Kingwulin

> Yeah. It depends on the a2dp source. Your device may not send that event. What avrc capabilities does it say during device connect sequence? Also, the sink actually ask...

you mean the speaker device can't receive lyric massage is because the source device have not send lyric msg? And how to make the source device to send lyric massage...

do you mean those: btc_avrc_ct_cb_to_app(ESP_AVRC_CT_CHANGE_NOTIFY_EVT, &param); [link](https://github.com/espressif/esp-idf/blob/5c33570524118873f7bd32490c7a0442fede4bf8/components/bt/host/bluedroid/btc/profile/std/avrc/btc_avrc.c#L608) btc_avrc_ct_cb_to_app(ESP_AVRC_CT_GET_RN_CAPABILITIES_RSP_EVT, &param); [link](https://github.com/espressif/esp-idf/blob/5c33570524118873f7bd32490c7a0442fede4bf8/components/bt/host/bluedroid/btc/profile/std/avrc/btc_avrc.c#L621)

> IDF implements the request part, whereas adf doesn't case ESP_AVRC_CT_CHANGE_NOTIFY_EVT: and case ESP_AVRC_CT_GET_RN_CAPABILITIES_RSP_EVT I using the method the same as idf demo do,But the code running into dump error...

> IDF implements the request part, whereas adf doesn't case ESP_AVRC_CT_CHANGE_NOTIFY_EVT: and case ESP_AVRC_CT_GET_RN_CAPABILITIES_RSP_EVT Hi, I modify the bluethooth_service.c file as below，but it still can‘t get the music lyric ，would...

 

Hi

What is the advantage of supporting for receiving multiple SF's on a channel，can it solve the problem of signal collision？

Yeap，I have my own node,and I set its transmitting freq at 471.1MHz , receiving freq at 501.1MHz,.I find it work well when I use the single SF(SF10).But loss many messages...

Hi Jaap Braam Why not use the RegIrqFlags1 register to determine whether at timeout of receiving but use the value state [related code here](https://github.com/JaapBraam/LoRaWanGateway/blob/master/src/SX1276.lua#L324)