Adjust the config.toml for U5.
Correct ISA
Remove commented-out cruft.
[target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
-#runner = "probe-run --chip STM32U585AIIx"
-#runner = "/Users/bob/outboard-repos/probe-run/target/debug/probe-run-rp --chip STM32U585AIIx"
-#runner = "/Users/bob/repos/probe-run/target/debug/probe-run --chip STM32U585AIIx"
+# replace STM32U585AIIx with your chip as listed in `probe-run --list-chips`
runner = "probe-run --chip STM32U585AIIx"
[build]
-target = "thumbv7em-none-eabi"
+target = "thumbv8m.main-none-eabihf"
