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#![no_std]
#![no_main]
use core::mem::MaybeUninit;
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::usart::{Config, InterruptHandler, Uart};
use embassy_stm32::{SharedData, bind_interrupts, peripherals};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs{
USART1 => InterruptHandler<peripherals::USART1>;
LPUART1 => InterruptHandler<peripherals::LPUART1>;
});
#[unsafe(link_section = ".shared_data")]
static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
/*
Pass Incoming data from LPUART1 to USART1
Example is written for the LoRa-E5 mini v1.0,
but can be surely changed for your needs.
*/
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.sys = embassy_stm32::rcc::Sysclk::HSE;
let p = embassy_stm32::init_primary(config, &SHARED_DATA);
defmt::info!("Starting system");
let mut config1 = Config::default();
config1.baudrate = 9600;
let mut config2 = Config::default();
config2.baudrate = 9600;
//RX/TX connected to USB/UART Bridge on LoRa-E5 mini v1.0
let mut usart1 = Uart::new(p.USART1, p.PB7, p.PB6, Irqs, p.DMA1_CH3, p.DMA1_CH4, config1).unwrap();
//RX1/TX1 (LPUART) on LoRa-E5 mini v1.0
let mut usart2 = Uart::new(p.LPUART1, p.PC0, p.PC1, Irqs, p.DMA1_CH5, p.DMA1_CH6, config2).unwrap();
unwrap!(usart1.write(b"Hello Embassy World!\r\n").await);
unwrap!(usart2.write(b"Hello Embassy World!\r\n").await);
let mut buf = [0u8; 300];
loop {
let result = usart2.read_until_idle(&mut buf).await;
match result {
Ok(size) => {
match usart1.write(&buf[0..size]).await {
Ok(()) => {
//Write suc.
}
Err(..) => {
//Wasn't able to write
}
}
}
Err(_err) => {
//Ignore eg. framing errors
}
}
}
}
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