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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::executor::Spawner;
use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
use embassy_stm32::spi::{Config, Spi};
use embassy_stm32::time::Hertz;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
info!("Hello World!");
let mut spi = Spi::new(
p.SPI3,
p.PC10,
p.PC12,
p.PC11,
p.DMA1_CH1,
p.DMA1_CH2,
Hertz(1_000_000),
Config::default(),
);
// These are the pins for the Inventek eS-Wifi SPI Wifi Adapter.
let _boot = Output::new(p.PB12, Level::Low, Speed::VeryHigh);
let _wake = Output::new(p.PB13, Level::Low, Speed::VeryHigh);
let mut reset = Output::new(p.PE8, Level::Low, Speed::VeryHigh);
let mut cs = Output::new(p.PE0, Level::High, Speed::VeryHigh);
let ready = Input::new(p.PE1, Pull::Up);
cortex_m::asm::delay(100_000);
reset.set_high();
cortex_m::asm::delay(100_000);
while ready.is_low() {
info!("waiting for ready");
}
let write = [0x0A; 10];
let mut read = [0; 10];
cs.set_low();
spi.transfer(&mut read, &write).await.ok();
cs.set_high();
info!("xfer {=[u8]:x}", read);
}
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