基于LPC2103的LED显示字库无线通信系统设计

LED Display Word Stock Update Wireless Research Based on LPC2103

针对LED显示屏的字库更新和数据传输问题,采用嵌入式微处理器LPC2103作为LED显示屏的控制中枢,通过IAP技术存储和更新其内部Flash中的字库数据。采用ZigBee技术无线传输数据。重点阐述了在存储和更新LED显示屏的字库时,上位机通过ZigBee协调器把LED显示屏需要更新的字库数据无线发送给与LPC2103相连的ZigBee终端节点,终端节点将该数据通过串口发给LPC2103,再利用IAP技术对LPC2103内部Flash进行单独编程操作,达到存储和更新字库数据的目的。实验表明,构建的LED字库数据无线更新系统运行良好,切实可行。

Aim at the problem of LED display word stock update and data transmission, the system adopts the embedded microcontroller processor LPC2103 as the control center of the LED display. By the technology of IAP storage and update font data in its internal Flash, display word stock is transmitted wirelessly by ZigBee technology. When update LED display content, PC wirelessly transfer the data on LED needed to update to ZigBee terminal nodes connected to the LPC2103 via ZigBee coordinator, terminal node send the data via UART to LPC2103, reuse IAP technology to program LPC2103 internal Flash, to achieve the purpose of only storing and updating character data. Experiments show that the built LED character data wireless update system runs well, is feasible.