Support rectangular board
Support rectangular board


Former-commit-id: 5382b6592d8269d94d003404337fd5bfd73a25fe
Former-commit-id: b60839f394f48297d401c113c49d5930c2346ce1
Former-commit-id: 67beb3fd179eca01bfd8a798662360bacadb11bf
accreator/Yixin-Board