migen: beaufity eem res struct

.cargo/config

@@ -1,5 +1,5 @@
 [target.thumbv7em-none-eabihf]
-runner = "gdb -q -x gdb_config/openocd.gdb"
+runner = "gdb -q -x gdb_config/fpga_config.gdb"
 rustflags = [
   "-C", "link-arg=-Tlink.x",
 ]

migen/fpga_config.py

@@ -10,72 +10,61 @@ from migen.genlib.io import DifferentialInput
 class UrukulConnector(Module):
 	def __init__(self, platform):
 		# Request EEM I/O & SPI
-#		eem = platform.request("eem", 0)
-		eem0 = platform.request("eem0", 0);
-		eem1 = platform.request("eem0", 1);
-#		eem2 = platform.request("eem0", 2);
-		eem2 = platform.request("eem0_n", 2);
-#		_ignore_eem2 = platform.request("eem0_n", 2);
-#		miso = platform.request("miso", 0);
-		eem3 = platform.request("eem0", 3);
-		eem4 = platform.request("eem0", 4);
-		eem5 = platform.request("eem0", 5);
+		eem0 = [
+			platform.request("eem0", 0),
+			platform.request("eem0", 1),
+			platform.request("eem0_n", 2),
+			platform.request("eem0", 3),
+			platform.request("eem0", 4),
+			platform.request("eem0", 5)
+		]
 		spi = platform.request("spi")
 		led = platform.request("user_led")
 
-		# Assert signal length
-		# TODO: Refactor assertion
+		# Assert SPI resource length
 		assert len(spi.sclk) == 1
 		assert len(spi.mosi) == 1
-#		assert len(spi.miso) == 1
+		assert len(spi.miso) == 1
 		assert len(spi.cs) == 3
 
-		# Flip positive signal as negative output, maybe only do it for FPGA outputs
-		# self.comb += eem.n.eq(~eem.p)
-		self.miso_n = Signal()
-		self.sdo = Signal()
+		# TODO: Assert EEM resources
+		assert isinstance(eem0, list)
 
+		# Flip positive signal as negative output, maybe only do it for FPGA outputs
+		self.miso_n = Signal()
+
+		# Very similar setup to Diff setup for iCE40 suggested, but gave B pin instead
 		self.specials += Instance("SB_IO",
 							p_PIN_TYPE=C(0b000001, 6),
 							p_IO_STANDARD="SB_LVDS_INPUT",
-							io_PACKAGE_PIN=eem2,
-							i_D_OUT_0=self.sdo,
+							io_PACKAGE_PIN=eem0[2],
 							o_D_IN_0=self.miso_n
 						)
 
-#		self.submodules += LatticeiCE40DifferentialInputImpl(eem2.p, eem2.n, spi.miso)
-#		self.specials += DifferentialInput(eem2, None, spi.miso)
-
 		# Link EEM to SPI
 		self.comb += [
 
-			eem0.p.eq(spi.sclk),
-			eem0.n.eq(~spi.sclk),
+			eem0[0].p.eq(spi.sclk),
+			eem0[0].n.eq(~spi.sclk),
 
-			eem1.p.eq(spi.mosi),
-			eem1.n.eq(~spi.mosi),
+			eem0[1].p.eq(spi.mosi),
+			eem0[1].n.eq(~spi.mosi),
 
-#			spi.miso.eq(eem2.p),
 			spi.miso.eq(~self.miso_n),
 
-			eem3.p.eq(spi.cs[0]),
-			eem3.n.eq(~spi.cs[0]),
+			eem0[3].p.eq(spi.cs[0]),
+			eem0[3].n.eq(~spi.cs[0]),
 
-			eem4.p.eq(spi.cs[1]),
-			eem4.n.eq(~spi.cs[1]),
+			eem0[4].p.eq(spi.cs[1]),
+			eem0[4].n.eq(~spi.cs[1]),
 
-			eem5.p.eq(spi.cs[2]),
-			eem5.n.eq(~spi.cs[2]),
+			eem0[5].p.eq(spi.cs[2]),
+			eem0[5].n.eq(~spi.cs[2]),
 
 			led.eq(1)
 		]
 
 
-
-		# Debug purposes: Tie EEM MISO to EEM MOSI
-		# self.comb += eem.p[2].eq(eem.p[1])
-
-
 if __name__ == "__main__":
 	platform = HumpbackPlatform()
 	platform.build(UrukulConnector(platform))

src/main.rs

@@ -24,6 +24,7 @@ use firmware::{
 	config_register::{
 		ConfigRegister,
 		CFGMask,
+		StatusMask,
 	},
 	dds::DDS,
 };
@@ -99,14 +100,13 @@ fn main() -> ! {
 
 	let mut config = ConfigRegister::new(parts.spi1);
 	let mut att = Attenuator::new(parts.spi2);
+	let mut dds0 = DDS::new(parts.spi4);
 	loop {
-//		let mut counter = config.get_configuration(CFGMask::RF_SW);
-//		hprintln!("{}", counter);
-//		config.set_configurations(&mut [
-//			(CFGMask::RF_SW, ((counter + 1)%16) as u32)
-//		]).unwrap();
-		hprintln!("{:?}", att.set_attenuation([33.0, -1.0, 24.0, 12.0]).unwrap()).unwrap();
-		hprintln!("{:?}", att.set_attenuation([0.0, 0.0, 0.0, 0.0]).unwrap()).unwrap();
+		let mut counter = config.get_status(StatusMask::RF_SW).unwrap();
+		hprintln!("{}", counter);
+		config.set_configurations(&mut [
+			(CFGMask::RF_SW, ((counter + 1)%16) as u32)
+		]).unwrap();
 	}
 
 /*
@@ -114,12 +114,26 @@ fn main() -> ! {
 	cs1.set_low().unwrap();
 	cs2.set_low().unwrap();
 
-	let mut arr: [u8; 4] = [0x12, 0x34, 0x56, 0x78];
+	cs2.set_high().unwrap();
+	let mut arr: [u8; 5] = [0x00, 0x00, 0x00, 0x00, 0x02];
+	hprintln!("Feedback of conf: {:?}", spi.transfer(&mut arr).unwrap()).unwrap();
+	cs2.set_low().unwrap();
+
+	arr[0] = 0x80;
+	arr[1] = 0;
+	arr[2] = 0;
+	arr[3] = 0;
+	arr[4] = 0;		
+	cs1.set_high().unwrap();
+	hprintln!("first proper feedback: {:?}", spi.transfer(&mut arr).unwrap()).unwrap();
+	cs1.set_low().unwrap();
+
 	loop {
-		arr[0] = 0x12;
-		arr[1] = 0x34;
-		arr[2] = 0x56;
-		arr[3] = 0x78;
+		arr[0] = 0x81;
+		arr[1] = 0;
+		arr[2] = 0;
+		arr[3] = 0;
+		arr[4] = 0;
 		cs1.set_high().unwrap();
 		hprintln!("{:?}", spi.transfer(&mut arr).unwrap()).unwrap();
 		cs1.set_low().unwrap();