91 lines
2.4 KiB
Python
91 lines
2.4 KiB
Python
#!/usr/bin/env python
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'''
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create alternate function tables, without using tabula
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This assumes a csv file generated by STM32CubeMX this way:
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"Pinout" (Above the IC view) -> "Export pinout with Alt. Functions"
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'''
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import sys, csv, os, re
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from functools import cmp_to_key
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def is_pin(str):
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'''see if a string is a valid pin name'''
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if len(str) < 3:
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return False
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if str[0] != 'P':
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return False
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if str[1] not in "ABCDEFGHIJK":
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return False
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try:
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p = int(str[2:])
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if p < 0 or p > 15:
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return False
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return True
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except ValueError:
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return False
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def pin_compare(p1, p2):
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'''control pin sort order'''
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(p1,f1) = p1.split(':')
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(p2,f2) = p2.split(':')
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port1 = p1[:2]
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port2 = p2[:2]
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pin1 = int(p1[2:])
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pin2 = int(p2[2:])
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#print(port1, pin1, port2, pin2)
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if port1 == port2:
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if pin1 == pin2:
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if f1 < f2:
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return -1
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return 1
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if pin1 < pin2:
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return -1
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return 1
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if port1 < port2:
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return -1
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return 1
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def parse_af_table(fname, table):
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csvt = csv.reader(open(fname,'r'))
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i = 0
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aflist = []
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row = next(csvt)
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AF_COLUMN = 5 # Columns are: "Position","Name","Type","Signal","Label","AF0","AF1"...
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if len(row) < AF_COLUMN or row[AF_COLUMN] != 'AF0':
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print("Error: This doesn't look like CubeMX pinout csv")
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sys.exit(1)
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for row in csvt:
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pin = re.findall('\w\w\d+', row[1]) # Strip function after pin like 'PC14-OSC32_IN'
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if len(pin) == 0:
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continue
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elif not is_pin(pin[0]):
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continue
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pin = pin[0]
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for af_index, value in enumerate(row[AF_COLUMN:]):
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if len(value) > 0:
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for single_function in value.split('/'):
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table['{0}:{1}'.format(pin, single_function)] = af_index
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# Key: PIN:FUNCTION
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# Value: AFNUMBER
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table = {}
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if len(sys.argv) != 2:
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print("Error: expected 1 CSV file")
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sys.exit(1)
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parse_af_table(sys.argv[1], table)
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sys.stdout.write("AltFunction_map = {\n");
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sys.stdout.write('\t# format is PIN:FUNCTION : AFNUM\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.keys(), key=cmp_to_key(pin_compare)):
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s = '"' + k + '"'
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sys.stdout.write('\t%-20s\t:\t%s,\n' % (s, table[k]))
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sys.stdout.write("}\n");
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