CHANGE IN THE LIBRARY

Projects Programming
1

Greetings,
I want to use this mma7361 accelerometer library.In this library mma7361 uses 9,11,12,13 digital pins of arduino.
If I change these to digital pins 2,3,4,5.Will the library still work?.Actually I want to use a shield

Any other suggestions are welcomed.
Thank you in advance.

AcceleroMMA7361.cpp (10.3 KB)

2

Hi there

From the library file, it looks like calling the begin() method with no parameters makes it use the pins you mentioned: sleepPin = 13, selfTestPin = 12, zeroGPin = 9, gSelectPin = 11.

But you can also call begin() with parameters. The prototype in the file is ...

void AcceleroMMA7361::begin(int sleepPin, int selfTestPin, int zeroGPin, int gSelectPin, int xPin, int yPin, int zPin)

So your program would have something like:

myAccel.begin(2, 3, 4, 5, A0, A1, A2);  // CHECK THAT THE ORDER OF THE PINS IS WHAT YOU WANT :-)

You don't need to edit the library.

By the way, you also mentioned using a shield. Can you explain more?

All the best

Ray

3

Thanks for the reply actually if I use the mentioned shield the pins 10,11,12,13 are not able to be used for this purpose.

4

if I use the mentioned shield the pins 10,11,12,13 are not able to be used for this purpose

That's not true. LOOK AT THE SCHEMATIC (attached)
8,11, & 13 are dedicated. Pin-8 is the SPI SS chip select.
Pins 10 & 12 are not used.

microSD_Shield_v13_Schematic.pdf (186 KB)

5

Thanks for the response .