diff --git a/tasmota/xsns_13_ina219.ino b/tasmota/xsns_13_ina219.ino index e1177e35f..854cca5cd 100644 --- a/tasmota/xsns_13_ina219.ino +++ b/tasmota/xsns_13_ina219.ino @@ -51,23 +51,30 @@ #define INA219_CONFIG_GAIN_8_320MV (0x1800) // Gain 8, 320mV Range #define INA219_CONFIG_BADCRES_MASK (0x0780) // Bus ADC Resolution Mask -#define INA219_CONFIG_BADCRES_9BIT (0x0080) // 9-bit bus res = 0..511 -#define INA219_CONFIG_BADCRES_10BIT (0x0100) // 10-bit bus res = 0..1023 -#define INA219_CONFIG_BADCRES_11BIT (0x0200) // 11-bit bus res = 0..2047 -#define INA219_CONFIG_BADCRES_12BIT (0x0400) // 12-bit bus res = 0..4097 +#define INA219_CONFIG_BADCRES_9BIT_1S_84US (0x0<<7) // 9-bit bus res = 0..511 +#define INA219_CONFIG_BADCRES_10BIT_1S_148US (0x1<<7) // 10-bit bus res = 0..1023 +#define INA219_CONFIG_BADCRES_11BIT_1S_276US (0x2<<7) // 11-bit bus res = 0..2047 +#define INA219_CONFIG_BADCRES_12BIT_1S_532US (0x3<<7) // 12-bit bus res = 0..4097 +#define INA219_CONFIG_BADCRES_12BIT_2S_1060US (0x9<<7) // 2 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_4S_2130US (0xA<<7) // 4 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_8S_4260US (0xB<<7) // 8 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_16S_8510US (0xC<<7) // 16 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_32S_17MS (0xD<<7) // 32 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_64S_34MS (0xE<<7) // 64 x 12-bit bus samples averaged together +#define INA219_CONFIG_BADCRES_12BIT_128S_69MS (0xF<<7) // 128 x 12-bit bus samples averaged together #define INA219_CONFIG_SADCRES_MASK (0x0078) // Shunt ADC Resolution and Averaging Mask -#define INA219_CONFIG_SADCRES_9BIT_1S_84US (0x0000) // 1 x 9-bit shunt sample -#define INA219_CONFIG_SADCRES_10BIT_1S_148US (0x0008) // 1 x 10-bit shunt sample -#define INA219_CONFIG_SADCRES_11BIT_1S_276US (0x0010) // 1 x 11-bit shunt sample -#define INA219_CONFIG_SADCRES_12BIT_1S_532US (0x0018) // 1 x 12-bit shunt sample -#define INA219_CONFIG_SADCRES_12BIT_2S_1060US (0x0048) // 2 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_4S_2130US (0x0050) // 4 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_8S_4260US (0x0058) // 8 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_16S_8510US (0x0060) // 16 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_32S_17MS (0x0068) // 32 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_64S_34MS (0x0070) // 64 x 12-bit shunt samples averaged together -#define INA219_CONFIG_SADCRES_12BIT_128S_69MS (0x0078) // 128 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_9BIT_1S_84US (0x0<<3) // 1 x 9-bit shunt sample +#define INA219_CONFIG_SADCRES_10BIT_1S_148US (0x1<<3) // 1 x 10-bit shunt sample +#define INA219_CONFIG_SADCRES_11BIT_1S_276US (0x2<<3) // 1 x 11-bit shunt sample +#define INA219_CONFIG_SADCRES_12BIT_1S_532US (0x3<<3) // 1 x 12-bit shunt sample +#define INA219_CONFIG_SADCRES_12BIT_2S_1060US (0x9<<3) // 2 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_4S_2130US (0xA<<3) // 4 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_8S_4260US (0xB<<3) // 8 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_16S_8510US (0xC<<3) // 16 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_32S_17MS (0xD<<3) // 32 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_64S_34MS (0xE<<3) // 64 x 12-bit shunt samples averaged together +#define INA219_CONFIG_SADCRES_12BIT_128S_69MS (0xF<<3) // 128 x 12-bit shunt samples averaged together #define INA219_CONFIG_MODE_MASK (0x0007) // Operating Mode Mask #define INA219_CONFIG_MODE_POWERDOWN (0x0000) @@ -85,12 +92,21 @@ #define INA219_REG_CURRENT (0x04) #define INA219_REG_CALIBRATION (0x05) +#define INA219_DEFAULT_SHUNT_RESISTOR_MILLIOHMS (100.0) // 0.1 Ohm + uint8_t ina219_type[4] = {0,0,0,0}; uint8_t ina219_addresses[] = { INA219_ADDRESS1, INA219_ADDRESS2, INA219_ADDRESS3, INA219_ADDRESS4 }; -uint32_t ina219_cal_value = 0; -// The following multiplier is used to convert raw current values to mA, taking into account the current config settings -uint32_t ina219_current_divider_ma = 0; +#ifdef DEBUG_TASMOTA_SENSOR +// temporary strings for floating point in debug messages +char __ina219_dbg1[10]; +char __ina219_dbg2[10]; +#endif + +// The following multiplier is used to convert shunt voltage (in mV) to current (in A) +// Current_A = ShuntVoltage_mV / ShuntResistor_milliOhms = ShuntVoltage_mV * ina219_current_multiplier +// ina219_current_multiplier = 1 / ShuntResistor_milliOhms +float ina219_current_multiplier; uint8_t ina219_valid[4] = {0,0,0,0}; float ina219_voltage[4] = {0,0,0,0}; @@ -98,54 +114,75 @@ float ina219_current[4] = {0,0,0,0}; char ina219_types[] = "INA219"; uint8_t ina219_count = 0; +/*********************************************************************************************\ + * Calculate current multiplier depending on the selected mode + * For mode = 0, 1, 2 : legacy modes simplified as Vmax: 32V, Imax: 3.2A range + * For mode = 10..255 : specify Rshunt encoded as RRM where resistor value is RR * 10^M milliOhms + * Vmax: 32V, Imax: 0.320 / Rshunt + * Exemple: + * 10: Rshunt = 1 * 10^0 = 1 millOhms => Max current = 320A ! + * 11: Rshunt = 1 * 10^1 = 10 milliOhms => Max current = 32A + * 21: Rshunt = 2 * 10^1 = 20 milliOhms => Max current = 16A + * 12: Rshunt = 1 * 10^2 = 100 milliOhms => Max current = 3.2A == mode 0,1,2 + * 13: Rshunt = 1 * 10^3 = 1 Ohms => Max current = 320mA + * Note that some shunt values can be represented by 2 different encoded values such as + * 11 or 100 both present 10 milliOhms + * Because it is difficult to make a range check on such encoded value, none is performed +\*********************************************************************************************/ bool Ina219SetCalibration(uint8_t mode, uint16_t addr) { uint16_t config = 0; - switch (mode &3) { - case 0: // 32V 2A - case 3: - ina219_cal_value = 4096; - ina219_current_divider_ma = 10; // Current LSB = 100uA per bit (1000/100 = 10) - config = INA219_CONFIG_BVOLTAGERANGE_32V | INA219_CONFIG_GAIN_8_320MV | INA219_CONFIG_BADCRES_12BIT | INA219_CONFIG_SADCRES_12BIT_1S_532US | INA219_CONFIG_MODE_SANDBVOLT_CONTINUOUS; - break; - case 1: // 32V 1A - ina219_cal_value = 10240; - ina219_current_divider_ma = 25; // Current LSB = 40uA per bit (1000/40 = 25) - config |= INA219_CONFIG_BVOLTAGERANGE_32V | INA219_CONFIG_GAIN_8_320MV | INA219_CONFIG_BADCRES_12BIT | INA219_CONFIG_SADCRES_12BIT_1S_532US | INA219_CONFIG_MODE_SANDBVOLT_CONTINUOUS; - break; - case 2: // 16V 0.4A - ina219_cal_value = 8192; - ina219_current_divider_ma = 20; // Current LSB = 50uA per bit (1000/50 = 20) - config |= INA219_CONFIG_BVOLTAGERANGE_16V | INA219_CONFIG_GAIN_1_40MV | INA219_CONFIG_BADCRES_12BIT | INA219_CONFIG_SADCRES_12BIT_1S_532US | INA219_CONFIG_MODE_SANDBVOLT_CONTINUOUS; - break; + DEBUG_SENSOR_LOG("Ina219SetCalibration: mode=%d",mode); + if (mode < 5) + { + // All legacy modes 0..2 are handled the same and consider default 0.1 shunt resistor + ina219_current_multiplier = 1.0 / INA219_DEFAULT_SHUNT_RESISTOR_MILLIOHMS; + #ifdef DEBUG_TASMOTA_SENSOR + dtostrfd(ina219_current_multiplier,5,__ina219_dbg1); + DEBUG_SENSOR_LOG("Ina219SetCalibration: cur_mul=%s",__ina219_dbg1); + #endif } - // Set Calibration register to 'Cal' calculated above - bool success = I2cWrite16(addr, INA219_REG_CALIBRATION, ina219_cal_value); - if (success) { - // Set Config register to take into account the settings above - I2cWrite16(addr, INA219_REG_CONFIG, config); + else if (mode >= 10) + { + int mult = mode % 10; + int shunt_milliOhms = mode / 10; + for ( ; mult > 0 ; mult-- ) + shunt_milliOhms *= 10; + ina219_current_multiplier = 1.0 / shunt_milliOhms; + #ifdef DEBUG_TASMOTA_SENSOR + dtostrfd(ina219_current_multiplier,5,__ina219_dbg1); + DEBUG_SENSOR_LOG("Ina219SetCalibration: shunt=%dmO => cur_mul=%s",shunt_milliOhms,__ina219_dbg1); + #endif } - return success; + config = INA219_CONFIG_BVOLTAGERANGE_32V + | INA219_CONFIG_GAIN_8_320MV // Use max scale + | INA219_CONFIG_BADCRES_12BIT_16S_8510US // use averaging to improve accuracy + | INA219_CONFIG_SADCRES_12BIT_16S_8510US // use averaging to improve accuracy + | INA219_CONFIG_MODE_SANDBVOLT_CONTINUOUS; + // Set Config register to take into account the settings above + return I2cWrite16(addr, INA219_REG_CONFIG, config); } float Ina219GetShuntVoltage_mV(uint16_t addr) { // raw shunt voltage (16-bit signed integer, so +-32767) int16_t value = I2cReadS16(addr, INA219_REG_SHUNTVOLTAGE); - // shunt voltage in mV (so +-327mV) + DEBUG_SENSOR_LOG("Ina219GetShuntVoltage_mV: ShReg = 0x%04X",value); + // convert to shunt voltage in mV (so +-327mV) (LSB=10µV=0.01mV) return value * 0.01; } float Ina219GetBusVoltage_V(uint16_t addr) { - // Shift to the right 3 to drop CNVR and OVF and multiply by LSB - // raw bus voltage (16-bit signed integer, so +-32767) - int16_t value = (int16_t)(((uint16_t)I2cReadS16(addr, INA219_REG_BUSVOLTAGE) >> 3) * 4); - // bus voltage in volts - return value * 0.001; + // Shift 3 to the right to drop CNVR and OVF as unsigned + uint16_t value = I2cRead16(addr, INA219_REG_BUSVOLTAGE) >> 3; + DEBUG_SENSOR_LOG("Ina219GetBusVoltage_V: BusReg = 0x%04X",value); + // and multiply by LSB raw bus voltage to return bus voltage in volts (LSB=4mV=0.004V) + return value * 0.004; } +/* Not used any more float Ina219GetCurrent_mA(uint16_t addr) { // Sometimes a sharp load will reset the INA219, which will reset the cal register, @@ -159,14 +196,29 @@ float Ina219GetCurrent_mA(uint16_t addr) // current value in mA, taking into account the config settings and current LSB return value; } +*/ bool Ina219Read(void) { for (int i=0; i= 0) && (XdrvMailbox.payload <= 2)) { + if ((XdrvMailbox.payload >= 0) && (XdrvMailbox.payload <= 255)) { Settings.ina219_mode = XdrvMailbox.payload; restart_flag = 2; }