bt485_wr_i
inline void bt485_wr_i(struct bt485data *, u_int8_t, u_int8_t);
bt485_wr_i(data, BT485_IREG_COMMAND_3, regval);
bt485_wr_i(data, BT485_IREG_COMMAND_3, regval);
bt485_wr_i(data, BT485_IREG_COMMAND_3, regval);
bt485_wr_i(data, BT485_IREG_COMMAND_3, regval);