USB Host 驱动CDC类设备 FT232

/********************************** (C) COPYRIGHT ******************************* * File Name : app_km.c * Author : WCH * Version : V1.0.0 * Date : 2022/09/01 * Description : The USB host operates the keyboard and mouse. ********************************************************************************* * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd. * Attention: This software (modified or not) and binary are used for * microcontroller manufactured by Nanjing Qinheng Microelectronics. *******************************************************************************/ /********************************************************************************/ /* Header File */ #include "usb_host_config.h" /*******************************************************************************/ /* Variable Definition */ uint8_t DevDesc_Buf[ 18 ]; // Device Descriptor Buffer uint8_t Com_Buf[ DEF_COM_BUF_LEN ]; // General Buffer struct _ROOT_HUB_DEVICE RootHubDev[ DEF_TOTAL_ROOT_HUB ]; struct __HOST_CTL HostCtl[ DEF_TOTAL_ROOT_HUB * DEF_ONE_USB_SUP_DEV_TOTAL ]; extern volatile u8 RxCnt1; extern u8 RxFlag; extern u8 RxBuffer1[255]; /*******************************************************************************/ /* Interrupt Function Declaration */ void TIM3_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast"))); /********************************************************************* * @fn TIM3_Init * * @brief Initialize timer3 for getting keyboard and mouse data. * * @param arr - The specific period value. * psc - The specifies prescaler value. * * @return none */ void TIM3_Init( uint16_t arr, uint16_t psc ) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure = { 0 }; NVIC_InitTypeDef NVIC_InitStructure = { 0 }; /* Enable timer3 clock */ RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM3, ENABLE ); /* Initialize timer3 */ TIM_TimeBaseStructure.TIM_Period = arr; TIM_TimeBaseStructure.TIM_Prescaler = psc; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit( TIM3, &TIM_TimeBaseStructure ); /* Enable updating timer3 interrupt */ TIM_ITConfig( TIM3, TIM_IT_Update, ENABLE ); /* Configure timer3 interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init( &NVIC_InitStructure ); /* Enable timer3 */ TIM_Cmd( TIM3, ENABLE ); /* Enable timer3 interrupt */ NVIC_EnableIRQ( TIM3_IRQn ); } /********************************************************************* * @fn TIM3_IRQHandler * * @brief This function handles TIM3 global interrupt request. * * @return none */ void TIM3_IRQHandler( void ) { uint8_t usb_port; uint8_t hub_port; uint8_t index; uint8_t intf_num, in_num; if( TIM_GetITStatus( TIM3, TIM_IT_Update ) != RESET ) { /* Clear interrupt flag */ TIM_ClearITPendingBit( TIM3, TIM_IT_Update ); /* USB HID Device Input Endpoint Timing */ for( usb_port = 0; usb_port < DEF_TOTAL_ROOT_HUB; usb_port++ ) { if( RootHubDev[ usb_port ].bStatus >= ROOT_DEV_SUCCESS ) { index = RootHubDev[ usb_port ].DeviceIndex; if(( RootHubDev[ usb_port ].bType == USB_DEV_CLASS_HID) ||(RootHubDev[ usb_port ].bType == USB_DEV_CLASS_VEN_SPEC )) { for( intf_num = 0; intf_num < HostCtl[ index ].InterfaceNum; intf_num++ ) { for( in_num = 0; in_num < HostCtl[ index ].Interface[ intf_num ].InEndpNum; in_num++ ) { HostCtl[ index ].Interface[ intf_num ].InEndpTimeCount[ in_num ]++; } } } else if( RootHubDev[ usb_port ].bType == USB_DEV_CLASS_HUB ) { HostCtl[ index ].Interface[ 0 ].InEndpTimeCount[ 0 ]++; for( hub_port = 0; hub_port < RootHubDev[ usb_port ].bPortNum; hub_port++ ) { if( RootHubDev[ usb_port ].Device[ hub_port ].bStatus >= ROOT_DEV_SUCCESS ) { index = RootHubDev[ usb_port ].Device[ hub_port ].DeviceIndex; if( RootHubDev[ usb_port ].Device[ hub_port ].bType == USB_DEV_CLASS_HID ) { for( intf_num = 0; intf_num < HostCtl[ index ].InterfaceNum; intf_num++ ) { for( in_num = 0; in_num < HostCtl[ index ].Interface[ intf_num ].InEndpNum; in_num++ ) { HostCtl[ index ].Interface[ intf_num ].InEndpTimeCount[ in_num ]++; } } } } } } } } } } /********************************************************************* * @fn USBH_CheckRootHubPortStatus * * @brief Check status of USB port. * * @para index: USB host port * * @return The current status of the port. */ uint8_t USBH_CheckRootHubPortStatus( uint8_t usb_port ) { uint8_t s = ERR_USB_UNSUPPORT; if( usb_port == DEF_USBFS_PORT_INDEX ) { #if DEF_USBFS_PORT_EN s = USBFSH_CheckRootHubPortStatus( RootHubDev[ usb_port ].bStatus ); #endif } else if( usb_port == DEF_USBHS_PORT_INDEX ) { #if DEF_USBHS_PORT_EN s = USBHSH_CheckRootHubPortStatus( RootHubDev[ usb_port ].bStatus ); #endif } return s; } /********************************************************************* * @fn USBH_ResetRootHubPort * * @brief Reset USB port. * * @para index: USB host port * mod: Reset host port operating mode. * 0 -> reset and wait end * 1 -> begin reset * 2 -> end reset * * @return none */ void USBH_ResetRootHubPort( uint8_t usb_port, uint8_t mode ) { if( usb_port == DEF_USBFS_PORT_INDEX ) { #if DEF_USBFS_PORT_EN USBFSH_ResetRootHubPort( mode ); #endif } else if( usb_port == DEF_USBHS_PORT_INDEX ) { #if DEF_USBHS_PORT_EN USBHSH_ResetRootHubPort( mode ); #endif } } /********************************************************************* * @fn USBH_EnableRootHubPort * * @brief Enable USB host port. * * @para index: USB host port * * @return none */ uint8_t USBH_EnableRootHubPort( uint8_t usb_port ) { uint8_t s = ERR_USB_UNSUPPORT; if( usb_port == DEF_USBFS_PORT_INDEX ) { #if DEF_USBFS_PORT_EN s = USBFSH_EnableRootHubPort( &RootHubDev[ usb_port ].bSpeed ); #endif } else if( usb_port == DEF_USBHS_PORT_INDEX ) { #if DEF_USBHS_PORT_EN s = USBHSH_EnableRootHubPort( &RootHubDev[ usb_port ].bSpeed ); #endif } return s; } /********************************************************************* * @fn USBH_GetDeviceDescr * * @brief Get the device descriptor of the USB device. * * @para index: USB host port * * @return none */ uint8_t USBH_GetDeviceDescr( uint8_t usb_port ) { uint8_t s = ERR_USB_UNSUPPORT;