Search found 15 matches

by emtee
Tue Aug 11, 2020 4:41 pm
Forum: ESP8266 boards
Topic: ADC2 read ?
Replies: 1
Views: 1312

Re: ADC2 read ?

To the best of my knowledge the ESP8266 has ONLY 1 ADC input. I have seen labelled ADC or ADC0.
So the answer is: "No, you cannot read from ADC2 as the input does not exist on the ESP8266".
by emtee
Wed Apr 29, 2020 5:17 pm
Forum: ESP8266 boards
Topic: SOLVED: File download interrupted by RTOS message
Replies: 8
Views: 4101

Re: File download interrupted by RTOS message

@jomas, thank you for the information. I have updated the boot.py and this has eliminated the messages.

It appears the default boot.py created with the building of v1.12 has the debug message enabled.
by emtee
Tue Apr 28, 2020 5:10 pm
Forum: ESP8266 boards
Topic: SOLVED: File download interrupted by RTOS message
Replies: 8
Views: 4101

Re: File download interrupted by RTOS message

I have done a little bit of investigation and compared the two NodeMCU boards I have running. One board is flashed with v1.10 and shows the following information: MicroPython v1.10-8-g8b7039d7d on 2019-01-26; ESP module with ESP8266 Type "help()" for more information. >>> import esp >>> esp.sleep_ty...
by emtee
Tue Apr 28, 2020 4:46 pm
Forum: ESP8266 boards
Topic: SOLVED: File download interrupted by RTOS message
Replies: 8
Views: 4101

Re: File download interrupted by RTOS message

@jimmo, I should have included more information about my setup. Yes, I am sending the file over the serial port (USB). The board is a NodeMCU that I have flashed with microPython. The odd part of this, is when I was using v1.10 of micropython I never saw the messages I am seeing now. @kevinkk525, I'...
by emtee
Tue Apr 28, 2020 4:10 am
Forum: ESP8266 boards
Topic: SOLVED: File download interrupted by RTOS message
Replies: 8
Views: 4101

SOLVED: File download interrupted by RTOS message

I am having issues downloading a large file to my ESP8266. Approximately 60% into the downloaded, I receive the following text from the ESP8266: scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 4 cnt connected with access-point, channel 11 dhcp client start... ip:192.168.xx...
by emtee
Tue Apr 14, 2020 6:29 am
Forum: General Discussion and Questions
Topic: Interfacing with industrial PLC and HMI
Replies: 3
Views: 3745

Re: Interfacing with industrial PLC and HMI

I have over 30 years of Industrial Automation experience and I'll try to answer some of your questions. I'm not sure of your own background and experience so I will assume minimal knowledge of Industrial Automation protocols. I have a lot of years experience with Modbus protocol. Modbus is used by a...
by emtee
Fri Jan 31, 2020 8:37 pm
Forum: ESP8266 boards
Topic: led.off() turns it on and vise versa??
Replies: 4
Views: 3685

Re: led.off() turns it on and vise versa??

kevinkk525 is most likely right in that the board you are using has an active low output for the onboard LED. I am using a NodeMCU board with an active low LED. I was experiencing the LED going on when issuing a led.off() command and turning off when issuing a led.on() command. :?: The trick is in t...
by emtee
Sat Nov 09, 2019 8:38 pm
Forum: General Discussion and Questions
Topic: waiting for an interrupt flag to be set
Replies: 11
Views: 6257

Re: waiting for an interrupt flag to be set

Sorry to jump in, but 65535 as a 2 byte interger viewed as a hex value is 0xFFFF. If you re-interpret this as a signed 2 byte integer value, this is -1. Not sure if this is significant for the return status for the connection, but it may be an error status. Just my 2 bits (or bytes in this case) ......
by emtee
Sat Nov 09, 2019 8:11 pm
Forum: General Discussion and Questions
Topic: CAN on STM32F4xx
Replies: 12
Views: 7872

Re: CAN on STM32F4xx

I'll start with the obvious. You will need to post more detail with regards to type of transceivers, wiring of the CAN bus and the micropython code use are using that demonstrates the problem.

Without this information it is difficult to speculate on what the problem may be. :)
by emtee
Sun Mar 24, 2019 3:57 am
Forum: ESP8266 boards
Topic: File system issue
Replies: 2
Views: 2181

Re: File system issue

@cefn thanks for the reply. The board is plugged into my laptop as I am continuing to do development. Good thought about using a good quality power supply.