Search found 50 matches

by jomas
Sun Jun 28, 2020 11:26 am
Forum: ESP8266 boards
Topic: I2C.scan() only returning 1 address in chain
Replies: 7
Views: 229

Re: I2C.scan() only returning 1 address in chain

Pulled all the jumper wires, swapped them out for different ones. I've been disconnecting the slaves by pulling VCC from them, so the logic lines are still there. Currently it's the GY521 being detected, which is physically 2nd in the chain. Pull power from it & the BMP280 is detected; repower and ...
by jomas
Fri May 22, 2020 12:37 pm
Forum: ESP8266 boards
Topic: Who can confirm deep sleep alarm wake on D1 mini boards
Replies: 4
Views: 462

Re: Who can confirm deep sleep alarm wake on D1 mini boards

There does not seem to be a direct connection between GPIO16 and RST on the board, I measure infinite resistance, but a capacitance on the order of µF, which is apparently sufficient to transmit a weak reset pulse. Of course there is no connection between GPIO16 and RST. People also want to use GPI...
by jomas
Mon May 18, 2020 12:29 pm
Forum: ESP8266 boards
Topic: Firmware support for D1 mini deep sleep problem
Replies: 2
Views: 258

Re: Firmware support for D1 mini deep sleep problem

GPIO0 should always be high when you reset and if you want a normal start. If it is low on reset your ESP will go into flashmode. To use the deepsleep you must connect GPIO16 to reset. Then it will work as expected. The deepsleep is a SDK function and has nothing to do with MicroPython so you will n...
by jomas
Sat May 16, 2020 9:27 am
Forum: ESP8266 boards
Topic: Is deactivating WLAN equivalent to depowering wifi?
Replies: 2
Views: 785

Re: Is deactivating WLAN equivalent to depowering wifi?

I have noticed that WLAN state changes are persistent across resets. This is as expected, as the ESP8266 is documented to automatically reconnect upon power-up. Correspondingly, I have noticed that deactivating the WLAN before reseting is also persistent: the WLAN is not reactivated or connected up...
by jomas
Sat May 16, 2020 9:22 am
Forum: ESP8266 boards
Topic: RTC memory
Replies: 2
Views: 802

Re: RTC memory

Apparently a trick to both reduce power consumption to increase battery life while simultaneously saving EEPROM cycles is to pass small amounts of data across deep sleep cycles by writing that data (up to 512 bytes) into the RTC memory. I don't see API endpoints for this in the docs. Does MicroPyth...
by jomas
Tue May 05, 2020 7:34 pm
Forum: General Discussion and Questions
Topic: asyncio.start_server example (!)
Replies: 11
Views: 672

Re: asyncio.start_server example (!)

At last it worked ! Putting a small delay right after writer.awrite(resp) , solved the problem. The whole working code is : import uasyncio as asyncio import utime async def serve(reader, writer): t = utime.ticks_ms() resp = b"HTTP/1.0 200 OK\r\n\r\n" + "Ticks = {TICKS}\r\n".format(TICKS=t) l = awa...
by jomas
Fri May 01, 2020 8:31 pm
Forum: ESP8266 boards
Topic: Mode STA...no work
Replies: 8
Views: 1180

Re: Mode STA...no work

Works! Just one time... :shock: Upload again main.py and...not works. I don´t get it. @madeskjet , did you read my post? You have you put time.sleep(0.1) as I suggested because that is the problem. Edit: Maybe it is neccessary to put de delay after "sta_if.active(True)" Anyway it 100% is a (reprodu...
by jomas
Fri May 01, 2020 7:33 pm
Forum: ESP8266 boards
Topic: Mode STA...no work
Replies: 8
Views: 1180

Re: Mode STA...no work

Impossible! NodeMCU Amica V1.0 MicroPython v1.12 on 2019-12-20; ESP module with ESP8266 import machine import network import time led = machine.Pin(16, machine.Pin.OUT) led.value(0) print ("LED Encendido") sta_if = network.WLAN(network.STA_IF) ap_if = network.WLAN(network.AP_IF) if (ap_if.active())...
by jomas
Thu Apr 30, 2020 1:27 pm
Forum: ESP8266 boards
Topic: What makes WiFi config persistent?
Replies: 6
Views: 2785

Re: What makes WiFi config persistent?

Yesterday, I compiled the latest version of micropython for ESP8266 and I started seeing this annoying output in repl repeatedly: connected with Cisti, channel 1 dhcp client start... ip:192.168.1.4,mask:255.255.255.0,gw:192.168.1.1 state: 5 -> 2 (22c0) rm 0 reconnect state: 2 -> 0 (0) scandone stat...
by jomas
Tue Apr 28, 2020 9:07 pm
Forum: ESP8266 boards
Topic: SOLVED: File download interrupted by RTOS message
Replies: 8
Views: 470

Re: File download interrupted by RTOS message

emtee wrote:
Tue Apr 28, 2020 5:10 pm


It does seem odd that both boards are set to the same sleep_type() (SLEEP_MODEM), but only the v1.12 board is issuing the messages.

These are debug messages. They interfere with your download.
To disable, see boot.py and uncomment some lines.

import esp
esp.osdebug(None)