rp/spi: add configurable pha/pol

1 files changed, 9 insertions, 2 deletions

diff --git a/embassy-rp/src/spi.rs b/embassy-rp/src/spi.rs
index c919672a..3316d248 100644
--- a/embassy-rp/src/spi.rs
+++ b/embassy-rp/src/spi.rs
@@ -3,20 +3,27 @@ use core::marker::PhantomData;
 use embassy::util::Unborrow;
 use embassy_extras::unborrow;
 use embedded_hal::blocking::spi as eh;
+use embedded_hal::spi as ehnb;
 
 use crate::gpio::sealed::Pin as _;
 use crate::gpio::{NoPin, OptionalPin};
 use crate::{pac, peripherals};
 
+pub use ehnb::{Phase, Polarity};
+
 #[non_exhaustive]
 pub struct Config {
     pub frequency: u32,
+    pub phase: ehnb::Phase,
+    pub polarity: ehnb::Polarity,
 }
 
 impl Default for Config {
     fn default() -> Self {
         Self {
             frequency: 1_000_000,
+            phase: ehnb::Phase::CaptureOnFirstTransition,
+            polarity: ehnb::Polarity::IdleLow,
         }
     }
 }
@@ -65,8 +72,8 @@ impl<'d, T: Instance> Spi<'d, T> {
             p.cpsr().write(|w| w.set_cpsdvsr(presc as _));
             p.cr0().write(|w| {
                 w.set_dss(0b0111); // 8bit
-                w.set_spo(false);
-                w.set_sph(false);
+                w.set_spo(config.polarity == ehnb::Polarity::IdleHigh);
+                w.set_sph(config.phase == ehnb::Phase::CaptureOnSecondTransition);
                 w.set_scr((postdiv - 1) as u8);
             });
             p.cr1().write(|w| {