Add MFi

[PaulZC]

No description provided.

[nseidle]

Excellent work! It's not compiling for me yet:

undefined reference to `esp_sdp_init'
undefined reference to `esp_sdp_create_record'

Also, the additional BT radio state BLUETOOTH_RADIO_SPP_ACCESSORY_MODE is not needed and requires the user to proactively configure the RTK device to work with an iPhone. IMO, this is bad. I don't think it's needed and could be removed. This is how:

• Expose an appleAccessory->isIap2Online() bool to the Apple Accessory lib. This returns true if the connection has successfully setup the IAP2 layer. Perhaps at the IAP2_CTL_MSG_AUTH_SUCCEEDED event.
• Add an online.iap2 in settings.h
• In updateAuthCoPro(), once isIal2Online, online.Iap2 = true.
• Use online.iap2 in Bluetooth.ino to direct traffic

What do you think?

[PaulZC]

Are the compiler errors caused by libbt.a? Have you updated libbt.a with the copy from the Patch folder? The workflow will do the same thing here. Also, please check you're on v3.0.7.

I think BLUETOOTH_RADIO_SPP_ACCESSORY_MODE probably is necessary; it requires isMaster to be true (Link). Whereas BLUETOOTH_RADIO_SPP requires false (Link). But I'll take another look...

[PaulZC]

@nseidle : I think you might be asking for the impossible... With isMaster set false I see:

[ 48124][I][BluetoothSerial.cpp:613] esp_bt_gap_cb(): ESP_BT_GAP_ACL_CONN_CMPL_STAT_EVT ACL connection from: 84:ab:1a:ac:f1:cb
Apple Device 84:ab:1a:ac:f1:cb found, connecting on channel 1
[ 48139][E][BluetoothSerial.cpp:1175] isReady(): Master mode is not active. Call begin(localName, true) to enable Master mode
[ 49514][I][BluetoothSerial.cpp:623] esp_bt_gap_cb(): ESP_BT_GAP_ACL_DISCONN_CMPL_STAT_EVT ACL disconnection complete status event: reason 275, handle 128

I'm open to suggestions, but currently I think we do need BLUETOOTH_RADIO_SPP_ACCESSORY_MODE?

[nseidle]

Compiling again! Thanks for the reminder. I forgot to patch my Arduino-CLI.

I think the trick is to start Bluetooth in Slave mode + SDP advertising of UUID. If an ACL event is detected, then switch to Bluetooth Master mode and initiate connection. I'll create a branch that demos this.