BMS_T2
Dependencies: INA226
Diff: max6675.cpp
- Revision:
- 3:61174d4de67d
- Parent:
- 2:3bbbe439ec11
--- a/max6675.cpp Tue Oct 13 06:26:34 2020 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,42 +0,0 @@ - -#include <mbed.h> -#include "max6675.h" - -max6675::max6675(SPI& _spi, PinName _ncs) : spi(_spi), ncs(_ncs) { - -} - -float max6675::read_temp() { - short value = 0; - float temp = 0; - - uint8_t highByte=0; - uint8_t lowByte=0; - - select(); - wait(.25); //This delay is needed else it does'nt seem to update the temp - - highByte = spi.write(0); - lowByte = spi.write(0); - deselect(); - - - if (lowByte & (1<<2)) { - error("No Probe"); - } else { - value = (highByte << 5 | lowByte>>3); - } - - temp = (value*0.25); // Multiply the value by 0.25 to get temp in ˚C or - // * (9.0/5.0)) + 32.0; // Convert value to ˚F (ensure proper floats!) - -return temp; -} - -void max6675::select() { - ncs = 0; -} - -void max6675::deselect() { - ncs = 1; -}