Chapter 4. Software framework
Does ESP8285 support CCS (Cisco Compatible eXtensions)?
No, it doesn’t.
Does ESP32 support LoRa (Long Range Radio) communication?
No, the ESP32 itself does not have the LoRa protocol stack and the corresponding RF parts. However,
to realize communication between Wi-Fi and LoRa devices, you can connect an external chip integrated
with LoRa protocol to ESP32. In this way, ESP32 can be used as the master control MCU to connect
the LoRa chip.
After calling esp_netif_t* wifiAP = esp_netif_create_default_wifi_ap() for ESP32-S2
chips, a following call of esp_netif_destroy(wifiAP) to deinit caused a 12-byte of memory leakage.
What is the reason?
• It is necessary to call esp_wifi_clear_default_wifi_driver_and_handlers(wifiAP) be-
fore esp_netif_destroy(wifiAP). This is the correct deinit process. Following this process, there
will be no memory leakage.
• Alternatively, call esp_netif_destroy_default_wifi(wifiAP), which is supported by ESP-IDF
v4.4 and later versions.
How to implement the certicate auto-download function?
CHIP: ESP32
Please refer to aws certicate automatic download function .
How to get more debug information based on errno in ESP-IDF?
• The errno list in ESP-IDF v3.x exists directly in the IDF. Click errno.h to check it.
• The errno.h for ESP-IDF v4.x is located under the compiler toolchain. For example, for esp-2020r3, the
path of errno.h is /root/.espressif/tools/xtensa-esp32-elf/esp-2020r3-8.4.0/
xtensa-esp32-elf/xtensa-esp32-elf/include/sys/errno.h.
Does the ESP8266_RTOS_SDK support the TR-069 protocol?
No.The ESP8266_RTOS_SDK itself does not provide native support for the TR-069 protocol, but
you can implement TR-069 protocol stack according to your requirements and integrate it into the
ESP8266_RTOS_SDK. You can also use third-party TR-069 protocol stacks for integration. In sum-
mary, ESP8266_RTOS_SDK can support the TR-069 protocol, but requires yourself to integrate and
implement.
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