src/log.rs


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use core::fmt::Write;

use gd32vf103xx_hal::{
    pac::USART1,
    serial::Tx,
};

static mut TX: Option<Tx<USART1>> = None;

pub unsafe fn new(tx: Tx<USART1>) {
    TX = Some(tx);
}

pub unsafe fn log(str: &str) {
    TX.as_mut().map(|tx| tx.write_str(str));
}