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Bugfix: Growatt HV, Add user customizable charge/discharge voltage #884

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Feb 12, 2025
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Bugfix: Growatt HV, Add user customizable charge/discharge voltage #884

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25 changes: 18 additions & 7 deletions Software/src/inverter/GROWATT-HV-CAN.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -164,11 +164,16 @@ void update_values_can_inverter() { //This function maps all the values fetched
}

//Map values to CAN messages

//Battery operating parameters and status information
//Recommended charge voltage (eg 400.0V = 4000 , 16bits long) (MIN 0, MAX 1000V)
GROWATT_3110.data.u8[0] = (datalayer.battery.info.max_design_voltage_dV >> 8);
GROWATT_3110.data.u8[1] = (datalayer.battery.info.max_design_voltage_dV & 0x00FF);
if (datalayer.battery.settings.user_set_voltage_limits_active) { //If user is requesting a specific voltage
//User specified charge voltage (eg 400.0V = 4000 , 16bits long) (MIN 0, MAX 1000V)
GROWATT_3110.data.u8[0] = (datalayer.battery.settings.max_user_set_charge_voltage_dV >> 8);
GROWATT_3110.data.u8[1] = (datalayer.battery.settings.max_user_set_charge_voltage_dV & 0x00FF);
} else {
//Battery max voltage used as charge voltage (eg 400.0V = 4000 , 16bits long) (MIN 0, MAX 1000V)
GROWATT_3110.data.u8[0] = (datalayer.battery.info.max_design_voltage_dV >> 8);
GROWATT_3110.data.u8[1] = (datalayer.battery.info.max_design_voltage_dV & 0x00FF);
}
//Charge limited current, 125 =12.5A (0.1, A) (Min 0, Max 300A)
GROWATT_3110.data.u8[2] = (datalayer.battery.status.max_charge_current_dA >> 8);
GROWATT_3110.data.u8[3] = (datalayer.battery.status.max_charge_current_dA & 0x00FF);
Expand Down Expand Up @@ -239,9 +244,15 @@ void update_values_can_inverter() { //This function maps all the values fetched
GROWATT_3140.data.u8[7] = 0;

//Battery working parameters and module number information
//Discharge cutoff voltage (0.1V) [0-1000V]
GROWATT_3150.data.u8[0] = (datalayer.battery.info.min_design_voltage_dV >> 8);
GROWATT_3150.data.u8[1] = (datalayer.battery.info.min_design_voltage_dV & 0x00FF);
if (datalayer.battery.settings.user_set_voltage_limits_active) { //If user is requesting a specific voltage
//Use user specified voltage as Discharge cutoff voltage (0.1V) [0-1000V]
GROWATT_3150.data.u8[0] = (datalayer.battery.settings.max_user_set_discharge_voltage_dV >> 8);
GROWATT_3150.data.u8[1] = (datalayer.battery.settings.max_user_set_discharge_voltage_dV & 0x00FF);
} else {
//Use battery min design voltage as Discharge cutoff voltage (0.1V) [0-1000V]
GROWATT_3150.data.u8[0] = (datalayer.battery.info.min_design_voltage_dV >> 8);
GROWATT_3150.data.u8[1] = (datalayer.battery.info.min_design_voltage_dV & 0x00FF);
}
//Main control unit temperature (0.1C) [-40 to 120*C]
GROWATT_3150.data.u8[2] = (datalayer.battery.status.temperature_max_dC >> 8);
GROWATT_3150.data.u8[3] = (datalayer.battery.status.temperature_max_dC & 0x00FF);
Expand Down