Single master multiple slave implentation using PIC microcontroller

[Siddft]

Hello All,

I am trying to implement Single Master Multiple slave implementation using PIC microcontroller.

I am using PIC18F4550 as Master and PIC18F4520 as slave.

Slaves will convert the values of potentiometer(A/D conversion) and communicate those values to master using SPI protocol.

I am getting values correctly from slave to master in Single master single slave implemetation.

But when i connect more slaves to master then 'm not getting the values properly, i think there migth be some problem with DELAY(SYNC problem) so how to overcome from this problem.

If anybody have sample code for Single Master Multiple slave implementation plz share it.


Advance thanks,
Siddesh

 

[Jinzpaul4u]

Hi there,

Use daisy chain connection for multi slave communication. beacuse currently only one chip select pin you are using for slave selection it is wrong method.

Try daisy chain spi configuration and revert back me.

Best regards,

 

[Siddft]

hello Jinzpaul4u ,

rite noe 'm implementing using Typical SPI bus configuratiion.

I am using 2 slave selects D0 and D1.

Thanks

- - - Updated - - -

'll try with daisy chain configuration

 

[Jinzpaul4u]

Hello there,

Go ahead .. Best wishes