fix SPI examples

examples/simple/examples/spi.rs

@@ -8,7 +8,7 @@ use embedded_hal::spi::{Mode, SpiBus, MODE_0};
 use panic_rtt_target as _;
 use rtt_target::{rprintln, rtt_init_print};
 use simple_examples::peb1;
-use va416xx_hal::spi::{Spi, SpiClkConfig, TransferConfigWithHwcs};
+use va416xx_hal::spi::{Spi, SpiClkConfig};
 use va416xx_hal::{
     gpio::{PinsB, PinsC},
     pac,
@@ -55,14 +55,16 @@ fn main() -> ! {
         pins_c.pc1.into_funsel_1(),
     );
 
-    let mut spi_cfg = SpiConfig::default().clk_cfg(
-        SpiClkConfig::from_clk(Hertz::from_raw(SPI_SPEED_KHZ), &clocks)
-            .expect("invalid target clock"),
-    );
+    let mut spi_cfg = SpiConfig::default()
+        .clk_cfg(
+            SpiClkConfig::from_clk(Hertz::from_raw(SPI_SPEED_KHZ), &clocks)
+                .expect("invalid target clock"),
+        )
+        .mode(SPI_MODE)
+        .blockmode(BLOCKMODE);
     if EXAMPLE_SEL == ExampleSelect::Loopback {
         spi_cfg = spi_cfg.loopback(true)
     }
-    let transfer_cfg = TransferConfigWithHwcs::new_no_hw_cs(None, Some(SPI_MODE), BLOCKMODE, false);
     // Create SPI peripheral.
     let mut spi0 = Spi::new(
         &mut dp.sysconfig,
@@ -70,9 +72,7 @@ fn main() -> ! {
         dp.spi0,
         (sck, miso, mosi),
         spi_cfg,
-        Some(&transfer_cfg.downgrade()),
-    )
-    .expect("creating SPI peripheral failed");
+    );
     spi0.set_fill_word(FILL_WORD);
     loop {
         let tx_buf: [u8; 4] = [1, 2, 3, 0];

va416xx-hal/src/spi.rs

@@ -255,6 +255,9 @@ pub struct TransferConfig {
     /// the BMSTOP bit is set on a dataword. A frame is defined as CSn being active for the
     /// duration of multiple data words
     pub blockmode: bool,
+    /// Only used when blockmode is used. The SCK will be stalled until an explicit stop bit
+    /// is set on a written word.
+    pub bmstall: bool,
     pub hw_cs: HwChipSelectId,
 }
 
@@ -263,6 +266,7 @@ impl TransferConfigWithHwcs<NoneT> {
         clk_cfg: Option<SpiClkConfig>,
         mode: Option<Mode>,
         blockmode: bool,
+        bmstall: bool,
         sod: bool,
     ) -> Self {
         TransferConfigWithHwcs {
@@ -272,6 +276,7 @@ impl TransferConfigWithHwcs<NoneT> {
                 mode,
                 sod,
                 blockmode,
+                bmstall,
                 hw_cs: HwChipSelectId::Invalid,
             },
         }
@@ -284,6 +289,7 @@ impl<HwCs: HwCsProvider> TransferConfigWithHwcs<HwCs> {
         mode: Option<Mode>,
         hw_cs: Option<HwCs>,
         blockmode: bool,
+        bmstall: bool,
         sod: bool,
     ) -> Self {
         TransferConfigWithHwcs {
@@ -293,6 +299,7 @@ impl<HwCs: HwCsProvider> TransferConfigWithHwcs<HwCs> {
                 mode,
                 sod,
                 blockmode,
+                bmstall,
                 hw_cs: HwCs::CS_ID,
             },
         }
@@ -370,6 +377,21 @@ impl SpiConfig {
         self
     }
 
+    pub fn blockmode(mut self, enable: bool) -> Self {
+        self.blockmode = enable;
+        self
+    }
+
+    pub fn bmstall(mut self, enable: bool) -> Self {
+        self.bmstall = enable;
+        self
+    }
+
+    pub fn mode(mut self, mode: Mode) -> Self {
+        self.init_mode = mode;
+        self
+    }
+
     pub fn clk_cfg(mut self, clk_cfg: SpiClkConfig) -> Self {
         self.clk = clk_cfg;
         self
@@ -719,12 +741,8 @@ where
             } else {
                 w.sod().clear_bit();
             }
-            if transfer_cfg.cfg.blockmode {
-                w.blockmode().set_bit();
-            } else {
-                w.blockmode().clear_bit();
-            }
-            w
+            w.blockmode().bit(transfer_cfg.cfg.blockmode);
+            w.bmstall().bit(transfer_cfg.cfg.bmstall)
         });
     }