rust/va108xx-hal
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First I2C implementation

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Initial I2C HAL implementation.
Only the I2cMaster was tested so far, I2cSlave will be tested next.

Master side was tested with a temerature sensor example application
in the vorago-reb1 crate
This commit is contained in:
Robin Müller
2021-12-02 12:03:46 +01:00
parent 70d9f123ef
commit 3886e2f11f
7 changed files with 937 additions and 7 deletions
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6
src/spi.rs
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@ -637,7 +637,7 @@ macro_rules! spi {
read_words: Option<&'w mut [$WORD]>,
) -> Result<(), Infallible> {
// FIFO has a depth of 16.
const FIFO_WORDS: usize = 12;
const FILL_DEPTH: usize = 12;
if self.blockmode {
self.spi.ctrl1.modify(|_, w| {
@ -647,7 +647,7 @@ macro_rules! spi {
// Fill the first half of the write FIFO
let len = write_words.len();
let mut write = write_words.iter();
for _ in 0..core::cmp::min(FIFO_WORDS, len) {
for _ in 0..core::cmp::min(FILL_DEPTH, len) {
nb::block!(self.send(*write.next().unwrap())).ok().unwrap();
}
if self.blockmode {
@ -676,7 +676,7 @@ macro_rules! spi {
}
// Dummy read from the read FIFO
for _ in 0..core::cmp::min(FIFO_WORDS, len) {
for _ in 0..core::cmp::min(FILL_DEPTH, len) {
let _ = nb::block!(self.read()).ok().unwrap();
}
}