mirror of
https://github.com/esp-rs/esp-hal.git
synced 2025-10-02 06:40:47 +00:00
f22cd7370d
* Add ESP ROM CRC and fallbacks to HAL * Cargo fmt * Add CRC examples * Cargo fmt * Cargo fmt and clippy (all) * Update CHANGELOG.md
79 lines
2.2 KiB
Rust
79 lines
2.2 KiB
Rust
//! This shows example usage of the CRC functions in ROM
|
|
|
|
#![no_std]
|
|
#![no_main]
|
|
|
|
use core::fmt::Write;
|
|
|
|
use esp32s2_hal::{
|
|
clock::ClockControl,
|
|
peripherals::Peripherals,
|
|
prelude::*,
|
|
rom::crc,
|
|
timer::TimerGroup,
|
|
Rtc,
|
|
Uart,
|
|
};
|
|
use esp_backtrace as _;
|
|
use nb::block;
|
|
|
|
#[entry]
|
|
fn main() -> ! {
|
|
let peripherals = Peripherals::take();
|
|
let mut system = peripherals.SYSTEM.split();
|
|
let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
|
|
|
|
let timer_group0 = TimerGroup::new(
|
|
peripherals.TIMG0,
|
|
&clocks,
|
|
&mut system.peripheral_clock_control,
|
|
);
|
|
let mut timer0 = timer_group0.timer0;
|
|
let mut wdt = timer_group0.wdt;
|
|
let mut rtc = Rtc::new(peripherals.RTC_CNTL);
|
|
let mut serial0 = Uart::new(peripherals.UART0, &mut system.peripheral_clock_control);
|
|
|
|
// Disable MWDT and RWDT (Watchdog) flash boot protection
|
|
wdt.disable();
|
|
rtc.rwdt.disable();
|
|
|
|
timer0.start(1u64.secs());
|
|
|
|
let data = "123456789";
|
|
|
|
writeln!(
|
|
serial0,
|
|
"Performing CRC calculations on test string \"{data}\""
|
|
)
|
|
.unwrap();
|
|
|
|
loop {
|
|
let crc_hdlc = crc::crc32_le(!0xffffffff, data.as_ref());
|
|
let crc_bzip2 = crc::crc32_be(!0xffffffff, data.as_ref());
|
|
let crc_mpeg2 = !crc::crc32_be(!0xffffffff, data.as_ref());
|
|
let crc_cksum = crc::crc32_be(!0, data.as_ref());
|
|
let crc_kermit = !crc::crc16_le(!0, data.as_ref());
|
|
let crc_genibus = crc::crc16_be(!0xffff, data.as_ref());
|
|
let crc_rohc = !crc::crc8_le(!0xff, data.as_ref());
|
|
let crc_smbus = !crc::crc8_be(!0, data.as_ref());
|
|
|
|
assert_eq!(crc_hdlc, 0xcbf43926);
|
|
assert_eq!(crc_bzip2, 0xfc891918);
|
|
assert_eq!(crc_mpeg2, 0x0376e6e7);
|
|
assert_eq!(crc_cksum, 0x765e7680);
|
|
assert_eq!(crc_kermit, 0x2189);
|
|
assert_eq!(crc_genibus, 0xd64e);
|
|
assert_eq!(crc_rohc, 0xd0);
|
|
assert_eq!(crc_smbus, 0xf4);
|
|
|
|
writeln!(
|
|
serial0,
|
|
"{:08x} {:08x} {:08x} {:08x} {:04x} {:04x} {:02x} {:02x}",
|
|
crc_hdlc, crc_bzip2, crc_mpeg2, crc_cksum, crc_kermit, crc_genibus, crc_rohc, crc_smbus
|
|
)
|
|
.unwrap();
|
|
|
|
block!(timer0.wait()).unwrap();
|
|
}
|
|
}
|