Maxim MAX6675 Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0°C to +1024°C) os2 and os5
Dependents: proyectoprueba3 proyectoRTOS proyectoRTOS2 proyectoRTOS ... more
max6675.cpp
- Committer:
- star297
- Date:
- 2019-05-09
- Revision:
- 0:7c1c768af92a
- Child:
- 2:74731b8476a0
File content as of revision 0:7c1c768af92a:
#include "max6675.h" max6675::max6675(PinName miso, PinName sclk, PinName cs) : max(NC, miso, sclk), _cs(cs) { max.format(16,1); // set 16 bit SPI format max.frequency(4000000); } float max6675::gettemp(int cf) { float temp = 0; int tempByte= 0; _cs = 0; wait_us(1); // wait to stablize tempByte = max.write(0); wait_us(1); // wait to finish _cs = 1; if (tempByte & (1<<2)) { // faulty or no sensor connected return -99; } else { temp = (tempByte)/32.0f; } if(cf) { temp = (temp*9.0f/5.0f) + 32.0f; // Convert value to ˚F } return temp; }