monorepo/pico-blink/src/main.rs

247 lines
6.1 KiB
Rust
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#![no_main]
#![no_std]
use embedded_hal::blocking::spi::Write;
use embedded_hal::digital::v2::OutputPin;
use fugit::RateExtU32;
use panic_halt as _;
use rp_pico::entry;
use rp_pico::hal::gpio::{FunctionSio, PinId, PullType, SioOutput};
use rp_pico::{
hal,
hal::prelude::*,
hal::{
clocks::{init_clocks_and_plls, Clock},
gpio::Pin,
pac,
spi::Spi,
watchdog::Watchdog,
},
};
fn send_byte<I, J, P>(
data: &mut Pin<I, FunctionSio<SioOutput>, P>,
clock: &mut Pin<J, FunctionSio<SioOutput>, P>,
delay: &mut cortex_m::delay::Delay,
byte: u8,
) where
I: PinId,
J: PinId,
P: PullType,
{
(0..8).for_each(|bit| {
if byte & (1 << (8 - bit)) > 0 {
data.set_high();
} else {
data.set_low();
}
clock.set_high();
delay.delay_us(100);
clock.set_low();
delay.delay_us(100);
});
clock.set_low();
}
fn send_start<I, J, P>(
data: &mut Pin<I, FunctionSio<SioOutput>, P>,
clock: &mut Pin<J, FunctionSio<SioOutput>, P>,
delay: &mut cortex_m::delay::Delay,
) where
I: PinId,
J: PinId,
P: PullType,
{
send_byte(data, clock, delay, 0);
send_byte(data, clock, delay, 0);
send_byte(data, clock, delay, 0);
send_byte(data, clock, delay, 0);
}
fn send_term<I, J, P>(
data: &mut Pin<I, FunctionSio<SioOutput>, P>,
clock: &mut Pin<J, FunctionSio<SioOutput>, P>,
delay: &mut cortex_m::delay::Delay,
) where
I: PinId,
J: PinId,
P: PullType,
{
send_byte(data, clock, delay, 0xff);
send_byte(data, clock, delay, 0xff);
send_byte(data, clock, delay, 0xff);
send_byte(data, clock, delay, 0xff);
}
fn send<I, J, P>(
data: &mut Pin<I, FunctionSio<SioOutput>, P>,
clock: &mut Pin<J, FunctionSio<SioOutput>, P>,
delay: &mut cortex_m::delay::Delay,
values: &[u8],
) where
I: PinId,
J: PinId,
P: PullType,
{
send_start(data, clock, delay);
for val in values {
send_byte(data, clock, delay, *val);
}
send_term(data, clock, delay);
clock.set_low();
}
#[entry]
fn main() -> ! {
let mut pac = pac::Peripherals::take().unwrap();
let core = pac::CorePeripherals::take().unwrap();
let sio = hal::Sio::new(pac.SIO);
let mut watchdog = Watchdog::new(pac.WATCHDOG);
let pins = rp_pico::Pins::new(
pac.IO_BANK0,
pac.PADS_BANK0,
sio.gpio_bank0,
&mut pac.RESETS,
);
let external_xtal_freq_hz = 12_000_000u32;
let clocks = init_clocks_and_plls(
external_xtal_freq_hz,
pac.XOSC,
pac.CLOCKS,
pac.PLL_SYS,
pac.PLL_USB,
&mut pac.RESETS,
&mut watchdog,
)
.ok()
.unwrap();
let mut delay = cortex_m::delay::Delay::new(core.SYST, clocks.system_clock.freq().to_Hz());
/*
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let mut spi_clk = pins.gpio10.into_function();
let mut spi_sdo = pins.gpio11.into_function();
let spi = Spi::<_, _, _, 8>::new(pac.SPI1, (spi_sdo, spi_clk));
let mut spi = spi.init(
&mut pac.RESETS,
clocks.peripheral_clock.freq(),
1.MHz(),
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embedded_hal::spi::MODE_1,
);
*/
let mut led_pin = pins.led.into_push_pull_output();
let mut blue_pin = pins.gpio3.into_push_pull_output();
led_pin.set_high().unwrap();
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delay.delay_ms(500);
led_pin.set_low().unwrap();
let mut spi_clk = pins.gpio10.into_push_pull_output();
let mut spi_sdo = pins.gpio11.into_push_pull_output();
spi_clk.set_low();
spi_sdo.set_low();
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let bits_1 = &[
0, 0, 0, 0,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xff, 0xff, 0xff, 0xff,
];
let bits_2 = &[
0, 0, 0, 0,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff,
];
let bits_3 = &[
0, 0, 0, 0,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xe1, 0x00, 0x00, 0x80,
0xe1, 0x80, 0x00, 0x00,
0xe1, 0x00, 0x80, 0x00,
0xff, 0xff, 0xff, 0xff,
];
let a = 15 / 2;
loop {
send(
&mut spi_sdo,
&mut spi_clk,
&mut delay,
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bits_1,
);
spi_clk.set_low();
spi_sdo.set_low();
delay.delay_ms(500);
send(
&mut spi_sdo,
&mut spi_clk,
&mut delay,
bits_2,
);
spi_clk.set_low();
spi_sdo.set_low();
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delay.delay_ms(500);
send(
&mut spi_sdo,
&mut spi_clk,
&mut delay,
bits_3,
);
spi_clk.set_low();
spi_sdo.set_low();
delay.delay_ms(500);
/*
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spi.write(bits_1);
delay.delay_ms(500);
spi.write(bits_2);
delay.delay_ms(500);
spi.write(bits_3);
delay.delay_ms(500);
*/
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/*
led_pin.set_high().unwrap();
blue_pin.set_low().unwrap();
delay.delay_ms(500);
led_pin.set_low().unwrap();
blue_pin.set_high().unwrap();
delay.delay_ms(500);
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*/
}
}