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Home/wifi

Tag: wifi

Questions on the implementation of Wi-Fi (802.11) hardware. Note shopping questions are off-topic.

volt.tech Latest Questions

vikas Nagpal
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vikas Nagpal
Asked: December 28, 2022In: Wireless Connectivity

ESP32-C3 Firmware Update?

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Hello, I presently research and suppose about the possibilities to initial flash and later update the firmware on an ESP32 based product from the price point, I would like to use an ESP32-C3 and the built-in USB port to flash & ...Read more

Hello,

I presently research and suppose about the possibilities to initial flash and later update the firmware on an ESP32 based product from the price point, I would like to use an ESP32-C3 and the built-in USB port to flash & update the firmware.
That indeed would save the USB2UART chip.
I can’t go with the S2 as I need WiFi and Bluetooth.

But I didn’t find any tutorial/extended info if/how this is possible. The only things I found

  • DFU — Using the native USB on ESP32-S2 for flashing the firmware
  • Nearly was mentioned that C3 USB can be used in CDC mode
  • CircuitPython on Espressif SoCs

so I currently don’t know if it’s possible. I hope anybody can shine some light on this for me;-)

Thank and Regards

Vikas

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bluetoothesp32espressiffirmwareusbusb2uartwifi
  1. ashishgawade
    Added an answer on December 29, 2022 at 10:19 am

    Hello, Thanks for reaching out to Volt Engineering Community. The C3 has a USB device that effectively replaces an external USB- serial and USB- JTAG chip; you should be suitable to use that to flash updates. Please let us know if it answers your question. Regards, Ashish

    Hello,

    Thanks for reaching out to Volt Engineering Community.

    The C3 has a USB device that effectively replaces an external USB- serial and USB- JTAG chip; you should be suitable to use that to flash updates.

    Please let us know if it answers your question.

    Regards,

    Ashish

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  • 1 Answer
Answer
nidhi singh
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nidhi singh
Asked: October 14, 2022In: Wireless Connectivity

ESP32-S3 Current Consumption with Radio Disabled

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Hello, I want to use ESP32- S3 for a device that makes no use of WiFi announcement Bluetooth, so I will keep them disabled. My question is what would be the expected current draw with the radio disabled? Trying to figure ...Read more

Hello,

I want to use ESP32- S3 for a device that makes no use of WiFi announcement Bluetooth, so I will keep them disabled. My question is what would be the expected current draw with the radio disabled? Trying to figure out my power supply conditions.

Thanks

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esp32esp32-s3powerradiowifi
  1. Alex thomas
    Added an answer on October 17, 2022 at 9:44 am

    Hi, You can find this information in the ESP32- S3 datasheet, Table 4- 9" Current Consumption in Modem- sleep Mode".( Modem- sleep mode is the mode where the radios( modems) are turned off. That is your case.) The numbers range from 13mA to 107mA, depending on the CPU frequence, which peripherals arRead more

    Hi,

    You can find this information in the ESP32- S3 datasheet, Table 4- 9″ Current Consumption in Modem- sleep Mode”.( Modem- sleep mode is the mode where the radios( modems) are turned off. That is your case.)
    The numbers range from 13mA to 107mA, depending on the CPU frequence, which peripherals are enabled, and what the CPUs are doing. For example, if the CPU frequency is 80 MHz and both cores are running, the current consumption would be in the range of 33 to 47 mA.

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  • 1 Answer
Answer
vikas Nagpal
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vikas Nagpal
Asked: September 8, 2022In: Wireless Connectivity

Difference Between WiFi and WLAN?

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What’s the difference between WiFi and WLAN?

What’s the difference between WiFi and WLAN?

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frequencyradiowifiwlan
  1. Vipul Verma
    Added an answer on September 8, 2022 at 12:36 pm

    1. WLAN is a type of computer network in a relatively small area that dismisses the use of physical means of inter-connectivity. 2. WI-FI is a trademark name to brand devices compliant to IEEE 802.11 standards. 3. Devices in a WLAN essentially use WI-FI branded products. 4. A WI-FI ready device simpRead more

    1. WLAN is a type of computer network in a relatively small area that dismisses the use of physical means of inter-connectivity.

    2. WI-FI is a trademark name to brand devices compliant to IEEE 802.11 standards.

    3. Devices in a WLAN essentially use WI-FI branded products.

    4. A WI-FI ready device simply means that it is ready for network operation within a WLAN.

     

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Answer
vikas Nagpal
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vikas Nagpal
Asked: August 29, 2022In: Wireless Connectivity

How to Connect OTA through GSM

  • 0

Hello, I’ve enforced OTA on ESP32 through WiFi by setting up server on ESP32, and likewise through WiFi by using http. Now I want to do OTA with http but through GSM network. I’ve enforced ESP32 SIM800L module communication to the pall, ...Read more

Hello,
I’ve enforced OTA on ESP32 through WiFi by setting up server on ESP32, and likewise through WiFi by using http.

Now I want to do OTA with http but through GSM network.

I’ve enforced ESP32 SIM800L module communication to the pall, so my GSM connection is good.

Can any bone please let me know of an illustration for OTA on ESP32 through GSM?

Thankyou.

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esp32gsmotasim800lwifi
  1. Alex thomas
    Added an answer on September 1, 2022 at 2:34 pm

    There's no difference between doing it through GSM or wifi or ethernet, any http functions including OTA will just use whatever interface is configured. You should just have to run esp_https_ota( & config) nearly in your app and it'll work.

    There’s no difference between doing it through GSM or wifi or ethernet, any http functions including OTA will just use whatever interface is configured.
    You should just have to run esp_https_ota( & config) nearly in your app and it’ll work.

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Answer
vsharma
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vsharma
Asked: July 30, 2022In: Wireless Connectivity

PSoC interfacing with WiFi module over SPI

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How to interface a PSoC (e.g. PSoC 63) with a WiFi module (e.g. CY43439)? Is this WiFi-host-driver agnostic to the hardware interface like SPI or SDIO?

How to interface a PSoC (e.g. PSoC 63) with a WiFi module (e.g. CY43439)?

Is this WiFi-host-driver agnostic to the hardware interface like SPI or SDIO?

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psocsdiospiwifi
  1. pallavi sharma
    Added an answer on August 1, 2022 at 2:29 pm

    For the wifi chip that you want to use, driver should have the support or implementation of the interface that you need. For 43439, both the SDIO and SPI interfaces are supported between host and WLAN chip in WHD.

    For the wifi chip that you want to use, driver should have the support or implementation of the interface that you need. For 43439, both the SDIO and SPI interfaces are supported between host and WLAN chip in WHD.

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Answer
techfreak
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techfreak
Asked: June 24, 2022In: Wireless Connectivity

Facing issue while connecting EspressifESP32 with Android mobile using EspressifESP32 Wifi.

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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 ...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?

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androidesp32espressifwifi
  1. pallavi sharma
    Added an answer on July 29, 2022 at 5:16 pm

    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 ?

    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 ?

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Answer
Anonymous
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Anonymous
Asked: May 17, 2022In: Wireless Connectivity

How to adjust ESP32 Wi-Fi TX power?

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How does Espressif ESP32 adjust Wi-Fi TX power?

How does Espressif ESP32 adjust Wi-Fi TX power?

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esp32espressiftx powerwifi
  1. nakhtar
    Added an answer on May 17, 2022 at 5:41 pm

    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);.

    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);.

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Answer
Anonymous
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Anonymous
Asked: May 17, 2022In: Wireless Connectivity

Maximum value of ESP32 Wi-Fi RF power

  • 0

What is the maximum value of ESP32 Wi-Fi RF power?

What is the maximum value of ESP32 Wi-Fi RF power?

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espesp32espressifrf powerwifi
  1. nakhtar
    Added an answer on May 17, 2022 at 5:40 pm

    The RF power of ESP32 is 20 dB, which is exactly the maximum value.

    The RF power of ESP32 is 20 dB, which is exactly the maximum value.

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Answer
k.msood
  • 0
k.msood
Asked: May 17, 2022In: Wireless Connectivity

Downloading file in FTP server issue in ESP32 WROOM32D.

  • 0

In ESP32WROOM32D using FTP API to download and upload files. While downloading the file from FTP server “wifi:bcn timeout,ap_probe_send_start” is coming.

In ESP32WROOM32D using FTP API to download and upload files. While downloading the file from FTP server “wifi:bcn timeout,ap_probe_send_start” is coming.

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esp32esp32-wroom-32despressifftp apiftp serverwifi
  1. nakhtar
    Added an answer on May 17, 2022 at 1:04 pm

    Hi, Regarding your issue release heap memory.

    Hi,

    Regarding your issue release heap memory.

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  • 2 Answers
Answer
Jo Abdaal
  • 1
Jo Abdaal
Asked: March 24, 2022In: Wireless Connectivity

Maximum Number of Node Layers in ESP32 WiFi-Mesh

  • 1

What is the maximum number of node layers allowed in ESP32 Wi-Fi Mesh?

What is the maximum number of node layers allowed in ESP32 Wi-Fi Mesh?

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esp32espressifwifi
  1. nakhtar
    Added an answer on March 24, 2022 at 1:25 pm

    Hi, In ESP32 WiFi Mesh for tree topology structure, the max number is 25 and for chain topology structure, the max number is 1000.

    Hi,
    In ESP32 WiFi Mesh for tree topology structure, the max number is 25 and
    for chain topology structure, the max number is 1000.

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