From 750d9f1fd0a53acb208692814443b7518978b1b0 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 22 Mar 2018 09:35:35 +0000
Subject: [PATCH] add interface reader

---
 interfaces.txt        |  6 ++++++
 jtag.txt              |  5 +++++
 pwm.txt               |  1 +
 sd.txt                |  6 ++++++
 spi.txt               |  4 ++++
 src/interface_decl.py | 36 ++++++++++++++++++++++++++++++++++++
 twi.txt               |  2 ++
 uart.txt              |  2 ++
 8 files changed, 62 insertions(+)
 create mode 100644 interfaces.txt
 create mode 100644 jtag.txt
 create mode 100644 pwm.txt
 create mode 100644 sd.txt
 create mode 100644 spi.txt
 create mode 100644 twi.txt
 create mode 100644 uart.txt

diff --git a/interfaces.txt b/interfaces.txt
new file mode 100644
index 0000000..5a1a4e2
--- /dev/null
+++ b/interfaces.txt
@@ -0,0 +1,6 @@
+uart	4
+spi	1
+twi	2
+sd	2
+jtag	2
+pwm	1
diff --git a/jtag.txt b/jtag.txt
new file mode 100644
index 0000000..494fbd2
--- /dev/null
+++ b/jtag.txt
@@ -0,0 +1,5 @@
+tdi	in
+tms	in
+tclk	in
+trst	in
+tdo	out
diff --git a/pwm.txt b/pwm.txt
new file mode 100644
index 0000000..76b0c8b
--- /dev/null
+++ b/pwm.txt
@@ -0,0 +1 @@
+pwm	out
diff --git a/sd.txt b/sd.txt
new file mode 100644
index 0000000..f06731c
--- /dev/null
+++ b/sd.txt
@@ -0,0 +1,6 @@
+clk	out
+cmd	out
+d0	outen
+d1	outen
+d2	outen
+d3	outen
diff --git a/spi.txt b/spi.txt
new file mode 100644
index 0000000..a7c9d79
--- /dev/null
+++ b/spi.txt
@@ -0,0 +1,4 @@
+sclk	out
+mosi	out
+nss	out
+miso	in
diff --git a/src/interface_decl.py b/src/interface_decl.py
index bbdd22e..1e85581 100644
--- a/src/interface_decl.py
+++ b/src/interface_decl.py
@@ -1,3 +1,4 @@
+from UserDict import UserDict
 
 class Pin(object):
     """ pin interface declaration.
@@ -166,6 +167,39 @@ class IOInterface(Interface):
         return "cell{0}_mux_in"
 
 
+class Interfaces(UserDict):
+    """ contains a list of interface definitions
+    """
+
+    def __init__(self):
+        self.ifacecount = []
+        ifaces = {}
+        with open('interfaces.txt', 'r') as ifile:
+            for l in ifile.readlines():
+                l = l.strip()
+                l = l.split("\t")
+                print l
+                name = l[0]
+                count = int(l[1])
+                self.ifacecount.append((name, count))
+                spec = self.read_spec(name)
+                ifaces[name] = Interface(name, spec)
+        UserDict.__init__(self, ifaces)
+
+    def read_spec(self, name):
+        spec = []
+        with open('%s.txt' % name, 'r') as sfile:
+            for l in sfile.readlines():
+                l = l.split("\t")
+                d = {'name': l[0]}
+                if l[1] == 'out':
+                    d['action'] = True
+                elif l[1] == 'inout':
+                    d['outen'] = True
+                spec.append(d)
+        return spec
+
+
 # ========= Interface declarations ================ #
 
 mux_interface = Interface('cell', [{'name': 'mux', 'ready':False,
@@ -227,6 +261,8 @@ pwminterface_decl = Interface('pwm',
                             [{'name': "pwm", 'action': True}
                             ])
 
+ifaces = Interfaces()
+
 # ======================================= #
 
 # basic test
diff --git a/twi.txt b/twi.txt
new file mode 100644
index 0000000..a673042
--- /dev/null
+++ b/twi.txt
@@ -0,0 +1,2 @@
+sda	outen
+scl	outen
diff --git a/uart.txt b/uart.txt
new file mode 100644
index 0000000..9af527f
--- /dev/null
+++ b/uart.txt
@@ -0,0 +1,2 @@
+rx	in
+tx	out
-- 
2.30.2