3BHE033067R0103模塊，GCC960C103使用配置教程
排查方案：檢查產(chǎn)品輸入端保險絲、插件電阻、大電容等器件是否完好，測試輸入電壓波形判斷。建議調(diào)整輸入電壓，使用合適電壓的電源作為輸入，或更換為更高輸入的產(chǎn)品。
有水珠或錫渣等雜物附著在產(chǎn)品上導致內(nèi)部短路
排查方案：檢查環(huán)境濕度是否在規(guī)格內(nèi)、其次可拆開產(chǎn)品檢查貼片面上是否存在雜物，底面是否干凈。建議保證測試（使用）環(huán)境的清潔，溫濕度在規(guī)格范圍，必要時產(chǎn)品刷三防漆。
輸入線斷裂或連接線端口接觸不良
3BHE033067R0103模塊，GCC960C103使用配置教程排查方案：從產(chǎn)品底面的輸入端子處測試輸入電壓是否正常。建議更換完好的連接線，連接線端口卡扣卡緊，避免接觸不良。
啟機延遲時間長
在產(chǎn)品應用中，正常連接出現(xiàn)啟動延遲的情況，主要原因可能為：
母線電壓低，導致啟動電流小，產(chǎn)品內(nèi)部充電慢
排查方案：可用萬用表檢測輸入母線電壓，確認輸入電壓是否在產(chǎn)品額定范圍內(nèi)，可與產(chǎn)品標簽紙上標注的輸入電壓范圍進行比對，檢查是否在規(guī)格范圍內(nèi)。建議若超規(guī)格使用，建議使用我司輸入電壓范圍更寬的產(chǎn)品。
啟動無輸出/輸出異變（打嗝/跳變）
一切就緒，正式啟動卻發(fā)現(xiàn)無輸出或是出現(xiàn)打嗝、跳變的情況?？赡苁峭饨绛h(huán)境干擾或是外部元器件受損導致，主要原因如下：
輸出負載過重或短路/容性負載超過規(guī)格值，導致啟動瞬間過流
排查方案：斷開負載空載測試，確認輸出是否正常，確認電源后端是否存在容性負載超規(guī)格的情況，檢查電源后端是否接有啟動瞬間需求功率大的負載（如電機）。建議減小負載，在技術(shù)手冊規(guī)定負載范圍內(nèi)使用，或更換更大功率產(chǎn)品，推薦帶容性負載能力更強的產(chǎn)品；輸出端加NTC抑制啟動瞬態(tài)電流；建議客戶更改后端負載的驅(qū)動方式，不采用電源產(chǎn)品直驅(qū)。
Therefore, hr/w indicates whether the current operation is read or write through address line A3, and the data latch signal is generated by nrcs3 and nrw0 together. Kscan[2] is set as the porta interrupt input pin of HMS30C7202, and DSP communicates with Linux underlying HPI driver through interrupt.
3. Design of communication interface driver between arm and DSP
Linux is a variant of UNIX operating system. The principle and idea of writing drivers under Linux is completely similar to other UNIX systems, but it is very different from drivers under DOS or window environment. Linux drivers can be compiled into the kernel or added and unloaded dynamically in the form of modules. This feature of Linux can reduce the kernel according to the target system, which is more suitable for embedded systems.
(1) Linux driver Fundamentals
In Linux, all devices are divided into character devices, block devices and network devices. All devices are regarded as ordinary files, so you can use the same system call to open, close, read and write devices by manipulating ordinary files. Each device in the system is represented by a special device file.
In Linux, a device driver is a set of related functions. It includes device service subroutines and interrupt handlers. Each device service subroutine only deals with one device or closely related devices. Its purpose is to receive and execute Abstract commands from device independent software.
