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even faster pio speed are possible

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This commit is contained in:
kbleeke
2023-03-19 16:43:46 +01:00
parent 0ff606dfc1
commit a6a2a035d5
3 changed files with 43 additions and 12 deletions
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31
src/bus.rs
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@ -4,6 +4,7 @@ use embassy_time::{Duration, Timer};
use embedded_hal_1::digital::OutputPin;
use embedded_hal_1::spi::ErrorType;
use embedded_hal_async::spi::{transaction, SpiDevice};
use futures::FutureExt;
use crate::consts::*;
@ -46,18 +47,40 @@ where
self.pwr.set_high().unwrap();
Timer::after(Duration::from_millis(250)).await;
while self.read32_swapped(REG_BUS_TEST_RO).await != FEEDBEAD {}
while self
.read32_swapped(REG_BUS_TEST_RO)
.inspect(|v| defmt::trace!("{:#x}", v))
.await
!= FEEDBEAD
{}
self.write32_swapped(REG_BUS_TEST_RW, TEST_PATTERN).await;
let val = self.read32_swapped(REG_BUS_TEST_RW).await;
let val = self
.read32_swapped(REG_BUS_TEST_RW)
.inspect(|v| defmt::trace!("{:#x}", v))
.await;
assert_eq!(val, TEST_PATTERN);
self.read32_swapped(REG_BUS_CTRL)
.inspect(|v| defmt::trace!("{:#010b}", (v & 0xff)))
.await;
// 32-bit word length, little endian (which is the default endianess).
self.write32_swapped(REG_BUS_CTRL, WORD_LENGTH_32 | HIGH_SPEED).await;
let val = self.read32(FUNC_BUS, REG_BUS_TEST_RO).await;
self.read8(FUNC_BUS, REG_BUS_CTRL)
.inspect(|v| defmt::trace!("{:#b}", v))
.await;
let val = self
.read32(FUNC_BUS, REG_BUS_TEST_RO)
.inspect(|v| defmt::trace!("{:#x}", v))
.await;
assert_eq!(val, FEEDBEAD);
let val = self.read32(FUNC_BUS, REG_BUS_TEST_RW).await;
let val = self
.read32(FUNC_BUS, REG_BUS_TEST_RW)
.inspect(|v| defmt::trace!("{:#x}", v))
.await;
assert_eq!(val, TEST_PATTERN);
}