9064177e99
* wip: timg embassy driver - read_raw on timg renamed to now() - timg initialized and stored in static for use in the embassy driver - timg sets alarm value - untested whether alarms actually trigger * TIMG timer driver for esp32, esp32s3 - Adds the timg timer block as a time driver for embassy - Not enabled on the C3 as it only has one timer block, better to use systimer - s2 example added but can't build due to atomic requirements in futures-core * Add S2 atomic support with emulation, fixup embassy support for the S2 * Move executor & static-cell to dev deps. Make eha optional * Add c2 support, run fmt * Update to crates.io embassy releases * Update eha * update timg time driver to new trait * Remove exception feature of esp-backtrace and use the user handler for backtracing * Add async testing workflow * Update systick example * Fix S2 examples * Update xtensa-toolchain * set rustflags for s2 target * Disable systick for esp32s2 until we can fix the noted issues * review improvements - Fix intr prio array being off by one - emabssy time prio interrupt set to max prio - use cfg instead of feature for systick detection * Update example time delays
114 lines
3.0 KiB
Rust
114 lines
3.0 KiB
Rust
//! This shows how to use RTC memory.
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//! RTC memory is retained during resets and during most sleep modes.
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//! Initialized memory is always re-initialized on startup.
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//! Uninitialzed memory isn't initialized on startup and can be used to keep
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//! data during resets. Zeroed memory is initialized to zero on startup.
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//! We can also run code from RTC memory.
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#![no_std]
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#![no_main]
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use esp32s2_hal::{
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clock::ClockControl,
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macros::ram,
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pac::Peripherals,
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prelude::*,
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timer::TimerGroup,
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};
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use esp_backtrace as _;
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use esp_println::println;
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use xtensa_atomic_emulation_trap as _;
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use nb::block;
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use xtensa_lx_rt::entry;
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#[ram(rtc_fast)]
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static mut SOME_INITED_DATA: [u8; 2] = [0xaa, 0xbb];
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#[ram(rtc_fast, uninitialized)]
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static mut SOME_UNINITED_DATA: [u8; 2] = [0; 2];
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#[ram(rtc_fast, zeroed)]
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static mut SOME_ZEROED_DATA: [u8; 8] = [0; 8];
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take().unwrap();
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let system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut timer0 = timer_group0.timer0;
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let mut wdt = timer_group0.wdt;
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// Disable MWDT flash boot protection
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wdt.disable();
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// The RWDT flash boot protection remains enabled and it being triggered is part
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// of the example
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timer0.start(1u64.secs());
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println!(
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"IRAM function located at {:p}",
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function_in_ram as *const ()
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);
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unsafe {
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println!("SOME_INITED_DATA {:x?}", SOME_INITED_DATA);
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println!("SOME_UNINITED_DATA {:x?}", SOME_UNINITED_DATA);
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println!("SOME_ZEROED_DATA {:x?}", SOME_ZEROED_DATA);
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SOME_INITED_DATA[0] = 0xff;
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SOME_ZEROED_DATA[0] = 0xff;
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println!("SOME_INITED_DATA {:x?}", SOME_INITED_DATA);
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println!("SOME_UNINITED_DATA {:x?}", SOME_UNINITED_DATA);
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println!("SOME_ZEROED_DATA {:x?}", SOME_ZEROED_DATA);
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if SOME_UNINITED_DATA[0] != 0 {
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SOME_UNINITED_DATA[0] = 0;
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SOME_UNINITED_DATA[1] = 0;
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}
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if SOME_UNINITED_DATA[1] == 0xff {
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SOME_UNINITED_DATA[1] = 0;
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}
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println!("Counter {}", SOME_UNINITED_DATA[1]);
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SOME_UNINITED_DATA[1] += 1;
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}
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println!(
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"RTC_FAST function located at {:p}",
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function_in_rtc_ram as *const ()
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);
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println!("Result {}", function_in_rtc_ram());
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loop {
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function_in_ram();
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block!(timer0.wait()).unwrap();
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}
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}
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#[ram]
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fn function_in_ram() {
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println!("Hello world!");
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}
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#[ram(rtc_fast)]
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fn function_in_rtc_ram() -> u32 {
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42
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}
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#[xtensa_lx_rt::exception]
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fn exception(cause: xtensa_lx_rt::exception::ExceptionCause, frame: xtensa_lx_rt::exception::Context) {
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use esp_println::*;
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println!("\n\nException occured {:?} {:x?}", cause, frame);
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let backtrace = esp_backtrace::arch::backtrace();
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for b in backtrace.iter() {
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if let Some(addr) = b {
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println!("0x{:x}", addr)
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}
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}
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}
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