mirror of https://github.com/ArduPilot/ardupilot
90 lines
2.6 KiB
Python
Executable File
90 lines
2.6 KiB
Python
Executable File
#!/usr/bin/env python
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'''
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extra DMA mapping tables from a stm32 datasheet
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This assumes a csv file extracted from the datasheet using tablula:
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https://github.com/tabulapdf/tabula
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'''
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import sys, csv, os
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def parse_dma_table(fname, table):
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dma_num = 1
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csvt = csv.reader(open(fname,'rb'))
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i = 0
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last_channel = -1
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for row in csvt:
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if len(row) > 1 and row[1].startswith('Channel '):
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row = row[1:]
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if not row[0].startswith('Channel '):
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continue
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channel = int(row[0].split(' ')[1])
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if channel < last_channel:
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dma_num += 1
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last_channel = channel
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for stream in range(8):
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s = row[stream+1]
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s = s.replace('_\r', '_')
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s = s.replace('\r_', '_')
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if s == '-':
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continue
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keys = s.split()
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for k in keys:
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brace = k.find('(')
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if brace != -1:
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k = k[:brace]
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if k not in table:
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table[k] = []
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table[k] += [(dma_num, stream, channel)]
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def error(str):
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'''show an error and exit'''
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print("Error: " + str)
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sys.exit(1)
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def check_full_table(table):
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'''check the table is not missing rows or columns
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we should have at least one entry in every row and one entry in every colum of each dma table
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'''
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stream_mask = [0,0]
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channel_mask = [0,0]
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for k in table:
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for v in table[k]:
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(engine,stream,channel) = v
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if engine > 2 or engine < 1:
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error("Bad entry for %s: %s" % (k, v))
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stream_mask[engine-1] |= 1<<stream
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channel_mask[engine-1] |= 1<<channel
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for i in range(2):
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for c in range(8):
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if not ((1<<c) & channel_mask[i]):
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error("Missing channel %u for dma table %u" % (c, i))
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if not ((1<<c) & stream_mask[i]):
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error("Missing stream %u for dma table %u" % (c, i))
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table = {}
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if len(sys.argv) != 2:
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print("Error: expected a CSV files and output file")
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sys.exit(1)
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parse_dma_table(sys.argv[1], table)
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check_full_table(table)
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sys.stdout.write("DMA_Map = {\n");
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sys.stdout.write('\t# format is (DMA_TABLE, StreamNum, Channel)\n')
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sys.stdout.write('\t# extracted from %s\n' % os.path.basename(sys.argv[1]))
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for k in sorted(table.iterkeys()):
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s = '"%s"' % k
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sys.stdout.write('\t%-10s\t:\t[' % s)
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for i in range(len(table[k])):
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sys.stdout.write("(%u,%u,%u)" % (table[k][i][0], table[k][i][1], table[k][i][2]))
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if i < len(table[k])-1:
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sys.stdout.write(",")
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sys.stdout.write("],\n")
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sys.stdout.write("}\n");
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