bench/serwb/demo: Demonstrate SerIO integration and pass counter from…

… Slave to Master, redirected to Leds.

bench/serwb/demo/ecpix5.py

@@ -25,7 +25,7 @@
 from litex.soc.interconnect import wishbone
 
 from liteiclink.serwb.genphy import SERWBPHY
-from liteiclink.serwb.core import SERWBCore
+from liteiclink.serwb.core import SERWBCore, SERIOCore
 
 from liteeth.phy.ecp5rgmii import LiteEthPHYRGMII
 
@@ -92,6 +92,12 @@ def __init__(self, platform, with_analyzer=False):
         # --------------------------
         self.bus.add_slave("serwb", self.serwb_master_core.bus, SoCRegion(origin=0x40000000, size=0x20000000))
 
+        # SerIO ------------------------------------------------------------------------------------
+
+        # SerIO.
+        # ------
+        self.serio = SERIOCore(serwb_core=self.serwb_master_core)
+
         # Leds -------------------------------------------------------------------------------------
         leds_pads = []
         for i in range(4):
@@ -101,8 +107,8 @@ def __init__(self, platform, with_analyzer=False):
         self.comb += [
             leds_pads[0].eq(~self.serwb_master_phy.init.ready),
             leds_pads[1].eq(~self.serwb_master_phy.init.error),
-            leds_pads[2].eq(1),
-            leds_pads[3].eq(1)
+            leds_pads[2].eq(self.serio.o[0]), # Counter from Slave through SerIO.
+            leds_pads[3].eq(self.serio.o[1]), # Counter from Slave through SerIO.
         ]
 
         # Analyzer ---------------------------------------------------------------------------------

bench/serwb/demo/icebreaker.py

@@ -11,6 +11,7 @@
 from migen import *
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex.build.generic_platform import *
 
@@ -24,7 +25,7 @@
 from litex.soc.cores.ram import Up5kSPRAM
 
 from liteiclink.serwb.genphy import SERWBPHY
-from liteiclink.serwb.core import SERWBCore
+from liteiclink.serwb.core import SERWBCore, SERIOCore
 
 kB = 1024
 
@@ -92,6 +93,18 @@ def __init__(self, platform, with_analyzer=False):
         )
         self.bus.masters["serwb"] = serwb_bus
 
+        # SerIO ------------------------------------------------------------------------------------
+
+        # SerIO.
+        # ------
+        self.serio = SERIOCore(serwb_core=self.serwb_slave_core)
+
+        # Increment Inputs every 100ms as PoC.
+        # ------------------------------------
+        self.serio_timer = WaitTimer(100e-3*sys_clk_freq)
+        self.comb += self.serio_timer.wait.eq(~self.serio_timer.done)
+        self.sync += If(self.serio_timer.done, self.serio.i.eq(self.serio.i + 1))
+
         # Leds -------------------------------------------------------------------------------------
         self.comb += [
             platform.request("user_led", 0).eq(self.serwb_slave_phy.init.ready),