required low-level debugging

vorago-reb1/examples/nvm.rs

@@ -8,10 +8,16 @@ use panic_rtt_target as _;
 use rtt_target::{rprintln, rtt_init_print};
 use va108xx_hal::{
     pac,
-    spi::{RomCs, RomMiso, RomMosi, RomSck, Spi, SpiClkConfig, SpiConfig, TransferConfigWithHwcs},
+    spi::{
+        RomCs, RomMiso, RomMosi, RomSck, Spi, SpiClkConfig, SpiConfig, TransferConfigWithHwcs,
+        BMSTART_BMSTOP_MASK,
+    },
     time::Hertz,
 };
-use vorago_reb1::m95m01::{regs::RDSR, M95M01};
+use vorago_reb1::m95m01::{
+    regs::{RDSR, WREN},
+    StatusReg, M95M01,
+};
 
 const CLOCK_FREQ: Hertz = Hertz::from_raw(50_000_000);
 
@@ -23,7 +29,7 @@ fn main() -> ! {
     let mut dp = pac::Peripherals::take().unwrap();
     let cp = cortex_m::Peripherals::take().unwrap();
 
-    let mut spi = Spi::new(
+    let mut spi = Spi::<pac::Spic, (RomSck, RomMiso, RomMosi)>::new(
         &mut dp.sysconfig,
         CLOCK_FREQ,
         dp.spic,
@@ -32,8 +38,21 @@ fn main() -> ! {
         SpiConfig::default().clk_cfg(SpiClkConfig::new(2, 4)),
     );
     let mut read_buf: [u8; 2] = [0; 2];
-    spi.transfer(&mut read_buf, &[RDSR, 0]);
+    let spi = spi.spi();
+    unsafe {
+        spi.data().write(|w| w.bits(RDSR.into()));
+        spi.data().write(|w| w.bits(0 | BMSTART_BMSTOP_MASK));
+    }
+    while spi.status().read().tfe().bit_is_clear() {}
+    while spi.status().read().rne().bit_is_clear() {}
+    let dummy = spi.data().read().bits();
+    while spi.status().read().rne().bit_is_clear() {}
+    let reg = StatusReg(spi.data().read().bits() as u8);
+    rprintln!("status reg {:?}", reg);
+    //spi.transfer(&mut read_buf, &[RDSR, 0]);
     rprintln!("read buf {:?}", read_buf);
+    //spi.write(&[WREN]);
+    /*
     let mut nvm =
         M95M01::new(ExclusiveDevice::new_no_delay(spi, dummy_pin::DummyPin::new_low()).unwrap())
             .expect("creating NVM structure failed");
@@ -51,5 +70,6 @@ fn main() -> ! {
     nvm.write(0x4000, &write_buf).unwrap();
     nvm.read(0x4000, &mut read_buf[0..4]).unwrap();
     assert_eq!(&read_buf[0..4], write_buf);
+    */
     loop {}
 }