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arendst / Tasmota

Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
https://tasmota.github.io/docs
GNU General Public License v3.0
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PN532 HSU not working ELECHOUSE card and WEMOS D1 #5497

Closed olix74 closed 5 years ago

olix74 commented 5 years ago

Hi, first of all thank you for all your efforts! I would like to connect PN532. I'm using latest tasmota 6.5.0 release on WEMOS d1 and NFC MODULE V3 from ELECHOUSE. I'm building sonoff-sensors with enabled #define USE_PN532_HSU with PlatformIO and Visual Studio Code successfully. I do connect as follows: wemos d1-->PN532 GND-->GND 3V3-->VCC D1-->SCL/RXD D2-->SDA/TXD I also configued PINs and config as described on the wiki page for PN532.

Initialy communication did not seem to work at all. I debugged a lot and added some retries to the code and by that I could get communication up and running "sporadicaly" and was able to read NFC cards, but never managed to get it running stable. I also noticed some timing issues with the retries, since removing debug output changed communication behavior. I also tried NODEMCU instead of WEMOS and tried 3 different PN532 from totaly different suppliers, different cables etc - problem always seems to be the same.

Has anyone ever observed similar issues. Any idea on what I may be doing wrong? Currently I assume serial communication is highly unstable, but I don't know why or how to fix.

One more question: I tried to compile with #define USE_PN532_HSU on sonoff-classic, the resulting image was running fine but would not allow me to configure PN_532_RX or TX on the device config - any hint here? Thank you all, Oliver

ascillato2 commented 5 years ago

Closing this issue as it is duplicated. Sorry. Please, check in the already open issue (https://github.com/arendst/Sonoff-Tasmota/issues/4941). Thanks

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