From 2beeddebe44c8d5997b1999c651f28a36155cf07 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Wed, 10 Jul 2013 01:29:55 +0000
Subject: drop requirment for intelhex library added minimal hex file handling
 class

git-svn-id: https://svn.spreadspace.org/pic/trunk@65 a09c6847-51d9-44de-8ef2-e725cf50f3c7
---
 bootloader/downloader.py | 88 ++++++++++++++++++++----------------------------
 1 file changed, 36 insertions(+), 52 deletions(-)

(limited to 'bootloader/downloader.py')

diff --git a/bootloader/downloader.py b/bootloader/downloader.py
index 459e0d2..260ff7e 100755
--- a/bootloader/downloader.py
+++ b/bootloader/downloader.py
@@ -29,7 +29,7 @@ VERSION_MIN = 1
 ### HEX File Magic
 
 def load_hex(file):
-    from intelhex import IntelHex
+    from ihexpic import IHexPic
 
     fin = file
     if fin == '-':
@@ -38,58 +38,41 @@ def load_hex(file):
         print >> sys.stderr, "ERROR: File not found: %s" % fin
         sys.exit(1)
 
-    codedata = {}
-    ih = IntelHex(fin)
-    for a in ih.addresses():
-        if a/2 not in codedata.keys():
-            codedata[a/2] = 0
-        if a%2 == 0:
-            codedata[a/2] += ih[a]
-        else:
-            codedata[a/2] += (ih[a] << 8)
+    hexdata = IHexPic()
+    hexdata.load_from_file(fin)
+    return hexdata
 
-    return codedata
+#  TODO: re-add this as soon as write_hex_file works
+# def write_hex(file, hexdata):
+#     fout = file
+#     if fout == '-':
+#         fout = sys.stdout
 
-def write_hex(file, codedata):
-    from intelhex import IntelHex
+#     hexdata.write_hex_file(fout)
 
-    fin = file
-    if fin == '-':
-        fin = sys.stdout
-
-    hexdata = {}
-    for a in codedata:
-        hexdata[2*a] = codedata[a] & 0xFF
-        hexdata[2*a+1] = codedata[a] >> 8
-
-    ih = IntelHex()
-    ih.fromdict(hexdata)
-    ih.write_hex_file(fin)
-
-
-def get_lowest_flash_addr(codedata, fss):
-    lowest_code_addr = sorted(codedata.keys())[0]
+def get_lowest_flash_addr(hexdata, fss):
+    lowest_code_addr = hexdata.get_lowest_addr()
     return lowest_code_addr - (lowest_code_addr%fss)
 
-def get_highest_flash_addr(codedata, fss):
-    highest_code_addr = sorted(codedata.keys())[-1]
+def get_highest_flash_addr(hexdata, fss):
+    highest_code_addr = hexdata.get_highest_addr()
     return highest_code_addr + (fss - highest_code_addr%fss)
 
-def create_flash_image(codedata, fss, sa, ea):
+def create_flash_image(hexdata, fss, sa, ea):
     img = ( sa, [0xFFFF]*(ea-sa) )
-    for a,d in codedata.items():
+    for a,d in hexdata.items():
         if a < ea:
             img[1][a-sa] = d
     return img
 
-def create_flash_segments(codedata, fs, fss):
-    sa = get_lowest_flash_addr(codedata, fss)
-    ea = get_highest_flash_addr(codedata, fss)
+def create_flash_segments(hexdata, fs, fss):
+    sa = get_lowest_flash_addr(hexdata, fss)
+    ea = get_highest_flash_addr(hexdata, fss)
     if ea >= fs:
         print >> sys.stderr, "WARNING: the hex file contains data after end of flash, these words will be ignored"
         ea = fs
 
-    img = create_flash_image(codedata, fss, sa, ea)
+    img = create_flash_image(hexdata, fss, sa, ea)
     for i in xrange(0, ea, fss):
         slice = tuple(img[1][i:i+fss])
         if not all( (elem == 0xFFFF) for elem in slice):
@@ -234,27 +217,28 @@ def boot(dev, id, file):
     cmd_boot(dev)
 
 def write_flash(dev, id, file):
-    codedata = load_hex(file)
-    for segment in create_flash_segments(codedata, id['fs'], id['fss']):
+    hexdata = load_hex(file)
+    for segment in create_flash_segments(hexdata, id['fs'], id['fss']):
 #        print >> sys.stderr, "%05X: %s" % (segment[0], ''.join('%04X '%i for i in segment[1]))
         cmd_write_flash_segment(dev, id, segment[0], segment[1])
 
-def read_flash(dev, id, file):
-    codedata = {}
-    for addr in xrange(0, id['fs'], id['fss']):
-        data = cmd_read_flash_segment(dev, id, addr)
-#        print >> sys.stderr, "%05X: %s" % (addr, ''.join('%04X '%i for i in data))
-        a = addr
-        for d in data:
-            codedata[a] = d
-            a += 1
+#  TODO: re-add this as soon as write_hex_file works
+# def read_flash(dev, id, file):
+#     codedata = {}
+#     for addr in xrange(0, id['fs'], id['fss']):
+#         data = cmd_read_flash_segment(dev, id, addr)
+# #        print >> sys.stderr, "%05X: %s" % (addr, ''.join('%04X '%i for i in data))
+#         a = addr
+#         for d in data:
+#             codedata[a] = d
+#             a += 1
 
-    write_hex(file, codedata)
+#     write_hex(file, codedata)
 
 def verify_flash(dev, id, file):
-    codedata = load_hex(file)
+    hexdata = load_hex(file)
     err = 0
-    for segment in create_flash_segments(codedata, id['fs'], id['fss']):
+    for segment in create_flash_segments(hexdata, id['fs'], id['fss']):
         flashdata = cmd_read_flash_segment(dev, id, segment[0])
         for file,flash in zip(segment[1] , flashdata):
             if flash == 0x3FFF:
@@ -276,7 +260,7 @@ def verify_flash(dev, id, file):
 commands = {
     'boot': boot,
     'write': write_flash,
-    'read': read_flash,
+#    'read': read_flash,    #  TODO: re-add this as soon as write_hex_file works
     'verify': verify_flash
 }
 
-- 
cgit v1.2.3