Content originally posted in LPCWare by aamir ali on Sat Nov 03 02:44:46 MST 2012
I have an application where I have to send bytes at 12 Mhz freq to another module. So I selected SSP1 for this purpose. Now actually I need only SCLK & MOSI line. I don't need MISO line.
Earlier I have left float MISO, so module worked fine.
Now i haven't configure MISO line. & still my module is working fine with SCLK & MOSI. Data received is garbage.
1. Is it right to do so. i.e not configure Miso. If not, what could be risk.
Also can I use MISO pin alternate function like GPIO, as I don't need it know.
2. Also if I configure MISO, should I pull it up, pull down or float.