Lpc11u37 spi slave select pin

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by siangming on Wed Mar 04 17:03:32 MST 2015
hi all,

I am trying to use the spi on this mcu, lpc11u37, as a master spi and connect the mcu to another single slave spi device only.

After reading the reference manual, I still do not understand if the slave select pin is driven automatically to the active state whenever there is a data waiting to send out in the FIFO buffer ....

or do I have to manually drive it to the active state before the data get sent out through the MOSI. If so, do I also have to manually drive it back to inactive state after the data transmission is done?

Thank you.