PCA953X_R_INPUT_SET_OUT
*outp = PCA953X_R_INPUT_SET_OUT(*outp, bit, 0);
*outp = PCA953X_R_INPUT_SET_OUT(*outp, bit, 1);
nout = PCA953X_R_INPUT_SET_OUT(out, bit, 0);
nout = PCA953X_R_INPUT_SET_OUT(out, bit, 1);