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Home/Wireless Connectivity

Category: Wireless Connectivity

A Wireless Connectivity is a computer network that uses wireless data connections between network nodes. Wireless networking is a method by which homes, telecommunications networks and business installations avoid the expensive process of introducing lines into a structure, or as a connection between various equipment locations. Examples of wireless networks include cell phone networks, wireless local area networks( WLANs), wireless sensor networks, satellite communication networks, and terrestrial microwave networks.

volt.tech Latest Questions

nidhi singh
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nidhi singh
Asked: January 24, 2023In: Wireless Connectivity

ESP32- CAM What’s the Max Capacity of the MicroSD Card?

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Hi, I would want to see what’s the maximum capacity of the MicroSD card to stay completely compatible with the ESP- 32 CAM specifications 32 Gb. further than 32Gb? Thank you for your answer, Nidhi Singh

Hi,

I would want to see what’s the maximum capacity of the MicroSD card to stay completely compatible with the ESP- 32 CAM specifications 32 Gb. further than 32Gb?

Thank you for your answer,
Nidhi Singh

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32gbcamcardesp32espressifmicrosd
  • 0 Answers
Answer
ashishgawade
  • 0
ashishgawade
Asked: January 12, 2023In: Wireless Connectivity

How to Check EMC in Test Mode for the Certification Process?

  • 0

Hi We’ve to get our hardware certified in a number of different countries. And to meet the certification process the ESP software will need to configure our hardware to different functional countries as there are a number of software-controlled DC/ DC ...Read more

Hi

We’ve to get our hardware certified in a number of different countries. And to meet the certification process the ESP software will need to configure our hardware to different functional countries as there are a number of software-controlled DC/ DC inventories on the hardware.

The challenge is that Espressif just supplies the FCC test software as a binary. I’ve communicated with Espressif to know if I can get the source code or in the binary library so that I can incorporate it into our test code, and they replied that won’t supply the code.

Does anyone know how to put the ESP32 into the needed modes for the certification process?

Regards

Read less
certificationemcespesp32espressiffccsoftware
  1. Alex thomas
    Added an answer on January 17, 2023 at 10:26 am

    Hi, Do all possible noise sources have to be enabled during purposeful radiator testing or just those directly coupled to the antenna? Obviously, there is some possibility of dealings between purposeful and unintentional radiator sources. This is how we get stuff like FCC complete modular instrumentRead more

    Hi, Do all possible noise sources have to be enabled during purposeful radiator testing or just those directly coupled to the antenna? Obviously, there is some possibility of dealings between purposeful and unintentional radiator sources. This is how we get stuff like FCC complete modular instrument taking rf shielding and internal regulation. The unintentional radiator sources would be tested independently with purposeful radiators powered off. This may be different from other official authorities.

    Obviously, espressif should give some support similar to allowing gpio control or Lua/upython scripting in the test binary or releasing a library that can be incorporated into IDF designs. perhaps too important fear of CW mode being turned into a jammer? At least it should be available under NDA and usage agreement.

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Answer
Anonymous
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Anonymous
Asked: December 30, 2022In: Wireless Connectivity

ESP32-U4WDH and VDD_SDIO power

  • 0

Hi, I got a question that seems not easily answered in the HW documentation. ESP32-U4WDH which has an internal flash, does VDD_SDIO power needs to be connected at all? If so, shall it be connected to 100nF or VCC which is ...Read more

Hi,
I got a question that seems not easily answered in the HW documentation.

ESP32-U4WDH which has an internal flash, does VDD_SDIO power needs to be connected at all?
If so, shall it be connected to 100nF or VCC which is 3v3?

Thanks for your inputs

Read less
espesp32flashU4WDHuartusb
  1. vikas Nagpal
    Added an answer on January 6, 2023 at 9:50 am

    Hello, To run internal flash in ESP32-U4WDH You'd need to connect it to a 100nF capacitor. Thank & Regards

    Hello,

    To run internal flash in ESP32–U4WDH You’d need to connect it to a 100nF capacitor.

    Thank & Regards

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  • 1 Answer
Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: December 28, 2022In: Wireless Connectivity

ESP32-C3 Firmware Update?

  • 0

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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Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: December 23, 2022In: Wireless Connectivity

ESP32 PCB Antenna Design?

  • 0

Hello, I was searching for a PCB antenna design for ESP32. In the hardware design guideline document, it states to follow Espressif’s Type-B antenna, but I couldn’t find it. Any leads or advice to design the PCB antenna is highly appreciated. ESP32 ...Read more

Hello,

I was searching for a PCB antenna design for ESP32. In the hardware design guideline document, it states to follow Espressif’s Type-B antenna, but I couldn’t find it. Any leads or advice to design the PCB antenna is highly appreciated.

ESP32 Hardware Design Guideline document – https://www.espressif.com/sites/default … nes_en.pdf

Page 13 second para

Thanks in advance!

Read less
antennaespesp32espressif’spcb
  1. nidhi singh
    Added an answer on December 24, 2022 at 11:25 am

    Hi Vikas, you can download the modules' reference designs from www.espressif.com/en/support/download/documents, ESP32- WROOM- 32D and ESP32- WROVER- B have the latest antenna designs. You may also directly use modules unless you have reasons for designing your own layout.

    Hi Vikas, you can download the modules’ reference designs from http://www.espressif.com/en/support/download/documents, ESP32- WROOM- 32D and ESP32- WROVER- B have the latest antenna designs. You may also directly use modules unless you have reasons for designing your own layout.

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  • 1 Answer
Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: December 21, 2022In: Wireless Connectivity

OTA_Using_HTTPS and OTA_Using_MQTT Failed to Make Using MTB3.0?

  • 0

Hello, I am unable to make the examples”OTA_Using_HTTPS” and”OTA_Using_MQTT” using MTB3.0. I’ve tried BSP” CY8CPROTO-062-4343W” and” CY8CEVAL- 062S2- LAI- 4373M2″. The error happens during the linking step. ModuleNotFoundError: No module named cryptography.hazmat.primitives.asymmetric.ed25519′ There were also some compile warnings. Please find attached ...Read more

Hello, I am unable to make the examples”OTA_Using_HTTPS” and”OTA_Using_MQTT” using MTB3.0. I’ve tried BSP” CY8CPROTO-062-4343W” and” CY8CEVAL- 062S2- LAI- 4373M2″. The error happens during the linking step.
ModuleNotFoundError: No module named cryptography.hazmat.primitives.asymmetric.ed25519′

There were also some compile warnings. Please find attached the logs.
Thank you!

Read less
mtb3.0ota_using_httpsota_using_mqtt
  1. ashishgawade
    Added an answer on December 22, 2022 at 10:04 am
    This answer was edited.

    Hi, I was suitable to make the CEs after doing some changes. The reason for these makes errors is that python3 installed on your machine does not have the required packages or has an older version of a package. You can follow the below steps to avoid errors and make it successful. 1. First, visit thRead more

    Hi,

    I was suitable to make the CEs after doing some changes. The reason for these makes errors is that python3 installed on your machine does not have the required packages or has an older version of a package. You can follow the below steps to avoid errors and make it successful.

    1. First, visit the below link, copy the contents and paste them into a created txt file named “requirements.txt” on your Linux machine.

    (https//github.com/mcu-tools/mcuboot/blob/main/scripts/requirements.txt)

    2. Run the below cmd on your terminal to update the cryptography package. However, you need to update pip first and also update cryptography, If you get any error in this step. If the python version is 3.6 or older, you’ll get the “CryptographyDeprecationWarning” error. So, install python newer than the 3.6 version

    Updating pip- (python3-m pip install-upgrade pip)

    Updating cryptography- (python3-m pip install-upgrade cryptography)

    3. Install cbor package, if you do not have it already.

    (python3- m pip install cbor)

    4. Do “cd” to the path where the “requirements.txt” file is present and run the below cmd. You should get the “Requirement already satisfied” msg and install the “intel hex”, and “cbor2” packages if you do not have them already.

    (python3-m pip install-rrequirements.txt)

    5. Now, you can open MTB IDE and hopefully make CE without any errors.

    Thanks

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  • 1 Answer
Answer
nidhi singh
  • 0
nidhi singh
Asked: December 19, 2022In: Wireless Connectivity

ESP32- C3 Mini Devkit Configure for Built in USB JTAG?

  • 0

Hello and thanks in advance for the help. I recently entered my ESP32- C3 mini development kit. I’m sure it’s configured to use the CP2102 USB interface, so R1 and R4 are installed. I want to use the internal USB JTAG ...Read more

Hello and thanks in advance for the help.

I recently entered my ESP32- C3 mini development kit. I’m sure it’s configured to use the CP2102 USB interface, so R1 and R4 are installed. I want to use the internal USB JTAG interface which I understand requires the removal of R1 and R4 and the installation of R2 and R3( though I’m not sure this is the case). This would also free up RXD and TXD, which I need to use.

I haven’t been suitable to find documentation on how to use the Devkits with the USB JTAG, nor have I been suitable to determine the position of R1, R2, R3, and R4. I’ve tried” beeping out” the circuit but would prefer not to ruin my board.

Is there any guidance as to where those components are and/ or how to use a USB JTAG?

Read less
c3minidevkitesp32jtagusb
  1. Alex thomas
    Added an answer on December 20, 2022 at 11:49 am

    The PCB layout of that dev board can be found then. As far as I can see, you need to rotate those resistors 90 degrees to move them from the red to the green position in this image: You probably also want to disconnect the RxD/TxD pins from the CP2104 to the ESP32C3 if you want to use those pins. YoRead more

    The PCB layout of that dev board can be found then. As far as I can see, you need to rotate those resistors 90 degrees to move them from the red to the green position in this image:

    You probably also want to disconnect the RxD/TxD pins from the CP2104 to the ESP32C3 if you want to use those pins. You can do that by removing R21/R22, I marked those in blue.

    The built-in USB thing should more or less work as an extra UART inside the ESP32C3 and as a general CDC- ACM serial port(=no drivers needed) on the PC side. You do need to use the latest master of ESP-IDF to get full support for it, and if you specifically want to select the device as your press output UART in menuconfig, else, your debug messages will go to UART0.

    On the JTAG side, just useesp_usb_jtag. cfg as your JTAG adapter, config file in OpenOCD and you should be good.
    Still, feel free to post it here, If you need any further help. Support for the built-in USB-to-JTAG thing on the C3 is enough new, so I’d be interested in seeing how you fare with it.

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Alex thomas
  • 0
Alex thomas
Asked: December 10, 2022In: Wireless Connectivity

How to Power ESP32 Devkitc v4 Module from Regulated 5v?

  • 0

Hello, I’ve lipo battery connected to tp4056 (with protection), and it’s connected to a 5v output boost module. How can I connect it to the board? And also can I have a USB connection to the board without burning the ...Read more

Hello, I’ve lipo battery connected to tp4056 (with protection), and it’s connected to a 5v output boost module. How can I connect it to the board? And also can I have a USB connection to the board without burning the module?

Read less
devkitcesp32lipomoduletp4056usb
  1. nidhi singh
    Added an answer on December 14, 2022 at 10:17 am

    Hii, From boost converter (u really do not need it but anyway.) to ESP32- wroom 5v pin (from photo bottom left pin) and from charge- to GND (ANY OF THEM). Can connect a USB to the ESP32 WROOM directly (with this connection in place, no need to disconnect) and flash any firmware you want, also disconRead more

    Hii, From boost converter (u really do not need it but anyway.) to ESP32- wroom 5v pin (from photo bottom left pin) and from charge- to GND (ANY OF THEM).

    Can connect a USB to the ESP32 WROOM directly (with this connection in place, no need to disconnect) and flash any firmware you want, also disconnect the USB, and if the battery is full and it’ll work.
    Can also connect a USB to the TP4056 for charging WHILE it feeds the ESP32.

    You really do not need the Boost since the TP4056 will output3.7 v and you have a 1000mah (milli amps hour) battery which will allow the ESP32 to work for a good while (depending on what u are doing etc) before recharging. In this configuration just connect the OUT to3.3 v (top left) and OUT- to any GND pin.
    But u will need a USB connection to load any firmware and later disconnect it and let the battery feed the ESP32.

    Enjoy.

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ashishgawade
  • 0
ashishgawade
Asked: December 8, 2022In: Wireless Connectivity

How to use both UART and SPI FLASH boot?

  • 0

Hello, I need to use both UART and SPI interface, FX3’s SPI interface and UART interface are shared, now my SPI is connected to FLASH, I need to power on through SPI FLASH, so I can not use its UART ...Read more

Hello, I need to use both UART and SPI interface, FX3’s SPI interface and UART interface are shared, now my SPI is connected to FLASH, I need to power on through SPI FLASH, so I can not use its UART function, but FX3 has” 16- bit data bus UART SPI I2S” mode. In this mode, UART is mapped to GPIO46-49. Can I use the following settings to enable me to use both UART and SPI FLASH BOOT?

io_cfg.isDQ32Bit = CyFalse;

io_cfg.s0Mode = CY_U3P_SPORT_INACTIVE;
io_cfg.s1Mode = CY_U3P_SPORT_INACTIVE;
io_cfg.useUart = CyTrue;
io_cfg.useI2C = CyFalse;
io_cfg.useI2S = CyFalse;
io_cfg.useSpi = CyTure;
io_cfg.lppMode = CY_U3P_IO_MATRIX_LPP_DEFAULT;
/* No GPIOs are enabled. */
io_cfg.gpioSimpleEn[0] = 0;
io_cfg.gpioSimpleEn[1] = 0x08000000;
io_cfg.gpioComplexEn[0] = 0;
io_cfg.gpioComplexEn[1] = 0;

And, can I still use the virtual COM port function of the UART in this mode?

Read less
bootflashfx3gpio46spiuart
  1. vikas Nagpal
    Added an answer on December 10, 2022 at 10:27 am

    Hi, You can use the" 16- bit Data Bus UART SPI I2S" configuration to use both UART and SPI. Please refer to the available GPIOs for that mode in Table 7 of the FX3 datasheet. As mentioned in the table, you must choose the proper GPIO if you want to use some GPIOs. If you want to use I2S GPIOs you haRead more

    Hi,

    You can use the” 16- bit Data Bus UART SPI I2S” configuration to use both UART and SPI. Please refer to the available GPIOs for that mode in Table 7 of the FX3 datasheet. As mentioned in the table, you must choose the proper GPIO if you want to use some GPIOs. If you want to use I2S GPIOs you have to override using CyU3PDeviceGpioOverride.

    Yes, the virtual COM port will work if you use the below configuration.

    Thanks

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Alex thomas
  • 0
Alex thomas
Asked: December 6, 2022In: Wireless Connectivity

ESP32-C3 MINI-1 Module Programming?

  • 0

Hi, I purchased a couple of ESP32- C3 mini modules for a design. The modules are being mounted on the PCB board, I tried to flash/ program them for the application using a customized board (simplified schematic of esp32- c3 ...Read more

Hi, I purchased a couple of ESP32- C3 mini modules for a design. The modules are being mounted on the PCB board, I tried to flash/ program them for the application using a customized board (simplified schematic of esp32- c3 dev- board). The issue is that the system is unable to communicate with the module. I also replaced the module on an esp32-c3-mini dev board with the purchased one but still facing the same issue with the flashing. The question is that

Whether the esp32- c3 modules, in the market, are needed to be pre-programmed prior to the flashing process?

How I can flash the modules?

Any help comment/ guide will be appreciated!

Best Regards,

Alex

Read less
boarddevesp32esp32c3minimodulespcb
  1. nidhi singh
    Added an answer on December 8, 2022 at 10:09 am

    Hello, I just spent quite a bit of time figuring out why I could not upload to my own boards, so I appreciate what you are experiencing. The ESP32- C3- Mini modules don't need to be preprogrammed. You can write firmware to them directly using esptool.py I programmed mine using the Arduino IDE, whichRead more

    Hello,

    I just spent quite a bit of time figuring out why I could not upload to my own boards, so I appreciate what you are experiencing.
    The ESP32- C3- Mini modules don’t need to be preprogrammed. You can write firmware to them directly using esptool.py
    I programmed mine using the Arduino IDE, which uses esptooly.py under the hood.
    Still, we might be suitable to help, If you share what your custom programming board looks like.

    Thank You & Regards

    Nidhi

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