Espressif Systems ESP Faq page 9

4.2.6 When using ESP32 to design a self-developed Ethernet board, after downloaded the official
esp-idf/examples/ethernet example, errors are reported as follows, what is the reason?
4.2.7 When Ethernet and Wi-Fi co-exist, is Ethernet prioritized to transfer data?
4.2.8 Does ESP32 Ethernet support MII interface?
4.2.9 Is it possible to connect ESP32-S2 to Ethernet externally?
4.2.10 Do the ESP32 series chips support to use EMAC and SPI-Ethernet modules simultaneously?
4.3 coexistence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
4.3.1 When Wi-Fi coexists with Bluetooth, what mode does it support?
4.3.2 When Wi-Fi coexists with ESP-BLE-MESH, the Wi-Fi throughput is low, why?
4.3.3 Does ESP32 support coexistence between ESP-WIFI-MESH and Bluetooth® LE Mesh?
4.3.4 Does ESP32 support coexistence between Bluetooth® and Wi-Fi?
4.3.5 When Wi-Fi, Bluetooth® LE, and A2DP sink coexist, audio data reception is lost and
lagged while entering Bluetooth LE scanning. How to resolve such issue?
4.3.6 Can BLE advertising (Connectable) and iBeacon sending (advertising) coexist?
4.4 Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.4.1 Analog-to-Digital Converter (ADC)
4.4.2 Digital-to-Analog Converter (DAC)
4.4.3 GPIO & RTC GPIO
4.4.4 Inter-Integrated Circuit (I2C)
4.4.5 Inter-IC Sound (I2S)
4.4.6 LCD
4.4.7 LED Control (LEDC)
4.4.8 Motor Control Pulse Width Modulator (MCPWM)
4.4.9 Pulse Counter (PCNT)
4.4.10 Remote Control Transceiver (RMT)
4.4.11 Secure Digital Input Output (SDIO)
4.4.12 Serial Peripheral Interface (SPI)
4.4.13 Timer
4.4.14 Touch Sensor
4.4.15 Two-Wire Automotive Interface (TWAI)
4.4.16 Universal Asynchronous Receiver/Transmitter (UART)
4.4.17 USB
4.4.18 Other Peripherals
4.5 Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.5.1 ESP-TLS
4.5.2 HTTP
4.5.3 lwIP
4.5.4 Mbed TLS
4.5.5 MQTT
4.5.6 Other Protocols
4.6 Provisioning
4.6.1 Can I add any broadcast data I want to Android ESP-Touch (e.g., add a device ID so that
ESP32 can receive this ID)?
4.7 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
4.7.1 Is the firmware in ESP8266 readable?
4.7.2 Is it possible to encrypt firmware for ESP8285?
4.7.3 What is the difference between secure boot v1 and v2?
4.7.4 After enabling secure boot, there is a build error indicating missing files. What could be
the reasons？
4.7.5 After enabling secure boot, is it possible for modules to be flashed again?
4.7.6 With flash encryption enabled, a module reports an error as flash read error after
reflashed. How to resolve such issue?
4.7.7 After enabling flash encryption and secure boot for ESP32, how to disable them?
4.7.8 Is there any security strategy for ESP32 to protect its firmware?
4.7.9 When ESP32 debugging GDB after enabling flash encryption, why does it continuously
reset and restart?
4.7.10 How to enable flash encryption for ESP32?
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