STM32 with RFM95 not compiling

[phires]

Describe the bug Compiling for STM32 Bluepill with RM95 using Platform IO (VSCode)results in this error:

   22 |   #error "This board does not seem to have a SubGhz radio module, cannot use this library."

To Reproduce platform.ini

platform = https://github.com/platformio/platform-ststm32.git
board = bluepill_f103c8
framework = arduino
upload_protocol = stlink
monitor_port = COM7
lib_deps = 
    jgromes/RadioLib@^5.7.0

main.cpp

#define LORA_BANDWIDTH 250.0
#define LORA_SPREADING_FACTOR 10
#define LORA_CODING_RATE 6
#define LORA_SYNC_WORD 0x24
#define LORA_OUTPUT_POWER 10
#define LORA_CURRENT_LIMIT 80
#define LORA_PREAMBLE_LENGTH 15
#define LORA_GAIN 0
#define LORA_NSS PA4
#define LORA_DIO0 PA10
#define LORA_RST PA9
RFM95 radio1 = new Module(LORA_NSS, LORA_DIO0, LORA_RST);
void setup() {
    delay(1000);
initialize_lora();
    // delay to wait for settings
    delay(5000);
}
void initialize_lora() {
    DBG_PRINT(F("Initializing LoRa... "));
    #ifdef RADIO_LIB
    int state = radio1.begin(
        LORA_FREQ, 
        LORA_BANDWIDTH, 
        LORA_SPREADING_FACTOR, 
        LORA_CODING_RATE, 
        LORA_SYNC_WORD, 
        LORA_OUTPUT_POWER, 
        LORA_PREAMBLE_LENGTH,
        LORA_GAIN);
    if (state == RADIOLIB_ERR_NONE) {
        DBG_PRINTLN(F("success!"));
    } else {
        DBG_PRINT(F("failed, code "));
        DBG_PRINTLN(state);
    }
}

Expected behavior Compiling succuessful.

Additional info (please complete):

• MCU: Bluepill STM32 F103C8
• Link to Arduino core: https://github.com/stm32duino/Arduino_Core_STM32
• Wireless module type: RM95W
• Arduino IDE version Platform IO 3.0.0 with framework-arduinostm32 @ 4.20400.0
• Library version 5.7.0

[jgromes]

Looks like the same issue as was reported in #690. I was able to replicate it using your .ini configuration.

As a workaround, you can add lib_ldf_mode = chain+ to your .ini file, however, that's not really fixing the root cause - I was under the impression that having a library.json in the repository would force Platform.IO to apply the settings within that file, but apparently not ... I will have to investigate further.

[jgromes]

@phires seems like this was an issue in Platformio, as discussed here: https://community.platformio.org/t/library-ldf-mode-ignored-for-lib-deps/32639

It should be fixed now, could you try to clean and rebuild your project?

[derekmpeterson]

@jgromes FWIW I was able to successfully build for a STM32WLx that does use SubGhz prior to this change, and am now getting this error:

12 | #include <SubGhz.h>
      |          ^~~~~~~~~~
compilation terminated.
*** [.pio/build/lora_e5/lib909/RadioLib/modules/SX126x/STM32WLx_Module.cpp.o] Error 1

Edit: After reviewing the discussion you linked to, it seems relevant to note that I was directly adding SubGhz to lib_deps like this, but it's now failing with or without it:

lib_deps = 
   SubGhz
   RadioLib

[jgromes]

@derekmpeterson That's odd. @matthijskooijman any idea why this is the case? Checking the build process, SUBGHZSPI_BASE is defined, but despite that PlatformIO doesn't find the SubGhz library.

[matthijskooijman]

I had a look at this, but I'm quite unsure what happens. I also have little experience with pio, so that's not really helpful.

@derekmpeterson, it seems that you are seeing a different issue than the subject of this issue (you are using an STM32WL board, and the issue is about using another STM board). Maybe it would be helpful to create a separate issue for this (since this issue seems already fixed, just @phires needs to confirm it). If you create a new issue, could you include the entire error message? Seems you just pasted the context, not the error message itself.

[jgromes]

Seems the original was resovled, as I can no longer reproduce it. I added a separate issue for the new problem.