620 lines
17 KiB
C
620 lines
17 KiB
C
/**************************************************************************//**
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* @file usbd.c
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* @brief N9H30 USBD driver source file
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*
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* @note
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* SPDX-License-Identifier: Apache-2.0
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* Copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include "N9H30.h"
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#include "nu_usbd.h"
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/** @addtogroup N9H30_Device_Driver N9H30 Device Driver
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@{
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*/
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/** @addtogroup N9H30_USBD_Driver USBD Driver
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@{
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*/
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/** @addtogroup N9H30_USBD_EXPORTED_FUNCTIONS USBD Exported Functions
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@{
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*/
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/*--------------------------------------------------------------------------*/
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/// @cond HIDDEN_SYMBOLS
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/*!< Global variables for Control Pipe */
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S_USBD_CMD_T gUsbCmd;
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S_USBD_INFO_T *g_usbd_sInfo;
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VENDOR_REQ g_usbd_pfnVendorRequest = 0;
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CLASS_REQ g_usbd_pfnClassRequest = 0;
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SET_INTERFACE_REQ g_usbd_pfnSetInterface = 0;
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uint32_t g_u32EpStallLock = 0; /*!< Bit map flag to lock specified EP when SET_FEATURE */
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static uint8_t *g_usbd_CtrlInPointer = 0;
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static uint32_t g_usbd_CtrlMaxPktSize = 64;
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static uint8_t g_usbd_UsbConfig = 0;
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static uint8_t g_usbd_UsbAltInterface = 0;
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static uint8_t g_usbd_EnableTestMode = 0;
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static uint8_t g_usbd_TestSelector = 0;
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#ifdef __ICCARM__
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#pragma data_alignment=4
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static uint8_t g_usbd_buf[12];
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#else
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static uint8_t g_usbd_buf[12] __attribute__((aligned(4)));
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#endif
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uint8_t volatile g_usbd_Configured = 0;
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uint8_t g_usbd_CtrlZero = 0;
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uint8_t g_usbd_UsbAddr = 0;
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uint8_t g_usbd_ShortPacket = 0;
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uint32_t volatile g_usbd_DmaDone = 0;
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uint32_t g_usbd_CtrlInSize = 0;
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/// @endcond HIDDEN_SYMBOLS
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/**
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* @brief USBD Initial
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*
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* @param[in] param Descriptor
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* @param[in] pfnClassReq Class Request Callback Function
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* @param[in] pfnSetInterface SetInterface Request Callback Function
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*
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* @return None
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*
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* @details This function is used to initial USBD.
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*/
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void USBD_Open(S_USBD_INFO_T *param, CLASS_REQ pfnClassReq, SET_INTERFACE_REQ pfnSetInterface)
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{
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/* Select Vbus detect pin -> GPH0 */
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outpw(REG_SYS_GPH_MFPL, (inpw(REG_SYS_GPH_MFPL) & ~0xf) | 0x7);
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/* Enable USB device clock */
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outpw(REG_CLK_HCLKEN, inpw(REG_CLK_HCLKEN) | 0x80000);
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g_usbd_sInfo = param;
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g_usbd_pfnClassRequest = pfnClassReq;
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g_usbd_pfnSetInterface = pfnSetInterface;
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/* get EP0 maximum packet size */
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g_usbd_CtrlMaxPktSize = g_usbd_sInfo->gu8DevDesc[7];
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/* Initial USB engine */
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/* Enable PHY */
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USBD_ENABLE_PHY();
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/* wait PHY clock ready */
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while (1)
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{
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USBD->EP[EPA].EPMPS = 0x20;
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if (USBD->EP[EPA].EPMPS == 0x20)
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break;
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}
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/* Force SE0, and then clear it to connect*/
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USBD_SET_SE0();
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}
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/**
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* @brief USBD Start
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*
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* @return None
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*
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* @details This function is used to start transfer
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*/
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void USBD_Start(void)
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{
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USBD_CLR_SE0();
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}
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/**
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* @brief Process Setup Packet
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*
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* @return None
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*
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* @details This function is used to process Setup packet.
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*/
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void USBD_ProcessSetupPacket(void)
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{
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// Setup packet process
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gUsbCmd.bmRequestType = (uint8_t)(USBD->SETUP1_0 & 0xff);
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gUsbCmd.bRequest = (int8_t)(USBD->SETUP1_0 >> 8) & 0xff;
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gUsbCmd.wValue = (uint16_t)USBD->SETUP3_2;
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gUsbCmd.wIndex = (uint16_t)USBD->SETUP5_4;
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gUsbCmd.wLength = (uint16_t)USBD->SETUP7_6;
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/* USB device request in setup packet: offset 0, D[6..5]: 0=Standard, 1=Class, 2=Vendor, 3=Reserved */
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switch (gUsbCmd.bmRequestType & 0x60)
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{
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case REQ_STANDARD: // Standard
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{
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USBD_StandardRequest();
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break;
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}
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case REQ_CLASS: // Class
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{
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if (g_usbd_pfnClassRequest != NULL)
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{
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g_usbd_pfnClassRequest();
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}
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break;
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}
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case REQ_VENDOR: // Vendor
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{
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if (g_usbd_pfnVendorRequest != NULL)
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{
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g_usbd_pfnVendorRequest();
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}
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break;
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}
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default: // reserved
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{
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/* Setup error, stall the device */
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USBD_SET_CEP_STATE(USBD_CEPCTL_STALLEN_Msk);
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break;
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}
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}
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}
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/**
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* @brief Get Descriptor request
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*
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* @return None
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*
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* @details This function is used to process GetDescriptor request.
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*/
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int USBD_GetDescriptor(void)
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{
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uint32_t u32Len;
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u32Len = gUsbCmd.wLength;
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g_usbd_CtrlZero = 0;
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switch ((gUsbCmd.wValue & 0xff00) >> 8)
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{
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// Get Device Descriptor
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case DESC_DEVICE:
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{
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u32Len = Minimum(u32Len, LEN_DEVICE);
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8DevDesc, u32Len);
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break;
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}
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// Get Configuration Descriptor
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case DESC_CONFIG:
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{
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uint32_t u32TotalLen;
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u32TotalLen = g_usbd_sInfo->gu8ConfigDesc[3];
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u32TotalLen = g_usbd_sInfo->gu8ConfigDesc[2] + (u32TotalLen << 8);
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u32Len = Minimum(u32Len, u32TotalLen);
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if ((u32Len % g_usbd_CtrlMaxPktSize) == 0)
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g_usbd_CtrlZero = 1;
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8ConfigDesc, u32Len);
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break;
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}
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// Get Qualifier Descriptor
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case DESC_QUALIFIER:
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{
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u32Len = Minimum(u32Len, LEN_QUALIFIER);
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8QualDesc, u32Len);
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break;
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}
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// Get Other Speed Descriptor - Full speed
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case DESC_OTHERSPEED:
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{
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uint32_t u32TotalLen;
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u32TotalLen = g_usbd_sInfo->gu8OtherConfigDesc[3];
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u32TotalLen = g_usbd_sInfo->gu8OtherConfigDesc[2] + (u32TotalLen << 8);
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u32Len = Minimum(u32Len, u32TotalLen);
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if ((u32Len % g_usbd_CtrlMaxPktSize) == 0)
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g_usbd_CtrlZero = 1;
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8OtherConfigDesc, u32Len);
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break;
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}
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// Get HID Descriptor
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case DESC_HID:
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{
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u32Len = Minimum(u32Len, LEN_HID);
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USBD_MemCopy(g_usbd_buf, (uint8_t *)&g_usbd_sInfo->gu8ConfigDesc[LEN_CONFIG + LEN_INTERFACE], u32Len);
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USBD_PrepareCtrlIn(g_usbd_buf, u32Len);
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break;
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}
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// Get Report Descriptor
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case DESC_HID_RPT:
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{
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if ((u32Len % g_usbd_CtrlMaxPktSize) == 0)
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g_usbd_CtrlZero = 1;
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u32Len = Minimum(u32Len, g_usbd_sInfo->gu32HidReportSize[gUsbCmd.wIndex & 0xff]);
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8HidReportDesc[gUsbCmd.wIndex & 0xff], u32Len);
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break;
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}
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// Get String Descriptor
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case DESC_STRING:
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{
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// Get String Descriptor
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if ((gUsbCmd.wValue & 0xff) < 4)
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{
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u32Len = Minimum(u32Len, g_usbd_sInfo->gu8StringDesc[gUsbCmd.wValue & 0xff][0]);
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if ((u32Len % g_usbd_CtrlMaxPktSize) == 0)
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g_usbd_CtrlZero = 1;
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USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8StringDesc[gUsbCmd.wValue & 0xff], u32Len);
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}
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else
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{
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USBD_SET_CEP_STATE(USBD_CEPCTL_STALLEN_Msk);
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return 1;
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}
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break;
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}
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default:
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// Not support. Reply STALL.
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USBD_SET_CEP_STATE(USBD_CEPCTL_STALLEN_Msk);
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return 1;
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}
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return 0;
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}
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/**
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* @brief Process USB standard request
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*
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* @return None
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*
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* @details This function is used to process USB Standard Request.
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*/
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void USBD_StandardRequest(void)
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{
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/* clear global variables for new request */
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g_usbd_CtrlInPointer = 0;
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g_usbd_CtrlInSize = 0;
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if (gUsbCmd.bmRequestType & 0x80) /* request data transfer direction */
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{
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// Device to host
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switch (gUsbCmd.bRequest)
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{
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case GET_CONFIGURATION:
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{
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// Return current configuration setting
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USBD_PrepareCtrlIn((uint8_t *)&g_usbd_UsbConfig, 1);
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_INTKIF_Msk);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_INTKIEN_Msk);
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break;
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}
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case GET_DESCRIPTOR:
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{
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if (!USBD_GetDescriptor())
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{
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_INTKIF_Msk);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_INTKIEN_Msk);
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}
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break;
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}
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case GET_INTERFACE:
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{
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// Return current interface setting
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USBD_PrepareCtrlIn((uint8_t *)&g_usbd_UsbAltInterface, 1);
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_INTKIF_Msk);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_INTKIEN_Msk);
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break;
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}
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case GET_STATUS:
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{
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// Device
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if (gUsbCmd.bmRequestType == 0x80)
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{
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if (g_usbd_sInfo->gu8ConfigDesc[7] & 0x40)
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g_usbd_buf[0] = 1; // Self-Powered
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else
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g_usbd_buf[0] = 0; // bus-Powered
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}
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// Interface
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else if (gUsbCmd.bmRequestType == 0x81)
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g_usbd_buf[0] = 0;
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// Endpoint
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else if (gUsbCmd.bmRequestType == 0x82)
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{
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uint8_t ep = gUsbCmd.wIndex & 0xF;
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g_usbd_buf[0] = USBD_GetStall(ep) ? 1 : 0;
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}
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g_usbd_buf[1] = 0;
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USBD_PrepareCtrlIn(g_usbd_buf, 2);
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_INTKIF_Msk);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_INTKIEN_Msk);
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break;
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}
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default:
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{
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/* Setup error, stall the device */
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USBD_SET_CEP_STATE(USBD_CEPCTL_STALLEN_Msk);
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break;
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}
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}
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}
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else
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{
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// Host to device
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switch (gUsbCmd.bRequest)
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{
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case CLEAR_FEATURE:
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{
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if ((gUsbCmd.wValue & 0xff) == FEATURE_ENDPOINT_HALT)
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{
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int32_t epNum, i;
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/* EP number stall is not allow to be clear in MSC class "Error Recovery Test".
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a flag: g_u32EpStallLock is added to support it */
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epNum = gUsbCmd.wIndex & 0xF;
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for (i = 0; i < USBD_MAX_EP; i++)
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{
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if ((((USBD->EP[i].EPCFG & 0xf0) >> 4) == epNum) && ((g_u32EpStallLock & (1 << i)) == 0))
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{
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USBD->EP[i].EPRSPCTL = (USBD->EP[i].EPRSPCTL & 0xef) | USB_EP_RSPCTL_TOGGLE;
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}
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}
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}
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/* Status stage */
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_STSDONEIF_Msk);
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USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_STSDONEIEN_Msk);
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break;
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}
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case SET_ADDRESS:
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{
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g_usbd_UsbAddr = (uint8_t)gUsbCmd.wValue;
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// DATA IN for end of setup
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/* Status Stage */
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_STSDONEIF_Msk);
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USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_STSDONEIEN_Msk);
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break;
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}
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case SET_CONFIGURATION:
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{
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g_usbd_UsbConfig = (uint8_t)gUsbCmd.wValue;
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g_usbd_Configured = 1;
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// DATA IN for end of setup
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/* Status stage */
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_STSDONEIF_Msk);
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USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_STSDONEIEN_Msk);
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break;
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}
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case SET_FEATURE:
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{
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if ((gUsbCmd.wValue & 0x3) == 2) /* TEST_MODE*/
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{
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g_usbd_EnableTestMode = 1;
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g_usbd_TestSelector = gUsbCmd.wIndex >> 8;
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}
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/* Status stage */
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_STSDONEIF_Msk);
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USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_STSDONEIEN_Msk);
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break;
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}
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case SET_INTERFACE:
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{
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g_usbd_UsbAltInterface = (uint8_t)gUsbCmd.wValue;
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if (g_usbd_pfnSetInterface != NULL)
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g_usbd_pfnSetInterface(g_usbd_UsbAltInterface);
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/* Status stage */
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USBD_CLR_CEP_INT_FLAG(USBD_CEPINTSTS_STSDONEIF_Msk);
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USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
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USBD_ENABLE_CEP_INT(USBD_CEPINTEN_STSDONEIEN_Msk);
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break;
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}
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default:
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{
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/* Setup error, stall the device */
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USBD_SET_CEP_STATE(USBD_CEPCTL_STALLEN_Msk);
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break;
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}
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}
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}
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}
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#define TEST_J 0x01 /*!< TEST J \hideinitializer */
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#define TEST_K 0x02 /*!< TEST K \hideinitializer */
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#define TEST_SE0_NAK 0x03 /*!< TEST SE0 \hideinitializer */
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#define TEST_PACKET 0x04 /*!< TEST Packet \hideinitializer */
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#define TEST_FORCE_ENABLE 0x05 /*!< TEST Force enable \hideinitializer */
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/**
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* @brief Update Device State
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*
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* @return None
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*
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* @details This function is used to update Device state when Setup packet complete
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*/
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void USBD_UpdateDeviceState(void)
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{
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switch (gUsbCmd.bRequest)
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{
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case SET_ADDRESS:
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{
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USBD_SET_ADDR(g_usbd_UsbAddr);
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break;
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}
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case SET_CONFIGURATION:
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{
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if (g_usbd_UsbConfig == 0)
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{
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int volatile i;
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/* Reset PID DATA0 */
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for (i = 0; i < USBD_MAX_EP; i++)
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{
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if (USBD->EP[i].EPCFG & 0x1)
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{
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USBD->EP[i].EPRSPCTL = USB_EP_RSPCTL_TOGGLE;
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}
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}
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}
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break;
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}
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case SET_FEATURE:
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{
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if (gUsbCmd.wValue == FEATURE_ENDPOINT_HALT)
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USBD_SetStall(gUsbCmd.wIndex & 0xF);
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else if (g_usbd_EnableTestMode)
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{
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g_usbd_EnableTestMode = 0;
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if (g_usbd_TestSelector == TEST_J)
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USBD->TEST = TEST_J;
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else if (g_usbd_TestSelector == TEST_K)
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USBD->TEST = TEST_K;
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else if (g_usbd_TestSelector == TEST_SE0_NAK)
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USBD->TEST = TEST_SE0_NAK;
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else if (g_usbd_TestSelector == TEST_PACKET)
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USBD->TEST = TEST_PACKET;
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else if (g_usbd_TestSelector == TEST_FORCE_ENABLE)
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USBD->TEST = TEST_FORCE_ENABLE;
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}
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break;
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}
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case CLEAR_FEATURE:
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{
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if (gUsbCmd.wValue == FEATURE_ENDPOINT_HALT)
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USBD_ClearStall(gUsbCmd.wIndex & 0xF);
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break;
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}
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default:
|
|
;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Prepare Control IN transaction
|
|
*
|
|
* @param[in] pu8Buf Control IN data pointer
|
|
* @param[in] u32Size IN transfer size
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function is used to prepare Control IN transfer
|
|
*/
|
|
void USBD_PrepareCtrlIn(uint8_t *pu8Buf, uint32_t u32Size)
|
|
{
|
|
g_usbd_CtrlInPointer = pu8Buf;
|
|
g_usbd_CtrlInSize = u32Size;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief Start Control IN transfer
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function is used to start Control IN
|
|
*/
|
|
void USBD_CtrlIn(void)
|
|
{
|
|
int volatile i;
|
|
uint32_t volatile count;
|
|
|
|
// Process remained data
|
|
if (g_usbd_CtrlInSize >= g_usbd_CtrlMaxPktSize)
|
|
{
|
|
// Data size > MXPLD
|
|
for (i = 0; i < (g_usbd_CtrlMaxPktSize >> 2); i++, g_usbd_CtrlInPointer += 4)
|
|
USBD->cep.CEPDAT = *(uint32_t *)g_usbd_CtrlInPointer;
|
|
USBD_START_CEP_IN(g_usbd_CtrlMaxPktSize);
|
|
g_usbd_CtrlInSize -= g_usbd_CtrlMaxPktSize;
|
|
}
|
|
else
|
|
{
|
|
// Data size <= MXPLD
|
|
for (i = 0; i < (g_usbd_CtrlInSize >> 2); i++, g_usbd_CtrlInPointer += 4)
|
|
USBD->cep.CEPDAT = *(uint32_t *)g_usbd_CtrlInPointer;
|
|
|
|
count = g_usbd_CtrlInSize % 4;
|
|
for (i = 0; i < count; i++)
|
|
USBD->cep.CEPDAT_BYTE = *(uint8_t *)(g_usbd_CtrlInPointer + i);
|
|
|
|
USBD_START_CEP_IN(g_usbd_CtrlInSize);
|
|
g_usbd_CtrlInPointer = 0;
|
|
g_usbd_CtrlInSize = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Start Control OUT transaction
|
|
*
|
|
* @param[in] pu8Buf Control OUT data pointer
|
|
* @param[in] u32Size OUT transfer size
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function is used to start Control OUT transfer
|
|
*/
|
|
void USBD_CtrlOut(uint8_t *pu8Buf, uint32_t u32Size)
|
|
{
|
|
int volatile i;
|
|
|
|
while (1)
|
|
{
|
|
if (USBD->CEPINTSTS & USBD_CEPINTSTS_RXPKIF_Msk)
|
|
{
|
|
for (i = 0; i < u32Size; i++)
|
|
*(uint8_t *)(pu8Buf + i) = USBD->cep.CEPDAT_BYTE;
|
|
USBD->CEPINTSTS = USBD_CEPINTSTS_RXPKIF_Msk;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Clear all software flags
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function is used to clear all software control flag
|
|
*/
|
|
void USBD_SwReset(void)
|
|
{
|
|
// Reset all variables for protocol
|
|
g_usbd_UsbAddr = 0;
|
|
g_usbd_DmaDone = 0;
|
|
g_usbd_ShortPacket = 0;
|
|
g_usbd_Configured = 0;
|
|
|
|
// Reset USB device address
|
|
USBD_SET_ADDR(0);
|
|
}
|
|
|
|
/**
|
|
* @brief USBD Set Vendor Request
|
|
*
|
|
* @param[in] pfnVendorReq Vendor Request Callback Function
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function is used to set USBD vendor request callback function
|
|
*/
|
|
void USBD_SetVendorRequest(VENDOR_REQ pfnVendorReq)
|
|
{
|
|
g_usbd_pfnVendorRequest = pfnVendorReq;
|
|
}
|
|
|
|
|
|
/*@}*/ /* end of group N9H30_USBD_EXPORTED_FUNCTIONS */
|
|
|
|
/*@}*/ /* end of group N9H30_USBD_Driver */
|
|
|
|
/*@}*/ /* end of group N9H30_Device_Driver */
|
|
|
|
/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/
|