LPCXpresso IDEのトピックLPC1102 SSEL pin

LPC1102 SSEL pin

lpcware — Thu, 16 Jun 2016 02:41:37 GMT

Content originally posted in LPCWare by MikeN on Thu Jun 30 00:51:49 MST 2011
Hi All, I am looking at the LPC1102 to replace a small 8 bit part. It needs to act as an SPI slave (to another M0 part as it happens), but I can't find the SSEL pin.

Is there one?

If not how do I get the functionality? The UM refers to it, but I cannot see a pin allocation for it.

Regards

Re: LPC1102 SSEL pin

lpcware — Thu, 16 Jun 2016 02:41:38 GMT

Content originally posted in LPCWare by kendwyer on Thu Jun 30 15:30:16 MST 2011
Hi,
There is not SSEL pin, you will need to use a GPIO.
UM needs to be fixed in that respect.

Re: LPC1102 SSEL pin

lpcware — Thu, 16 Jun 2016 02:41:38 GMT

Content originally posted in LPCWare by MikeN on Fri Jul 01 00:08:05 MST 2011
Thanks. I can see how to do that for master function (chip select can be any pin), but I don't see how to get the slave select function if the hardware doesn't know which pin represents the start of a transmission. The UM says it supports slave functionality, but perhaps you have to do a lot of firmware to make it happen?

Quote: kendwyer
Hi,
There is not SSEL pin, you will need to use a GPIO.
UM needs to be fixed in that respect.