Hi, I am currently reading through the ESP32 Reference Manual on the External Memory section. So, here is stated that ESP32 can access external SPI flash and SPI SRAM as external memory. Also the table of Address mapping (External memory) is shown. The next part is saying that 'When a CPU accesses e...

ESP-D0WDQ6

I don't plan on using the wifi/bl features so I didn't add neither an antenna, neither an external 40mhz clock.
I have decoupling caps on all 3v3 pins and 42uF + 10uF near vdd3p3 (pin 3 and 4).

I'm working on a custom board whose main processor is an ESP32. I hooked up the bare minimum I could think of to make the esp power on, but nothing seems to be sent on uart0. I have the 3.3v pins (vdda, vdd3p3, vdd3p3_rtc, vdd3p3_cpu), gnd, chip_pu with an external 10k pull-up and u0tx hooked up to ...