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#![no_std]
#![deny(missing_docs)]
//! Board support crate for Adafruit's Grand Central M4 Express,
//! an ATSAMD51-based board in an Arduino Mega form factor.
pub use atsamd_hal as hal;
pub use hal::ehal;
pub use hal::pac;
#[cfg(feature = "rt")]
pub use cortex_m_rt::entry;
use hal::{
clock::GenericClockController,
qspi::{OneShot, Qspi},
sercom::{
i2c, spi,
uart::{self, BaudMode, Oversampling},
IoSet2,
},
time::Hertz,
};
use pac::MCLK;
#[cfg(feature = "usb")]
use hal::usb::{usb_device::bus::UsbBusAllocator, UsbBus};
hal::bsp_peripherals!(
SERCOM0 { UartSercom }
SERCOM1 { UartSercom2 }
SERCOM5 { UartSercom3 }
SERCOM3 { I2cSercom }
SERCOM6 { I2cSercom2 }
SERCOM7 { SpiSercom }
);
hal::bsp_pins!(
PA02 {
/// Analog pin 0
/// Can act as a true analog output as it has a DAC (which is not
/// currently supported by this hal) as well as input.
name: a0
}
PA05 {
/// Analog pin 1
/// Can act as a true analog output as it has a DAC (which is not
/// currently supported by this hal) as well as input.
name: a1
}
PB03 {
/// Analog pin 2
name: a2
}
PC00 {
/// Analog pin 3
name: a3
}
PC01 {
/// Analog pin 4
name: a4
}
PC02 {
/// Analog pin 5
name: a5
}
PC03 {
/// Analog pin 6
name: a6
}
PB04 {
/// Analog pin 7
name: a7
}
PB05 {
/// Analog pin 8
name: a8
}
PB06 {
/// Analog pin 9
name: a9
}
PB07 {
/// Analog pin 10
name: a10
}
PB08 {
/// Analog pin 11
name: a11
}
PB09 {
/// Analog pin 12
name: a12
}
PA04 {
/// Analog pin 13
name: a13
}
PA06 {
/// Analog pin 14
name: a14
}
PA07 {
/// Analog pin 15
name: a15
}
PB25 {
/// Digital pin 0, rx
name: d0
aliases: {
AlternateC: UartRx,
}
}
PB24 {
/// Digital pin 1, tx
name: d1
aliases: {
AlternateC: UartTx,
}
}
PC18 {
/// Digital pin 2
name: d2
}
PC19 {
/// Digital pin 3
name: d3
}
PC20 {
/// Digital pin 4
name: d4
}
PC21 {
/// Digital pin 5
name: d5
}
PD20 {
/// Digital pin 6
name: d6
}
PD21 {
/// Digital pin 7
name: d7
}
PB18 {
/// Digital pin 8
name: d8
}
PB02 {
/// Digital pin 9
name: d9
}
PB22 {
/// Digital pin 10
name: d10
}
PB23 {
/// Digital pin 11
name: d11
}
PB00 {
/// Digital pin 12
name: d12
}
PB01 {
/// Digital pin 13, red LED
name: d13
aliases: {
PushPullOutput: RedLed,
}
}
PB16 {
/// Digital pin 14, tx3
name: d14
aliases: {
AlternateC: UartTx3,
}
}
PB17 {
/// Digital pin 15, rx3
name: d15
aliases: {
AlternateC: UartRx3,
}
}
PC22 {
/// Digital pin 16, tx2
name: d16
aliases: {
AlternateC: UartTx2,
}
}
PC23 {
/// Digital pin 17, rx2
name: d17
aliases: {
AlternateC: UartRx2,
}
}
PB12 {
/// Digital pin 18, tx1
name: d18
aliases: {
AlternateC: UartTx1,
}
}
PB13 {
/// Digital pin 19, rx1
name: d19
aliases: {
AlternateC: UartRx1,
}
}
PB20 {
/// Digital pin 20, I2C data line
name: d20
aliases: {
AlternateC: Sda,
}
}
PB21 {
/// Digital pin 21, I2C clock line
name: d21
aliases: {
AlternateC: Scl,
}
}
PD12 {
/// Digital pin 22
name: d22
}
PA15 {
/// Digital pin 23
name: d23
}
PC17 {
/// Digital pin 24, I2C clock line 1
name: d24
aliases: {
AlternateC: Scl1,
}
}
PC16 {
/// Digital pin 25, I2C data line 1
name: d25
aliases: {
AlternateC: Sda1,
}
}
PA12 {
/// Digital pin 26
name: d26
}
PA13 {
/// Digital pin 27
name: d27
}
PA14 {
/// Digital pin 28
name: d28
}
PB19 {
/// Digital pin 29
name: d29
}
PA23 {
/// Digital pin 30
name: d30
}
PA22 {
/// Digital pin 31
name: d31
}
PA21 {
/// Digital pin 32
name: d32
}
PA20 {
/// Digital pin 33
name: d33
}
PA19 {
/// Digital pin 34
name: d34
}
PA18 {
/// Digital pin 35
name: d35
}
PA17 {
/// Digital pin 36
name: d36
}
PA16 {
/// Digital pin 37
name: d37
}
PB15 {
/// Digital pin 38
name: d38
}
PB14 {
/// Digital pin 39
name: d39
}
PC13 {
/// Digital pin 40
name: d40
}
PC12 {
/// Digital pin 41
name: d41
}
PC15 {
/// Digital pin 42
name: d42
}
PC14 {
/// Digital pin 43
name: d43
}
PC11 {
/// Digital pin 44
name: d44
}
PC10 {
/// Digital pin 45
name: d45
}
PC06 {
/// Digital pin 46
name: d46
}
PC07 {
/// Digital pin 47
name: d47
}
PC04 {
/// Digital pin 48
name: d48
}
PC05 {
/// Digital pin 49
name: d49
}
PD11 {
/// Digital pin 50, SPI MISO
name: miso
aliases: {
AlternateC: Miso,
}
}
PD08 {
/// Digital pin 51, SPI MOSI
name: mosi
aliases: {
AlternateC: Mosi,
}
}
PD09 {
/// Digital pin 52, SPI SCLK
name: sclk
aliases: {
AlternateC: Sclk,
}
}
PD10 {
/// Digital pin 53
name: d53
}
PA08 {
/// Flash data 0
name: flash_d0
aliases: {
AlternateD: FlashD0,
}
}
PA09 {
/// Flash data 1
name: flash_d1
aliases: {
AlternateD: FlashD1,
}
}
PA10 {
/// Flash data 2
name: flash_d2
aliases: {
AlternateD: FlashD2,
}
}
PA11 {
/// Flash data 3
name: flash_d3
aliases: {
AlternateD: FlashD3,
}
}
PB10 {
/// SPI clock for the external flash
name: flash_sck
aliases: {
AlternateD: FlashSclk,
}
}
PB11 {
/// SPI chip select for the external flash
name: flash_cs
aliases: {
PushPullOutput: FlashCs,
}
}
PC24 {
/// Neopixel data
name: neopixel
}
PC30 {
/// tx LED
name: led_tx
}
PC31 {
/// rx LED
name: led_rx
}
PB26 {
/// SD card SPI MOSI
name: sd_mosi
aliases: {
AlternateC: SdMosi,
}
}
PB29 {
/// SD card SPI MISO
name: sd_miso
aliases: {
AlternateC: SdMiso,
}
}
PB27 {
/// SD card SPI SCLK
name: sd_sclk
aliases: {
AlternateC: SdSclk,
}
}
PB28 {
/// SD card SPI chip select
name: sd_cs
aliases: {
PushPullOutput: SdCs,
}
}
PB31 {
/// SD card detect
name: sd_card_detect
aliases: {
PullUpInput: SdCardDetect,
}
}
PA03 {
/// AREF pin - has 1uF capacitor to ground
name: aref
}
PA24 {
/// The USB D- pad
name: usb_dm
aliases: {
AlternateH: UsbDm,
}
}
PA25 {
/// The USB D+ pad
name: usb_dp
aliases: {
AlternateH: UsbDp,
}
}
);
/// SPI pads for the labelled SPI peripheral
///
/// You can use these pads with other, user-defined [`spi::Config`]urations.
pub type SpiPads = spi::Pads<SpiSercom, IoSet2, Miso, Mosi, Sclk>;
/// SPI master for the labelled SPI peripheral
///
/// This type implements [`FullDuplex<u8>`](ehal::spi::FullDuplex).
pub type Spi = spi::Spi<spi::Config<SpiPads>, spi::Duplex>;
/// Convenience for setting up the 2x3 header block for SPI.
/// This powers up SERCOM7 and configures it for use as an
/// SPI Master in SPI Mode 0.
pub fn spi_master(
clocks: &mut GenericClockController,
baud: impl Into<Hertz>,
sercom7: SpiSercom,
mclk: &mut pac::MCLK,
sclk: impl Into<Sclk>,
mosi: impl Into<Mosi>,
miso: impl Into<Miso>,
) -> Spi {
let gclk0 = clocks.gclk0();
let clock = clocks.sercom7_core(&gclk0).unwrap();
let freq = clock.freq();
let (miso, mosi, sclk) = (miso.into(), mosi.into(), sclk.into());
let pads = spi::Pads::default().data_in(miso).data_out(mosi).sclk(sclk);
spi::Config::new(mclk, sercom7, pads, freq)
.baud(baud)
.spi_mode(spi::MODE_0)
.enable()
}
/// Convenience for setting up the onboard QSPI flash.
/// Enables the clocks for the QSPI peripheral in single data rate mode
/// assuming 120MHz system clock, for 4MHz QSPI mode 0 operation.
#[allow(clippy::too_many_arguments)]
pub fn qspi_master(
mclk: &mut MCLK,
qspi: pac::QSPI,
sclk: impl Into<FlashSclk>,
cs: impl Into<FlashCs>,
data0: impl Into<FlashD0>,
data1: impl Into<FlashD1>,
data2: impl Into<FlashD2>,
data3: impl Into<FlashD3>,
) -> Qspi<OneShot> {
Qspi::new(
mclk,
qspi,
sclk.into(),
cs.into(),
data0.into(),
data1.into(),
data2.into(),
data3.into(),
)
}
/// I2C pads for the labelled I2C peripheral
///
/// You can use these pads with other, user-defined [`i2c::Config`]urations.
pub type I2cPads = i2c::Pads<I2cSercom, IoSet2, Sda, Scl>;
/// I2C master for the labelled I2C peripheral
///
/// This type implements [`Read`](ehal::blocking::i2c::Read),
/// [`Write`](ehal::blocking::i2c::Write) and
/// [`WriteRead`](ehal::blocking::i2c::WriteRead).
pub type I2c = i2c::I2c<i2c::Config<I2cPads>>;
/// 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>,
sercom: I2cSercom,
mclk: &mut pac::MCLK,
sda: impl Into<Sda>,
scl: impl Into<Scl>,
) -> I2c {
let gclk0 = clocks.gclk0();
let clock = &clocks.sercom3_core(&gclk0).unwrap();
let freq = clock.freq();
let baud = baud.into();
let pads = i2c::Pads::new(sda.into(), scl.into());
i2c::Config::new(mclk, sercom, pads, freq)
.baud(baud)
.enable()
}
/// UART Pads for the labelled UART peripheral
pub type UartPads = uart::Pads<UartSercom, IoSet2, 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>,
sercom: UartSercom,
mclk: &mut pac::MCLK,
uart_rx: impl Into<UartRx>,
uart_tx: impl Into<UartTx>,
) -> Uart {
let gclk0 = clocks.gclk0();
let clock = &clocks.sercom0_core(&gclk0).unwrap();
let baud = baud.into();
let pads = uart::Pads::default().rx(uart_rx.into()).tx(uart_tx.into());
uart::Config::new(mclk, sercom, pads, clock.freq())
.baud(baud, BaudMode::Fractional(Oversampling::Bits16))
.enable()
}
#[cfg(feature = "usb")]
/// Convenience function for setting up USB
pub fn usb_allocator(
usb: pac::USB,
clocks: &mut GenericClockController,
mclk: &mut pac::MCLK,
dm: impl Into<UsbDm>,
dp: impl Into<UsbDp>,
) -> UsbBusAllocator<UsbBus> {
use pac::gclk::{genctrl::SRC_A, pchctrl::GEN_A};
clocks.configure_gclk_divider_and_source(GEN_A::GCLK2, 1, SRC_A::DFLL, false);
let usb_gclk = clocks.get_gclk(GEN_A::GCLK2).unwrap();
let usb_clock = &clocks.usb(&usb_gclk).unwrap();
let (dm, dp) = (dm.into(), dp.into());
UsbBusAllocator::new(UsbBus::new(usb_clock, mclk, dm, dp, usb))
}