Marcelo Costanzo Miranda
medição de corrente de comunicacao USB, com display e log em sdcard
Dependencies: mbed SDFileSystem2 ssd1306_library USBDevice
Revision 0:b418a81d46b0, committed 2021-01-08
- Comitter:
- Marcelocostanzo
- Date:
- Fri Jan 08 11:18:24 2021 +0000
- Commit message:
- funcionando
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Fri Jan 08 11:18:24 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/Marcelocostanzo/code/SDFileSystem2/#b991a55a9251
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice.lib Fri Jan 08 11:18:24 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/USBDevice/#53949e6131f6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Jan 08 11:18:24 2021 +0000
@@ -0,0 +1,226 @@
+#include "mbed.h"
+//#include "USBSerial.h"
+#include "ssd1306.h"
+#include "SDFileSystem.h"
+
+#define fator_filtro 5
+#define ctoT 0.224f
+
+SDFileSystem sd(D11, D12, D13, D10, "sd"); // the pinout on the mbed Cool Components workshop board
+
+FILE *myLogFile;
+
+AnalogIn amp_pin(A0);
+AnalogIn volt_pin(A3);
+
+//Virtual serial port over USB
+//USBSerial device;
+Serial pc(USBTX, USBRX);
+
+SSD1306 lcd (D14, D15); // assumes default I2C address of 0x78
+
+Ticker flipper;
+Timer fileOpenTimer;
+Timer debug_timer;
+
+//DigitalOut led(D13);
+DigitalIn sw(PC_13);
+
+float mAmp_S;
+float mAmp;
+float mAmp_filtred;
+float mAmp_filtred_old;
+
+int second = 0;
+int minute = 0;
+int hour = 0;
+bool flag;
+
+FILE *nextLogFile(void)
+{
+ static unsigned int fileNumber = 0;
+ char fileName[32];
+ FILE *filePtr = NULL;
+ do
+ {
+ if (filePtr != NULL)
+ fclose(filePtr);
+ sprintf(fileName,"/sd/log%04u.csv",fileNumber++);
+ filePtr = fopen(fileName,"r");
+ } while (filePtr != NULL);
+ return fopen( fileName,"w");
+}
+
+
+void mAmp_time_base()
+{
+ mAmp_S = mAmp_S + mAmp_filtred;
+ //led=!led;
+ second++;
+ flag =! flag;
+}
+
+int main(void)
+{
+
+ float volt;
+ float volt_filtred;
+ float volt_filtred_old;
+
+ float mAmp_H;
+ bool start = 0;
+
+ lcd.speed (SSD1306::Medium); // set working frequency
+ lcd.init(); // initialize SSD1306
+ lcd.set_contrast(100);
+ lcd.cls(); // clear frame buffer
+ lcd.locate (3,2); // set text cursor to line 3, column 1
+ lcd.printf ("Starting up"); // print to frame buffer
+ for( int i = 0; i < 16; i++)
+ {
+ lcd.locate (4,i);
+ lcd.printf (".");
+ lcd.redraw();
+ wait_ms(150);
+ }
+ wait_ms(300);
+ lcd.cls();
+ lcd.redraw();
+
+ myLogFile = nextLogFile();
+ if (!myLogFile) {
+ // ERROR failed to open the first log file for writing.
+ // The SD card is missing, not working, read only or full?
+
+ return 1; // probably want to exit the program in this situation
+ }
+ float fator_filtro_x_ctoT = fator_filtro * ctoT;
+ float soma_fator_filtro_x_ctoT = 1.0f + fator_filtro_x_ctoT;
+
+ printf("%f\n",fator_filtro_x_ctoT);
+ printf("%f\n",soma_fator_filtro_x_ctoT);
+
+ while(1)
+ {
+ //debug_timer.reset();
+ //debug_timer.start();
+
+
+ if((sw == 0) && (start == 0))
+ {
+ wait_ms(200);
+ if((sw == 0) && (start == 0))
+ {
+ start = 1;
+ wait_ms(1000);
+ flipper.attach(&mAmp_time_base, 1.0f);
+ fileOpenTimer.start();
+ lcd.cls();
+ }
+ }
+
+ if((sw == 0) && (start == 1))
+ {
+ wait_ms(200);
+ if((sw == 0) && (start == 1))
+ {
+ start = 0;
+ flipper.detach();
+ lcd.locate(1,1);
+ lcd.printf("Log finished");
+ lcd.redraw();
+ fileOpenTimer.stop();
+ fileOpenTimer.reset(); // restart the timer
+ fclose(myLogFile); // close the current file
+ myLogFile = nextLogFile(); // open a new file
+ wait_ms(5000);
+ mAmp_S = 0;
+ mAmp_H = 0;
+ second = 0;
+ minute = 0;
+ hour = 0;
+ lcd.cls();
+ lcd.redraw();
+ }
+ }
+
+
+ //mAmp = amp_pin.read() * 3.3f * 14.6f;
+ //mAmp = mAmp * 1.37f * 100.0f;
+
+ mAmp = amp_pin.read() * 4870.0f;//6600.66f ;
+
+ mAmp_filtred = ((fator_filtro_x_ctoT * mAmp) + (mAmp_filtred_old)) / soma_fator_filtro_x_ctoT;
+ mAmp_filtred_old = mAmp_filtred;
+
+
+ volt = volt_pin.read() * 36.45f; //3.3f * divisor resistivo 10k / 1k
+
+ volt_filtred = ((fator_filtro_x_ctoT * volt) + (volt_filtred_old)) / soma_fator_filtro_x_ctoT;
+ volt_filtred_old = volt_filtred;
+
+
+ if(start == 0)
+ {
+ lcd.locate(1,1);
+ lcd.printf("Press to log");
+ }
+
+ if(start == 1)
+ {
+ mAmp_H = mAmp_S / 3600.0f;
+ lcd.locate(1,1);
+ lcd.printf("Logging...");
+ lcd.locate(5,1);
+ lcd.printf("%8.2f mAh",mAmp_H);
+ lcd.locate(7,1);
+ lcd.printf("%02i:%02i:%02i",hour, minute, second);
+ }
+
+
+ if(second > 59)
+ {
+ second = 0;
+ minute++;
+ }
+
+ if(minute > 59)
+ {
+ minute = 0;
+ hour++;
+ }
+
+ if(hour > 23)
+ {
+ hour = 0;
+ }
+
+ lcd.locate(3,1);
+ lcd.printf("%8.2f V",volt_filtred);
+
+ lcd.locate(4,1);
+ lcd.printf("%8.2f mA",mAmp_filtred);
+
+ lcd.redraw();
+
+ if(flag == 1)
+ {
+ flag = 0;
+ if(start == 1)
+ {
+ fprintf(myLogFile, "%02i:%02i:%02i ; %8.2f ; %8.2f ; %8.2f\n", hour, minute, second, volt_filtred, mAmp_filtred, mAmp_H);
+ }
+ }
+
+ if (fileOpenTimer > (5*60))
+ { // file has been open 5 minutes
+ fclose(myLogFile); // close the current file
+ myLogFile = nextLogFile(); // open a new file
+ fileOpenTimer.reset(); // restart the timer
+ }
+ wait_ms(200);
+
+ //debug_timer.stop();
+ //printf("%f\n", debug_timer.read());
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Jan 08 11:18:24 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ssd1306_library.lib Fri Jan 08 11:18:24 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/rodriguj/code/ssd1306_library/#57209a7e9cba