zhujiu
Newbie level 3
- Joined
- Nov 26, 2014
- Messages
- 4
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1
- Activity points
- 22
Hi,all;
These days , I am learnning rc522. Today , I did a simple test. I use Uart communicate with rc522. I want to read the value of the register 0x01.But I find the rc522 always returns the same number I send to it .
As the picture above. When I want to read the value of the register ,I should set MSB = 1;and I have set it .
I send 0x81, and the module returns 00, 81...........But I think it should returns 20h......?
How can I get 20h?!
These days , I am learnning rc522. Today , I did a simple test. I use Uart communicate with rc522. I want to read the value of the register 0x01.But I find the rc522 always returns the same number I send to it .
As the picture above. When I want to read the value of the register ,I should set MSB = 1;and I have set it .
I send 0x81, and the module returns 00, 81...........But I think it should returns 20h......?
How can I get 20h?!