48 lines
1.3 KiB
Rust
48 lines
1.3 KiB
Rust
//! Blinky examples using only the PAC
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//!
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//! Additional note on LEDs:
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//! Pulling the GPIOs low makes the LEDs blink. See REB1
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//! schematic for more details.
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#![no_main]
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#![no_std]
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use cortex_m_rt::entry;
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use panic_halt as _;
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use va108xx_hal::pac;
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// REB LED pin definitions. All on port A
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const LED_D2: u32 = 1 << 10;
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const LED_D3: u32 = 1 << 7;
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const LED_D4: u32 = 1 << 6;
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#[entry]
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fn main() -> ! {
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let dp = pac::Peripherals::take().unwrap();
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// Enable all peripheral clocks
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dp.sysconfig
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.peripheral_clk_enable()
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.modify(|_, w| unsafe { w.bits(0xffffffff) });
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dp.porta
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.dir()
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.modify(|_, w| unsafe { w.bits(LED_D2 | LED_D3 | LED_D4) });
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dp.porta
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.datamask()
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.modify(|_, w| unsafe { w.bits(LED_D2 | LED_D3 | LED_D4) });
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for _ in 0..10 {
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dp.porta
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.clrout()
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.write(|w| unsafe { w.bits(LED_D2 | LED_D3 | LED_D4) });
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cortex_m::asm::delay(5_000_000);
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dp.porta
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.setout()
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.write(|w| unsafe { w.bits(LED_D2 | LED_D3 | LED_D4) });
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cortex_m::asm::delay(5_000_000);
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}
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loop {
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dp.porta
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.togout()
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.write(|w| unsafe { w.bits(LED_D2 | LED_D3 | LED_D4) });
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cortex_m::asm::delay(25_000_000);
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}
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}
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