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vikas Nagpal
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vikas Nagpal
Asked: September 13, 2022In:
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I would like to know if it was possible ever to keep connected the micro usb of the esp32- cam- mb to load the module and in the meantime check the consumption( Ampere) from a multimeter. I tried to connect the multimeter in any way but failed Thanks

I would like to know if it was possible ever to keep connected the micro usb of the esp32- cam- mb to load the module and in the meantime check the consumption( Ampere) from a multimeter.

I tried to connect the multimeter in any way but failed
Thanks

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esp32esp32-cam-mbmodulemultimeter
  1. ashishgawade

    Sure. Take a USB lead, cut off the external isolation, find the red wire, cut it in two, and connect the multimeter in between. Make sure the internal resistance/ burden voltage of your multimeter isn't too high if the voltage drop of the multimeter is too high, your ESP32 may brown out. ( You can tRead more

    Sure. Take a USB lead, cut off the external isolation, find the red wire, cut it in two, and connect the multimeter in between. Make sure the internal resistance/ burden voltage of your multimeter isn’t too high if the voltage drop of the multimeter is too high, your ESP32 may brown out. ( You can try switching to the 10A range when you suppose that happens.)

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vsharma
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vsharma
Asked: August 22, 2022In:
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How we’re implemented SPI poling in ESP32- S2- WROOM module. But now I need to apply SPI DMA for Transmit and admit. is ESP32- S2- WROOM module supports SPI DMA? actually we searched in github, I find SPI DMA stack ...Read more

How we’re implemented SPI poling in ESP32- S2- WROOM module. But now I need to apply SPI DMA for Transmit and admit.
is ESP32- S2- WROOM module supports SPI DMA?
actually we searched in github, I find SPI DMA stack but in that no DMA related functions.

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dmaesp32moduletransmit
  1. Techworld

    Given that you're using the ESP-IDF SPI driver and assign a DMA channel to the host driver when initializing it, you're already using DMA. The driver will use DMA for data transfers automatically.

    Given that you’re using the ESP-IDF SPI driver and assign a DMA channel to the host driver when initializing it, you’re already using DMA. The driver will use DMA for data transfers automatically.
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Anonymous
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Anonymous
Asked: May 27, 2022In:
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When two LoRa modules cannot communicate with each other, what are the steps for failure detection?

When two LoRa modules cannot communicate with each other, what are the steps for failure detection?

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communicationconnectivity issueloramodulerenesas
  1. nakhtar

    Hi, First check whether the SPI communication is successful, the successful sign is that the version value of the read chip is 0x12, the DIO0 pin is responsible for notifying the MCU that the reception is completed and check whether the DIO0 pin configuration is normal. The configuration parametersRead more

    Hi,

    First check whether the SPI communication is successful, the successful sign is that the version value of the read chip is 0x12, the DIO0 pin is responsible for notifying the MCU that the reception is completed and check whether the DIO0 pin configuration is normal. The configuration parameters of LoRa should be consistent, including frequency, spreading factor, bandwidth, coding rate, preamble length, frequency hopping enable, syncword, and low-rate optimization; if one of the above parameters is different, communication cannot be performed.

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