Comments (3)
I2C is limited to 32 bytes, so you'll probably need to switch to SPI for larger transfers.
from adafruit-pn532.
Thanks for the reply. We increased the i2c buffer to 128 byte and its working for us now. Switching to SPI wouldn't have been so easy for us und would eventually have the same problem. So we have done it that way.
from adafruit-pn532.
@juliabory Hi I also found the i2c buffer too small for a NDEF message, could you tell me how to increase it to 128 byte? Because when I increased BUFFER_LENGTH to a bit larger than 32, the PN532 just failed.
from adafruit-pn532.
Related Issues (20)
- ESP32 I2C sharing was working fine HOT 2
- ESP32 + SPI mode in a thread = nightmare
- Android HCE random ID HOT 1
- bool isready() function can be public? HOT 2
- buffer allocation too small HOT 1
- buffer allocated is too small HOT 1
- I2C PN532 on Pi Pico doesnt work updating to 1.3.0 HOT 8
- PN532 as_target change uid
- iso15693
- No ACK Frame on ESP32 + SPI, hangs after first tag read or no tag reads (With solution) HOT 5
- Compilation error when enabling debug in Adafruit_PN532 lib HOT 3
- Compilation error with RESET_PIN on GPIO0 on ESP32 HOT 2
- Hardware SPI not working on Arduino Giga R1 HOT 1
- IRQ functionality not working as expected. HOT 4
- InDataExchange() has wrong size limits
- UART, I2C do not work with esp32 HOT 5
- Clarification about "as target" example
- np532 (i2C) soft-powerdown mode
- Problems combining Adafruit_PN532.h V1.2.2 (SPI) with Ethernet.h V2.0 HOT 1
- PN532 Shield - can you start/stop the read function? HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from adafruit-pn532.