def main():
# load command-line arguments
parser = argparse.ArgumentParser()
parser.add_argument('--json')
parser.add_argument('--units', default='inch')
args = parser.parse_args()
# read board placement from SMT-PCB
with open(args.json, 'r') as f:
json_dict = json.load(f)
board_edge = json_dict['board_edge']
width, height = BoardTools.get_board_dims(board_edge)
# define unit conversion
if args.units.lower() in ['in', 'inch', 'inches']:
conv = lambda x: 0.0393701 * x
area_str = 'in^2'
if args.units.lower() in ['mm', 'mms', 'millimeters']:
conv = lambda x: x
area_str = 'mm^2'
if args.units.lower() in ['mil', 'mils']:
conv = lambda x: 39.3701 * x
area_str = 'mil^2'
area = conv(width) * conv(height)
# print summary
print '############'
print 'Summary'
print 'Board area: %0.3f %s' % (area, area_str)
print '############'
def place_rects(args):
# read in SMT input
with open(args.json, 'r') as f:
json_dict = json.load(f)
# create the placer grid
width, height = BoardTools.get_board_dims(json_dict['board_edge'])
grid = PlaceGrid(width=width, height=height, dx=args.dx, dy=args.dy)
fab = design.Fabric(grid.place_dims)
# Create the design
comps_list = grid.make_comps_list(json_dict['module_dict'])
routing_list = grid.make_routing_list(json_dict['routing_list'])
d = design.Design(comps_list, routing_list, fab, position.RotIntXY)
# Add constraints
d.add_constraint_generator('no_overlap', constraints.no_overlap)
d.add_pad_cg('max_dist', constraints.pad_max_dists)
# create the solver
if args.optimize:
d.add_pad_opt('min_total_dist', constraints.pad_dists)
s = z3.Optimize()
else:
s = z3.Solver()
# add the constraints to the solver
s.add(d.constraints)
# set up the optimization, if desired
if args.optimize:
for func in d.r_opt_param:
s.minimize(func)
with open('freeduino.smt', 'w') as f:
f.write(s.to_smt2())
# run the placement
start = time.time()
result = s.check()
end = time.time()
place_time = end - start
print('Placement took', place_time, 'seconds.')
if args.dout:
with open(args.dout, 'a+') as f:
f.write(str(place_time) + '\n')
if result == z3.unsat:
raise Exception('Problem is unsat.')
return d, s.model()