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https://github.com/esp-rs/esp-hal.git
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162 lines
6.3 KiB
Rust
162 lines
6.3 KiB
Rust
//! This shows a very basic example of running code on the LP core.
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//!
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//! Code on LP core increments a counter and continuously toggles GPIO1. The
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//! current value is printed by the HP core.
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#![no_std]
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#![no_main]
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use esp32c6_hal::{
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clock::ClockControl,
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gpio::lp_gpio::IntoLowPowerPin,
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lp_core,
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peripherals::Peripherals,
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prelude::*,
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timer::TimerGroup,
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Rtc,
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IO,
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};
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use esp_backtrace as _;
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use esp_println::{print, println};
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// 50000000 <_vector_table>:
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// 50000000: 00000013 nop
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// 50000004: 00000013 nop
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// 50000008: 00000013 nop
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// 5000000c: 00000013 nop
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// 50000010: 00000013 nop
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// 50000014: 00000013 nop
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// 50000018: 00000013 nop
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// 5000001c: 00000013 nop
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// 50000020: 00000013 nop
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// 50000024: 00000013 nop
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// 50000028: 00000013 nop
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// 5000002c: 00000013 nop
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// 50000030: 00000013 nop
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// 50000034: 00000013 nop
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// 50000038: 00000013 nop
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// 5000003c: 00000013 nop
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// 50000040: 00000013 nop
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// 50000044: 00000013 nop
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// 50000048: 00000013 nop
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// 5000004c: 00000013 nop
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// 50000050: 00000013 nop
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// 50000054: 00000013 nop
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// 50000058: 00000013 nop
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// 5000005c: 00000013 nop
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// 50000060: 00000013 nop
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// 50000064: 00000013 nop
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// 50000068: 00000013 nop
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// 5000006c: 00000013 nop
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// 50000070: 00000013 nop
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// 50000074: 00000013 nop
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// 50000078: 00000013 nop
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// 5000007c: 00000013 nop
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// 50000080 <_start>:
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// 50000080: 00000517 auipc a0,0x0
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// 50000084: 04050513 addi a0,a0,64 # 500000c0 <data>
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// 50000088: 4585 li a1,1
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// 5000008a: 00b50023 sb a1,0(a0)
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// 5000008e: 600b26b7 lui a3,0x600b2
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// 50000092: 06a1 addi a3,a3,8
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// 50000094: 600b2637 lui a2,0x600b2
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// 50000098: 0611 addi a2,a2,4
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// 5000009a: 4709 li a4,2
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// 5000009c <_loop>:
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// 5000009c: c218 sw a4,0(a2)
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// 5000009e: 000f47b7 lui a5,0xf4
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// 500000a2: 24078793 addi a5,a5,576 # f4240
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// <_vector_table-0x4ff0bdc0>
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// 500000a6 <_wait1>:
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// 500000a6: 17fd addi a5,a5,-1
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// 500000a8: fffd bnez a5,500000a6 <_wait1>
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// 500000aa: 0585 addi a1,a1,1
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// 500000ac: 00b50023 sb a1,0(a0)
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// 500000b0: c298 sw a4,0(a3)
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// 500000b2: 000f47b7 lui a5,0xf4
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// 500000b6: 24078793 addi a5,a5,576 # f4240
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// <_vector_table-0x4ff0bdc0>
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// 500000ba <_wait2>:
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// 500000ba: 17fd addi a5,a5,-1
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// 500000bc: fffd bnez a5,500000ba <_wait2>
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// 500000be: bff9 j 5000009c <_loop>
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// 500000c0 <data>:
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// ...
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const CODE: &[u8] = &[
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
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0x17, 0x05, 0x00, 0x00, 0x13, 0x05, 0x05, 0x04, 0x85, 0x45, 0x23, 0x00, 0xb5, 0x00, 0xb7, 0x26,
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0x0b, 0x60, 0xa1, 0x06, 0x37, 0x26, 0x0b, 0x60, 0x11, 0x06, 0x09, 0x47, 0x18, 0xc2, 0xb7, 0x47,
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0x0f, 0x00, 0x93, 0x87, 0x07, 0x24, 0xfd, 0x17, 0xfd, 0xff, 0x85, 0x05, 0x23, 0x00, 0xb5, 0x00,
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0x98, 0xc2, 0xb7, 0x47, 0x0f, 0x00, 0x93, 0x87, 0x07, 0x24, 0xfd, 0x17, 0xfd, 0xff, 0xf9, 0xbf,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00,
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];
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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let mut system = peripherals.PCR.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let mut rtc = Rtc::new(peripherals.LP_CLKRST);
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let timer_group0 = TimerGroup::new(
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peripherals.TIMG0,
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&clocks,
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&mut system.peripheral_clock_control,
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);
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let mut wdt0 = timer_group0.wdt;
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let timer_group1 = TimerGroup::new(
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peripherals.TIMG1,
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&clocks,
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&mut system.peripheral_clock_control,
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);
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let mut wdt1 = timer_group1.wdt;
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// Disable watchdog timers
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rtc.swd.disable();
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rtc.rwdt.disable();
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wdt0.disable();
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wdt1.disable();
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let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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// configure GPIO 1 as LP output pin
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let mut lp_pin = io.pins.gpio1.into_low_power();
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lp_pin.output_enable(true);
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let mut lp_core = esp32c6_hal::lp_core::LpCore::new(peripherals.LP_CORE);
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lp_core.stop();
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println!("lp core stopped");
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// copy code to LP ram
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let lp_ram = 0x5000_0000 as *mut u8;
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unsafe {
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core::ptr::copy_nonoverlapping(CODE as *const _ as *const u8, lp_ram, CODE.len());
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}
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println!("copied code (len {})", CODE.len());
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// start LP core
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lp_core.run(lp_core::LpCoreWakeupSource::HpCpu);
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println!("lpcore run");
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let data = (0x500000c0) as *mut u32;
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loop {
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print!("Current {:x} \u{000d}", unsafe {
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data.read_volatile()
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});
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}
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}
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