syssi / esphome-evse-wallbox Goto Github PK

Hi, i have a evse din since 2022 but last month i had some issue, i think that in strange situation enable the bootloader

I purchased another evse din board and after a week same thing, green LED and no communication. I tried to contact the manufacturer but he didn't give me any suggestions...

1. For Modbus communication pin header PROG is used.
2. Modbus must be enabled
3. The TTL is 5V!

I've tried this component to control a SimpleEVSE wallbox. The basics seem to work well, I can control the charging current and e.g. enable & disable the EVSE via the switches for register 2005.

But it fails to readout the rest of the state, like firmware version etc.
Probably something minor with the modbus config, maybe there are some differences between the "EVSE" and "SimpleEVSE" wallboxes.

In the log I get these messages (note that it also complains when setting the charging current):

[13:47:51][D][uart_debug:114]: <<< 01:03:24:00:20:00:01:00:00:00:06:00:00:00:00:00:2A:00:20:00:00:00:03:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:84:F4
[13:47:53][D][number:054]: 'PV current' - Setting number value
[13:47:53][D][number:113]:   New number value: 10.000000
[13:47:53][D][number:012]: 'PV current': Sending state 10.000000
[13:47:53][D][number:054]: 'evse output current setting' - Setting number value
[13:47:53][D][number:113]:   New number value: 10.000000
[13:47:53][D][uart_debug:114]: >>> 01:10:03:E8:00:01:02:00:0A:02:7F
[13:47:53][W][evse_wallbox:058]: Invalid size (4) for EVSE wallbox frame!
[13:47:53][W][evse_wallbox:059]: Payload: 03.E8.00.01
[13:47:53][D][uart_debug:114]: <<< 01:10:03:E8:00:01:81:B9
[13:47:56][D][uart_debug:114]: >>> 01:03:03:E8:00:0A:45:BD
[13:47:56][D][modbus:119]: Modbus error function code: 0x83 exception: 2
[13:47:56][D][modbus:124]: Ignoring Modbus error - not expecting a response

When I connect to the wallbox with the example config provided in https://github.com/stegm/esphome-simpleevse-config I can e.g. read out the correct value "10" of the "firmware version" register. But that approach fails when trying to write values to the device.

Hi, can you add fine adjust for charging current? now i can select only integer value, i found this evcc-io/evcc#2053 (reply in thread)

Maybe you can change this accuracy decimals from 0 to 1

        cv.Optional(CONF_OUTPUT_CURRENT_SETTING): sensor.sensor_schema(
            unit_of_measurement=UNIT_AMPERE,
            icon=ICON_EMPTY,
            accuracy_decimals=0,
            device_class=DEVICE_CLASS_CURRENT,
            state_class=STATE_CLASS_MEASUREMENT,
        ),