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give the EC some time to boot before querying its version

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This commit is contained in:
bunnie 2023-03-15 02:26:56 +08:00
parent f93670a30d
commit 2cda7fc418
1 changed files with 5 additions and 3 deletions
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8
services/com/src/main.rs
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@ -395,6 +395,7 @@ fn main() -> ! {
const FLASH_TIMEOUT: u32 = 250;
// initial seed of the COM trng
ticktimer.sleep_ms(100).unwrap(); // some time for the EC to catch up during boot
let trng = trng::Trng::new(&xns).expect("couldn't connect to TRNG");
com.txrx(ComState::TRNG_SEED.verb);
for _ in 0..2 {
@ -406,11 +407,12 @@ fn main() -> ! {
}
// determine the version of the COM that we're talking to
ticktimer.sleep_ms(100).unwrap(); // some time for the EC to catch up during boot
let mut ec_git_rev = {
com.txrx(ComState::EC_GIT_REV.verb);
let rev_msb = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT)) as u16;
let rev_lsb = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT)) as u16;
let _dirty = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT)) as u8;
let rev_msb = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT * 2)) as u16;
let rev_lsb = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT * 2)) as u16;
let _dirty = com.wait_txrx(ComState::LINK_READ.verb, Some(STD_TIMEOUT * 2)) as u8;
((rev_msb as u32) << 16) | (rev_lsb as u32)
};
let mut ec_tag = {