Chris
128d42c586
- Added function to read out the display_buffer via USB-Serial - Added basic structure and files for later complete firmware (still in progress) - Added Doc folder with schematic in it - Added Python script and batch file to read out the display buffer and open the image in gimp
155 lines
6.0 KiB
C
155 lines
6.0 KiB
C
/*
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* File: INA260.c
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*
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* Created: Created: Sunday August 2025 21:52:23
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* Author: Chris
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*/
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#include "INA260.h"
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// ============================================================================================
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// Includes
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#include "I2C_Master.h"
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// ============================================================================================
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// Defines
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#define INA260_I2CADDR_DEFAULT 0x40 ///< INA260 default i2c address
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#define INA260_CONGIG_RST_BIT 15
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#define INA260_CONGIG_AVG0_BIT 9
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#define INA260_CONGIG_VBUSCT0_BIT 6
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#define INA260_CONGIG_ISHCT0_BIT 3
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#define INA260_CONGIG_MODE1_BIT 0
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#define INA260_ENABLE_OCL_BIT 15
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#define INA260_ENABLE_APOL_BIT 1
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#define INA260_ENABLE_LEN_BIT 0
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#define UINT8_ARR_TO_UINT16(_U8_) ((uint16_t)(_U8_[0]) << 8) | (uint16_t)(_U8_[1])
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// ============================================================================================
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// Typedefs
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typedef enum _INA260_Mode {
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INA260_MODE_SHUTDOWN = 0x00, ///< SHUTDOWN: Minimize quiescient current and turn off current into the device inputs. Set another mode to exit shutown mode
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INA260_MODE_TRIGGERED = 0x03, ///< TRIGGERED: Trigger a one-shot measurement of current and bus voltage. Set the TRIGGERED mode again to take a new measurement
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INA260_MODE_CONTINUOUS = 0x07, ///< CONTINUOUS: (Default) Continuously update the current, bus voltage and power registers with new measurements
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} INA260_MeasurementMode;
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typedef enum _INA260_ConversionTime {
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INA260_TIME_140_us, ///< Measurement time: 140us
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INA260_TIME_204_us, ///< Measurement time: 204us
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INA260_TIME_332_us, ///< Measurement time: 332us
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INA260_TIME_588_us, ///< Measurement time: 588us
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INA260_TIME_1_1_ms, ///< Measurement time: 1.1ms (Default)
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INA260_TIME_2_116_ms, ///< Measurement time: 2.116ms
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INA260_TIME_4_156_ms, ///< Measurement time: 4.156ms
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INA260_TIME_8_244_ms, ///< Measurement time: 8.224ms
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} INA260_ConversionTime;
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typedef enum _count {
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INA260_COUNT_1, ///< Window size: 1 sample (Default)
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INA260_COUNT_4, ///< Window size: 4 samples
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INA260_COUNT_16, ///< Window size: 16 samples
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INA260_COUNT_64, ///< Window size: 64 samples
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INA260_COUNT_128, ///< Window size: 128 samples
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INA260_COUNT_256, ///< Window size: 256 samples
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INA260_COUNT_512, ///< Window size: 512 samples
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INA260_COUNT_1024, ///< Window size: 1024 samples
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} INA260_AveragingCount;
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typedef enum _INA260_AlertType {
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INA260_ALERT_CONVERSION_READY = 0x01, ///< Trigger on conversion ready
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INA260_ALERT_OVERPOWER = 0x02, ///< Trigger on power over limit
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INA260_ALERT_UNDERVOLTAGE = 0x04, ///< Trigger on bus voltage under limit
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INA260_ALERT_OVERVOLTAGE = 0x08 , ///< Trigger on bus voltage over limit
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INA260_ALERT_UNDERCURRENT = 0x10, ///< Trigger on current under limit
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INA260_ALERT_OVERCURRENT = 0x20, ///< Trigger on current over limit
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INA260_ALERT_NONE = 0x00 ///< Do not trigger alert pin (Default)
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} INA260_AlertType;
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typedef enum _INA260_AlertPolarity {
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INA260_ALERT_POLARITY_NORMAL = 0x0, ///< Active high open-collector (Default)
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INA260_ALERT_POLARITY_INVERTED = 0x1 ///< Active low open-collector
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} INA260_AlertPolarity;
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typedef enum _INA260_AlertLatch {
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INA260_ALERT_LATCH_ENABLED = 0x1, ///< Alert will latch until Mask/Enable register is read
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INA260_ALERT_LATCH_TRANSPARENT = 0x0 ///< Alert will reset when fault is cleared
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} INA260_AlertLatch;
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// ============================================================================================
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// Variables
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static uint16_t _INA260_BusVoltage_mV;
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static uint16_t _INA260_Current_mA;
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// ============================================================================================
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// Function Declarations
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uint16_t INA260_Read_Register(uint8_t reg_address);
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/*******************************************************************
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Functions
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*******************************************************************/
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void INA260_Init()
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{
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_INA260_BusVoltage_mV = 0;
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_INA260_Current_mA = 0;
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uint16_t Configuration_Register_Value =
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(0 << INA260_CONGIG_RST_BIT) | // No Reset
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(INA260_COUNT_1 << INA260_CONGIG_AVG0_BIT) | // Averaging Count
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(INA260_TIME_8_244_ms << INA260_CONGIG_VBUSCT0_BIT) | // Bus Voltage Conversion Time
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(INA260_TIME_8_244_ms << INA260_CONGIG_ISHCT0_BIT) | // Shunt Current Conversion Time
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(INA260_MODE_CONTINUOUS << INA260_CONGIG_MODE1_BIT); // Operating Mode
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I2CM_Packet_Transmit(INA260_I2CADDR_DEFAULT, INA260_REG_CONFIG, 1, (uint8_t*)(&Configuration_Register_Value), 2);
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uint16_t Enable_Register_Value =
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(1 << INA260_ENABLE_OCL_BIT) | // Over Current Limit
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(0 << INA260_ENABLE_APOL_BIT) | // Alert Polarity Bit
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(1 << INA260_ENABLE_LEN_BIT); // Alert Latch Enable
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I2CM_Packet_Transmit(INA260_I2CADDR_DEFAULT, INA260_REG_MASK_ENABLE, 1, (uint8_t*)(&Enable_Register_Value), 2);
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}
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void INA260_Read_BusVoltage()
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{
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uint32_t INA260_BusVoltage = (uint32_t)INA260_Read_Register(INA260_REG_BUSVOLTAGE);
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_INA260_BusVoltage_mV = (int16_t)((INA260_BusVoltage * 1250) / 1000);
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}
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void INA260_Read_Current()
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{
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uint32_t INA260_Current = (uint32_t)INA260_Read_Register(INA260_REG_CURRENT);
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_INA260_Current_mA = (int16_t)((INA260_Current * 1250) / 1000);
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}
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uint16_t INA260_Get_BusVoltage_mV()
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{
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return _INA260_BusVoltage_mV;
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}
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uint16_t INA260_Get_Current_mA()
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{
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return _INA260_Current_mA;
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}
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/*******************************************************************
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Internal Functions
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*******************************************************************/
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uint16_t INA260_Read_Register(uint8_t reg_address)
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{
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uint8_t Receive_Data[2];
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I2CM_Packet_Receive(INA260_I2CADDR_DEFAULT, reg_address, 1, Receive_Data, 2);
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return UINT8_ARR_TO_UINT16(Receive_Data);
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}
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