Search found 9 matches

by propeller
Mon Aug 24, 2020 7:35 am
Forum: ESP32 boards
Topic: How to reset cycled ESP32? "Device or recource busy"...
Replies: 7
Views: 7952

Re: How to reset cycled ESP32? "Device or recource busy"...

Oh, God! You're my savior! Thank you, it works!
by propeller
Mon Aug 24, 2020 6:53 am
Forum: ESP32 boards
Topic: How to reset cycled ESP32? "Device or recource busy"...
Replies: 7
Views: 7952

Re: How to reset cycled ESP32? "Device or recource busy"...

vitaly@L521X:~$ esptool.py --port /dev/ttyUSB0 erase_flash esptool.py v2.8 Serial port /dev/ttyUSB0 Traceback (most recent call last): File "/usr/local/bin/esptool.py", line 3201, in <module> _main() File "/usr/local/bin/esptool.py", line 3194, in _main main() File "/usr/local/bin/esptool.py", line...
by propeller
Mon Aug 24, 2020 5:44 am
Forum: ESP32 boards
Topic: How to reset cycled ESP32? "Device or recource busy"...
Replies: 7
Views: 7952

How to reset cycled ESP32? "Device or recource busy"...

I was make mistake while programs ESP32 and now it cycles with no point to stop. Esptool and picocom says "Device or resource busy" and connection fails. Is it possible to reset it or fully erase flash in this case?
by propeller
Fri Aug 07, 2020 3:57 am
Forum: Programs, Libraries and Tools
Topic: OneWire crc8 function usage
Replies: 1
Views: 1500

OneWire crc8 function usage

Foolish question. Who can show usage of onewire crc8 function? Which params this function gets? Can't find by myself...
by propeller
Sun Jun 21, 2020 9:54 am
Forum: ESP32 boards
Topic: Is there any Serial listener onboard?
Replies: 3
Views: 2687

Re: Is there any Serial listener onboard?

That is my tested variant. I used a class to collect all functions and to make one object to work with UART. Listener is listed below. def listener(self): for attempt in range(12): # 12 secs to wait an answer start = time.time() # Passing a second while start == time.time(): pass if self.any() == 0:...
by propeller
Tue Jun 16, 2020 6:34 am
Forum: ESP32 boards
Topic: Is there any Serial listener onboard?
Replies: 3
Views: 2687

Is there any Serial listener onboard?

Hi! I need to connect GSM to ESP32 via serial communication. Some serial AT-commands sends answer too fast, some of them takes some time. If actions to write command to serial and read answer follows step by step some commands sends answer too be late. Sleep command can`t solve this problem cause va...
by propeller
Tue Jun 16, 2020 3:10 am
Forum: ESP32 boards
Topic: Esp32-S2 port
Replies: 4
Views: 5031

Re: Esp32-S2 port

Is this question means availability of Serial2 port? Yes, it works. Use from machine import UART uart = UART (2, *****) # ***** - means desired communication speed uart.init (................) # init mode Look this http://docs.micropython.org/en/latest/library/pyb.UART.html Only use 'machine' instea...
by propeller
Thu Jun 04, 2020 4:23 am
Forum: ESP32 boards
Topic: How can I do use RX2/TX2 ports to extra serial communications?
Replies: 3
Views: 1986

How can I do use RX2/TX2 ports to extra serial communications?

Hi! I can`t find answer by myself. Is it possible?