This program operates a pH meter and requires an Excel spreadsheet template available at www.kissinstrments.com
main.cpp
- Committer:
- KISScientific
- Date:
- 2016-07-22
- Revision:
- 0:f6b418db17d2
File content as of revision 0:f6b418db17d2:
// The following is C++ code for the microcontroller pH meter. #include "mbed.h" #include "USBSerial.h" //DigitalOut reset(p8); Serial pc(USBTX, USBRX); AnalogIn input1(p15); DigitalOut d1(p16); DigitalOut d2(p17); AnalogOut offset(p18); DigitalOut d4(p19); DigitalOut d5(p20); DigitalOut myled1(LED1); DigitalOut myled2(LED2); DigitalOut myled3(LED3); DigitalOut myled4(LED4); unsigned short pHvalue; unsigned short avg; float Ioffset = 0.3; float Noffset = 0.3; char ch; int i = 1; void rec_param(float& Noffset) { pc.putc(0x0C); // Write to computer serial port ch = pc.getc(); while (ch != ' ') { ch = pc.getc(); } pc.scanf("%f", &Noffset); return; } int main(void) { rec_param(Noffset); wait(0.5); Ioffset = Noffset; offset = Ioffset; while(1) { myled1 = myled2 = myled3 = myled4 = 0; if(pc.readable()) { myled4 = 1; myled1 = myled2 = myled3 = 0; ch = pc.getc(); //check for stop if (ch == 'Q') { myled4 = 0; ch = ' '; } if (ch == 'S') { myled3 = 1; pHvalue = input1.read_u16(); pc.putc((pHvalue>>8)&0xFF); pc.putc((pHvalue>>0)&0xFF); wait(.003); //added this 2-16 , .005 } myled3 = 0; } } }