98 lines
3.1 KiB
Python
98 lines
3.1 KiB
Python
import argparse
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from tw88xx import TW88xx
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parser = argparse.ArgumentParser(description='TW88xx debug utility.')
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def auto_int(x):
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return int(x, 0)
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parser.add_argument('command',
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help='the command to execute',
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choices=('dump_flash', 'get_id', 'dump_regs', 'dump_lut')
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)
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parser.add_argument('-f', '--flash_file',
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help='file to read from / write into'
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)
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parser.add_argument('-i', '--interface',
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help='the i2c interface to use',
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choices=('devi2c', 'swd')
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)
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parser.add_argument('-j', '--jlink',
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help='J-Link (serial) to use for SWD',
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default=None
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)
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parser.add_argument('-b', '--bus',
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help='/dev/i2c bus number',
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type=int,
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default=1
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)
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parser.add_argument('-t', '--type',
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help='TX88xx type',
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choices=('tw8836',),
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default='tw8836'
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)
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parser.add_argument('--start',
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help='begin of reading range',
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type=auto_int,
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default=0
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)
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parser.add_argument('--length',
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help='amount to read',
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type=auto_int,
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default=0
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)
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args = parser.parse_args()
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if args.interface == 'swd':
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from i2c_interfaces import JLinkSwdI2CInterface
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i2c = JLinkSwdI2CInterface(jlink_serial=args.jlink)
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elif args.interface == 'devi2c':
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from i2c_interfaces import DevI2CInterface
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i2c = DevI2CInterface(bus=args.bus)
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i2c.open()
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if args.type == 'tw8836':
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from tw8836 import TW8836
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tw88xx = TW8836(i2c)
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if args.command == 'get_id':
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id = tw88xx.read_reg(0x000)
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print(f'{id:02x}')
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flash_id = tw88xx.execute_flash_cmd(cmd=[0x9f], read_len=3)
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print(flash_id.hex())
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elif args.command == 'dump_flash':
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tw88xx.execute_flash_cmd(cmd=[0xE9], read_len=0)
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data = []
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BS = 4
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tw88xx.prepare_flash_read(cmd_len=4, read_len=BS)
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for block_start in range(args.start, args.start+args.length, BS):
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cmd = [0x03, (block_start >> 16) & 0xFF, (block_start >> 8) & 0xFF, block_start & 0xFF]
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block = tw88xx.do_flash_cmd(cmd, read_len=BS)
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data.extend(block)
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print(f'{(block_start-args.start) / (args.length)*100:02.4f}% {block_start:06x}: {block.hex()}')
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print(bytes(data).hex())
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with open(args.flash_file, 'wb') as f:
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f.write(bytes(data))
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elif args.command == 'dump_regs':
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if not args.start:
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tw88xx.dump_regs()
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else:
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for r in range(args.start, args.start+args.length+1):
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if r in tw88xx.REGS:
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v = tw88xx.read_reg(r)
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print(f'{r:03x} = {v:02x} ({tw88xx.REGS[r]})')
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elif args.command == 'dump_lut':
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tbl = tw88xx.dump_lut()
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if args.flash_file:
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with open(args.flash_file, 'w') as f:
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for r in sorted(tbl):
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f.write(f'{r:03x}={bytes(tbl[r]).hex()}\n')
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