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ARMmbed / mbed-os-example-ble

BLE demos using mbed OS and mbed cli
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BLE examples throwing up errors in MBED Studio (OS6.2) #315

Closed Gerriko closed 3 years ago

Gerriko commented 4 years ago

I tested some of these examples over a month ago and they compiled (I believe it was OS 6.1).

Now, I have just tried to compile two examples on MBED Studio (OS6.2) and these threw up some "generic" errors for the main.cpp and in the "pretty_printer.h" file.

In file included from ./mbed-os/features/FEATURE_BLE/ble/BLE.h:20: ./mbed-os/features/FEATURE_BLE/ble/BLERoles.h:5:6: error: "BLE requires at least one role 'BROADCASTER' or 'OBSERVER' to be enabled"

error "BLE requires at least one role 'BROADCASTER' or 'OBSERVER' to be enabled"

^ In file included from ./main.cpp:19: In file included from ./mbed-os/features/FEATURE_BLE/ble/BLE.h:23: In file included from ./mbed-os/features/FEATURE_BLE/ble/Gap.h:20: ./mbed-os/features/FEATURE_BLE/ble/gap/Gap.h:20:10: fatal error: 'BLERoles.h' file not found

include "BLERoles.h"

Then for pretty_printer.h Unknown type name 'ble_error_t'; did you mean 'mbed::ble_error_t'? Use of undeclared identifier 'BLE_ERROR_NONE'; did you mean 'mbed::BLE_ERROR_NONE'? ... and this is repeated for all error cases in switch statement. Type 'const mbed::ble::address_t' does not provide a subscript operator

Gerriko commented 4 years ago

I have just discovered that if I use "mbed-os-empty" as my template or starting point then it does compile without error, although I am getting warnings because of the use of deprecated functions in main.cpp.

For example MBED Studio informs me that the time parameter used within "call_every" function is deprecated since MBED OS 6.0 and we are now at MBED OS 6.2 (found that using "500ms" instead of "500" resolves the warning): _blink_event = _event_queue.call_every(500, this, &GapDemo::blink);

The problem highlighted above arose when I used the "mbed-os-example-blinky-baremetal" as my starting point.

ciarmcom commented 3 years ago

Thank you for raising this detailed GitHub issue. I am now notifying our internal issue triagers. Internal Jira reference: https://jira.arm.com/browse/IOTOSM-2065

pan- commented 3 years ago

@Gerriko https://github.com/ARMmbed/mbed-os-example-blinky-baremetal contains a list of required dependencies in its mbed_app.json. Did you had the BLE dependencies to it ? If not the compilation errors seems normal but that doesn't explained why it worked with Mbed OS 6.1.

I don't know how mbed studio deals with these compilation requirement but that seems to be an issue to raise to the mbed studio team on mbed-os forums and not in this example repository.

The point on warnings due to call to deprecated function is being addressed by https://github.com/ARMmbed/mbed-os-example-ble/pull/328 .