Revision 0:014d4be7a437, committed 2017-10-29

Comitter:

tommienator

Date:

Sun Oct 29 00:11:17 2017 +0000

Commit message:

Custom project

Changed in this revision

diff -r 000000000000 -r 014d4be7a437 STC3100Sensor.cpp
--- /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;
+}

diff -r 000000000000 -r 014d4be7a437 STC3100Sensor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/STC3100Sensor.h	Sun Oct 29 00:11:17 2017 +0000
@@ -0,0 +1,96 @@
+#ifndef STC3100Sensor_H_
+#define STC3100Sensor_H_
+
+/**
+ * I2C Device address
+ * ------------------
+ * The mbed API uses 8 bit addresses, so make sure to thake the 7 bit address
+ * and left shift it by 1 before passing it.
+ * The eight bit presents a R/W bit, see datasheet STC3100 page 12.
+ */
+#define STC3100_ADDRESS_READ    0b11100000
+#define STC3100_ADRESS_WRITE    0b11100001
+
+/**
+ * INTERNAL REGISTER MAP
+ * ---------------------
+ * For this application the RAM registers are not used
+ */
+#define REG_MODE                0   // Mode register                            (R/W)
+#define REG_CTRL                1   // Control and status register              (R/W)
+#define REG_CHARGE_LOW          2   // Gas gauge charge data,       bits 0-7    (R)
+#define REG_CHARGE_HIGH         3   // Gas gauge charge data,       bits 8-15   (R)
+#define REG_COUNTER_LOW         4   // Number of conversions,       bits 0-7    (R)
+#define REG_COUNTER_HIGH        5   // Number of conversions,       bits 8-15   (R)
+#define REG_CURRENT_LOW         6   // Battery current value,       bits 0-7    (R)
+#define REG_CURRENT_HIGH        7   // Battery current value,       bits 8-15   (R)
+#define REG_VOLTAGE_LOW         8   // Battery voltage value,       bits 0-7    (R)
+#define REG_VOLTAGE_HIGH        9   // Battery voltage value,       bits 8-15   (R)
+//#define REG_TEMPERATURE_LOW     10    // Temperature value,           bits 0-7    (R)
+//#define REG_TEMPERATURE_HIGH    11    // Temperature value,           bits 8-15   (R)
+
+//The following registers are the Device ID registers (R)
+//#define REG_ID0                 24
+//#define REG_ID1                 25
+//#define REG_ID2                 26
+//#define REG_ID3                 27
+//#define REG_ID4                 28
+//#define REG_ID5                 29
+//#define REG_ID6                 30
+//#define REG_ID7                 31
+
+typedef union STC3100Data {
+
+    // Reading of the chip will be stored in the byteArray
+    unsigned char byteArray[10];
+
+    struct {
+        unsigned char Mode;
+        unsigned char ControlStatus;
+        unsigned char ChargeLow;
+        unsigned char ChargeHigh;
+        unsigned char CounterLow;
+        unsigned char CounterHigh;
+        unsigned char CurrentLow;
+        unsigned char CurrentHigh;
+        unsigned char VoltageLow;
+        unsigned char VoltageHigh;
+//      unsigned char TemperatureLow;
+//      unsigned char TemperatureHigh;
+//      unsigned char Reserved[13];
+//      unsigned char ID0;
+//      unsigned char ID1;
+//      unsigned char ID2;
+//      unsigned char ID3;
+//      unsigned char ID4;
+//      unsigned char ID5;
+//      unsigned char ID6;
+//      unsigned char ID7;
+    };
+};
+/**
+ * Struct that stores the updated values.
+ */
+typedef struct STC3100ActualData {
+    // Voltage in mV
+    float voltage;
+    // Current in mA
+    float current;
+    // Current charge of the battery mAh
+    float charge;
+//  // Temperature in °C
+//  float temperature;
+};
+
+STC3100ActualData stc3100ActualData;
+STC3100Data stc3100Data;
+
+void stc3100Configure(void);
+void stc3100ReadChip(void);
+void updateData(void);
+float getVoltage(void);
+float getCurrent(void);
+float getCharge(void);
+//float getTemperature(void);
+
+#endif /* STC3100Sensor_H_ */

diff -r 000000000000 -r 014d4be7a437 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Oct 29 00:11:17 2017 +0000
@@ -0,0 +1,12 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+
+int main() {
+    while(1) {
+        myled = 1; // LED is ON
+        wait(0.2); // 200 ms
+        myled = 0; // LED is OFF
+        wait(1.0); // 1 sec
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 014d4be7a437 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Oct 29 00:11:17 2017 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/fb8e0ae1cceb
\ No newline at end of file