Search found 4 matches

by dk2jk
Mon May 09, 2022 9:44 pm
Forum: ESP32 boards
Topic: Can't flash an ESP32-S2
Replies: 18
Views: 7616

Re: Can't flash an ESP32-S2

"You can recompile the firmware and cancel the USB option"

Sorry , it may be simple, but
how do you do that ?
with regards

Update: the problem is solved. With the newest binfile for esp32-s2 '
the serial port starts as expected. No compiling necessary...
by dk2jk
Sat Apr 23, 2022 9:30 am
Forum: ESP32 boards
Topic: Can't flash an ESP32-S2
Replies: 18
Views: 7616

Re: Can't flash an ESP32-S2

Hello, I have the same problem. Board is: ESP32-s2-soala-1 , chip esp32-s2-wrover. Flashing with Thonny seems to work: .../thonny/bin/python3.7 -u -m esptool --port /dev/ttyUSB0 write_flash --flash_mode keep --flash_size detect 0x1000 /home/dk2jk/Downloads/ESP32_S2_WROVER-20220117-v1.18.bin esptool....
by dk2jk
Sat Jun 19, 2021 8:22 am
Forum: Raspberry Pi microcontroller boards
Topic: RPi pico machine.SPI periodic dropout.
Replies: 19
Views: 9345

Re: RPi pico machine.SPI periodic dropout.

ref: https://forum.micropython.org/viewtopic.php?f=21&t=10642#p58809 When I change the statement for the square wave output from p17.value (dds.i> N / 2) # square wave output to p17.value (dds.i> N >> 1) # square wave output the PWM problems described are gone. It seems, that no problem occur, when ...
by dk2jk
Sun Jun 13, 2021 10:19 am
Forum: Raspberry Pi microcontroller boards
Topic: RPi pico machine.SPI periodic dropout.
Replies: 19
Views: 9345

Re: RPi pico machine.SPI periodic dropout.

Hello, I have a similar dropout effect with PWM generation. Board: Raspberry Pico Task: A sinusoidal signal is to be generated. Output takes place via a PWM plus Low-pass RC. The pulse width (duty) is changed step-by-step from a sine table. There should be a continuous signal. However, the output si...