SSP slave select issue

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Rahul mankumbare on Fri Feb 19 04:17:33 MST 2016

I am using LPC1768 SSP in SPI mode & using it in Master mode.

My slave device is Current sensor.

I am using SSP1.

When I configure P0.6 as SSEL pin in SSP1, I am able to communicate with current sensor & read current data.

When I configure P0.6 as a GPIO & make it LOW Current sensor does not respond.

I am not getting what happens when I make P0.6 as SSEL in SSP1.

I want to use 4 current sensors. So there are 3 more SSEL pins are used which are GPIO.
Now How should I communicate with all sensors using GPIO as slave select.

In my project SPI is busy in communication with other MCU's. So I have to use SSP only.

Please suggest something.