Bluetooth AVRCP: linking fails with "undefined reference to `esp_avrc_ct_init'" (IDFGH-12109)

eni23 commented 7 months ago

Answers checklist.

[X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
[X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
[X] I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1.2

Espressif SoC revision.

ESP32-D0WD-V3

Operating System used.

Linux

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

None

Development Kit.

esp32-lyrat-mini v1.2

Power Supply used.

USB

What is the expected behavior?

Compilation & linking suceeds

What is the actual behavior?

linking fails with:

.../main/main.c:180: undefined reference to `esp_avrc_ct_init'
collect2: error: ld returned 1 exit status

Steps to reproduce.

On latest stable IDF (v5.1.2), i cannot use the BT AVRCP functions.

My CMakeLists.txt has REQUIRE bt inserted, but when i try to use it:

[...]
#include "esp_avrc_api.h"

[...]
    esp_err_t avrpc_err;
    avrpc_err = esp_avrc_ct_init();
[...]

It compiles correctly, but the linking fails:

.../main/main.c:180: undefined reference to `esp_avrc_ct_init'
collect2: error: ld returned 1 exit status

any ideas why?

Debug Logs.

No response

More Information.

No response

eni23 commented 7 months ago

Additional info: the linking also fails with esp-idf on master branch

esp-qing commented 6 months ago

Hi, can you show me the contents of the sdkconfig ?

eni23 commented 6 months ago

Hi, can you show me the contents of the sdkconfig ?

Sure (i hope the sdkconfig.defaults) is enough:

CONFIG_BT_ENABLED=y
CONFIG_BT_BLE_ENABLED=n
CONFIG_BTDM_CTRL_MODE_BR_EDR_ONLY=y
CONFIG_BTDM_CTRL_BR_EDR_MAX_SYNC_CONN=1
CONFIG_BT_BLUEDROID_ENABLED=y
CONFIG_BT_CLASSIC_ENABLED=y
CONFIG_BT_HFP_ENABLE=y
CONFIG_BT_HFP_CLIENT_ENABLE=y

esp-qing commented 6 months ago

Hi, please add CONFIG_BT_A2DP_ENABLE=y in sdkconfig.defaults, and then recompile.

eni23 commented 6 months ago

@esp-qing

Yes this does work. Unfortunately, it seems never to connect to the RC with only using HFP. Can you confirm that while its intended by the Bluetooth specs to use HFP together with AVRCP its not possible to do that in esp-idf?

esp-qing commented 6 months ago

Hi, @eni23 In esp-idf, enabling both AVRCP and A2DP is required simultaneously. It is currently not possible to use AVRCP independently, as the initialization of AVRCP is integrated within the A2DP initialization function. It is possible to use HFP together with A2DP in esp-idf and would this meet your needs?

espressif / esp-idf