Diff: INA237/INA237.c

Revision:

9:8c7774aca512

diff -r f9a18e31c9d4 -r 8c7774aca512 INA237/INA237.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/INA237/INA237.c	Wed May 19 15:54:08 2021 +0000
@@ -0,0 +1,355 @@
+/*
+ *  ======== INA237.c ========
+ *  INA237 APIs for initialization and use of the INA237 peripheral
+ *
+ *  DO NOT EDIT - This file is generated by the SysConfig tool for
+ *  the TI Sensors in this application.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "INA237.h"
+//#include "mcu.h"
+
+
+#define INA237_0_config_register_VALUE (INA237_config_register_rst_NormalOperation | \
+                                        0x0000U | \
+                                        INA237_config_register_tempcomp_Shunttemperaturecompensationdisabled | \
+                                        INA237_config_register_adcrange_16384mV)
+#define INA237_0_adc_config_register_VALUE (INA237_adc_config_register_mode_Continuousbusvoltageshuntvoltageandtemperature | \
+                                            INA237_adc_config_register_vbusct_1052us | \
+                                            INA237_adc_config_register_vshct_1052us | \
+                                            INA237_adc_config_register_vtct_1052us | \
+                                            INA237_adc_config_register_avg_1)
+#define INA237_0_shunt_cal_register_VALUE 0x0000U
+#define INA237_0_diag_alrt_register_VALUE (INA237_diag_alrt_register_alrlen_Transparent | \
+                                           INA237_diag_alrt_register_cnvr_DisableconversionreadyflagonALERTpin | \
+                                           INA237_diag_alrt_register_slwalrt_ALERTcomparisononnonaveragedADCvalue | \
+                                           INA237_diag_alrt_register_apol_Normalactivelowopendrain)
+#define INA237_0_sovl_register_VALUE 0x7FFFU
+#define INA237_0_suvl_register_VALUE 0x8000U
+#define INA237_0_bovl_register_VALUE 0x7FFFU
+#define INA237_0_buvl_register_VALUE 0x0000U
+#define INA237_0_temp_limit_register_VALUE 0x7FF0U
+#define INA237_0_pwr_limit_register_VALUE 0xFFFFU
+
+static INA237_State INA237_0_state = {
+    /* Configuration and Settings */
+    .config = INA237_0_config_register_VALUE,
+    .adcconfig = INA237_0_adc_config_register_VALUE,
+    .shuntcal = INA237_0_shunt_cal_register_VALUE,
+    .diagalrt = INA237_0_diag_alrt_register_VALUE,
+    .sovl = INA237_0_sovl_register_VALUE,
+    .suvl = INA237_0_suvl_register_VALUE,
+    .bovl = INA237_0_bovl_register_VALUE,
+    .buvl = INA237_0_buvl_register_VALUE,
+    .templimit = INA237_0_temp_limit_register_VALUE,
+    .pwrlimit = INA237_0_pwr_limit_register_VALUE,
+
+    .adcrange = INA237_0_config_register_VALUE & INA237_config_register_adcrange_4096mV,
+    .currentlsb = 0,
+
+    /* Sensor's I2C bus ID and address */
+    .busId = 0,
+    .devAddr = 0x40U,
+
+};
+const INA237_Handle INA237_0 = &INA237_0_state;
+
+
+
+#define MSB(u16) (((u16) & 0xFF00U) >> 8)
+#define LSB(u16) ((u16) & 0xFFU)
+
+#define maxRegAddress 0x3F
+
+// Register size in bytes
+const uint8_t INA237_regSize[maxRegAddress+1] = {
+                                            2,2,2,2,2,2,2,2,\
+                                            3,2,2,2,2,2,2,2,\
+                                            2,2,0,0,0,0,0,0,\
+                                            0,0,0,0,0,0,0,0,\
+                                            0,0,0,0,0,0,0,0,\
+                                            0,0,0,0,0,0,0,0,\
+                                            0,0,0,0,0,0,0,0,\
+                                            0,0,0,0,0,0,2,2
+};
+
+void mcu_i2cInit(uint8_t busId);
+int8_t mcu_i2cTransfer(uint8_t busId, uint8_t sensorAddress,
+                              uint8_t *dataToWrite, uint8_t writeLength,
+                              uint8_t *dataToRead,  uint8_t readLength);
+void mcu_msWait(unsigned long msWait);                              
+
+/*
+ *  ======== INA237_writeReg ========
+ * Write register
+ */
+void INA237_writeReg(INA237_Handle sensor, uint8_t regAddr, uint16_t value)
+{
+    uint8_t txBuf[3] = {0}; //All writable registers are 2 bytes
+
+    txBuf[0] = regAddr;
+    txBuf[1] = MSB(value);
+    txBuf[2] = LSB(value);
+    mcu_i2cTransfer(sensor->busId, sensor->devAddr, txBuf, 3, NULL, 0);
+
+    //check for change in ADCRANGE 
+    if(regAddr == INA237_vshunt_register)
+    {
+        sensor->adcrange = value & INA237_config_register_adcrange_4096mV;
+    }
+}
+
+/*
+ *  ======== INA237_config ========
+ * Configure device with current settings.
+ */
+void INA237_config(INA237_Handle sensor)
+{
+    //Initialize the bus containing this sensor
+    mcu_i2cInit(sensor->busId);
+
+    //Write sensor Configuration Register
+   INA237_writeReg(sensor, INA237_config_register, sensor->config);
+   INA237_writeReg(sensor, INA237_adc_config_register, sensor->adcconfig);
+   INA237_writeReg(sensor, INA237_shunt_cal_register, sensor->shuntcal);
+   INA237_writeReg(sensor, INA237_diag_alrt_register, sensor->diagalrt);
+   INA237_writeReg(sensor, INA237_sovl_register, sensor->sovl);
+   INA237_writeReg(sensor, INA237_suvl_register, sensor->suvl);
+   INA237_writeReg(sensor, INA237_bovl_register, sensor->bovl);
+   INA237_writeReg(sensor, INA237_buvl_register, sensor->buvl);
+   INA237_writeReg(sensor, INA237_temp_limit_register, sensor->templimit);
+   INA237_writeReg(sensor, INA237_pwr_limit_register, sensor->pwrlimit);
+}
+
+/*
+ *  ======== INA237_setCURRENT_LSB ========
+ *  Set the CURRENT_LSB value used for calculations
+ */
+void INA237_setCURRENT_LSB(INA237_Handle sensor, float CURRENT_LSB)
+{
+    sensor->currentlsb = CURRENT_LSB;
+}
+
+/*
+ *  ======== INA237_readReg ========
+ *  Read register
+ */
+uint64_t INA237_readReg(INA237_Handle sensor, uint8_t regAddr)
+{
+    uint64_t value;
+    int i;
+    
+    uint8_t txBuf[1] = {0};
+    uint8_t rxBuf[5] = {0}; //max buffer size
+
+    txBuf[0] = regAddr;
+
+    //Read register
+    mcu_i2cTransfer(sensor->busId, sensor->devAddr, txBuf, 1, rxBuf, INA237_regSize[regAddr]);
+
+    //Combine bytes
+    value = rxBuf[0];
+    for(i = 1; i < INA237_regSize[regAddr]; i++)
+    {
+        value = (value << 8) | rxBuf[i];
+    }
+
+    return value;
+}
+
+/*
+ *  ======== INA237_getVSHUNT_mV ========
+ *  Get VSHUNT value (mV)
+ */
+float INA237_getVSHUNT_mV(INA237_Handle sensor)
+{
+    uint64_t value = INA237_readReg(sensor, INA237_vshunt_register);
+    float data;
+
+    //Convert for 2's compliment and signed value
+    if(value > 0x7FFF)
+    {
+        data = (float)value - 0x10000;
+    }
+    else
+    {
+        data = (float)value;
+    }
+
+    //Convert to mV
+
+    if(sensor->adcrange == INA237_config_register_adcrange_4096mV)
+    {
+        data = (data * 1.25) / 1000;
+    }
+    else
+    {
+        data = (data * 5) / 1000;
+    }
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getVBUS_V ========
+ *  Get VBUS value (V)
+ */
+float INA237_getVBUS_V(INA237_Handle sensor)
+{
+    uint64_t value = INA237_readReg(sensor, INA237_vbus_register);
+    float data;
+
+    //Convert for 2's compliment and signed value (though always positive)
+    if(value > 0x7FFF)
+    {
+        data = (float)value - 0x10000; //left for redundancy and error checking, should never get used
+    }
+    else
+    {
+        data = (float)value;
+    }
+
+    //Convert to V
+    data = (data * 3.125) / 1000;
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getDIETEMP_C ========
+ *  Get DIETMEP value (C)
+ */
+float INA237_getDIETEMP_C(INA237_Handle sensor)
+{
+    uint64_t value = INA237_readReg(sensor, INA237_dietemp_register);
+    float data;
+
+    //Remove reserved bits
+    value = value >> 4;
+
+    //Convert for 2's compliment and signed value
+    if(value > 0x7FF)
+    {
+        data = (float)value - 0x1000; 
+    }
+    else
+    {
+        data = (float)value;
+    }
+
+    //Convert to C
+    data = (data * 125) / 1000;
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getDIETEMP_F ========
+ *  Get DIETMEP value (F)
+ */
+float INA237_getDIETEMP_F(INA237_Handle sensor)
+{
+    float data = INA237_getDIETEMP_C(sensor);
+    
+    //Convert to F
+    data = (data * (9/5)) + 32;
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getCURRENT_signedLSB ========
+ *  Get CURRENT value (signed value in LSBs)
+ */
+float INA237_getCURRENT_signedLSB(INA237_Handle sensor)
+{
+    uint64_t value = INA237_readReg(sensor, INA237_current_register);
+    float data;
+
+    //Convert for 2's compliment and signed value 
+    if(value > 0x7FFF)
+    {
+        data = (float)value - 0x10000;
+    }
+    else
+    {
+        data = (float)value;
+    }
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getCURRENT_A ========
+ *  Get CURRENT value (A)
+ */
+float INA237_getCURRENT_A(INA237_Handle sensor)
+{
+    float data = INA237_getCURRENT_signedLSB(sensor);
+
+    data = data * sensor->currentlsb;
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getPOWER_signedLSB ========
+ *  Get POWER value (signed value in LSBs)
+ */
+float INA237_getPOWER_signedLSB(INA237_Handle sensor)
+{
+    uint64_t value = INA237_readReg(sensor, INA237_power_register);
+    float data;
+
+    data = (float)value;
+
+    return data;
+}
+
+/*
+ *  ======== INA237_getPOWER_W ========
+ *  Get POWER value (W)
+ */
+float INA237_getPOWER_W(INA237_Handle sensor)
+{
+    float data = INA237_getPOWER_signedLSB(sensor);
+
+    data = data * sensor->currentlsb * 0.2;
+
+    return data;
+}
+
+void mcu_i2cInit(uint8_t busId)
+{
+    /* Add MCU specific init necessary for I2C to be used */
+}
+
+int8_t mcu_i2cTransfer( uint8_t busId, uint8_t i2cAddr,
+                        uint8_t *dataToWrite, uint8_t writeLength,
+                        uint8_t *dataToRead,  uint8_t readLength)
+{
+    /*
+     *  Add MCU specific I2C read/write code here.
+     */
+
+    /*
+     *  Add MCU specific return code for error handling
+     */
+
+    return (0);
+}
+/********* MCU SPECIFIC I2C CODE ENDS HERE**********/
+
+
+
+
+/********* MCU SPECIFIC DELAY CODE STARTS HERE************/
+void mcu_msWait(unsigned long msWait)
+{
+    /*
+     *  Add MCU specific wait loop for msWait. The unit is in milli-seconds
+     */
+}
\ No newline at end of file