Dec 07, 2021
08:46 PM
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Dec 07, 2021
08:46 PM
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...
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PSOC5 LP MCU
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Dec 08, 2021
03:50 AM
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Dec 08, 2021
03:50 AM
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.
5 Replies