Espressif Systems ESP - 2.3 Environment setup

4.10.99 [Connect] How to troubleshoot the issue that ESP32 series of products cannot connect to
the router over Wi-Fi from the hardware and software aspects? . . . . . . . . . . . . . . 145
4.10.100After being connected to the router, ESP32 prints W (798209)
wifi:<ba-add>idx:0 (ifx:0, f0:2f:74:9b:20:78), tid:0,
ssn:154, winSize:64 and W (798216) wifi:<ba-del>idx several times
every 5 minutes and consumes much more power. Why? . . . . . . . . . . . . . . . . . . 146
4.10.101Why can’t ESP32 keep the Wi-Fi sending rate at a 󰝘xed value with the function
esp_wi󰝘_con󰝘g_80211_tx_rate() to maintain stable transmission? . . . . . . . . . . . . . 146
4.10.102How do I debug the ESP32 station that is connected to a router but does not get an IP
properly? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
4.10.103When ESP32 works as a softAP, the station connected to it does not get the IP. How to
debug? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
4.10.104In ESP-IDF menucon󰝘g, after Component config > PHY > Max Wi-Fi TX
power(dBm) is con󰝘gured to adjust the Wi-Fi transmit power, what is the actual power?
For example, what is the actual maximum transmit power when the option is con󰝘gured to
17 dBm? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
4.10.105ESP-IDF currently supports connecting to Chinese SSID routers with UTF-8 encoding. Is
there a way to connect to Chinese SSID routers with GB2312 encoding?
. . . . . . . . . . 147
4.10.106After connecting to the router, ESP32 consumes much power in an idle state, with an
average current of about 60 mA. How to troubleshoot the issue? . . . . . . . . . . . . . . 147
4.10.107How to con󰝘gure the Wi-Fi country code when the ESP end product needs to be sold
worldwide? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
4.10.108Sometimes the rate drops or even a disconnection occurs after a period of iperf testing.
What is the reason and how to solve it? . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
4.10.109Why is this log frequently printed when the phone connects to the ESP32-S3 that works as
the Wi-Fi AP based on the ESP-IDF v5.0 SDK? . . . . . . . . . . . . . . . . . . . . . . 148
4.10.110Does ESP32 support the coexistence of the network port (LAN8720) and Wi-Fi (Wi󰝘-AP)?149
4.10.111How can I optimize ESP32’s slow IP address acquisition after Wi-Fi is connected in a
weak network environment or interference environment? . . . . . . . . . . . . . . . . . . 149
4.10.112When ESP32/ESP32-S2/ESP32-S3 series chips work in SoftAP mode, they are suscep-
tible to disconnect from mobile phones and PCs of other manufacturers when they are
communicating with each other. How can I optimize this situation? . . . . . . . . . . . . 149
4.10.113What is the value range of ESP32 Wi-Fi TX power? . . . . . . . . . . . . . . . . . . . . 149
4.10.114How do I get Wi-Fi RSSI when using ESP32? . . . . . . . . . . . . . . . . . . . . . . . 149
4.10.115Does ESP32 support WPA3-Enterprise? . . . . . . . . . . . . . . . . . . . . . . . . . . 150
4.10.116Does ESP modules support WAPI (Wireless LAN Authentication and Privacy Infrastructure)?150
4.10.117How can I increase the time for scanning routers when using ESP32 as the Wi-Fi Station
to connect routers? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
4.10.118Does ESP32 support LDPC？ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
5 Hardware related 151
5.1 Chip Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
5.1.1 What is the di󰝗erence between ESP32 with a single core and ESP32 with dual cores re-
garding programming method, feature performance, power consumption, and so on? . . . 151
5.1.2 What’s the di󰝗erence between ESP32 v3.0 and previous chip revisions in software and
hardware? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
5.1.3 Can the GPIO34 ~ GPIO39 of ESP32 only be set to input mode? . . . . . . . . . . . . . 152
5.1.4 Does ESP32 support a driver for Linux? . . . . . . . . . . . . . . . . . . . . . . . . . . 152
5.1.5 What is the meaning of the acquired data when you scan the data matrix on the module’s
shielding case? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
5.1.6 Can VDD3P3_RTC of ESP32 support independent battery power supply? . . . . . . . . . 152
5.1.7 What is the di󰝗erence between ESP32-PICO-D4, ESP32-PICO-V3, and ESP32-PICO-
V3-02? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
5.1.8 Does ESP8266 support 32 MHz crystal? . . . . . . . . . . . . . . . . . . . . . . . . . . 152
5.1.9 Do ESP products support Zephyr? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
5.1.10 How to identify the chip revision from the chip silk marking? . . . . . . . . . . . . . . . 153
5.2 Development board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
5.2.1 How long does it take for the ESP-WROOM-02D module to restart after the reset signal? . 154
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