Guru
Joined: 11/12/2012
Location: United KingdomPosts: 12005
| Posted: 05:56pm 15 Jun 2022 |
The Pico SDK doesn't appear to set the clock up until the first use of the bus. The workaround is to do a dummy transaction with CS high before you first use it for real
e.g.
setpin cspin,dout
pin(cspin)=1
setpin 4,5,6,spi
spi open 1000000,3,8
spi write 1,0
'
' now the clock will be high
'