Generating ioregs! macros from SVD files

ioreg-svd.py

from cmsis_svd.parser import SVDParser

def getaccess(field):
	if field.access == 'read-only':
		return ': ro'
	if field.access == 'write-only':
		return ': wo'
	return ''

def getoffset(field):
	if field.bit_width == 1:
		return field.bit_offset
	elif field.bit_width > 1:
		return '%d..%d' % (
			field.bit_offset + field.bit_width,
			field.bit_offset
		)

def getdescription(x):
	if x.description == None:
		return ' '
	return ' '.join(x.description.split())

parser = SVDParser.for_packaged_svd('STMicro', 'STM32F40x.xml')
for peripheral in parser.get_device().peripherals:
	print('/// {}'.format(getdescription(peripheral)))
	print('ioregs! ({} @ 0x{:08x} = {{'.format(
		peripheral.name,
		peripheral.base_address))
	for register in peripheral.registers:
		print('  /// {}'.format(getdescription(register)))
		print('  0x{:02x} => reg{:d} {} {{'.format(
			register.address_offset,
			register.size,
			register.name.lower()))
		for field in register.fields:
			print('    {:<6} => {:<20} //= {}'.format(
				getoffset(field),
				field.name.lower() +
				getaccess(field) + ',',
				getdescription(field)))
			pprint.pprint(vars(field))
		print('  },\n')
	print('});')