Questions tagged [port-mapping]

Port-mapping refers to directly accessing the hardware registers (ports), in particular the input/output ports. Use this tag for discussing direct port access.

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About Corrupted LM35 IC and Arduino port problem

I have one Arduino Uno which was working fine by below circuit(link): But when I have connected the new bought the LM35 Ic by the below connection: The Arduino UNO don't be recognized by the my ...
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186 views

No Socket Available message floods serial monitor

Serial Monitor get's flooded with "No Socket Available" message. This seems to occur even before I Try to communicate with my Hue bridge through my hub port. Does anyone see why this is occurring ...
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44 views

Port manipulation: Coding for two chips

I am using Arduino Nano to test a code that will be ported on an ATTiny chip, which will need to perform operations at a frequency near clock maximum, calling for a very succinct coding. My goal: to ...
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78 views

How can I add PWM to my BLDC code using port manipulation?

I have the following code, which currently uses 6 output pins (pins 8 - 13) from the Arduino to my inverter circuit, which controls a BLDC motor. The code is fine and it works, however I want to add ...
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0answers
94 views

MKR 1000 not found in ports when MKR IMU Shield is connected

I am trying to connect my MKR IMU Shield to my MKR1000 by placing the IMU shield in the MKR1000. When I do this, however, the Arduino IDE and Simulink are unable to find the port that my Arduino is ...
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379 views

Reading data by port manipulation (Arduino Due)

I have shorted the 23rd pin of port A with 3.3v output pin (i.e. tieing 23rd pin of port A to logic high). Now I am trying to read the 23rd pin of port A by using following code- void setup() { ...
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37 views

Arduino Port randomly changes whenever I punch correct RFID tag

I was working on an Electronic Door Lock/Unlock system using Arduino Uno and RFID Reader/Tags on Ubuntu 18.04.02 lts. Now the problem is that whenever I punch-in the correct RFID tag to the RFID ...
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202 views

Bit Bang I2C with port manipulation on AtTiny84: new pinout doesn't work

So I am trying to understand bit banging and port operations. I'm developing a breakout board with an ADXL343 IMU read by an AtTiny44 via i2c. I adapted this code from MIT's How To Make Almost ...
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217 views

How to choose a port on Arduino Create

I have connected my Mega2560 Arduino to my computer; locally everything works fine - I have been able to upload and run programs. However, on Arduino Create, it shows that there's no connection to my ...
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2answers
126 views

Why does attaching Nokia 5110 LCD make my otherwise fine MKR1000 disconnect USB after 15 secs?

This problem just started after 3 days of working on a project. I am using Arduino IDE in Windows 10. When I go to upload "Blink," everything works fine. I connect the USB (sometimes I have to ...
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1answer
460 views

MKR FOx 1200 doesn't upload Sketch

My Arduino MKR Fox 1200 doesn't upload any sketches. First it worked, but now it doesn't. It compiles the bare minimum sketch (empty loop and empty setup) but then uploads forever and after a long ...