Diff: STC3100Sensor.cpp

Revision:

0:014d4be7a437

Child:

1:dbc1e56be2cc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/STC3100Sensor.cpp	Sun Oct 29 00:11:17 2017 +0000
@@ -0,0 +1,98 @@
+/**
+ * Driver for the STC3100
+ */
+#include "mbed.h"
+#include "STC3100Sensor.h"
+
+/**
+ * Configuring the STC3100
+ * ------------------------
+ * This is done for the user automatically. See datasheet STC3100 page 15 for the
+ * configuration that is applied.
+ */
+void stc3100Configure(void) {
+
+    //The user need to provide the first address of the register, an increment
+    //will be done automatically.
+    char writeData[3];
+    //REG_MODE address
+    writeData[0] = 0x00;
+    //Configuration REG_MODE
+    writeData[1] = 0x1c;
+    //Configuration REG_CTRL
+    writeData[2] = 0x03;
+
+    i2c.write(STC3100_ADRESS_WRITE, writeData, 3);
+}
+
+/**
+ * Reading the whole memory block (that is been declared) and save it to the byteArray
+ * of the ustc3100Data union.
+ */
+void stc3100ReadChip(void) {
+
+    i2c.read(STC3100_ADDRESS_READ, &(stc3100Data.byteArray[0]), 10);
+}
+
+/**
+ * Calculating of the data, they will be stored in the stc3100ActualData struct.
+ */
+void updateData(void) {
+
+    unsigned int high_byte = 0;
+    int value = 0;
+
+    stc3100ReadChip();
+
+    // Converting to voltage
+    high_byte = (unsigned int) stc3100Data.VoltageHigh;
+    high_byte <<= 8;
+    value = (high_byte & 0xFF00) | stc3100Data.VoltageLow;
+    stc3100ActualData.voltage = (float) value * 2.44;
+
+    // Converting to current
+    high_byte = (unsigned int) stc3100Data.CurrentHigh;
+    high_byte <<= 8;
+    value = (high_byte & 0xFF00) | stc3100Data.CurrentLow;
+    value <<= 2;
+    stc3100ActualData.current =
+            ((((float) value * 11.77) / 10.0) / 4.0) > 0.0 ?
+                    ((((float) value * 11.77) / 10.0) / 4.0) :
+                    -((((float) value * 11.77) / 10.0) / 4.0);
+    stc3100ActualData.current -= 54.0;
+
+    // Converting to charge
+    high_byte = (unsigned int) stc3100Data.ChargeHigh;
+    high_byte <<= 8;
+    value = (high_byte & 0xFF00) | stc3100Data.ChargeLow;
+    stc3100ActualData.charge = ((float) value * 6.70) / 10.0;
+
+    //  // Converting to temperature
+    //  high_byte = (unsigned int) stc3100Data.TemperatureHigh;
+    //  high_byte <<= 8;
+    //  value = (high_byte & 0xFF00) | stc3100Data.TemperatureLow;
+    //  value <<= 4;
+    //  stc3100ActualData.temperature = ((float) value * 0.125) / 16.0;
+
+}
+
+/**
+ * Method for returning the voltage
+ */
+float getVoltage(void) {
+    return stc3100ActualData.voltage;
+}
+
+/**
+ * Method for returning the current
+ */
+float getCurrent(void) {
+    return stc3100ActualData.current;
+}
+
+/**
+ * Method for returning the charge
+ */
+float getCharge(void) {
+    return stc3100ActualData.charge;
+}