Mbed Thread not found but compiles OK

Development Platforms
1

I have an odd problem. My code compiles and works fine, but PlatformIO IDE in VS Code doesn’t believe that rtos::Thread exists in Mbed. Note that my platformio.ini includes “build_flags = -D PIO_FRAMEWORK_MBED_RTOS_PRESENT” (and again everything builds OK). However, I still get the following Intellisense error:

identifier “Thread” is undefined

When I actually open Thread.h (funny enough right-clicking and say go to definition on Thread works without issue), I see that the following preprocessor statement returns false which omits Thread from the rtos namespace:

#if MBED_CONF_RTOS_PRESENT || defined(DOXYGEN_ONLY) || defined(UNITTEST)

For some reason it doesn’t seem to be using my mbed_config.h.

Any ideas?

2

Try to rebuild the Intellisense and make sure that the .vscode/c_cpp_properties.json includes the macro MBED_CONF_RTOS_PRESENT.

3

Thanks for the response. I’ve tried rebuilding intellisense many times (including just now at your recommendation).

.vscode/c_pp_properties.json does not include “MBED_CONF_RTOS_PRESENT” anywhere, but it does have

"defines": [
                "PLATFORMIO=40305",
                "STM32L432xx",
                "PIO_FRAMEWORK_MBED_RTOS_PRESENT",
                ...
4

Seems like when creating the defines for the project, it doesn’t automatically expand PIO_FRAMEWORK_MBED_RTOS_PRESENT to MBED_CONF_RTOS_PRESENT although it does so during compile time.

As a work around, does explicitly writing

build_flags =
   -D PIO_FRAMEWORK_MBED_RTOS_PRESENT
   -D MBED_CONF_RTOS_PRESENT

and rebuilding the Intellisense fix the problem?

5

That works, but it doesn’t solve the underlying issue. mbed_config.h is not being used. I now am trying to change the default uart pins for stdio by setting

...
"target.stdio_uart_tx": "PA_2",
"target.stdio_uart_rx": "PA_3"
...

in mbed_app.json (the rx pin is PA_15 by default). Now mbed_config.h shows

#define MBED_CONF_TARGET_STDIO_UART_RX                                    PA_3
#define MBED_CONF_TARGET_STDIO_UART_TX                                    PA_2

but after some debugging, I find that the platform is still using PA_15 as the rx pin. In my PinNames.h file (a custom target), I see that the MBED_CONF_TARGET_STDIO_UART_RX and MBED_CONF_TARGET_STDIO_UART_TX preprocessor macros are undefined so the uart pins are not being overridden.

Thoughts on what I’ve done incorrectly? Any way I could have screwed this up with my custom_targets.json?