Thanks!

When using an iPad with Bluetooth 4.2, and sending data over BLE/GATT, we get an MTU size of 500, and can send a 1 MB file in around 2.5 minutes. Are you saying that using an iPad with BT 5.0 really won't speed up the transfer at all, since the ESP32 doesn't have hardware for BT 5? I was hoping mayb...

I was referencing this article, from Espressif website, that says they were BLE 5 compliant in Dec 2019.

https://www.espressif.com/en/news/BLE_5.0_Certification

However, I can't find information on what IDF version (or other libraries?) are required to comply.

Any info is appreciated.

Phil.

We are currently using ESP-IDF 3.3, and communicating from ESP32 to an iPad using BLE/GATT. (Using BLE 4.2 on the iPad) What IDF version is needed to support BLE 5? We transfer large (1 Meg) files from the iPad to the ESP32 over BLE, and it takes several minutes. I'd like to user BLE 5 on new iPads,...

I have an ESP-NOW (WiFi) project using ESP32-WROOM32 devices. All packets are transmitted as BROADCAST WiFi packets in the ESP-NOW protocol. Every device should receive all packets. Packets are broadcast continually at a rate of > 3 packets per second. However, sometimes a device will STOP receiving...

We also use ESP-NOW protocol and read the signal strength from each received packet. To do so, you have to configure a "promiscuous mode" callback function that will be called when each packet is received. For instance: esp_wifi_set_promiscuous(true); esp_wifi_set_promiscuous_rx_cb(&promiscuous_rx_c...

We have a product based on the ESP32-WROOM-32 that includes both ESP-NOW WiFi among many nodes, and a Bluetooth (BLE) link to an iPad. In normal usage, we have around 25K of "free" RAM. However, when the BLE signal strength to the iPad is weak, our available RAM drops to almost 0 while transmitting ...

PeterR: Thanks for the info. Are you saying that an Overrun condition can occur and that there is no way to detect it? Or, do you mean that we need to trap the Overrun error, and then discard a couple more frames following it? In my situation, I can easily discard a couple frames. I just need to kno...

PeterR: Is there an alternative to the "stock" IDF?

We also have had the impression that the ESP32 sometimes induces errors (bit shifts) in received CAN frames.

Is there a test or other version of IDF we could be using to improve CAN functionality? We are using 3.3 currently.

Thanks!

Thank you for the response. We verified that the self test works, and also that the bus has some error frames present even without the ESP32 attached. At this point, it appears the issue is NOT related to the ESP32.