feat(spi): rewrite spi implementation

Signed-off-by: HaoboGu <[email protected]>

examples/hpm5300evk/src/bin/spi.rs

@@ -0,0 +1,56 @@
+#![no_main]
+#![no_std]
+
+use embedded_hal::delay::DelayNs;
+use hpm_hal::gpio::{Level, Output, Speed};
+use hpm_hal::mode::Blocking;
+use hpm_hal::spi::enums::{SpiWidth, TransferMode};
+use hpm_hal::spi::{Config, Spi, TransactionConfig};
+use hpm_hal::time::Hertz;
+use riscv::delay::McycleDelay;
+use {defmt_rtt as _, hpm_hal as hal, panic_halt as _, riscv_rt as _};
+
+#[hal::entry]
+fn main() -> ! {
+    let p = hal::init(Default::default());
+
+    let mut delay = McycleDelay::new(hal::sysctl::clocks().cpu0.0);
+    defmt::info!("Board init!");
+
+    // PA10
+    let mut led = Output::new(p.PA10, Level::Low, Speed::Fast);
+
+    // let spi_config = hal::spi::Config {
+    //     mosi_bidir: false,
+    //     // lsb: true,
+    //     sclk_div: 0x1,
+    //     ..Default::default()
+    // };
+    let mut spi_config = Config::default();
+    spi_config.frequency = Hertz(20_000_000);
+
+    let mut spi: hal::spi::Spi<'_, Blocking> =
+        Spi::new_blocking(p.SPI1, p.PA26, p.PA27, p.PA29, p.PA28, spi_config);
+
+    let spi_config = TransactionConfig {
+        cmd: None,
+        addr: None,
+        addr_width: SpiWidth::SING,
+        data_width: SpiWidth::SING,
+        transfer_mode: TransferMode::WriteOnly,
+        ..Default::default()
+    };
+
+    let data = [
+        1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
+    ];
+
+    if let Err(e) = spi.write(&data, spi_config) {
+        defmt::panic!("Error: {:?}", e);
+    }
+
+    loop {
+        led.toggle();
+        delay.delay_ms(500u32);
+    }
+}

src/spi/enums.rs

@@ -289,3 +289,15 @@ impl Into<u8> for SlaveModeCommand {
         }
     }
 }
+
+/// SPI polarity mode
+pub enum PolarityMode {
+    /// Mode0, CPOL=0, CPHA=0
+    Mode0,
+    /// Mode1, CPOL=0, CPHA=1
+    Mode1,
+    /// Mode2, CPOL=1, CPHA=0
+    Mode2,
+    /// Mode3, CPOL=1, CPHA=1
+    Mode3,
+}