USB.rar_C8051F340 ssd19_USB充电_usb数据_计步_计步器

//----------------------------------------------------------------------------- // F34x_USB_Standard_Requests.c //----------------------------------------------------------------------------- // Copyright 2005 Silicon Laboratories, Inc. // http://www.silabs.com // // Program Description: // // This source file contains the subroutines used to handle incoming // setup packets. These are called by Handle_Setup in USB_ISR.c and used for // USB chapter 9 compliance. // // How To Test: See Readme.txt // // // FID: 34X000022 // Target: C8051F34x // Tool chain: Keil C51 7.50 / Keil EVAL C51 // Silicon Laboratories IDE version 2.6 // Command Line: See Readme.txt // Project Name: F34x_USB_Interrupt // // // Release 1.0 // -Initial Revision (GP) // -22 NOV 2005 // -Ported from 'F320_USB_Bulk // //----------------------------------------------------------------------------- // Includes //----------------------------------------------------------------------------- #include "c8051F340.h" #include "F34x_USB_Register.h" #include "F34x_USB_Main.h" #include "F34x_USB_Descriptor.h" //----------------------------------------------------------------------------- // Externs //----------------------------------------------------------------------------- // These are created in USB_DESCRIPTOR.h extern device_descriptor DeviceDesc; extern configuration_descriptor ConfigDesc; extern interface_descriptor InterfaceDesc; extern endpoint_descriptor Endpoint1Desc; extern endpoint_descriptor Endpoint2Desc; extern BYTE* StringDescTable[]; extern setup_buffer Setup; // Buffer for current device request extern unsigned int DataSize; extern unsigned int DataSent; extern BYTE* DataPtr; extern BYTE Ep_Status[]; // Contains status bytes for EP 0-2 extern BYTE USB_State; // Determines current usb device state //----------------------------------------------------------------------------- // Global Variables //----------------------------------------------------------------------------- // These are response packets used for communication with host code BYTE ONES_PACKET[2] = {0x01, 0x00}; code BYTE ZERO_PACKET[2] = {0x00, 0x00}; //----------------------------------------------------------------------------- // Support Subroutines //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // Get_Status //----------------------------------------------------------------------------- // // Return Value : None // Parameters : None // // This routine returns a two byte status packet to the host // //----------------------------------------------------------------------------- void Get_Status(void) { if (Setup.wValue.c[MSB] || Setup.wValue.c[LSB] || // If non-zero return length or data length not equal to 2 then send a stall // indicating invalid request Setup.wLength.c[MSB] || (Setup.wLength.c[LSB] != 2)) { Force_Stall(); } // Determine if recipient was device, interface, or EP switch(Setup.bmRequestType) { // If recipient was device case OUT_DEVICE: if (Setup.wIndex.c[MSB] || Setup.wIndex.c[LSB]) { // Send stall if request is invalid Force_Stall(); } else { // Otherwise send 0x00, indicating bus power and no // remote wake-up supported DataPtr = (BYTE*)&ZERO_PACKET; DataSize = 2; } break; // See if recipient was interface case OUT_INTERFACE: // Only valid if device is configured and non-zero index if ((USB_State != DEV_CONFIGURED) || Setup.wIndex.c[MSB] || Setup.wIndex.c[LSB]) { // Otherwise send stall to host Force_Stall(); } else { // Status packet always returns 0x00 DataPtr = (BYTE*)&ZERO_PACKET; DataSize = 2; } break; // See if recipient was an endpoint case OUT_ENDPOINT: // Make sure device is configured and index msb = 0x00 if ((USB_State != DEV_CONFIGURED) || Setup.wIndex.c[MSB]) { Force_Stall(); // otherwise return stall to host } else { // Handle case if request is directed to EP 1 if (Setup.wIndex.c[LSB] == IN_EP1) { if (Ep_Status[1] == EP_HALT) { // If endpoint is halted, return 0x01,0x00 DataPtr = (BYTE*)&ONES_PACKET; DataSize = 2; } else { // Otherwise return 0x00,0x00 to indicate endpoint active DataPtr = (BYTE*)&ZERO_PACKET; DataSize = 2; } } else { // If request is directed to endpoint 2, send either // 0x01,0x00 if endpoint halted or 0x00,0x00 if endpoint is active if (Setup.wIndex.c[LSB] == OUT_EP2) { if (Ep_Status[2] == EP_HALT) { DataPtr = (BYTE*)&ONES_PACKET; DataSize = 2; } else { DataPtr = (BYTE*)&ZERO_PACKET; DataSize = 2; } } else { Force_Stall(); // Send stall if unexpected data } } } break; default: Force_Stall(); break; } if (Ep_Status[0] != EP_STALL) { // Set serviced Setup Packet, Endpoint 0 intransmit mode, // and reset DataSent counter POLL_WRITE_BYTE(E0CSR, rbSOPRDY); Ep_Status[0] = EP_TX; DataSent = 0; } } //----------------------------------------------------------------------------- // Clear_Feature //----------------------------------------------------------------------------- // // Return Value : None // Parameters : None // // This routine can clear Halt Endpoint features on endpoint 1 and 2. // //----------------------------------------------------------------------------- void Clear_Feature(