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HAL_ChibiOS: generate channel numbers in DMA tables

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This commit is contained in:
Andrew Tridgell 2018-03-14 10:44:52 +11:00
parent 3501763f4e
commit da2e79130b
1 changed files with 32 additions and 4 deletions
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36
libraries/AP_HAL_ChibiOS/hwdef/scripts/dma_parse.py
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@ -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# extracted from %sn\n' % os.path.basename(sys.argv[1]))
sys.stdout.write('\t# format is (DMA_TABLE, StreamNum, Channel)\n')
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")