Hi,
the solution is using thicker cable for VCC and GND.
ESP8266 3.3V output seems to critical if both modules are driven via a USB cable.
Kurt
Search found 20 matches
- Thu Feb 07, 2019 5:08 pm
- Forum: ESP8266 boards
- Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
- Replies: 16
- Views: 45847
- Wed Feb 06, 2019 8:18 pm
- Forum: ESP8266 boards
- Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
- Replies: 16
- Views: 45847
Re: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Hi, bought two of this boards https://de.aliexpress.com/item/Ra-01-SX1278-LoRa-Spread-Spectrum-Wireless-Module-433MHz-Wireless-Serial-Port-UART-Interface-Ra01/32810291073.html?spm=a2g0s.9042311.0.0.27424c4dchvsOj and connected one to ESP32 DEVKIT V1 using your code from github and run the example 'D...
- Thu Jan 31, 2019 1:33 pm
- Forum: ESP32 boards
- Topic: WIZNET5K usage in ESP32 port
- Replies: 1
- Views: 2244
Re: WIZNET5K usage in ESP32 port
Unfortunately, no solution. See: https://github.com/micropython/micropython/issues/4447
- Tue Jan 22, 2019 6:42 pm
- Forum: ESP32 boards
- Topic: WIZNET5K usage in ESP32 port
- Replies: 1
- Views: 2244
WIZNET5K usage in ESP32 port
Hi, bought a WIZNET5K W5500 board. How can I include it in a build for esp32? Many thanks for any hint. Kurt I did the following: - modified in wizchip_conf.h parameter: #define _WIZCHIP_ 5200 to #define _WIZCHIP_ 5500 - modified Makefile from: DRIVERS_SRC_C = $(addprefix drivers/,\ bus/softspi.c \ ...
- Wed Jul 25, 2018 9:07 pm
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
Re: uart.StreamReader and asyncio no data
Hi,
from my point of view you can use GPIO3. I think, you should do a uart.deinit() first.
See here:
https://docs.micropython.org/en/latest/ ... .UART.html
Regards
Kurt
from my point of view you can use GPIO3. I think, you should do a uart.deinit() first.
See here:
https://docs.micropython.org/en/latest/ ... .UART.html
Regards
Kurt
- Sun Jul 08, 2018 6:22 am
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
Re: uart.StreamReader and asyncio no data
Hi, problem solved by uos.dupterm(None) and !!! uos.dupterm(None, 1). Means both have to be set. REPL and WebREPL are not more usable with this setup, for shure. I have to find an other way to communicate with the app, may be an own web server. Here my test app: import uos import time from machine i...
- Sat Jul 07, 2018 9:36 pm
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
Re: uart.StreamReader and asyncio no data
Hi kevinkk525, thanks for presenting the link. Unfortunately, it does not change anything. I extend my test app to get WebREPL by start a network connection. import network import uasyncio as asyncio from machine import UART import uos uos.dupterm(None, 1) uart = UART(0, 115200) uart.init(115200, bi...
- Fri Jul 06, 2018 7:57 am
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
Re: uart.StreamReader and asyncio no data
Hi Peter, I used import uasyncio as asyncio from machine import UART uart = UART(0, 115200) async def receiver(): sreader = asyncio.StreamReader(uart) while True: res = await sreader.readline() print('Recieved', res) loop = asyncio.get_event_loop() loop.create_task(receiver()) loop.run_forever() loa...
- Thu Jul 05, 2018 9:33 am
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
Re: uart.StreamReader and asyncio no data
Hi Peter, sorry, you are absolutly right. My application uses a 3 by 4 keypad matrix and an RFID reader connected via UART to the ESP8266 (at a second solution a RFC522 is connected via SPI, instead. This runs fine). With the asyncio functionalty of micropython, I'm able to run tasks for check keypa...
- Wed Jul 04, 2018 10:01 am
- Forum: ESP8266 boards
- Topic: uart.StreamReader and asyncio no data
- Replies: 10
- Views: 9675
uart.StreamReader and asyncio no data
Hi, run MicroPython v1.9.4-241-g14ab81e on my ESP8266 nodemcu board. load import uasyncio as asyncio from machine import UART uart = UART(0, 115200) async def sender(): swriter = asyncio.StreamWriter(uart, {}) while True: await swriter.awrite('Hello uart\n') await asyncio.sleep(2) async def receiver...