GT511C3 Fingerprint sensor with ESP8266 and FreeRTOS

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Joined: Sat Apr 13, 2019 11:51 am

GT511C3 Fingerprint sensor with ESP8266 and FreeRTOS

Postby licondam » Wed May 15, 2019 10:36 am

Hi, I want to use GT511C3 with ESP8266 using FreeRTOS, as there is no existing driver, I am trying to write one. What I am facing problem in, is the Serial communication with the Sensor. The Sensor has a Rx and Tx pins for serial comm(I am guessing UART), I looked at its library in Arduino driver for this sensor and they are using SoftareSerial.h for serial read/write operations. I need to send a command packet of 12 bytes and then receive a response packet of 12 bytes. I tried sending the data byte by byte using putchar and recieve using getchar but I didn't receive any response. So basically i need to create something like a softwareserial.h in esp-open-rtos. Any Help?

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Joined: Sat Apr 01, 2017 1:21 am

Re: GT511C3 Fingerprint sensor with ESP8266 and FreeRTOS

Postby AgentSmithers » Tue Jul 09, 2019 12:43 am

I can assist you. I've used both hardware and software uart on the esp8266. What timezone are you?
I use NONOS SDK but if I take a look at your setup I may still be able to point you in the right direction.
Why do you feel you require you use a Software Serial over your hardware Serial.. Your Hardware implementation should be fine to use to talk to the scanner.

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