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firmware: don't unwrap() but propagate pca9548 errors

This commit is contained in:
Astro 2019-08-16 01:13:35 +02:00 committed by Sébastien Bourdeauducq
parent a8aabd3815
commit afe162ceca
1 changed files with 2 additions and 2 deletions
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4
artiq/firmware/libboard_artiq/pca9548.rs
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@ -2,10 +2,10 @@ use i2c;
pub fn select(busno: u8, address: u8, channels: u8) -> Result<(), &'static str> {
i2c::start(busno).unwrap();
if !i2c::write(busno, address << 1).unwrap() {
if !i2c::write(busno, address << 1)? {
return Err("PCA9548 failed to ack write address")
}
if !i2c::write(busno, channels).unwrap() {
if !i2c::write(busno, channels)? {
return Err("PCA9548 failed to ack control word")
}
i2c::stop(busno).unwrap();