Advertising failed to start (err -12)

RE: Advertising failed to start (err -12)

Øivind — Wed, 28 Jul 2021 12:21:50 GMT

You can not have CONFIG_BT_MAX_CONN=1 when you call advertising_start() from the disconnected() handler. That is why it is 2 by default.

RE: Advertising failed to start (err -12)

Sunil vignesh — Wed, 28 Jul 2021 11:09:31 GMT

Hi, I have enabled CONFIG_BT_HIDS_DEFAULT_PERM_RW_ENCRYPT

This is my full prj.confg

CONFIG_NCS_SAMPLES_DEFAULTS=y

CONFIG_BT=y
CONFIG_BT_DEBUG_LOG=y
CONFIG_BT_MAX_CONN=2
CONFIG_BT_MAX_PAIRED=1
CONFIG_BT_SMP=y
CONFIG_BT_L2CAP_TX_BUF_COUNT=5
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DEVICE_NAME="Nordic_HIDS_keyboard"
CONFIG_BT_DEVICE_APPEARANCE=961

CONFIG_BT_BAS=y
CONFIG_BT_HIDS=y
CONFIG_BT_HIDS_MAX_CLIENT_COUNT=1
CONFIG_BT_HIDS_DEFAULT_PERM_RW_ENCRYPT=y
CONFIG_BT_GATT_UUID16_POOL_SIZE=40
CONFIG_BT_GATT_CHRC_POOL_SIZE=20

CONFIG_BT_LL_SOFTDEVICE_DEFAULT=y

CONFIG_BT_CONN_CTX=y

CONFIG_BT_DIS=y
CONFIG_BT_DIS_PNP=y
CONFIG_BT_DIS_MANUF="NordicSemiconductor"
CONFIG_BT_DIS_PNP_VID_SRC=2
CONFIG_BT_DIS_PNP_VID=0x1915
CONFIG_BT_DIS_PNP_PID=0xEEEF
CONFIG_BT_DIS_PNP_VER=0x0100

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

CONFIG_BT_SETTINGS=y
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y
CONFIG_BT_SETTINGS_CCC_STORE_ON_WRITE=y
CONFIG_DK_LIBRARY=y

CONFIG_BT_MAX_CONN=1
CONFIG_BT_MAX_PAIRED=1

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=1

this error occur during disconnect

then i tried

CONFIG_BT_MAX_CONN=2
CONFIG_BT_MAX_PAIRED=1

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=1

If CONFIG_BT_MAX_CONN = 1 does i need to change any config or advertise packet

RE: Advertising failed to start (err -12)

Øivind — Wed, 28 Jul 2021 09:04:42 GMT

Hi,

Have you tried CONFIG_BT_HIDS_DEFAULT_PERM_RW_ENCRYPT=y , like Carl suggested? You tried GATT, but I can't see that you tried HIDS.

Did you follow Carl's advice: "... your advertising data may be bigger than the maximum of 31 bytes. Please check this." ? What did you find?

You are using an old version of the sdk, have you considered upgrading to v1.6.0 and seeing if that fixes your issues?

RE: Advertising failed to start (err -12)

Sunil vignesh — Sun, 25 Jul 2021 13:46:18 GMT

any update

RE: Advertising failed to start (err -12)

Sunil vignesh — Fri, 23 Jul 2021 05:02:50 GMT

how to set the advertising packets

RE: Advertising failed to start (err -12)

Sunil vignesh — Thu, 22 Jul 2021 08:59:04 GMT

Yes, I have followed this ticket,

also spoke with carl at end

He said "Error -12 means ENOMEM, which suggests your advertising data may be bigger than the maximum of 31 bytes. Please check this. "

this error comes only when is disconnected from the user device which means for the first time the advertising packets are working properly and then during disconnect how it will change

For my project i just need to connect with one particular device only from the example code i have changed the config as

CONFIG_BT_MAX_CONN=2
CONFIG_BT_MAX_PAIRED=2

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=2

CONFIG_BT_MAX_CONN=1
CONFIG_BT_MAX_PAIRED=1

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=1

this error occur during disconnect

then i tried

CONFIG_BT_MAX_CONN=2
CONFIG_BT_MAX_PAIRED=1

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=1

now during disconnect it work advertising but rarely it doesn't advertise

RE: Advertising failed to start (err -12)

Marjeris Romero — Thu, 22 Jul 2021 08:11:58 GMT

HI,

Carl tried to provided some help in this ticket. Have you tried his solution?

Best regards,

Marjeris

RE: Advertising failed to start (err -12)

Sunil vignesh — Wed, 21 Jul 2021 04:49:40 GMT

Is there any update

RE: Advertising failed to start (err -12)

Sunil vignesh — Mon, 19 Jul 2021 18:23:28 GMT

also When the example code : hid_keyboard connect with the IOS device not able to print the "hello" when button pressed

Ignoring data for unknown CID 0x003a

RE: Advertising failed to start (err -12)

Sunil vignesh — Sun, 18 Jul 2021 18:24:38 GMT

any update