how to solve, min Tr(CX) s.t Tr(AX)=b

I would like to how to solve my SDP problem (min Tr(CX) s.t Tr(AX)=b) by calling the interface of SDPA.Because I always fail to get the correct solution when directly inputting the matrices C,A and b.However,when I invoke cvxpy through Python, I can obtain a solution(with low precision).