Hi all，
There is one thing that needs attention here. We can't call esp_spp_write() multiple times in succession. We should wait for ESP_SPP_WRITE_EVT, then call esp_spp_write() again.
So, when do you call esp_spp_write()？If you call it multiple times in succession, please change it and test ...

Thank you WiFive!

Hi,

I am wondering if there are any description about the .mode field in spi_device_interface_config_t structure?

Currently I can only find a simple comment line like "SPI mode (0-3) ", where can one find descriptions about the meaning for each value of "0, 1, 2, 3"?

I am wondering if the mode ...

Does the SPI master driver support to get data from a slave device via SPI?

Assuming that SPI slave device can flag an interrupt line when there is data and then the MCU will be noticed via ISR and then a reader task will start reading the SPI data out using transactions. There are also some ...

Thank you Marcus, it is good to know that I am not alone. In my case, there is no peer verification since it is an one-way data collecting usage pattern.

I am trying sending data from ESP32 via esp_spp_write over a SPP handle to an Android device. The ESP32 does esp_spp_write() of 510 bytes packet and then sleep 84ms in a loop. This implies a 1000/84*510=6KB/s.

The puzzle point is that I got quite a few ESP_SPP_CONG_EVT during the process. What ...

How SPP handle is managed in SPP acceptor role?

It seems that the handle value got upon ESP_SPP_SRV_OPEN_EVT is not always the same as the handle upon ESP_SPP_CLOSE_EVT.


case ESP_SPP_SRV_OPEN_EVT:
ESP_LOGI(TAG, "srv_open: %d", param->srv_open.handle);
break;
case ESP_SPP_CLOSE_EVT:
ESP_LOGI ...

I tried multiple devices

• Nexus 7 tablet with Android 6

• MiPad tablet with Android 4.4.4

• Redmi4x phone with Android 7.1.2

I am playing with the spp_acceptor example. I added echo function for the incoming packets like below:


static void esp_spp_cv(esp_spp_cb_event_t event, esp_spp_cb_param_t *param){

...
case ESP_SPP_DATA_IND_EVT:
#if (SPP_SHOW_MODE == SPP_SHOW_DATA)
ESP_LOGI(TAG, "ESP_SPP_DATA_IND_EVT len=%d ...

Does anyone able to make gatt_security_server demo work with nRF connect mobile app?

I tried the demo on DevKitC-V2 board with nRF connect mobile on Android phone and found the bond can't work:


I (175287) SEC_GATTS_DEMO: ESP_GATTS_CONNECT_EVT
E (175627) BT: l2cble_start_conn_update, the last ...