资 源 简 介
其中的usb端口通信已经作为一个模块来使用,用户只需用以下函数就可以对usb端口进行方便地读写:
unsigned char D12_WriteEndpoint(unsigned char endp, unsigned char len, unsigned char * buf) 此为usb端点输出函数,endp是要进行通信的端点,取值为3(普通端点,最大可一次传输16byte)或5(主端点,最大可一次传输64byte);len为一次输出数据长度;*buf为数据所在位置。
usb端点数据的读操作是由底层函数自动完成的(相关函数为unsigned char D12_ReadEndpoint(unsigned char endp, unsigned char len, unsigned char * buf); 相应端点为2和4),所读到的数据存于GenEpBuf[](普通端点)、MainEpBuf[]或EpBuf[](主端点)中,用户可以直接读取使用。-Usb port communication which has been used as a module, the user can use the following function on the usb port can easily read and write:
unsigned char D12_WriteEndpoint (unsigned char endp, unsigned char len, unsigned char* buf) This is the endpoint usb output function, endp is to communicate the endpoint, the value for 3 (common endpoint, the first transmission maximum 16byte) or 5 ( the main endpoint, the first transmission maximum 64byte) len Length of output data for the first time * buf location for data.
usb endpoint data is read