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Usb.c
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Usb.c
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#include <string.h>
#include "Type.h"
#include "Ch552.h"
#include "Mcu.h"
#include "PinDefine.h"
#include "System.h"
#include "UsbDef.h"
#include "Usb.h"
#include "UsbDescriptor.h"
#define THIS_ENDP0_SIZE DEFAULT_ENDP0_SIZE
static UINT8X Ep0Buffer[8>(THIS_ENDP0_SIZE+2)?8:(THIS_ENDP0_SIZE+2)] _at_ 0x0000; //端点0 OUT&IN缓冲区，必须是偶地址
static UINT8X Ep1Buffer[64>(MAX_PACKET_SIZE+2)?64:(MAX_PACKET_SIZE+2)] _at_ 0x000a; //端点1 IN缓冲区,必须是偶地址
static UINT8X Ep2Buffer[64>(MAX_PACKET_SIZE+2)?64:(MAX_PACKET_SIZE+2)] _at_ 0x0050; //端点2 IN缓冲区,必须是偶地址
static UINT8 SetupReq,SetupLen,UsbConfig;
static BOOL PCSleeped = FALSE;
static BOOL Ready = FALSE;
static PUINT8 pDescr;
//keyboard led status
static UINT8 volatile keyboardLed = 0x00;
#define UsbSetupBuf ((PUSB_SETUP_REQ)Ep0Buffer)
/*******************************************************************************
* Function Name : CH554SoftReset()
* Description : CH554软复位
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void CH554SoftReset()
{
SAFE_MOD = 0x55;
SAFE_MOD = 0xAA;
GLOBAL_CFG |=bSW_RESET;
}
/*******************************************************************************
* Function Name : CH554USBDevWakeup()
* Description : CH554设备模式唤醒主机，发送K信号
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void CH554USBDevWakeup()
{
UDEV_CTRL |= bUD_LOW_SPEED;
mDelaymS(2);
UDEV_CTRL &= ~bUD_LOW_SPEED;
}
static UINT8 HexToAscii(UINT8 hex)
{
if (hex <= 9)
{
hex += '0';
}
else if (hex >= 10 && hex <= 15)
{
hex += 'A' - 10;
}
return hex;
}
//for unique serial no
static void InitSerialString()
{
UINT8 i = 2;
UINT8 dat;
dat = *((PUINT8C)(0x3FFC));
StringSerial[i++] = HexToAscii(dat & 0x0f);
StringSerial[i++] = 0;
StringSerial[i++] = HexToAscii(dat >> 4);
StringSerial[i++] = 0;
dat = *((PUINT8C)(0x3FFD));
StringSerial[i++] = HexToAscii(dat & 0x0f);
StringSerial[i++] = 0;
StringSerial[i++] = HexToAscii(dat >> 4);
StringSerial[i++] = 0;
dat = *((PUINT8C)(0x3FFE));
StringSerial[i++] = HexToAscii(dat & 0x0f);
StringSerial[i++] = 0;
StringSerial[i++] = HexToAscii(dat >> 4);
StringSerial[i++] = 0;
dat = *((PUINT8C)(0x3FFF));
StringSerial[i++] = HexToAscii(dat & 0x0f);
StringSerial[i++] = 0;
StringSerial[i++] = HexToAscii(dat >> 4);
StringSerial[i++] = 0;
}
/*******************************************************************************
* Function Name : USBDeviceInit()
* Description : USB设备模式配置,设备模式启动，收发端点配置，中断开启
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USBDeviceInit()
{
InitSerialString();
IE_USB = 0;
USB_CTRL = 0x00; // 先设定USB设备模式
USB_CTRL &= ~bUC_LOW_SPEED;
UDEV_CTRL &= ~bUD_LOW_SPEED;
UEP0_DMA = (UINT16)Ep0Buffer; //端点0数据传输地址
UEP4_1_MOD &= ~(bUEP4_RX_EN | bUEP4_TX_EN); //端点0单64字节收发缓冲区
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK; //OUT事务返回ACK，IN事务返回NAK
UEP1_DMA = (UINT16)Ep1Buffer; //端点1数据传输地址
UEP4_1_MOD = UEP4_1_MOD & ~bUEP1_BUF_MOD | bUEP1_TX_EN; //端点1发送使能 64字节缓冲区
UEP1_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK; //端点1自动翻转同步标志位，IN事务返回NAK
UEP2_DMA = (UINT16)Ep2Buffer; //端点2数据传输地址
UEP2_3_MOD = UEP2_3_MOD & ~bUEP2_BUF_MOD | bUEP2_TX_EN; //端点2发送使能 64字节缓冲区
UEP2_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK; //端点2自动翻转同步标志位，IN事务返回NAK
USB_DEV_AD = 0x00;
UDEV_CTRL = bUD_PD_DIS; // 禁止DP/DM下拉电阻
USB_CTRL = bUC_DEV_PU_EN | bUC_INT_BUSY | bUC_DMA_EN; // 启动USB设备及DMA，在中断期间中断标志未清除前自动返回NAK
UDEV_CTRL |= bUD_PORT_EN; // 允许USB端口
USB_INT_FG = 0xFF; // 清中断标志
USB_INT_EN = bUIE_SUSPEND | bUIE_TRANSFER | bUIE_BUS_RST;
UEP1_T_LEN = 0; //预使用发送长度一定要清空
UEP2_T_LEN = 0; //预使用发送长度一定要清空
IE_USB = 1;
}
UINT8 GetKeyboardLedStatus()
{
UINT8 led;
HAL_CRITICAL_STATEMENT(led = keyboardLed);
return led;
}
BOOL CheckPCReady()
{
BOOL ready;
HAL_CRITICAL_STATEMENT(ready = Ready);
return ready;
}
void SetPCSleeped(BOOL sleeped)
{
HAL_CRITICAL_STATEMENT(PCSleeped = sleeped);
}
BOOL CheckPCSleeped()
{
BOOL sleeped;
HAL_CRITICAL_STATEMENT(sleeped = PCSleeped);
return sleeped;
}
/*******************************************************************************
* Function Name : Enp1IntIn()
* Description : USB设备模式端点1的中断上传
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void Enp1IntIn(UINT8 *dat, UINT8 size)
{
memcpy(Ep1Buffer, dat, size);
UEP1_T_LEN = size;
UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_ACK; //有数据时上传数据并应答ACK
}
/*******************************************************************************
* Function Name : Enp2IntIn()
* Description : USB设备模式端点2的中断上传
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void Enp2IntIn(UINT8 *dat, UINT8 size)
{
memcpy(Ep2Buffer, dat, size);
UEP2_T_LEN = size;
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_ACK; //有数据时上传数据并应答ACK
}
/*******************************************************************************
* Function Name : DeviceInterrupt()
* Description : CH559USB中断处理函数
*******************************************************************************/
void UsbIsr(void) interrupt INT_NO_USB using 1 //USB中断服务程序,使用寄存器组1
{
UINT8 len = 0;
if(UIF_TRANSFER) //USB传输完成标志
{
switch (USB_INT_ST & (MASK_UIS_TOKEN | MASK_UIS_ENDP))
{
case UIS_TOKEN_IN | 2: //endpoint 2# 中断端点上传
UEP2_T_LEN = 0; //预使用发送长度一定要清空
// UEP1_CTRL ^= bUEP_T_TOG; //如果不设置自动翻转则需要手动翻转
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_NAK; //默认应答NAK
break;
case UIS_TOKEN_IN | 1: //endpoint 1# 中断端点上传
UEP1_T_LEN = 0; //预使用发送长度一定要清空
// UEP2_CTRL ^= bUEP_T_TOG; //如果不设置自动翻转则需要手动翻转
UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_NAK; //默认应答NAK
break;
case UIS_TOKEN_SETUP | 0: //SETUP事务
len = USB_RX_LEN;
if(len == (sizeof(USB_SETUP_REQ)))
{
SetupLen = UsbSetupBuf->wLengthL;
if(UsbSetupBuf->wLengthH || SetupLen > 0x7F )
{
SetupLen = 0x7F; // 限制总长度
}
len = 0; // 默认为成功并且上传0长度
SetupReq = UsbSetupBuf->bRequest;
if (( UsbSetupBuf->bRequestType & USB_REQ_TYP_MASK ) != USB_REQ_TYP_STANDARD)/* HID类命令 */
{
switch( SetupReq )
{
case HID_GET_REPORT:
break;
case HID_GET_IDLE:
break;
case HID_GET_PROTOCOL:
break;
case HID_SET_REPORT:
break;
case HID_SET_IDLE:
break;
case HID_SET_PROTOCOL:
break;
default:
len = 0xFF; /*命令不支持*/
break;
}
}
else
{//标准请求
switch(SetupReq) //请求码
{
case USB_GET_DESCRIPTOR:
switch(UsbSetupBuf->wValueH)
{
case USB_DESCR_TYP_DEVICE: //设备描述符
pDescr = DevDesc.descr; //把设备描述符送到要发送的缓冲区
len = DevDesc.size;
//restart enumeration
Ready = FALSE;
break;
case USB_DESCR_TYP_CONFIG: //配置描述符
pDescr = CfgDesc.descr; //把设备描述符送到要发送的缓冲区
len = CfgDesc.size;
break;
case USB_DESCR_TYP_STRING:
pDescr = StringDescriptors[UsbSetupBuf->wValueL].descr;
len = StringDescriptors[UsbSetupBuf->wValueL].size;
break;
case USB_DESCR_TYP_REPORT: //报表描述符
if(UsbSetupBuf->wIndexL == 0) //接口0报表描述符
{
pDescr = KeyRepDesc.descr; //数据准备上传
len = KeyRepDesc.size;
}
else if(UsbSetupBuf->wIndexL == 1) //接口1报表描述符
{
pDescr = MouseRepDesc.descr; //数据准备上传
len = MouseRepDesc.size;
Ready = TRUE; //如果有更多接口，该标准位应该在最后一个接口配置完成后有效
}
else
{
len = 0xFF; //本程序只有2个接口，这句话正常不可能执行
}
break;
case USB_DESCR_TYP_QUALIF:
pDescr = DeviceQualifierCfg.descr;
len = DeviceQualifierCfg.size;
break;
default:
len = 0xFF; //不支持的命令或者出错
break;
}
if (len != 0xFF)
{
if (SetupLen > len)
{
SetupLen = len; //限制总长度
}
len = SetupLen >= DEFAULT_ENDP0_SIZE ? DEFAULT_ENDP0_SIZE : SetupLen; //本次传输长度
memcpy(Ep0Buffer, pDescr, len); //加载上传数据
SetupLen -= len;
pDescr += len;
}
break;
case USB_SET_ADDRESS:
SetupLen = UsbSetupBuf->wValueL; //暂存USB设备地址
break;
case USB_GET_CONFIGURATION:
Ep0Buffer[0] = UsbConfig;
if (SetupLen >= 1)
{
len = 1;
}
break;
case USB_SET_CONFIGURATION:
UsbConfig = UsbSetupBuf->wValueL;
break;
case 0x0A:
break;
case USB_CLEAR_FEATURE: //Clear Feature
if ((UsbSetupBuf->bRequestType & USB_REQ_RECIP_MASK) == USB_REQ_RECIP_ENDP)// 端点
{
switch( UsbSetupBuf->wIndexL )
{
case 0x82:
UEP2_CTRL = UEP2_CTRL & ~ ( bUEP_T_TOG | MASK_UEP_T_RES ) | UEP_T_RES_NAK;
break;
case 0x81:
UEP1_CTRL = UEP1_CTRL & ~ ( bUEP_T_TOG | MASK_UEP_T_RES ) | UEP_T_RES_NAK;
break;
case 0x01:
UEP1_CTRL = UEP1_CTRL & ~ ( bUEP_R_TOG | MASK_UEP_R_RES ) | UEP_R_RES_ACK;
break;
default:
len = 0xFF; // 不支持的端点
break;
}
}
if ((UsbSetupBuf->bRequestType & USB_REQ_RECIP_MASK) == USB_REQ_RECIP_DEVICE )// 璁惧
{
len = 0xFF;
break;
}
else
{
len = 0xFF; // 涓嶆槸绔偣涓嶆敮鎸�
}
break;
case USB_SET_FEATURE: /* Set Feature */
if( ( UsbSetupBuf->bRequestType & USB_REQ_RECIP_MASK ) == USB_REQ_RECIP_DEVICE ) /* 设置设备 */
{
if( ( ( ( UINT16 )UsbSetupBuf->wValueH << 8 ) | UsbSetupBuf->wValueL ) == 0x01 )
{
if( CfgDesc.descr[ 7 ] & 0x20 )
{
/* 设置唤醒使能标志 */
PCSleeped = TRUE;
}
else
{
len = 0xFF; /* 操作失败 */
}
}
else
{
len = 0xFF; /* 操作失败 */
}
}
else if( ( UsbSetupBuf->bRequestType & USB_REQ_RECIP_MASK ) == USB_REQ_RECIP_ENDP ) /* 设置端点 */
{
if( ( ( ( UINT16 )UsbSetupBuf->wValueH << 8 ) | UsbSetupBuf->wValueL ) == 0x00 )
{
switch( ( ( UINT16 )UsbSetupBuf->wIndexH << 8 ) | UsbSetupBuf->wIndexL )
{
case 0x82:
UEP2_CTRL = UEP2_CTRL & (~bUEP_T_TOG) | UEP_T_RES_STALL;/* 设置端点2 IN STALL */
break;
case 0x02:
UEP2_CTRL = UEP2_CTRL & (~bUEP_R_TOG) | UEP_R_RES_STALL;/* 设置端点2 OUT Stall */
break;
case 0x81:
UEP1_CTRL = UEP1_CTRL & (~bUEP_T_TOG) | UEP_T_RES_STALL;/* 设置端点1 IN STALL */
break;
default:
len = 0xFF; //操作失败
break;
}
}
else
{
len = 0xFF; //操作失败
}
}
else
{
len = 0xFF; //操作失败
}
break;
case USB_GET_STATUS:
Ep0Buffer[0] = 0x00;
Ep0Buffer[1] = 0x00;
if ( SetupLen >= 2 )
{
len = 2;
}
else
{
len = SetupLen;
}
break;
default:
len = 0xFF; //操作失败
break;
}
}
}
else
{
len = 0xff; //包长度错误
}
if (len == 0xff)
{
SetupReq = 0xFF;
UEP0_CTRL = bUEP_R_TOG | bUEP_T_TOG | UEP_R_RES_STALL | UEP_T_RES_STALL;//STALL
}
else if (len <= DEFAULT_ENDP0_SIZE) //上传数据或者状态阶段返回0长度包
{
UEP0_T_LEN = len;
UEP0_CTRL = bUEP_R_TOG | bUEP_T_TOG | UEP_R_RES_ACK | UEP_T_RES_ACK;//默认数据包是DATA1，返回应答ACK
}
else
{
UEP0_T_LEN = 0; //虽然尚未到状态阶段，但是提前预置上传0长度数据包以防主机提前进入状态阶段
UEP0_CTRL = bUEP_R_TOG | bUEP_T_TOG | UEP_R_RES_ACK | UEP_T_RES_ACK;//默认数据包是DATA1,返回应答ACK
}
break;
case UIS_TOKEN_IN | 0: //endpoint0 IN
switch(SetupReq)
{
case USB_GET_DESCRIPTOR:
case HID_GET_REPORT:
len = SetupLen >= DEFAULT_ENDP0_SIZE ? DEFAULT_ENDP0_SIZE : SetupLen; //本次传输长度
memcpy(Ep0Buffer, pDescr, len); //加载上传数据
SetupLen -= len;
pDescr += len;
UEP0_T_LEN = len;
UEP0_CTRL ^= bUEP_T_TOG; //同步标志位翻转
if (len < DEFAULT_ENDP0_SIZE)
{
SetupReq = 0xFF;
}
break;
case USB_SET_ADDRESS:
USB_DEV_AD = USB_DEV_AD & bUDA_GP_BIT | SetupLen;
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK;
break;
default:
UEP0_T_LEN = 0; //状态阶段完成中断或者是强制上传0长度数据包结束控制传输
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK;
break;
}
break;
case UIS_TOKEN_OUT | 0: // endpoint0 OUT
len = USB_RX_LEN;
if (SetupReq == HID_SET_REPORT) //set report
{
keyboardLed = Ep0Buffer[0];
}
UEP0_CTRL ^= bUEP_R_TOG; //同步标志位翻转
break;
default:
break;
}
UIF_TRANSFER = 0; //写0清空中断
}
if (UIF_BUS_RST) //设备模式USB总线复位中断
{
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK;
UEP1_CTRL = bUEP_AUTO_TOG | UEP_R_RES_ACK;
UEP2_CTRL = bUEP_AUTO_TOG | UEP_R_RES_ACK | UEP_T_RES_NAK;
USB_DEV_AD = 0x00;
UIF_SUSPEND = 0;
UIF_TRANSFER = 0;
UIF_BUS_RST = 0; //清中断标志
}
if (UIF_SUSPEND) //USB总线挂起/唤醒完成
{
UIF_SUSPEND = 0;
if ( USB_MIS_ST & bUMS_SUSPEND ) //挂起
{
//suspend
//TRACE( "zz" ); //睡眠状态
// while ( XBUS_AUX & bUART0_TX ); //等待发送完成
// SAFE_MOD = 0x55;
// SAFE_MOD = 0xAA;
// WAKE_CTRL = bWAK_BY_USB | bWAK_RXD0_LO; //USB或者RXD0有信号时可被唤醒
// PCON |= PD; //睡眠
// SAFE_MOD = 0x55;
// SAFE_MOD = 0xAA;
// WAKE_CTRL = 0x00;
if (!GET_GPIO_BIT(PIN_USB_POWER))
{
Ready = FALSE;
}
}
else
{
//resume
PCSleeped = FALSE;
}
}
else
{ //意外的中断,不可能发生的情况
USB_INT_FG = 0xFF; //清中断标志
// TRACE("UnknownInt N");
}
}