ESP32 DevKit WIFI+BLE / BLE connect problem / ERROR: new parameter in esp_ble_gattc_open ???

[espruino-discuss3]

Posted at 2018-11-06 by Engineer

Hello everyone!
I'm using ESP32 DevKit with espruino_2v00_esp32
NRF.setScan(), NRF.findDevice() - work fine.
NRF.connect() and BluetoothRemoteGATTServer.connect() return ERROR: new parameter in esp_ble_gattc_open ???
I've tried almost all examples from Espruino Tutorials.
Any suggestion?

[espruino-discuss3]

Posted at 2018-11-06 by JumJum

Sorry,
there is a major change in BLE API.
I'm still working on a solution for that.
GATTC needs ble_addr_type which is not used in Espruino (at least AFAIK)
According to esp-idf examples it appears in an GAP event (ESP_GAP_BLE_SCAN_RESULT_EVT)

Definition is

typedef enum {
    BLE_ADDR_TYPE_PUBLIC        = 0x00,
    BLE_ADDR_TYPE_RANDOM        = 0x01,
    BLE_ADDR_TYPE_RPA_PUBLIC    = 0x02,
    BLE_ADDR_TYPE_RPA_RANDOM    = 0x03,
} esp_ble_addr_type_t;

Any idea to understand this parameter would be big help

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Posted at 2018-11-12 by @gfwilliams

I think this is in normal Espruino nRF52 builds:

https://github.com/espruino/Espruino/blob/master/libs/bluetooth/bluetooth_utils.c#L89
https://github.com/espruino/Espruino/blob/master/libs/bluetooth/bluetooth_utils.c#L100

As I understand it you have 2 basic address types that everyone uses:

• public = Guaranteed to be unique in the world
• random = Guaranteed to be unique locally (Espruino uses this one)

There may be others but those are the 2 that get the most use.

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Posted at 2020-06-11 by markopraakli

Hello

I have a exactly same problem with 2v05 version.

NRF.connect("9c:aa:1b:c0:48:3b private").then(function(server) {

or

NRF.connect("9c:aa:1b:c0:48:3b public").then(function(server) {

doesn't work at all. What's wrong?

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Posted at 2020-06-11 by @MaBecker

Well, as ESP32 is an unsupported device not all functions are working/available, like the one you tried.

But you are welcome to fix/add functions for the ESP32.