25 lines
499 B
Rust
25 lines
499 B
Rust
#![no_main]
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#![no_std]
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use core::fmt::Write;
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use cortex_m::asm;
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use cortex_m_rt::entry;
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use cortex_m_semihosting as semihosting;
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use panic_halt as _;
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#[entry]
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fn main() -> ! {
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let x = 42;
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loop {
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asm::nop();
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// write something through semihosting interface
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let mut hstdout = semihosting::hio::hstdout().unwrap();
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let _ = write!(hstdout, "x = {}\n", x);
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// exit from qemu
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semihosting::debug::exit(semihosting::debug::EXIT_SUCCESS);
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}
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}
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