HAL_ChibiOS: generate channel numbers in DMA tables

libraries/AP_HAL_ChibiOS/hwdef/scripts/dma_parse.py

@@ -36,7 +36,33 @@ def parse_dma_table(fname, table):
                     k = k[:brace]
                 if k not in table:
                     table[k] = []
-                table[k] += [(dma_num, stream)]
+                table[k] += [(dma_num, stream, channel)]
+
+def error(str):
+    '''show an error and exit'''
+    print("Error: " + str)
+    sys.exit(1)
+
+def check_full_table(table):
+    '''check the table is not missing rows or columns
+       we should have at least one entry in every row and one entry in every colum of each dma table
+    '''
+    stream_mask = [0,0]
+    channel_mask = [0,0]
+    for k in table:
+        for v in table[k]:
+            (engine,stream,channel) = v
+            if engine > 2 or engine < 1:
+                error("Bad entry for %s: %s" % (k, v))
+            stream_mask[engine-1] |= 1<<stream
+            channel_mask[engine-1] |= 1<<channel
+    for i in range(2):
+        for c in range(8):
+            if not ((1<<c) & channel_mask[i]):
+                error("Missing channel %u for dma table %u" % (c, i))
+            if not ((1<<c) & stream_mask[i]):
+                error("Missing stream %u for dma table %u" % (c, i))
+    
 
 table = {}
 
@@ -46,15 +72,17 @@ if len(sys.argv) != 2:
 
 parse_dma_table(sys.argv[1], table)
 
+check_full_table(table)
+
 sys.stdout.write("DMA_Map = {\n");
-sys.stdout.write('\t# format is [DMA_TABLE, StreamNum]\n')
+sys.stdout.write('\t# format is (DMA_TABLE, StreamNum, Channel)\n')
-sys.stdout.write('\t# extracted from %sn\n' % os.path.basename(sys.argv[1]))
+sys.stdout.write('\t# extracted from %s\n' % os.path.basename(sys.argv[1]))
 
 for k in sorted(table.iterkeys()):
     s = '"%s"' % k
     sys.stdout.write('\t%-10s\t:\t[' % s)
     for i in range(len(table[k])):
-        sys.stdout.write("(%u,%u)" % (table[k][i][0], table[k][i][1]))
+        sys.stdout.write("(%u,%u,%u)" % (table[k][i][0], table[k][i][1], table[k][i][2]))
         if i < len(table[k])-1:
             sys.stdout.write(",")
     sys.stdout.write("],\n")