Hello, I am a beginner in node red and would like to save the data from the dht22 sensor in mysql and display via chart. I have already tried a lot but unfortunately without success.
I want to share an interesting case about updating the firmware over FOTA..
I have several nodes on a RS485 bus with memory chips.
Recently I decided to update the firmware on several at once and ran into an unexpected problem - repeated attempts to update constantly ended up with a checksum error !OTA:FWP:CRC FAIL.
At the same time, I usually test all new nodes for FOTA firmware updates before installing.
I tried to understand what the problem might be and came to an unexpected result - in my case, disabling the directive OTA_EXTRA_FLASH_DEBUG, which I had been using for a long time, when I first tested updates, helped.
After disabling this directive, all firmwares were updated the first time. Very strange, but nevertheless ...
Update:
The issue seems to be with the Mega Mini board.
I managed to remove the Adafruit RFM69HW daughter board from the verroboard, and wired this to a Nano, and a Teensy 3.2. Both worked with the same PSU.
The USB converter however is still giving garbage , no matter which of the three sources above.
So I am in the belated process of porting code to the teensy as the target.
Many thanks for the help to you all.
Now, if I can only sort out my sensebender gateway problem....
Maybe diggin a topic a bit, but as for June 2021 :
In library file MyHwSTM32.h one line seems to be lost :
#ifndef MyHwSTM32_h
#define MyHwSTM32_h
#include <IWatchdog.h>
#include <itoa.h>
#include <SPI.h>
#include <EEPROM.h> <<--- this is necessary to compile agains BluePill
and something like this in platformio.ini
[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
framework = arduino
upload_protocol = stlink
debug_port = stlink
debug_tool = stlink
monitor_speed = 115200
monitor_filters = time, default
Just to keep you entertained.
Cheerz.
