cpld: auto invoke io update

src/lib.rs

@@ -30,20 +30,22 @@ pub enum Error<E> {
 	CSError,
 	GetRefMutDataError,
 	AttenuatorError,
+	IOUpdateError,
 }
 
 /*
  *	Basic structure for CPLD signal multiplexing
  */
 #[derive(Debug)]
-pub struct CPLDData<SPI, CS0, CS1, CS2> {
+pub struct CPLDData<SPI, CS0, CS1, CS2, GPIO> {
 	pub(crate) spi: SPI,
 	pub(crate) chip_select: (CS0, CS1, CS2),
+	pub(crate) io_update: GPIO,
 }
 
 #[derive(Debug)]
-pub struct CPLD<SPI, CS0, CS1, CS2> {
+pub struct CPLD<SPI, CS0, CS1, CS2, GPIO> {
-	pub(crate) data: cell::RefCell<CPLDData<SPI, CS0, CS1, CS2>>,
+	pub(crate) data: cell::RefCell<CPLDData<SPI, CS0, CS1, CS2, GPIO>>,
 }
 
 pub trait SelectChip {
@@ -51,12 +53,13 @@ pub trait SelectChip {
 	fn select_chip(&mut self, chip: u8) -> Result<(), Self::Error>;
 }
 
-impl<SPI, CS0, CS1, CS2, E> SelectChip for CPLDData<SPI, CS0, CS1, CS2>
+impl<SPI, CS0, CS1, CS2, GPIO, E> SelectChip for CPLDData<SPI, CS0, CS1, CS2, GPIO>
 where
 	SPI: Transfer<u8, Error = E>,
 	CS0: OutputPin,
 	CS1: OutputPin,
 	CS2: OutputPin,
+	GPIO: OutputPin,
 {
 	type Error = Error<E>;
 	fn select_chip(&mut self, chip: u8) -> Result<(), Self::Error> {
@@ -77,17 +80,38 @@ where
 	}
 }
 
-pub trait DoOnGetRefMutData<SPI, CS0, CS1, CS2> {
+trait IssueIOUpdate {
+	type Error;
+	fn issue_io_update(&mut self) -> Result<(), Self::Error>;
+}
+
+impl<SPI, CS0, CS1, CS2, GPIO, E> IssueIOUpdate for CPLDData<SPI, CS0, CS1, CS2, GPIO>
+where
+	SPI: Transfer<u8>,
+	CS0: OutputPin,
+	CS1: OutputPin,
+	CS2: OutputPin,
+	GPIO: OutputPin<Error = E>,
+{
+	type Error = Error<E>;
+
+	fn issue_io_update(&mut self) -> Result<(), Self::Error> {
+		self.io_update.set_high().map_err(|_| Error::IOUpdateError)?;
+		self.io_update.set_low().map_err(|_| Error::IOUpdateError)
+	}
+}
+
+pub trait DoOnGetRefMutData<SPI, CS0, CS1, CS2, GPIO> {
 	fn do_on_get_ref_mut_data<R, E>(
 		&self,
-		f: impl FnOnce(cell::RefMut<CPLDData<SPI, CS0, CS1, CS2>>) -> Result<R, Error<E>>,
+		f: impl FnOnce(cell::RefMut<CPLDData<SPI, CS0, CS1, CS2, GPIO>>) -> Result<R, Error<E>>,
 	) -> Result<R, Error<E>>;
 }
 
-impl<SPI, CS0, CS1, CS2> DoOnGetRefMutData<SPI, CS0, CS1, CS2> for CPLD<SPI, CS0, CS1, CS2> {
+impl<SPI, CS0, CS1, CS2, GPIO> DoOnGetRefMutData<SPI, CS0, CS1, CS2, GPIO> for CPLD<SPI, CS0, CS1, CS2, GPIO> {
 	fn do_on_get_ref_mut_data<R, E>(
 		&self,
-		f: impl FnOnce(cell::RefMut<CPLDData<SPI, CS0, CS1, CS2>>) -> Result<R, Error<E>>,
+		f: impl FnOnce(cell::RefMut<CPLDData<SPI, CS0, CS1, CS2, GPIO>>) -> Result<R, Error<E>>,
 	) -> Result<R, Error<E>> {
 		let dev = self
 			.data
@@ -97,12 +121,13 @@ impl<SPI, CS0, CS1, CS2> DoOnGetRefMutData<SPI, CS0, CS1, CS2> for CPLD<SPI, CS0
 	}
 }
 
-impl<SPI, CS0, CS1, CS2, E> Transfer<u8> for CPLD<SPI, CS0, CS1, CS2>
+impl<SPI, CS0, CS1, CS2, GPIO, E> Transfer<u8> for CPLD<SPI, CS0, CS1, CS2, GPIO>
 where
 	SPI: Transfer<u8, Error = E>,
 	CS0: OutputPin,
 	CS1: OutputPin,
 	CS2: OutputPin,
+	GPIO: OutputPin,
 {
 	type Error = Error<E>;
 
@@ -111,19 +136,21 @@ where
 	}
 }
 
-impl<SPI, CS0, CS1, CS2, E> CPLD<SPI, CS0, CS1, CS2> where
+impl<SPI, CS0, CS1, CS2, GPIO, E> CPLD<SPI, CS0, CS1, CS2, GPIO> where
 	SPI: Transfer<u8, Error = E>,
 	CS0: OutputPin,
 	CS1: OutputPin,
 	CS2: OutputPin,
+	GPIO: OutputPin
 {
 	// Constructor for CPLD
-	pub fn new(spi: SPI, chip_select: (CS0, CS1, CS2)) -> Self {
+	pub fn new(spi: SPI, chip_select: (CS0, CS1, CS2), io_update: GPIO) -> Self {
 
 		// Init data
 		let data = CPLDData {
 			spi,
 			chip_select,
+			io_update,
 		};
 
 		// Init CPLD
@@ -133,13 +160,13 @@ impl<SPI, CS0, CS1, CS2, E> CPLD<SPI, CS0, CS1, CS2> where
 	}
 
 	// Destroy the wrapper, return the CPLD data
-	pub fn destroy(self) -> (SPI, (CS0, CS1, CS2)) {
+	pub fn destroy(self) -> (SPI, (CS0, CS1, CS2), GPIO) {
 		let cpld = self.data.into_inner();
-		(cpld.spi, cpld.chip_select)
+		(cpld.spi, cpld.chip_select, cpld.io_update)
 	}
 
 	// Split SPI into chips, wrapped by Parts struct
-	pub fn split<'a>(&'a self) -> Parts<'a, CPLD<SPI, CS0, CS1, CS2>, SPI, CS0, CS1, CS2> {
+	pub fn split<'a>(&'a self) -> Parts<'a, CPLD<SPI, CS0, CS1, CS2, GPIO>, SPI, CS0, CS1, CS2, GPIO> {
 		Parts::new(&self)
 	}
 
@@ -148,3 +175,18 @@ impl<SPI, CS0, CS1, CS2, E> CPLD<SPI, CS0, CS1, CS2> where
 		self.do_on_get_ref_mut_data(|mut dev| dev.select_chip(channel))
 	}
 }
+
+impl<SPI, CS0, CS1, CS2, GPIO, E> CPLD<SPI, CS0, CS1, CS2, GPIO>
+where
+	SPI: Transfer<u8>,
+	CS0: OutputPin,
+	CS1: OutputPin,
+	CS2: OutputPin,
+	GPIO: OutputPin<Error = E>
+{	
+	// Issue I/O Update
+	pub fn issue_io_update(&mut self) -> Result<(), Error<E>> {
+		self.do_on_get_ref_mut_data(|mut dev| dev.issue_io_update())
+	}
+}
+

src/main.rs

@@ -75,7 +75,7 @@ fn main() -> ! {
 	let miso = gpioa.pa6.into_alternate_af5();
 
 
-	let (mut cs0, mut cs1, mut cs2) = (
+	let (cs0, cs1, cs2) = (
 		gpiob.pb12.into_push_pull_output(),
 		gpioa.pa15.into_push_pull_output(),
 		gpioc.pc7.into_push_pull_output(),
@@ -84,9 +84,10 @@ fn main() -> ! {
 	/*
 	 *	I/O_Update -> PB13
 	 */
+	// TODO: Incoporate io_update into DDS
 	let mut io_update = gpiob.pb15.into_push_pull_output();
 
-	let mut spi = dp.SPI1.spi(
+	let spi = dp.SPI1.spi(
 		(sclk, miso, mosi),
 		spi::MODE_0,
 		3.mhz(),
@@ -94,27 +95,72 @@ fn main() -> ! {
 		&ccdr.clocks,
 	);
 	
-	// debug led
+	let mut switch = CPLD::new(spi, (cs0, cs1, cs2), io_update);
-	let mut yellow = gpioe.pe1.into_push_pull_output();
-	yellow.set_high().unwrap();
-	
-/*
-	let mut switch = CPLD::new(spi, (cs0, cs1, cs2));
 	let parts = switch.split();
 
 	let mut config = ConfigRegister::new(parts.spi1);
 	let mut att = Attenuator::new(parts.spi2);
 	let mut dds0 = DDS::new(parts.spi4);
 
-	loop {
+	// Reset all DDS, set CLK_SEL to 0
-		let mut counter = config.get_status(StatusMask::RF_SW).unwrap();
-		hprintln!("{}", counter);
 	config.set_configurations(&mut [
-			(CFGMask::RF_SW, ((counter + 1)%16) as u32)
+		(CFGMask::RST, 1),
+		(CFGMask::IO_RST, 1),
+		(CFGMask::IO_UPDATE, 0)
 	]).unwrap();
-	}
-*/
 
+	config.set_configurations(&mut [
+		(CFGMask::IO_RST, 0),
+		(CFGMask::RST, 0),
+		(CFGMask::RF_SW, 1)
+	]).unwrap();
+
+	dds0.write_register(0x00, &mut[
+		0x00, 0x00, 0x00, 0x02
+	]).unwrap();
+
+//	io_update.set_high().unwrap();
+//	io_update.set_low().unwrap();
+//	switch.issue_io_update();
+
+	dds0.write_register(0x02, &mut[
+		0x01F, 0x3F, 0xC0, 0x00
+	]).unwrap();
+
+//	io_update.set_high().unwrap();
+//	io_update.set_low().unwrap();
+//	switch.issue_io_update();
+
+	hprintln!("{:#X?}", dds0.read_register(0x00, &mut[
+		0x00, 0x00, 0x00, 0x00
+	]).unwrap()).unwrap();
+
+	// Calculate FTW
+	let f_out = 10_000_000;
+	let f_sclk = 100_000_000;
+	let resolution :u64 = 1 << 32;
+	let ftw = (resolution * f_out / f_sclk) as u32;
+	
+	hprintln!("{}", ftw);
+
+	// Read single-tone profile 0
+	let mut profile :[u8; 8] = [0; 8];
+	dds0.read_register(0x0E, &mut profile).unwrap();
+
+	// Overwrite FTW on profile
+	profile[4] = ((ftw >> 24) & 0xFF) as u8;
+	profile[5] = ((ftw >> 16) & 0xFF) as u8;
+	profile[6] = ((ftw >> 8 ) & 0xFF) as u8;
+	profile[7] = ((ftw >> 0 ) & 0xFF) as u8;
+
+	dds0.write_register(0x0E, &mut profile).unwrap();
+//	io_update.set_high().unwrap();
+//	io_update.set_low().unwrap();
+//	switch.issue_io_update();
+
+	hprintln!("{:#X?}", dds0.read_register(0x0E, &mut profile).unwrap()).unwrap();
+	
+/*
 	cs0.set_low().unwrap();
 	cs1.set_low().unwrap();
 	cs2.set_low().unwrap();
@@ -139,9 +185,11 @@ fn main() -> ! {
 	cs0.set_low().unwrap();
 
 	// Release reset, control I/O Update through EEM
+	// Relay clock signal from internal OSC (CLK_SEL = 0)
+	// Enable Switch 0
 	cs0.set_high().unwrap();
 	spi.transfer(&mut [
-		0x00, 0x00, 0x0A
+		0x00, 0x00, 0x01
 	]).unwrap();
 	cs0.set_low().unwrap();
 
@@ -149,18 +197,59 @@ fn main() -> ! {
 	cs1.set_low().unwrap();
 	cs2.set_high().unwrap();
 
-	hprintln!("{:?}", spi.transfer(&mut [
+	// Configure SDIO to be input only, enable 3-wires communication
+	spi.transfer(&mut [
 		0x00, 0x00, 0x00, 0x00, 0x02
-	]).unwrap()).unwrap();
+	]).unwrap();
+
+	// IO Update after every SPI transfer
+	io_update.set_high().unwrap();
+	delay.delay_ms(1_u16);
+	io_update.set_low().unwrap();
+
+	// Bypass PLL, bypass divisor
+	spi.transfer(&mut [
+		0x02, 0x1F, 0x3F, 0xC0, 0x00
+	]).unwrap();
 
 	io_update.set_high().unwrap();
 	delay.delay_ms(1_u16);
 	io_update.set_low().unwrap();
 
-	hprintln!("{:?}", spi.transfer(&mut [
+	hprintln!("{:#X?}", spi.transfer(&mut [
-		0x80, 0x00, 0x00, 0x00, 0x00
+		0x82, 0x00, 0x00, 0x00, 0x00
 	]).unwrap()).unwrap();
 
+	let f_out = 10_000_000.0;
+	let f_sclk = 100_000_000.0;
+	let resolution :u64 = 1 << 32;
+	let ftw = ((resolution as f32) * f_out / f_sclk) as u32;
+	hprintln!("{:#X}", ftw);
+
+	// Read profile 0
+	let mut profile_arr_0 :[u8; 9] = [0; 9];
+	profile_arr_0[0] = 0x8E;
+	hprintln!("{:#X?}", spi.transfer(&mut profile_arr_0).unwrap()).unwrap();
+
+	// Write FTW to profile 0
+	profile_arr_0[0] = 0x0E;
+	profile_arr_0[5] = ((ftw >> 24) & 0xFF) as u8;
+	profile_arr_0[6] = ((ftw >> 16) & 0xFF) as u8;
+	profile_arr_0[7] = ((ftw >> 8 ) & 0xFF) as u8;
+	profile_arr_0[8] = ((ftw >> 0 ) & 0xFF) as u8;
+	
+	hprintln!("{:#X?}", profile_arr_0).unwrap();
+	spi.transfer(&mut profile_arr_0).unwrap();
+
+	// Update after write
+	io_update.set_high().unwrap();
+	delay.delay_ms(1_u16);
+	io_update.set_low().unwrap();
+
+	// Read profile again, new value should be present
+	profile_arr_0[0] = 0x8E;
+	hprintln!("{:#X?}", spi.transfer(&mut profile_arr_0).unwrap()).unwrap();
+*/
 	
 	loop {}
 }

src/spi_slave.rs

@@ -4,45 +4,47 @@ use embedded_hal::{
 };
 use core::marker::PhantomData;
 
-use crate::{DoOnGetRefMutData, Error, SelectChip};
+use crate::{DoOnGetRefMutData, Error, SelectChip, IssueIOUpdate};
 
-pub struct SPISlave<'a, DEV: 'a, SPI, CS0, CS1, CS2> (
+pub struct SPISlave<'a, DEV: 'a, SPI, CS0, CS1, CS2, GPIO> (
 	&'a DEV,
-	u8,
+	u8,			// Channel of SPI slave
-	PhantomData<(SPI, CS0, CS1, CS2)>,
+	bool,		// Need I/O Update
+	PhantomData<(SPI, CS0, CS1, CS2, GPIO)>,
 );
 
-pub struct Parts<'a, DEV: 'a, SPI, CS0, CS1, CS2> {
+pub struct Parts<'a, DEV: 'a, SPI, CS0, CS1, CS2, GPIO> {
-	pub spi1: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi1: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi2: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi2: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi3: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi3: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi4: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi4: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi5: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi5: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi6: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi6: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
-	pub spi7: SPISlave<'a, DEV, SPI, CS0, CS1, CS2>,
+	pub spi7: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
 }
 
-impl<'a, DEV, SPI, CS0, CS1, CS2> Parts<'a, DEV, SPI, CS0, CS1, CS2> {
+impl<'a, DEV, SPI, CS0, CS1, CS2, GPIO> Parts<'a, DEV, SPI, CS0, CS1, CS2, GPIO> {
 	pub(crate) fn new(cpld: &'a DEV) -> Self {
 		Parts {
-			spi1: SPISlave(&cpld, 1, PhantomData),
+			spi1: SPISlave(&cpld, 1, false, PhantomData),
-			spi2: SPISlave(&cpld, 2, PhantomData),
+			spi2: SPISlave(&cpld, 2, false, PhantomData),
-			spi3: SPISlave(&cpld, 3, PhantomData),
+			spi3: SPISlave(&cpld, 3, true, PhantomData),
-			spi4: SPISlave(&cpld, 4, PhantomData),
+			spi4: SPISlave(&cpld, 4, true, PhantomData),
-			spi5: SPISlave(&cpld, 5, PhantomData),
+			spi5: SPISlave(&cpld, 5, true, PhantomData),
-			spi6: SPISlave(&cpld, 6, PhantomData),
+			spi6: SPISlave(&cpld, 6, true, PhantomData),
-			spi7: SPISlave(&cpld, 7, PhantomData),
+			spi7: SPISlave(&cpld, 7, true, PhantomData),
 		}
 	}
 }
 
-impl<'a, DEV, SPI, CS0, CS1, CS2, E> Transfer<u8> for SPISlave<'a, DEV, SPI, CS0, CS1, CS2>
+impl<'a, DEV, SPI, CS0, CS1, CS2, GPIO, E> Transfer<u8> for SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>
 where
 	CS2: OutputPin,
 	CS1: OutputPin,
 	CS0: OutputPin,
-	DEV: DoOnGetRefMutData<SPI, CS0, CS1, CS2>,
+	DEV: DoOnGetRefMutData<SPI, CS0, CS1, CS2, GPIO>,
 	SPI: Transfer<u8, Error = E>,
+	GPIO: OutputPin,
 {
 	type Error = Error<E>;
 
@@ -51,6 +53,9 @@ where
 			dev.select_chip(self.1);
 			let result = dev.spi.transfer(words).map_err(Error::SPI);
 			dev.select_chip(0);
+			if self.2 {
+				dev.issue_io_update();
+			}
 			result
 		})	
 	}