Hi, I have two older ESP32 development boards with versions of the ESP32 chip that are at least two years old. One version of the board is an older Sparkfun ESP32 Thing board and another an ESP32-WROOM module based HiLetGo board. I'm able to successfully load the "ESP32_RF_TEST_BIN_V1.5.0_20190812.b...

Hi, We are working on a design and the ESP32 will be co-located with several other radios. Under the FCC's requirements, we'll need to conduct a seperate certification on the ESP 32. We need to be able to send a continuously modulated transmission off the Wi-Fi & BLE radios across the low / middle /...

I'll confirm that using the Windows COM notation fixed this error vs. the Linux port notation.

I changed the project menuconfig to the COM notation and the HelloWorld flashed and ran correctly on the monitor.

Thanks for clearing that up! I am trying to get a custom board fabricated, hoping to get it all right in the first pass!

Thanks. I see MTDI has an internal pull down, which means VDD_SDIO is at 3.3V.

Does that mean for the ESP32-DWD, I need a pull up on MTDI so the IC sets the LDO for 1.8V?

Now I am making myself more paranoid. If I supply 3.3V to VDD3P3_RTC, will that cause an error with the internal flash? There is another sentence that "VDD_SIO is 1.8V OR THE SAME VOLTAGE as VDD3PE_RTC" -- is that defined by a register or does VDD_SDIO take the voltage of VDD3PE_RTC? Is the internal...

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I was looking at the Sparkfun ESP32 schematic. (Been a very good reference). They supply a 3.3V power source, and use a 0.1uF decoupling capacitor to VDD3P3_RTC. Seems like VDD3P3_RTC is a 3.3V input to power the RTC. Makes sense. I'm not really sure, what the datasheet means when it says to tie VDD...

Okay, I'm confused now. I'm just going off what the datasheet says... I'm using the D2WD, so I was going to leave VDD_SDIO floating. I understand VDD_SDIO is a 1.8V power rail, right? Is VDD3P3_RTC a power rail, or a power input for the RTC? The datasheet says to tie VDD_SDIO to VDD3P3_RTC to turn o...

I'll check that out. I was going to use a Taiwanese LDO if I go that route. Do you know if you could go as low as 300mA? I keep reading officially 500mA, but read anecdotes of 300mA...