154 lines
3.8 KiB
Rust
154 lines
3.8 KiB
Rust
//! Blinks the LED on a Pico board
|
|
//!
|
|
//! This will blink an LED attached to GP25, which is the pin the Pico uses for the on-board LED.
|
|
#![no_std]
|
|
#![no_main]
|
|
|
|
use bsp::entry;
|
|
use defmt::*;
|
|
use defmt_rtt as _;
|
|
use embedded_hal::digital::v2::OutputPin;
|
|
use panic_probe as _;
|
|
|
|
// Provide an alias for our BSP so we can switch targets quickly.
|
|
// Uncomment the BSP you included in Cargo.toml, the rest of the code does not need to change.
|
|
use rp_pico as bsp;
|
|
// use sparkfun_pro_micro_rp2040 as bsp;
|
|
|
|
use bsp::hal::{
|
|
clocks::{init_clocks_and_plls, Clock},
|
|
pac,
|
|
sio::Sio,
|
|
watchdog::Watchdog,
|
|
};
|
|
|
|
fn toggle_clock<PIN>(clock_pin: &mut PIN, delay: &mut cortex_m::delay::Delay)
|
|
where
|
|
PIN: OutputPin,
|
|
{
|
|
clock_pin.set_high();
|
|
delay.delay_ms(1);
|
|
clock_pin.set_low();
|
|
delay.delay_ms(1);
|
|
}
|
|
|
|
fn shift_out_bits<CLK_PIN, DATA_PIN>(
|
|
data: u32,
|
|
len: u8,
|
|
clock_pin: &mut CLK_PIN,
|
|
data_pin: &mut DATA_PIN,
|
|
delay: &mut cortex_m::delay::Delay,
|
|
) where
|
|
CLK_PIN: OutputPin,
|
|
DATA_PIN: OutputPin,
|
|
{
|
|
for i in 0..len {
|
|
if data & (1 << (len - i - 1) as u32) != 0 {
|
|
data_pin.set_high();
|
|
} else {
|
|
data_pin.set_low();
|
|
}
|
|
toggle_clock(clock_pin, delay);
|
|
}
|
|
}
|
|
|
|
#[entry]
|
|
fn main() -> ! {
|
|
info!("Program start");
|
|
let mut pac = pac::Peripherals::take().unwrap();
|
|
let core = pac::CorePeripherals::take().unwrap();
|
|
let mut watchdog = Watchdog::new(pac.WATCHDOG);
|
|
let sio = Sio::new(pac.SIO);
|
|
|
|
// External high-speed crystal on the pico board is 12Mhz
|
|
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());
|
|
|
|
let pins = bsp::Pins::new(
|
|
pac.IO_BANK0,
|
|
pac.PADS_BANK0,
|
|
sio.gpio_bank0,
|
|
&mut pac.RESETS,
|
|
);
|
|
|
|
let mut led_pin = pins.led.into_push_pull_output();
|
|
|
|
let mut row_data_pin = pins.gpio2.into_push_pull_output();
|
|
let mut row_clock_pin = pins.gpio3.into_push_pull_output();
|
|
|
|
let mut col_data_pin = pins.gpio4.into_push_pull_output();
|
|
let mut col_clock_pin = pins.gpio5.into_push_pull_output();
|
|
|
|
let mut white_pin = pins.gpio6.into_push_pull_output();
|
|
let mut black_pin = pins.gpio7.into_push_pull_output();
|
|
let mut strobe_pin = pins.gpio8.into_push_pull_output();
|
|
|
|
loop {
|
|
for x in 0..24 {
|
|
for y in 0..16 {
|
|
shift_out_bits(
|
|
1 << y,
|
|
16,
|
|
&mut row_clock_pin,
|
|
&mut row_data_pin,
|
|
&mut delay,
|
|
);
|
|
|
|
shift_out_bits(
|
|
1 << x,
|
|
24,
|
|
&mut col_clock_pin,
|
|
&mut col_data_pin,
|
|
&mut delay,
|
|
);
|
|
|
|
black_pin.set_high();
|
|
strobe_pin.set_high();
|
|
delay.delay_ms(20);
|
|
strobe_pin.set_low();
|
|
black_pin.set_low();
|
|
|
|
delay.delay_ms(10);
|
|
}
|
|
}
|
|
|
|
led_pin.set_high().unwrap();
|
|
|
|
for y in 0..24 {
|
|
shift_out_bits(0, 16, &mut row_clock_pin, &mut row_data_pin, &mut delay);
|
|
|
|
shift_out_bits(
|
|
1 << y,
|
|
24,
|
|
&mut col_clock_pin,
|
|
&mut col_data_pin,
|
|
&mut delay,
|
|
);
|
|
|
|
white_pin.set_high();
|
|
strobe_pin.set_high();
|
|
delay.delay_ms(20);
|
|
strobe_pin.set_low();
|
|
white_pin.set_low();
|
|
|
|
delay.delay_ms(10);
|
|
}
|
|
|
|
led_pin.set_low().unwrap();
|
|
}
|
|
}
|
|
|
|
// End of file
|