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Espressif is a public multinational, semiconductor company established in 2008, with offices in China, the Czech Republic, India, Singapore and Brazil. Focused on developing wireless communication, low-power AIoT solutions. Creating the popular ESP8266, ESP32, ESP32-S, ESP32-C and ESP32-H series of chips, modules and development boards.
Espressif supports a large variety of open-source projects, including SDKs, components, libraries, solutions, and tools, which aim to help developers bring their projects to life. Espressif’s chips, modules and development boards are widely deployed in products as home appliances, light bulbs, smart speakers, consumer electronics and payment terminals.
What is the difference between secure boot v1 and boot v2?
What is the difference between secure boot v1 and boot v2?
Read lessWhat is the meaning of the ” SW_CPU_RESET” log when using ESP32?
What is the meaning of the ” SW_CPU_RESET” log when using ESP32?
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“SW_CPU_RESET” is the software reset log. For example, calling the “esp_restart()” API will print this log.
“SW_CPU_RESET” is the software reset log. For example, calling the “esp_restart()” API will print this log.
See lessWe will use a ESP32-C3FH4 in a project. We will not have a external flash. Is it possible to use all GPIO’s including the ones dedicated to flash SPI as plane I/O’s?
We will use a ESP32-C3FH4 in a project. We will not have a external flash. Is it possible to use all GPIO’s including the ones dedicated to flash SPI as plane I/O’s?
Read lessNo. Internal flash still occupies some GPIOs.
No. Internal flash still occupies some GPIOs.
See lessWe are facing an issue while connecting the ESP32 device with the Android mobile using ESP32 Wifi. We have tried to connect the mobile device and ESP32 manually by using ESP32’s SSID and password. It seems to be, when the ...Read more
We are facing an issue while connecting the ESP32 device with the Android mobile using ESP32 Wifi. We have tried to connect the mobile device and ESP32 manually by using ESP32’s SSID and password. It seems to be, when the ESP32 signal strength is good/excellent then the android mobile get connects to the ESP32.
And when the ESP32 signal strength is poor then the android mobile not connects to the ESP32. We have tested the issue on various android device version (6.0, 6.0.1,7.0, 8.0, 8.1 etc.) But, it sometimes works or sometimes may not work due to the poor ESP32 signals.
Can anyone please let us know the behavior of the ESP32 is correct?
Read lessAre you setting ESP32 in AP mode, and the trying to connect your smart phone with the ESP32 SoftAP ? 2 meters shouldn't get the signal poor like that. Can you read the RSSI from the phones ? Which hardware are you using? Could it be that the antenna is missing ?
Are you setting ESP32 in AP mode, and the trying to connect your smart phone with the ESP32 SoftAP ?
2 meters shouldn’t get the signal poor like that.
Can you read the RSSI from the phones ?
Which hardware are you using?
Could it be that the antenna is missing ?
I have an Espressif ESP32 running a lighting circuit. When I switch the circuit on the ESP gets power and the ESP is programmed to switch on a relay (connected to a light) in the setup routine. The relay switch-on ...Read more
I have an Espressif ESP32 running a lighting circuit.
When I switch the circuit on the ESP gets power and the ESP is programmed to switch on a relay (connected to a light) in the setup routine.
The relay switch-on is practically the first command after initializing the GPIO pins in the setup routine.
My problem is that on some occasions the relay switches on within 500ms of the circuit being powered (which is acceptable) and other times there is a delay of about 20-30 seconds before the relay is activated.
What would cause this and how can I fix it?
Does Espressif ESP32 perform domain name resolution each time it connects to the server?
Does Espressif ESP32 perform domain name resolution each time it connects to the server?
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Hi, The domain name is resolved via DNS within the stack, and the resolved data will be cached within the specified time. The cache time is based on the TTL data obtained from the DNS server, which is a parameter filled when configuring the domain name, usually 10 minutes.
Hi,
The domain name is resolved via DNS within the stack, and the resolved data will be cached within the specified time. The cache time is based on the TTL data obtained from the DNS server, which is a parameter filled when configuring the domain name, usually 10 minutes.
See lessHow many devices is Espressif ESP32 able to connect in AP mode?
How many devices is Espressif ESP32 able to connect in AP mode?
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Up to 10 devices in AP mode. It is configured to support four devices by default.
Up to 10 devices in AP mode. It is configured to support four devices by default.
See lessHow does Espressif ESP32 adjust Wi-Fi TX power?
How does Espressif ESP32 adjust Wi-Fi TX power?
Read lessConfigure Component config -> PHY -> Max Wi-Fi TX power(dBm) via menuconfig, and the max value is 20 dB. Use API esp_err_t esp_wifi_set_max_tx_power(int8_t power);.
Configure Component config -> PHY -> Max Wi-Fi TX power(dBm) via menuconfig, and the max value is 20 dB. Use API esp_err_t esp_wifi_set_max_tx_power(int8_t power);.
See lessDo ESP8266/ESP32/ESP32-S2 support Web/Soft AP provisioning?
Do ESP8266/ESP32/ESP32-S2 support Web/Soft AP provisioning?
Read lessYes. For ESP8266, please refer to example ESP8266 softap_prov. For ESP32/ESP32-S2, please refer to example ESP32/ESP32-S2 wifi_prov_mgr.
Yes. For ESP8266, please refer to example ESP8266 softap_prov. For ESP32/ESP32-S2, please refer to example ESP32/ESP32-S2 wifi_prov_mgr.
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Secure boot v1 is recommended for earlier versions than ESP32 ECO3，and secure boot v2 is recommended for ESP32 ECO3 and later versions, ESP32-C3, ESP32-S2, and ESP32-S3. Compared with secure boot v1, secure boot v2 has the following improvements which are: The bootloader and app use the same signatuRead more
Secure boot v1 is recommended for earlier versions than ESP32 ECO3，and secure boot v2 is recommended for ESP32 ECO3 and later versions, ESP32-C3, ESP32-S2, and ESP32-S3.
Compared with secure boot v1, secure boot v2 has the following improvements which are:
The bootloader and app use the same signature format. The bootloader and app use the same signing key.
See less