Diff: max6675_2.cpp

Revision:

2:3bbbe439ec11

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max6675_2.cpp	Tue Oct 13 06:26:34 2020 +0000
@@ -0,0 +1,42 @@
+
+#include <mbed.h>
+#include "max6675_2.h"
+
+max6675_2::max6675_2(SPI& _spi_2, PinName _ncs_2) : spi_2(_spi_2), ncs_2(_ncs_2) {
+
+}
+
+float max6675_2::read_temp_2() {
+    short value_2 = 0;
+    float temp_2 = 0;
+    
+    uint8_t highByte_2=0;
+    uint8_t lowByte_2=0;
+    
+    select_2();
+    wait(.25); //This delay is needed else it does'nt seem to update the temp
+
+    highByte_2 = spi_2.write(0);
+    lowByte_2 = spi_2.write(0);
+    deselect_2();
+
+
+    if (lowByte_2 & (1<<2)) {
+        error("No Probe");
+    } else {
+        value_2 = (highByte_2 << 5 | lowByte_2>>3);
+    }
+
+    temp_2 = (value_2*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_2;
+}
+
+void max6675_2::select_2() {
+    ncs_2 = 0;
+}
+
+void max6675_2::deselect_2() {
+    ncs_2 = 1;
+}