add LiteScopeIO example

litescope/host/driver.py

@@ -100,7 +100,7 @@ class LiteScopeIODriver():
 	def build(self):
 		for key, value in self.regs.d.items():
 			if self.name in key:
-				key.replace(self.name +"_")
+				key = key.replace(self.name +"_", "")
 				setattr(self, key, value)
 
 	def write(self, value):
@@ -139,7 +139,7 @@ class LiteScopeLADriver():
 	def build(self):
 		for key, value in self.regs.d.items():
 			if self.name == key[:len(self.name)]:
-				key.replace(self.name + "_")
+				key = key.replace(self.name + "_")
 				setattr(self, key, value)
 		value = 1
 		for name, length in self.layout:

targets/simple.py

@@ -11,6 +11,8 @@ from misoclib import identifier
 
 from litescope.common import *
 from litescope.bridge.uart2wb import LiteScopeUART2WB
+from litescope.frontend.io import LiteScopeIO
+
 
 class _CRG(Module):
 	def __init__(self, clk_in):
@@ -72,7 +74,9 @@ class GenSoC(Module):
 
 class LiteScopeSoC(GenSoC, AutoCSR):
 	default_platform = "de0nano"
-	csr_map = {}
+	csr_map = {
+		"io":	10
+	}
 	csr_map.update(GenSoC.csr_map)
 
 	def __init__(self, platform, export_mila=False):
@@ -80,4 +84,8 @@ class LiteScopeSoC(GenSoC, AutoCSR):
 		GenSoC.__init__(self, platform, clk_freq)
 		self.submodules.crg = _CRG(platform.request("clk50"))
 
+		self.submodules.io = LiteScopeIO(8)
+		self.leds = Cat(*[platform.request("user_led", i) for i in range(8)])
+		self.comb += self.leds.eq(self.io.o)
+
 default_subtarget = LiteScopeSoC

test/Makefile

@@ -5,3 +5,6 @@ CMD = PYTHONPATH=$(LSDIR) $(PYTHON)
 
 test_regs:
 	$(CMD) test_regs.py
+
+test_io:
+	$(CMD) test_io.py

test/test_io.py

@@ -0,0 +1,35 @@
+import time
+
+from config import *
+from litescope.host.driver import LiteScopeIODriver
+
+def led_anim0(io):
+	for i in range(10):
+		io.write(0xA5)
+		time.sleep(0.1)
+		io.write(0x5A)
+		time.sleep(0.1)
+
+def led_anim1(io):
+	for j in range(4):
+		#Led <<
+		led_data = 1
+		for i in range(8):
+			io.write(led_data)
+			time.sleep(i*i*0.0020)
+			led_data = (led_data<<1)
+		#Led >>
+		ledData = 128
+		for i in range(8):
+			io.write(led_data)
+			time.sleep(i*i*0.0020)
+			led_data = (led_data>>1)
+
+io = LiteScopeIODriver(wb.regs, "io")
+wb.open()
+###
+led_anim0(io)
+led_anim1(io)
+print("%02X" %io.read())
+###
+wb.close()