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This commit is contained in:
Lotte Steenbrink 2020-06-19 15:53:28 +02:00
parent 07cdaf5212
commit 71579aaa9f
1 changed files with 21 additions and 20 deletions
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41
tools/dk-run/src/main.rs
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@ -192,32 +192,33 @@ fn notmain() -> Result<i32, anyhow::Error> {
// run
let core = Rc::new(core);
let rtt_addr_result = rtt_addr.ok_or_else(|| anyhow!("RTT control block not available"))?;
let mut rtt: Result<Rtt, probe_rs_rtt::Error>;
let mut num_retries = 3; // picked at random, increase if necessary
let rtt_addr_res = rtt_addr.ok_or_else(|| anyhow!("RTT control block not available"))?;
let mut rtt_res: Result<Rtt, probe_rs_rtt::Error> =
Err(probe_rs_rtt::Error::ControlBlockNotFound);
const NUM_RETRIES: usize = 3; // picked at random, increase if necessary
loop {
rtt = Rtt::attach_region(
core.clone(),
&sess,
&ScanRegion::Exact(rtt_addr_result),
);
match rtt {
Ok(_) => { break; }
Err(res) => {
num_retries -= 1;
if num_retries == 0 {
log::info!("Max number of retries exceeded. Giving up.");
return Err(anyhow!(res));
for try_index in 0..NUM_RETRIES {
rtt_res = Rtt::attach_region(core.clone(), &sess, &ScanRegion::Exact(rtt_addr_res));
match rtt_res {
Ok(_) => {
log::info!("Successfully attached RTT");
break;
}
Err(probe_rs_rtt::Error::ControlBlockNotFound) => {
if try_index < NUM_RETRIES {
log::info!("Attaching RTT failed. retrying");
} else {
log::info!("Max number of retries exceeded. Giving up");
return Err(anyhow!(probe_rs_rtt::Error::ControlBlockNotFound));
}
log::info!("Attaching RTT failed. retrying");
}
Err(e) => {
return Err(anyhow!(e));
}
}
}
log::info!("Successfully attached RTT");
let channel = rtt
let channel = rtt_res
.unwrap() // using ? instead wouldn't show the user any helpful error message
.up_channels()
.take(0)