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#![no_std]
pub use atsamd_hal as hal;
#[cfg(feature = "rt")]
pub use cortex_m_rt::entry;
use hal::clock::GenericClockController;
pub use hal::ehal;
pub use hal::pac;
use hal::sercom::{
v2::{uart, Sercom0, Sercom4},
I2CMaster0,
};
use hal::time::Hertz;
#[cfg(feature = "usb")]
use hal::usb::{usb_device::bus::UsbBusAllocator, UsbBus};
use spi::Pads;
use crate::hal::sercom::v2::spi;
use crate::hal::sercom::v2::uart::{BaudMode, Oversampling};
pub use pins::*;
/// Definitions related to pins and pin aliases
pub mod pins {
use super::hal;
hal::bsp_pins!(
PA02 {
/// Pin A0/D0/DAC
name: a0
}
PA04 {
/// Pin A1/D1
name: a1
}
PA10 {
/// Pin A2/D2
name: a2
}
PA11 {
/// Pin A3/D3
name: a3
}
PA08 {
/// Pin A4/D4/SDA
name: a4
aliases: {
AlternateC: Sda
AlternateC: A4Sercom0Pad0
}
}
PA09 {
/// Pin A5/D5/SCL
name: a5
aliases: {
AlternateC: Scl
AlternateC: A5Sercom0Pad1
}
}
PB08 {
/// Pin A6/D6/TX
name: a6
aliases: {
AlternateD: UartTx
}
}
PB09 {
/// Pin A7/D7/RX
name: a7
aliases: {
AlternateD: UartRx
}
}
PA07 {
/// Pin A8/D8/SCK
name: a8
aliases: {
AlternateD: Sclk
}
}
PA05 {
/// Pin A9/D9/MISO
name: a9
aliases: {
AlternateD: Miso
}
}
PA06 {
/// Pin A10/D10/MOSI
name: a10
aliases: {
AlternateD: Mosi
}
}
PA17 {
/// On-board yellow 'L' LED
name: led0
aliases: {
PushPullOutput: Led0
}
}
PA18 {
/// On-board blue 'RX' LED
name: led1
aliases: {
PushPullOutput: Led1
}
}
PA19 {
/// On-board blue 'TX' LED
name: led2
aliases: {
PushPullOutput: Led2
}
}
PA24 {
/// The USB D- pad
name: usb_dm
aliases: {
AlternateG: UsbDm
}
}
PA25 {
/// The USB D+ pad
name: usb_dp
aliases: {
AlternateG: UsbDp
}
}
);
}
/// UART pads for the labelled RX & TX pins
pub type UartPads = uart::Pads<Sercom4, UartRx, UartTx>;
/// UART device for the labelled RX & TX pins
pub type Uart = uart::Uart<uart::Config<UartPads>, uart::Duplex>;
/// Convenience for setting up the labelled RX, TX pins to
/// operate as a UART device running at the specified baud.
pub fn uart(
clocks: &mut GenericClockController,
baud: impl Into<Hertz>,
sercom4: pac::SERCOM4,
pm: &mut pac::PM,
uart_rx: impl Into<UartRx>,
uart_tx: impl Into<UartTx>,
) -> Uart {
let gclk0 = clocks.gclk0();
let clock = &clocks.sercom4_core(&gclk0).unwrap();
let baud = baud.into();
let pads = uart::Pads::default().rx(uart_rx.into()).tx(uart_tx.into());
uart::Config::new(pm, sercom4, pads, clock.freq())
.baud(baud, BaudMode::Fractional(Oversampling::Bits16))
.enable()
}
/// I2C master for the labelled SDA & SCL pins
pub type I2C = I2CMaster0<Sda, Scl>;
/// Convenience for setting up the labelled SDA, SCL pins to
/// operate as an I2C master running at the specified frequency.
pub fn i2c_master(
clocks: &mut GenericClockController,
baud: impl Into<Hertz>,
sercom0: pac::SERCOM0,
pm: &mut pac::PM,
sda: impl Into<Sda>,
scl: impl Into<Scl>,
) -> I2C {
let gclk0 = clocks.gclk0();
let clock = &clocks.sercom0_core(&gclk0).unwrap();
let baud = baud.into();
let sda = sda.into();
let scl = scl.into();
I2CMaster0::new(clock, baud, sercom0, pm, sda, scl)
}
/// SPI pads for the labelled SPI peripheral
///
/// You can use these pads with other, user-defined [`spi::Config`]urations.
pub type SpiPads = Pads<Sercom0, Miso, Mosi, Sclk>;
/// SPI master for the labelled SPI peripheral
pub type Spi = spi::Spi<spi::Config<SpiPads>, spi::Duplex>;
/// Convenience for setting up the labelled SPI peripheral.
/// This powers up SERCOM0 and configures it for use as an
/// SPI Master in SPI Mode 0.
pub fn spi_master(
clocks: &mut GenericClockController,
baud: impl Into<Hertz>,
sercom0: pac::SERCOM0,
pm: &mut pac::PM,
sclk: impl Into<Sclk>,
mosi: impl Into<Mosi>,
miso: impl Into<Miso>,
) -> Spi {
let gclk0 = clocks.gclk0();
let clock = clocks.sercom4_core(&gclk0).unwrap();
let freq = clock.freq();
let (miso, mosi, sclk) = (miso.into(), mosi.into(), sclk.into());
let pads = Pads::default().data_in(miso).data_out(mosi).sclk(sclk);
spi::Config::new(pm, sercom0, pads, freq)
.baud(baud)
.spi_mode(spi::MODE_0)
.enable()
}
#[cfg(feature = "usb")]
/// Convenience function for setting up USB
pub fn usb_allocator(
usb: pac::USB,
clocks: &mut GenericClockController,
pm: &mut pac::PM,
dm: impl Into<UsbDm>,
dp: impl Into<UsbDp>,
) -> UsbBusAllocator<UsbBus> {
let gclk0 = clocks.gclk0();
let clock = &clocks.usb(&gclk0).unwrap();
let (dm, dp) = (dm.into(), dp.into());
UsbBusAllocator::new(UsbBus::new(clock, pm, dm, dp, usb))
}