Pin Assignement

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
JulianLBTK
Level 1
Level 1
10 sign-ins 5 likes given 5 sign-ins

Hi everyone... I'm working with the DS18B20 temperature sensor and I'm using One-Wire Protocol,  the project is working well but I have a question:

Why when I use any of the following pins: P0[2],  P0[3], P0[4], P3[2], in order to read the sensor's signal, the display shows me 0.00 ºC, but when I use any other GPIO Pin the display shows a correct temperature value?

There is something I'm missing something about those pins? Any caracteristic that doesn't allow them to function in data sensor reading? 

Thanks in advance...

0 Likes
1 Solution
BiBi_1928986
Level 7
Level 7
First comment on blog 500 replies posted 250 replies posted

Hello.

Assuming you are using KIT-059 (missing details of your setup), the 4 port pins you identified have 1uF capacitors attached to them.

Good luck with your project.

View solution in original post

5 Replies