ESP32 Forum

Posted: **Mon Aug 06, 2018 4:43 pm**

What is also strange: there is no voltage on pin 26.
I have MTDI pulled low by 10k resistor.
Programmer does see ESP32 but can't flash it.

Any ideas what could go wrong?

Posted: **Mon Aug 06, 2018 7:46 pm**

Do you have anything connected to gpio 6,7,8,11,16,17?

Posted: **Tue Aug 07, 2018 5:49 am**

No, this pins are not connected

: esp32.PNG (67.79 KiB) Viewed 5009 times

Posted: **Tue Aug 07, 2018 6:33 am**

Code: Select all

sergey@Ubuntu1:~/esp/esp-idf/examples/wifi/simple_wifi$ make -j16 flash monitor
Flashing binaries to serial port /dev/ttyUSB4 (app at offset 0x10000 )...
esptool.py v2.5.0
Serial port /dev/ttyUSB4
Connecting....
Chip is ESP32-PICO-D4 (revision 0)
Features: WiFi, BT, Dual Core, Embedded Flash
MAC: d8:a0:1d:40:f0:24
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Warning: Could not auto-detect Flash size (FlashID=0x0, SizeID=0x0), defaulting to 4MB
Compressed 24864 bytes to 14117...
Wrote 24864 bytes (14117 compressed) at 0x00001000 in 1.2 seconds (effective 159.5 kbit/s)...

A fatal error occurred: Timed out waiting for packet header
/home/sergey/esp/esp-idf/components/esptool_py/Makefile.projbuild:62: recipe for target 'flash' failed
make: *** [flash] Error 2

ESP32 Forum

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ESP-PICO-D4 doesn't see internal flash

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