Not working with ESP32 2.05 bluetooth

[darrylb123]

Problem 1: Fail to connect
Bluetooth connect seems to need the name or the MAC with additional arguments
esp_spp_sec_t sec_mask=ESP_SPP_SEC_NONE; // or ESP_SPP_SEC_ENCRYPT|ESP_SPP_SEC_AUTHENTICATE to request pincode confirmation
esp_spp_role_t role=ESP_SPP_ROLE_SLAVE; // or ESP_SPP_ROLE_MASTER
connected = SerialBT.connect(address,0,sec_mask,role);

Problem 2: Returned MAC address is reversed
I have to reverse the order of the check
bool ValidateSenderAddress() {
// Compares the SMA inverter address to the "from" address contained in the message.
// Debug prints "P wrng dest" if there is no match.
return (Level1SrcAdd[5]==smaBTInverterAddressArray[0] &&
Level1SrcAdd[4]==smaBTInverterAddressArray[1] &&
Level1SrcAdd[3]==smaBTInverterAddressArray[2] &&
Level1SrcAdd[2]==smaBTInverterAddressArray[3] &&
Level1SrcAdd[1]==smaBTInverterAddressArray[4] &&
Level1SrcAdd[0]==smaBTInverterAddressArray[5]);
}

Nothing happens from there on.

[darrylb123]

Recompiled with fresh repo using ESP32 1.0.6
Bluetooth connection works, my SMA (5000TL) bluetooth MAC addressed still reversed.
Nothing more happens when I reverse the array.

[Lupo135]

Problem 2:
I solved the problem with the reversed Mac in the bluetooth.h file by filling the smaBTInverterAddressArray[6] and myBTAddress[6] in the reverse order e.g.={ 5,4,3,2,1,0}

Problem 3:
There is a failure in the SMAInverterPasscode[] encryption in file ESP32_to_SMA.ino.
The modulo operator (% 0xff) is wrong. All characers above 'w' are wrong encrypted.
//writeSMANET2SingleByte(level1packet,(v + 0x88) % 0xff); <= wrong
writeSMANET2SingleByte(level1packet,(v + 0x88)); <= correct

Status:
Since today, after some more corrections, I can logon to my SMC6000TL and read the current power and date (getInstantACPower).
There are still a lot of problems on e.g. receive multi packet. Currently I'm porting some routines from SBFspot to this code.

[darrylb123]

That is very good. I currently use SBFSpot on a RPi.
I looked at the sbfspot code and was wondering how difficult it is to port pure C++ to arduino.
I would be happy to assist your efforts. Have you forked the repository?
In the end, I want to upload to PVOutput so a lot of the code that was removed would have to go back.I also want to publish via mqtt.

[MahmoudiNawel]

Problem 1 : always fail to connect and i don't know why
i chnaged mac adrees but no result : fail to connect
please help

[Lupo135]

There is a first draft of my port from SBFspot to ESP32 on the project "ESP32_SMA-Inverter" on github. This works on my SMA SMC6000TL with a plugin SMA bluetooth module.