main: work around spi stall erratum and debug

2019-04-17 14:04:05 +00:00 · 2019-04-17 14:04:05 +00:00 · 8ff8a4ce31
commit 8ff8a4ce31
parent 00a758ed12
1 changed files with 6 additions and 0 deletions
--- a/src/main.rs
+++ b/src/main.rs
@ -571,6 +571,12 @@ fn main() -> ! {
               &spi5.cr1 as *const _ as usize);

    rcc.apb1lenr.modify(|_, w| w.tim2en().set_bit());
+
+    // work around the SPI stall erratum
+    //let dbgmcu = dp.DBGMCU;
+    //dbgmcu.apb1lfz1.modify(|_, w| w.stop_tim2().set_bit());  // stop tim2 in debug
+    unsafe { ptr::write_volatile(0x5c00_103c as *mut usize, 0x0000_0001) };
+
    tim2_setup(&dp.TIM2);

    unsafe {