { |
Marcelocostanzo | 0:b418a81d46b0 | 57 | mAmp_S = mAmp_S + mAmp_filtred; |
Marcelocostanzo | 0:b418a81d46b0 | 58 | //led=!led; |
Marcelocostanzo | 0:b418a81d46b0 | 59 | second++; |
Marcelocostanzo | 0:b418a81d46b0 | 60 | flag =! flag; |
Marcelocostanzo | 0:b418a81d46b0 | 61 | } |
Marcelocostanzo | 0:b418a81d46b0 | 62 | |
Marcelocostanzo | 0:b418a81d46b0 | 63 | int main(void) |
Marcelocostanzo | 0:b418a81d46b0 | 64 | { |
Marcelocostanzo | 0:b418a81d46b0 | 65 | |
Marcelocostanzo | 0:b418a81d46b0 | 66 | float volt; |
Marcelocostanzo | 0:b418a81d46b0 | 67 | float volt_filtred; |
Marcelocostanzo | 0:b418a81d46b0 | 68 | float volt_filtred_old; |
Marcelocostanzo | 0:b418a81d46b0 | 69 | |
Marcelocostanzo | 0:b418a81d46b0 | 70 | float mAmp_H; |
Marcelocostanzo | 0:b418a81d46b0 | 71 | bool start = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 72 | |
Marcelocostanzo | 0:b418a81d46b0 | 73 | lcd.speed (SSD1306::Medium); // set working frequency |
Marcelocostanzo | 0:b418a81d46b0 | 74 | lcd.init(); // initialize SSD1306 |
Marcelocostanzo | 0:b418a81d46b0 | 75 | lcd.set_contrast(100); |
Marcelocostanzo | 0:b418a81d46b0 | 76 | lcd.cls(); // clear frame buffer |
Marcelocostanzo | 0:b418a81d46b0 | 77 | lcd.locate (3,2); // set text cursor to line 3, column 1 |
Marcelocostanzo | 0:b418a81d46b0 | 78 | lcd.printf ("Starting up"); // print to frame buffer |
Marcelocostanzo | 0:b418a81d46b0 | 79 | for( int i = 0; i < 16; i++) |
Marcelocostanzo | 0:b418a81d46b0 | 80 | { |
Marcelocostanzo | 0:b418a81d46b0 | 81 | lcd.locate (4,i); |
Marcelocostanzo | 0:b418a81d46b0 | 82 | lcd.printf ("."); |
Marcelocostanzo | 0:b418a81d46b0 | 83 | lcd.redraw(); |
Marcelocostanzo | 0:b418a81d46b0 | 84 | wait_ms(150); |
Marcelocostanzo | 0:b418a81d46b0 | 85 | } |
Marcelocostanzo | 0:b418a81d46b0 | 86 | wait_ms(300); |
Marcelocostanzo | 0:b418a81d46b0 | 87 | lcd.cls(); |
Marcelocostanzo | 0:b418a81d46b0 | 88 | lcd.redraw(); |
Marcelocostanzo | 0:b418a81d46b0 | 89 | |
Marcelocostanzo | 0:b418a81d46b0 | 90 | myLogFile = nextLogFile(); |
Marcelocostanzo | 0:b418a81d46b0 | 91 | if (!myLogFile) { |
Marcelocostanzo | 0:b418a81d46b0 | 92 | // ERROR failed to open the first log file for writing. |
Marcelocostanzo | 0:b418a81d46b0 | 93 | // The SD card is missing, not working, read only or full? |
Marcelocostanzo | 0:b418a81d46b0 | 94 | |
Marcelocostanzo | 0:b418a81d46b0 | 95 | return 1; // probably want to exit the program in this situation |
Marcelocostanzo | 0:b418a81d46b0 | 96 | } |
Marcelocostanzo | 0:b418a81d46b0 | 97 | float fator_filtro_x_ctoT = fator_filtro * ctoT; |
Marcelocostanzo | 0:b418a81d46b0 | 98 | float soma_fator_filtro_x_ctoT = 1.0f + fator_filtro_x_ctoT; |
Marcelocostanzo | 0:b418a81d46b0 | 99 | |
Marcelocostanzo | 0:b418a81d46b0 | 100 | printf("%f\n",fator_filtro_x_ctoT); |
Marcelocostanzo | 0:b418a81d46b0 | 101 | printf("%f\n",soma_fator_filtro_x_ctoT); |
Marcelocostanzo | 0:b418a81d46b0 | 102 | |
Marcelocostanzo | 0:b418a81d46b0 | 103 | while(1) |
Marcelocostanzo | 0:b418a81d46b0 | 104 | { |
Marcelocostanzo | 0:b418a81d46b0 | 105 | //debug_timer.reset(); |
Marcelocostanzo | 0:b418a81d46b0 | 106 | //debug_timer.start(); |
Marcelocostanzo | 0:b418a81d46b0 | 107 | |
Marcelocostanzo | 0:b418a81d46b0 | 108 | |
Marcelocostanzo | 0:b418a81d46b0 | 109 | if((sw == 0) && (start == 0)) |
Marcelocostanzo | 0:b418a81d46b0 | 110 | { |
Marcelocostanzo | 0:b418a81d46b0 | 111 | wait_ms(200); |
Marcelocostanzo | 0:b418a81d46b0 | 112 | if((sw == 0) && (start == 0)) |
Marcelocostanzo | 0:b418a81d46b0 | 113 | { |
Marcelocostanzo | 0:b418a81d46b0 | 114 | start = 1; |
Marcelocostanzo | 0:b418a81d46b0 | 115 | wait_ms(1000); |
Marcelocostanzo | 0:b418a81d46b0 | 116 | flipper.attach(&mAmp_time_base, 1.0f); |
Marcelocostanzo | 0:b418a81d46b0 | 117 | fileOpenTimer.start(); |
Marcelocostanzo | 0:b418a81d46b0 | 118 | lcd.cls(); |
Marcelocostanzo | 0:b418a81d46b0 | 119 | } |
Marcelocostanzo | 0:b418a81d46b0 | 120 | } |
Marcelocostanzo | 0:b418a81d46b0 | 121 | |
Marcelocostanzo | 0:b418a81d46b0 | 122 | if((sw == 0) && (start == 1)) |
Marcelocostanzo | 0:b418a81d46b0 | 123 | { |
Marcelocostanzo | 0:b418a81d46b0 | 124 | wait_ms(200); |
Marcelocostanzo | 0:b418a81d46b0 | 125 | if((sw == 0) && (start == 1)) |
Marcelocostanzo | 0:b418a81d46b0 | 126 | { |
Marcelocostanzo | 0:b418a81d46b0 | 127 | start = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 128 | flipper.detach(); |
Marcelocostanzo | 0:b418a81d46b0 | 129 | lcd.locate(1,1); |
Marcelocostanzo | 0:b418a81d46b0 | 130 | lcd.printf("Log finished"); |
Marcelocostanzo | 0:b418a81d46b0 | 131 | lcd.redraw(); |
Marcelocostanzo | 0:b418a81d46b0 | 132 | fileOpenTimer.stop(); |
Marcelocostanzo | 0:b418a81d46b0 | 133 | fileOpenTimer.reset(); // restart the timer |
Marcelocostanzo | 0:b418a81d46b0 | 134 | fclose(myLogFile); // close the current file |
Marcelocostanzo | 0:b418a81d46b0 | 135 | myLogFile = nextLogFile(); // open a new file |
Marcelocostanzo | 0:b418a81d46b0 | 136 | wait_ms(5000); |
Marcelocostanzo | 0:b418a81d46b0 | 137 | mAmp_S = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 138 | mAmp_H = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 139 | second = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 140 | minute = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 141 | hour = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 142 | lcd.cls(); |
Marcelocostanzo | 0:b418a81d46b0 | 143 | lcd.redraw(); |
Marcelocostanzo | 0:b418a81d46b0 | 144 | } |
Marcelocostanzo | 0:b418a81d46b0 | 145 | } |
Marcelocostanzo | 0:b418a81d46b0 | 146 | |
Marcelocostanzo | 0:b418a81d46b0 | 147 | |
Marcelocostanzo | 0:b418a81d46b0 | 148 | //mAmp = amp_pin.read() * 3.3f * 14.6f; |
Marcelocostanzo | 0:b418a81d46b0 | 149 | //mAmp = mAmp * 1.37f * 100.0f; |
Marcelocostanzo | 0:b418a81d46b0 | 150 | |
Marcelocostanzo | 0:b418a81d46b0 | 151 | mAmp = amp_pin.read() * 4870.0f;//6600.66f ; |
Marcelocostanzo | 0:b418a81d46b0 | 152 | |
Marcelocostanzo | 0:b418a81d46b0 | 153 | mAmp_filtred = ((fator_filtro_x_ctoT * mAmp) + (mAmp_filtred_old)) / soma_fator_filtro_x_ctoT; |
Marcelocostanzo | 0:b418a81d46b0 | 154 | mAmp_filtred_old = mAmp_filtred; |
Marcelocostanzo | 0:b418a81d46b0 | 155 | |
Marcelocostanzo | 0:b418a81d46b0 | 156 | |
Marcelocostanzo | 0:b418a81d46b0 | 157 | volt = volt_pin.read() * 36.45f; //3.3f * divisor resistivo 10k / 1k |
Marcelocostanzo | 0:b418a81d46b0 | 158 | |
Marcelocostanzo | 0:b418a81d46b0 | 159 | volt_filtred = ((fator_filtro_x_ctoT * volt) + (volt_filtred_old)) / soma_fator_filtro_x_ctoT; |
Marcelocostanzo | 0:b418a81d46b0 | 160 | volt_filtred_old = volt_filtred; |
Marcelocostanzo | 0:b418a81d46b0 | 161 | |
Marcelocostanzo | 0:b418a81d46b0 | 162 | |
Marcelocostanzo | 0:b418a81d46b0 | 163 | if(start == 0) |
Marcelocostanzo | 0:b418a81d46b0 | 164 | { |
Marcelocostanzo | 0:b418a81d46b0 | 165 | lcd.locate(1,1); |
Marcelocostanzo | 0:b418a81d46b0 | 166 | lcd.printf("Press to log"); |
Marcelocostanzo | 0:b418a81d46b0 | 167 | } |
Marcelocostanzo | 0:b418a81d46b0 | 168 | |
Marcelocostanzo | 0:b418a81d46b0 | 169 | if(start == 1) |
Marcelocostanzo | 0:b418a81d46b0 | 170 | { |
Marcelocostanzo | 0:b418a81d46b0 | 171 | mAmp_H = mAmp_S / 3600.0f; |
Marcelocostanzo | 0:b418a81d46b0 | 172 | lcd.locate(1,1); |
Marcelocostanzo | 0:b418a81d46b0 | 173 | lcd.printf("Logging..."); |
Marcelocostanzo | 0:b418a81d46b0 | 174 | lcd.locate(5,1); |
Marcelocostanzo | 0:b418a81d46b0 | 175 | lcd.printf("%8.2f mAh",mAmp_H); |
Marcelocostanzo | 0:b418a81d46b0 | 176 | lcd.locate(7,1); |
Marcelocostanzo | 0:b418a81d46b0 | 177 | lcd.printf("%02i:%02i:%02i",hour, minute, second); |
Marcelocostanzo | 0:b418a81d46b0 | 178 | } |
Marcelocostanzo | 0:b418a81d46b0 | 179 | |
Marcelocostanzo | 0:b418a81d46b0 | 180 | |
Marcelocostanzo | 0:b418a81d46b0 | 181 | if(second > 59) |
Marcelocostanzo | 0:b418a81d46b0 | 182 | { |
Marcelocostanzo | 0:b418a81d46b0 | 183 | second = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 184 | minute++; |
Marcelocostanzo | 0:b418a81d46b0 | 185 | } |
Marcelocostanzo | 0:b418a81d46b0 | 186 | |
Marcelocostanzo | 0:b418a81d46b0 | 187 | if(minute > 59) |
Marcelocostanzo | 0:b418a81d46b0 | 188 | { |
Marcelocostanzo | 0:b418a81d46b0 | 189 | minute = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 190 | hour++; |
Marcelocostanzo | 0:b418a81d46b0 | 191 | } |
Marcelocostanzo | 0:b418a81d46b0 | 192 | |
Marcelocostanzo | 0:b418a81d46b0 | 193 | if(hour > 23) |
Marcelocostanzo | 0:b418a81d46b0 | 194 | { |
Marcelocostanzo | 0:b418a81d46b0 | 195 | hour = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 196 | } |
Marcelocostanzo | 0:b418a81d46b0 | 197 | |
Marcelocostanzo | 0:b418a81d46b0 | 198 | lcd.locate(3,1); |
Marcelocostanzo | 0:b418a81d46b0 | 199 | lcd.printf("%8.2f V",volt_filtred); |
Marcelocostanzo | 0:b418a81d46b0 | 200 | |
Marcelocostanzo | 0:b418a81d46b0 | 201 | lcd.locate(4,1); |
Marcelocostanzo | 0:b418a81d46b0 | 202 | lcd.printf("%8.2f mA",mAmp_filtred); |
Marcelocostanzo | 0:b418a81d46b0 | 203 | |
Marcelocostanzo | 0:b418a81d46b0 | 204 | lcd.redraw(); |
Marcelocostanzo | 0:b418a81d46b0 | 205 | |
Marcelocostanzo | 0:b418a81d46b0 | 206 | if(flag == 1) |
Marcelocostanzo | 0:b418a81d46b0 | 207 | { |
Marcelocostanzo | 0:b418a81d46b0 | 208 | flag = 0; |
Marcelocostanzo | 0:b418a81d46b0 | 209 | if(start == 1) |
Marcelocostanzo | 0:b418a81d46b0 | 210 | { |
Marcelocostanzo | 0:b418a81d46b0 | 211 | fprintf(myLogFile, "%02i:%02i:%02i ; %8.2f ; %8.2f ; %8.2f\n", hour, minute, second, volt_filtred, mAmp_filtred, mAmp_H); |
Marcelocostanzo | 0:b418a81d46b0 | 212 | } |
Marcelocostanzo | 0:b418a81d46b0 | 213 | } |
Marcelocostanzo | 0:b418a81d46b0 | 214 | |
Marcelocostanzo | 0:b418a81d46b0 | 215 | if (fileOpenTimer > (5*60)) |
Marcelocostanzo | 0:b418a81d46b0 | 216 | { // file has been open 5 minutes |
Marcelocostanzo | 0:b418a81d46b0 | 217 | fclose(myLogFile); // close the current file |
Marcelocostanzo | 0:b418a81d46b0 | 218 | myLogFile = nextLogFile(); // open a new file |
Marcelocostanzo | 0:b418a81d46b0 | 219 | fileOpenTimer.reset(); // restart the timer |
Marcelocostanzo | 0:b418a81d46b0 | 220 | } |
Marcelocostanzo | 0:b418a81d46b0 | 221 | wait_ms(200); |
Marcelocostanzo | 0:b418a81d46b0 | 222 | |
Marcelocostanzo | 0:b418a81d46b0 | 223 | //debug_timer.stop(); |
Marcelocostanzo | 0:b418a81d46b0 | 224 | //printf("%f\n", debug_timer.read()); |
Marcelocostanzo | 0:b418a81d46b0 | 225 | } |
Marcelocostanzo | 0:b418a81d46b0 | 226 | } |