anjian_receive.c：sdi编码对应按键接收
anjian_receive_uart.c：海思解码串口接收按键切换
anjian_send.c：sdi编码对应的解码端按键发送
anjian_send_5io.c：解码5个io对应5个画面
anjian_send_io.c：解码1个io 5个画面轮询