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Merge pull request #3699 from bugadani/faq

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Update faq
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James Munns 2024-12-30 19:46:55 +00:00 committed by GitHub
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@ -92,17 +92,9 @@ If you see linker error like this:
>>> referenced by driver.rs:127 (src/driver.rs:127)
>>> embassy_time-846f66f1620ad42c.embassy_time.4f6a638abb75dd4c-cgu.0.rcgu.o:(embassy_time::driver::now::hefb1f99d6e069842) in archive Devel/Embedded/pogodyna/target/thumbv7em-none-eabihf/debug/deps/libembassy_time-846f66f1620ad42c.rlib
rust-lld: error: undefined symbol: _embassy_time_allocate_alarm
>>> referenced by driver.rs:134 (src/driver.rs:134)
>>> embassy_time-846f66f1620ad42c.embassy_time.4f6a638abb75dd4c-cgu.0.rcgu.o:(embassy_time::driver::allocate_alarm::hf5145b6bd46706b2) in archive Devel/Embedded/pogodyna/target/thumbv7em-none-eabihf/debug/deps/libembassy_time-846f66f1620ad42c.rlib
rust-lld: error: undefined symbol: _embassy_time_set_alarm_callback
>>> referenced by driver.rs:139 (src/driver.rs:139)
>>> embassy_time-846f66f1620ad42c.embassy_time.4f6a638abb75dd4c-cgu.0.rcgu.o:(embassy_time::driver::set_alarm_callback::h24f92388d96eafd2) in archive Devel/Embedded/pogodyna/target/thumbv7em-none-eabihf/debug/deps/libembassy_time-846f66f1620ad42c.rlib
rust-lld: error: undefined symbol: _embassy_time_set_alarm
rust-lld: error: undefined symbol: _embassy_time_schedule_wake
>>> referenced by driver.rs:144 (src/driver.rs:144)
>>> embassy_time-846f66f1620ad42c.embassy_time.4f6a638abb75dd4c-cgu.0.rcgu.o:(embassy_time::driver::set_alarm::h530a5b1f444a6d5b) in archive Devel/Embedded/pogodyna/target/thumbv7em-none-eabihf/debug/deps/libembassy_time-846f66f1620ad42c.rlib
>>> embassy_time-846f66f1620ad42c.embassy_time.4f6a638abb75dd4c-cgu.0.rcgu.o:(embassy_time::driver::schedule_wake::h530a5b1f444a6d5b) in archive Devel/Embedded/pogodyna/target/thumbv7em-none-eabihf/debug/deps/libembassy_time-846f66f1620ad42c.rlib
----
You probably need to enable a time driver for your HAL (not in `embassy-time`!). For example with `embassy-stm32`, you might need to enable `time-driver-any`:
@ -158,10 +150,9 @@ Note that the git revision should match any other embassy patches or git depende
* Set the following keys in the `[unstable]` section of your `.cargo/config.toml`
** `build-std = ["core"]`
** `build-std-features = ["panic_immediate_abort"]`
* Enable feature `embassy-time/generic-queue`, disable feature `embassy-executor/integrated-timers`
* When using `InterruptExecutor`:
** disable `executor-thread`
** make `main`` spawn everything, then enable link:https://docs.rs/cortex-m/latest/cortex_m/peripheral/struct.SCB.html#method.set_sleeponexit[SCB.SLEEPONEXIT] and `loop { cortex_m::asm::wfi() }`
** make `main` spawn everything, then enable link:https://docs.rs/cortex-m/latest/cortex_m/peripheral/struct.SCB.html#method.set_sleeponexit[SCB.SLEEPONEXIT] and `loop { cortex_m::asm::wfi() }`
** *Note:* If you need 2 priority levels, using 2 interrupt executors is better than 1 thread executor + 1 interrupt executor.
== How do I set up the task arenas on stable?