db409ffe7b
* Unify the system peripheral Whilst the PCR, SYSTEM and DPORT peripherals are different, we currently use them all in the same way. This PR unifies the peripheral name in the hal to `SYSTEM`. The idea is that they all do the same sort of thing, so we can collect them under the same name, and later down the line we can being to expose differences under an extended API. The benifits to this are imo quite big, the examples now are all identical, which makes things easier for esp-wifi, and paves a path towards the multichip hal. Why not do this in the PAC? Imo the pac should be as close to the hardware as possible, and the HAL is where we should abstractions such as this. * changelog
100 lines
2.8 KiB
Rust
100 lines
2.8 KiB
Rust
//! This shows debug-assist
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//!
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//! Uncomment the functionality you want to test
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#![no_std]
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#![no_main]
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use core::cell::RefCell;
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use critical_section::Mutex;
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use esp32h2_hal::{
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assist_debug::DebugAssist,
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clock::ClockControl,
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interrupt,
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peripherals::{self, Peripherals},
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prelude::*,
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riscv,
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};
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use esp_backtrace as _;
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use esp_println::println;
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static DA: Mutex<RefCell<Option<DebugAssist>>> = Mutex::new(RefCell::new(None));
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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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 mut da = DebugAssist::new(peripherals.ASSIST_DEBUG);
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// Uncomment the functionality you want to test
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// We use a 0x1200 wide SP and 0x100 regions, and RAM ends at 0x40850000
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// Monitor the SP so as to prevent stack overflow or erroneous push/pop. When
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// the SP exceeds the minimum or maximum threshold, the module will record the
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// PC pointer and generate an interrupt
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// da.enable_sp_monitor(0x4084ee00, 0x40850000);
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// Monitor reads/writes performed by the CPU over data bus and peripheral bus
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// in a certain address space, i.e., memory region. Whenever the bus reads or
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// writes in the specified address space, an interrupt will be triggered
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// da.enable_region0_monitor(0x4084ee00, 0x4084ef00, true, true);
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da.enable_region1_monitor(0x4084ee00, 0x4084ef00, true, true);
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critical_section::with(|cs| DA.borrow_ref_mut(cs).replace(da));
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interrupt::enable(
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peripherals::Interrupt::ASSIST_DEBUG,
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interrupt::Priority::Priority3,
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)
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.unwrap();
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unsafe {
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riscv::interrupt::enable();
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}
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eat_up_stack(0);
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loop {}
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}
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#[allow(unconditional_recursion)]
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fn eat_up_stack(v: u32) {
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println!("Iteration {v}");
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eat_up_stack(v + 1);
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}
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#[interrupt]
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fn ASSIST_DEBUG() {
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critical_section::with(|cs| {
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println!("\n\nDEBUG_ASSIST interrupt");
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let mut da = DA.borrow_ref_mut(cs);
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let da = da.as_mut().unwrap();
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if da.is_sp_monitor_interrupt_set() {
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println!("SP MONITOR TRIGGERED");
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da.clear_sp_monitor_interrupt();
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let pc = da.get_sp_monitor_pc();
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println!("PC = 0x{:x}", pc);
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}
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if da.is_region0_monitor_interrupt_set() {
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println!("REGION0 MONITOR TRIGGERED");
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da.clear_region0_monitor_interrupt();
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let pc = da.get_region_monitor_pc();
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println!("PC = 0x{:x}", pc);
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}
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if da.is_region1_monitor_interrupt_set() {
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println!("REGION1 MONITOR TRIGGERED");
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da.clear_region1_monitor_interrupt();
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let pc = da.get_region_monitor_pc();
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println!("PC = 0x{:x}", pc);
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}
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loop {}
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});
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}
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