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hfp_hf disconnects after a few seconds

http://esp32.io/viewtopic.php?f=13&t=22335

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hfp_hf disconnects after a few seconds

Posted: Thu Jul 22, 2021 1:14 pm
by iamflimflam1
I'm trying to run the esp-idf hfp_hf example

Code: Select all

examples/bluetooth/bluedroid/classic_bt/hfp_hf
It seems to work, but disconnects after a short period of time. This is what I see in the logs:

Code: Select all

hfp_hf> con
connect
W (6571) BT_APPL: HF Client found collision (ACL) ...
hfp_hf> I (14101) BT_HF: ESP_BT_GAP_DISC_STATE_CHANGED_EVT
W (20421) BT_RFCOMM: rfc_find_lcid_mcb LCID reused LCID:0x40 current:0x0
W (20421) BT_RFCOMM: RFCOMM_DisconnectInd LCID:0x40
I (66581) BT_HF: APP HFP event: CONNECTION_STATE_EVT
I (66581) BT_HF: --connection state disconnected, peer feats 0x0, chld_feats 0x0
This is connecting to a Mac computer. Any suggestions on how to get a stable connection or debug what is happening? Does anyone have a working example? My end goal is to setup the ESP32 as a bluetooth microphone and this seems to be the only way to do this.

I'm aware that the bandwidth is severely limited, but this is just for a proof of concept.

Re: hfp_hf disconnects after a few seconds

Posted: Sat Jul 24, 2021 9:41 am
by iamflimflam1
For anyone looking for a working hsp_hf I've pulled together something that works using: https://github.com/bluekitchen/btstack

It's very much based on their demo code with a very small amount of cleanup and addition of microphone input so it fully works.

https://github.com/atomic14/esp32-hsp-hf

Re: hfp_hf disconnects after a few seconds

Posted: Sun Nov 14, 2021 1:15 am
by expresspotato
Same problem here on IDF v4.3.1 pulled from master. Easy to reproduce, just fire up the HFP example and it always disconnects in about 10 seconds every single time...

Code: Select all

rst:0x1 (POWERON_RESET),boot:0x1f (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:7308
ho 0 tail 12 room 4
load:0x40078000,len:15328
load:0x40080400,len:4428
0x40080400: _init at ??:?

entry 0x400806a0
I (29) boot: ESP-IDF v4.3.1 2nd stage bootloader
I (29) boot: compile time 11:42:05
I (29) boot: chip revision: 3
I (32) qio_mode: Enabling default flash chip QIO
I (37) boot.esp32: SPI Speed      : 80MHz
I (42) boot.esp32: SPI Mode       : QIO
I (46) boot.esp32: SPI Flash Size : 8MB
I (51) boot: Enabling RNG early entropy source...
I (56) boot: Partition Table:
I (60) boot: ## Label            Usage          Type ST Offset   Length
I (67) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (75) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (82) boot:  2 factory          factory app      00 00 00010000 00200000
I (90) boot: End of partition table
I (94) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=16a34h ( 92724) map
I (128) esp_image: segment 1: paddr=00026a5c vaddr=3ffbdb60 size=03c68h ( 15464) load
I (133) esp_image: segment 2: paddr=0002a6cc vaddr=40080000 size=0594ch ( 22860) load
I (141) esp_image: segment 3: paddr=00030020 vaddr=400d0020 size=ab4a8h (701608) map
I (335) esp_image: segment 4: paddr=000db4d0 vaddr=4008594c size=13678h ( 79480) load
I (361) esp_image: segment 5: paddr=000eeb50 vaddr=50000200 size=00010h (    16) load
I (373) boot: Loaded app from partition at offset 0x10000
I (374) boot: Disabling RNG early entropy source...
I (385) psram: This chip is ESP32-D0WD
I (385) spiram: Found 64MBit SPI RAM device
I (385) spiram: SPI RAM mode: flash 80m sram 80m
I (388) spiram: PSRAM initialized, cache is in low/high (2-core) mode.
I (396) cpu_start: Pro cpu up.
I (399) cpu_start: Starting app cpu, entry point is 0x40081318
0x40081318: call_start_cpu1 at /home/kevin/esp-idf/components/esp_system/port/cpu_start.c:141

I (0) cpu_start: App cpu up.
I (893) spiram: SPI SRAM memory test OK
I (957) cpu_start: Pro cpu start user code
I (957) cpu_start: cpu freq: 80000000
I (957) cpu_start: Application information:
I (960) cpu_start: Project name:     liberty
I (965) cpu_start: App version:      27d8bd8-dirty
I (970) cpu_start: Compile time:     Nov 13 2021 11:42:01
I (976) cpu_start: ELF file SHA256:  8e536ef35b1881f8...
I (982) cpu_start: ESP-IDF:          v4.3.1
I (987) heap_init: Initializing. RAM available for dynamic allocation:
I (994) heap_init: At 3FFAFF10 len 000000F0 (0 KiB): DRAM
I (1000) heap_init: At 3FFB7CD8 len 00000328 (0 KiB): DRAM
I (1007) heap_init: At 3FFB9A20 len 00004108 (16 KiB): DRAM
I (1013) heap_init: At 3FFC3188 len 0001CE78 (115 KiB): DRAM
I (1019) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (1026) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (1032) heap_init: At 40098FC4 len 0000703C (28 KiB): IRAM
I (1038) spiram: Adding pool of 4093K of external SPI memory to heap allocator
I (1047) spi_flash: detected chip: gd
I (1051) spi_flash: flash io: qio
I (1066) pm: Frequency switching config: CPU_MAX: 80, APB_MAX: 80, APB_MIN: 40, Light sleep: DISABLED
I (1067) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (1077) spiram: Reserving pool of 64K of internal memory for DMA/internal allocations
I (1087) LIBERTY: ******** LIBERTY MAIN START ********
I (1087) pm: Frequency switching config: CPU_MAX: 10, APB_MAX: 10, APB_MIN: 10, Light sleep: ENABLED
I (1137) LIBERTY: Start reason (booted)
I (1137) pm: Frequency switching config: CPU_MAX: 240, APB_MAX: 240, APB_MIN: 80, Light sleep: DISABLED
I (1137) BTDM_INIT: BT controller compile version [bfbbe1e]
I (1147) system_api: Base MAC address is not set
I (1147) system_api: read default base MAC address from EFUSE
I (1157) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07
--> Event? 10I (2337) LIBERTY: event: 10
--> Event? 10I (2357) LIBERTY: event: 10
--> Event? 10I (2357) LIBERTY: event: 10
--> Event? 10I (2357) LIBERTY: event: 10
--> Event? 1I (2357) LIBERTY: ESP_BT_GAP_DISC_STATE_CHANGED_EVT
--> Event? 02
3
--> RSSI: -14
I (3397) LIBERTY: Found the target device address: 

I (3397) LIBERTY: c4 18 e9 6f bf fc 
I (3397) LIBERTY: Found the target device name: Kevin's S21
Connect.
--> Event? 1I (3407) LIBERTY: ESP_BT_GAP_DISC_STATE_CHANGED_EVT
E (4907) LIBERTY: APP HFP event: CONNECTION_STATE_EVT
E (4907) LIBERTY: --connection state connected, peer feats 0x0, chld_feats 0x0
W (4917) LIBERTY: Connected
E (5027) LIBERTY: APP HFP event: CALL_IND_EVT
E (5027) LIBERTY: --Call indicator NO call in progress
E (5027) LIBERTY: APP HFP event: CALL_SETUP_IND_EVT
E (5027) LIBERTY: --Call setup indicator NONE
E (5037) LIBERTY: APP HFP event: NETWORK_STATE_EVT
E (5037) LIBERTY: --NETWORK STATE available
E (5047) LIBERTY: APP HFP event: SIGNAL_STRENGTH_IND_EVT
E (5047) LIBERTY: -- signal strength: 0
E (5057) LIBERTY: APP HFP event: ROAMING_STATUS_IND_EVT
E (5057) LIBERTY: --ROAMING: inactive
E (5067) LIBERTY: APP HFP event: BATTERY_LEVEL_IND_EVT
E (5067) LIBERTY: --battery level 5
E (5077) LIBERTY: APP HFP event: CALL_HELD_IND_EVT
E (5077) LIBERTY: --Call held indicator NONE held
E (5087) LIBERTY: APP HFP event: CONNECTION_STATE_EVT
E (5087) LIBERTY: --connection state slc_connected, peer feats 0xfe7, chld_feats 0x3f
E (11187) LIBERTY: --> Event? 0
I (11187) LIBERTY: A2DP connection state: Connecting, [c4:18:e9:6f:bf:fc]
E (11207) LIBERTY: --> Event? 2
I (11207) LIBERTY: A2DP audio stream configuration, codec type 0
I (11207) LIBERTY: Bluetooth configured, sample rate=44100
E (11277) LIBERTY: --> Event? 0
I (11277) LIBERTY: A2DP connection state: Connected, [c4:18:e9:6f:bf:fc]
I (11277) LIBERTY: A2DP connection state = CONNECTED
I (11327) LIBERTY: ESP_AVRC_CT_CONNECTION_STATE_EVT
I (11327) LIBERTY: AVRC conn_state evt: state 1, [c4:18:e9:6f:bf:fc]
I (11327) LIBERTY: AVRC remote features 25b
--> Event? 13I (14487) LIBERTY: ESP_BT_GAP_MODE_CHG_EVT mode:2
E (18987) LIBERTY: --> Event? 0
I (18987) LIBERTY: A2DP connection state: Disconnected, [c4:18:e9:6f:bf:fc]
I (18987) LIBERTY: A2DP connection state =  DISCONNECTED
I (18997) LIBERTY: AVRC conn_state evt: state 0, [00:00:00:00:00:00]
E (18997) LIBERTY: APP HFP event: CONNECTION_STATE_EVT
E (19007) LIBERTY: --connection state disconnected, peer feats 0x0, chld_feats 0x0
W (19017) LIBERTY: Disconnected
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