控制人機界面

　　微控制器是人機界面的核心，將傳感器數(shù)據(jù)轉(zhuǎn)換成命令。從工藝技術(shù)和系統(tǒng)結(jié)構(gòu)上提高性能，使微控制器和FPGA能夠通過硬件引擎或軟件庫處理更多的圖形和音頻，并在工業(yè)環(huán)境中提供更豐富的接口。

　　微控制器越來越集成和降低成本，正推動這項技術(shù)進一步控制工業(yè)設(shè)計中的人機界面。集成LCD控制器和更高性能數(shù)字信號處理的能力，使顯著更復(fù)雜的顯示器，包括3D圖形，以實現(xiàn)和顯示，同時保持盡可能低的成本和功耗。添加其他功能，如觸摸屏控制器和通信模塊，允許更進一步的集成，使接口控制器成為系統(tǒng)中的關(guān)鍵元素。

　　臂產(chǎn)生了一個新的處理器內(nèi)核生成，如Cortex-M3和Cortex-M4，有顯著更高水平的性能和DSP的支持，使一類新的微控制器來處理廣泛的接口函數(shù)。

　　However， there are other ways to tackle the challenges. Existing cores can be supplemented with dedicated graphics hardware to make the most of existing software， while using field programmable gate arrays can provide either dedicated hardware or an optimized microcontroller， both combined with the technology to drive the displays.

　　Freescale Semiconductor’s Kinetis K40 is a microcontroller aimed directly at industrial human interface designs. It has a hardware touch-sensing interface， with up to 16 inputs， that avoids software polling method and a flexible， low-power LCD controller that supports up to 320 segments （40 x 8 or 44 x 4）。 The LCD blink mode enables low average power while remaining in low-power mode while a segment fail detection block guards against erroneous readouts and reduces LCD test costs.

　　The segment LCD controller supports up to 40 frontplanes and eight backplanes， or 44 frontplanes and four backplanes， all of which are configurable in software to avoid a costly re-design of the display equipment.