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main.c
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/********************************** (C) COPYRIGHT *******************************
* File Name : CDC.C
* Author : WCH
* Version : V1.0
* Date : 2017/03/01
* Description : CH554 as CDC device to serial port, select serial port 1
*******************************************************************************/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <ch554.h>
#include <ch554_usb.h>
#include <debug.h>
__xdata __at (0x0000) uint8_t Ep0Buffer[DEFAULT_ENDP0_SIZE]; // Endpoint 0 OUT & IN buffer, must be an even address
__xdata __at (0x0040) uint8_t Ep1Buffer[DEFAULT_ENDP1_SIZE]; //Endpoint 1 upload buffer
__xdata __at (0x0080) uint8_t Ep2Buffer[2*MAX_PACKET_SIZE]; //Endpoint 2 IN & OUT buffer, must be an even address
uint16_t SetupLen;
uint8_t SetupReq,Count,UsbConfig;
const uint8_t * pDescr; //USB configuration flag
USB_SETUP_REQ SetupReqBuf; //Temporary Setup package
#define UsbSetupBuf ((PUSB_SETUP_REQ)Ep0Buffer)
#define SET_LINE_CODING 0X20 // Configures DTE rate, stop-bits, parity, and number-of-character
#define GET_LINE_CODING 0X21 // This request allows the host to find out the currently configured line coding.
#define SET_CONTROL_LINE_STATE 0X22 // This request generates RS-232/V.24 style control signals.
/*设备描述符*/
__code uint8_t DevDesc[] = {0x12,0x01,0x10,0x01,0x02,0x00,0x00,DEFAULT_ENDP0_SIZE,
0x86,0x1a,0x22,0x57,0x00,0x01,0x01,0x02,
0x03,0x01
};
__code uint8_t CfgDesc[] ={
0x09,0x02,0x43,0x00,0x02,0x01,0x00,0xa0,0x32, //Configuration descriptor (two interfaces)
// The following is the interface 0 (CDC interface) descriptor
0x09,0x04,0x00,0x00,0x01,0x02,0x02,0x01,0x00, // CDC interface descriptor (one endpoint)
//The following is the function descriptor
0x05,0x24,0x00,0x10,0x01, //Function descriptor (header)
0x05,0x24,0x01,0x00,0x00, //Management descriptor (no data interface) 03 01
0x04,0x24,0x02,0x02, //stand by,Set_Line_Coding、Set_Control_Line_State、Get_Line_Coding、Serial_State
0x05,0x24,0x06,0x00,0x01, //CDC interface numbered 0; data interface numbered 1
0x07,0x05,0x81,0x03,0x08,0x00,0xFF, //Interrupt upload endpoint descriptor
//The following is the interface 1 (data interface) descriptor
0x09,0x04,0x01,0x00,0x02,0x0a,0x00,0x00,0x00, //Data interface descriptor
0x07,0x05,0x02,0x02,0x40,0x00,0x00, //Endpoint descriptor
0x07,0x05,0x82,0x02,0x40,0x00,0x00, //Endpoint descriptor
};
/*字符串描述符*/
unsigned char __code LangDes[]={0x04,0x03,0x09,0x04}; //Language descriptor
unsigned char __code SerDes[]={ //Serial number string descriptor
0x14,0x03,
0x32,0x00,0x30,0x00,0x31,0x00,0x37,0x00,0x2D,0x00,
0x32,0x00,0x2D,0x00,
0x32,0x00,0x35,0x00
};
unsigned char __code Prod_Des[]={ //Product string descriptor
0x14,0x03,
0x43,0x00,0x48,0x00,0x35,0x00,0x35,0x00,0x34,0x00,0x5F,0x00,
0x43,0x00,0x44,0x00,0x43,0x00,
};
unsigned char __code Manuf_Des[]={
0x0A,0x03,
0x5F,0x6c,0xCF,0x82,0x81,0x6c,0x52,0x60,
};
//cdc参数
__xdata uint8_t LineCoding[7]={0x00,0xe1,0x00,0x00,0x00,0x00,0x08}; //The initial baud rate is 57600, 1 stop bit, no parity, 8 data bits.
#define UART_REV_LEN 64 //Serial receive buffer size
__idata uint8_t Receive_Uart_Buf[UART_REV_LEN]; //Serial receive buffer
volatile __idata uint8_t Uart_Input_Point = 0; //Circular buffer write pointer, bus reset needs to be initialized to 0
volatile __idata uint8_t Uart_Output_Point = 0; //Take pointer out of circular buffer, bus reset needs to be initialized to 0
volatile __idata uint8_t UartByteCount = 0; //Number of bytes remaining in the current buffer
volatile __idata uint8_t USBByteCount = 0; //Represents the data received by the USB endpoint
volatile __idata uint8_t USBBufOutPoint = 0; //Fetch data pointer
volatile __idata uint8_t UpPoint2_Busy = 0; //Whether the upload endpoint is busy
/*******************************************************************************
* Function Name : USBDeviceCfg()
* Description : USB device mode configuration
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USBDeviceCfg()
{
USB_CTRL = 0x00; //Clear USB control register
USB_CTRL &= ~bUC_HOST_MODE; //This bit selects the device mode
USB_CTRL |= bUC_DEV_PU_EN | bUC_INT_BUSY | bUC_DMA_EN; //USB device and internal pull-up enable, automatically return to NAK before interrupt flag is cleared
USB_DEV_AD = 0x00; //Device address initialization
// USB_CTRL |= bUC_LOW_SPEED;
// UDEV_CTRL |= bUD_LOW_SPEED; //Select low speed 1.5M mode
USB_CTRL &= ~bUC_LOW_SPEED;
UDEV_CTRL &= ~bUD_LOW_SPEED; //Select full speed 12M mode, the default mode
UDEV_CTRL = bUD_PD_DIS; // Disable DP / DM pull-down resistor
UDEV_CTRL |= bUD_PORT_EN; //Enable physical port
}
/*******************************************************************************
* Function Name : USBDeviceIntCfg()
* Description : USB device mode interrupt initialization
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USBDeviceIntCfg()
{
USB_INT_EN |= bUIE_SUSPEND; //Enable device suspend interrupt
USB_INT_EN |= bUIE_TRANSFER; //Enable USB transfer completion interrupt
USB_INT_EN |= bUIE_BUS_RST; //Enable device mode USB bus reset interrupt
USB_INT_FG |= 0x1F; //Clear interrupt flag
IE_USB = 1; //Enable USB interrupt
EA = 1; //Allow microcontroller interrupt
}
/*******************************************************************************
* Function Name : USBDeviceEndPointCfg()
* Description : USB device mode endpoint configuration, simulation compatible HID device, in addition to endpoint 0 control transmission, also includes endpoint 2 batch upload
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USBDeviceEndPointCfg()
{
// TODO: Is casting the right thing here? What about endianness?
UEP1_DMA = (uint16_t) Ep1Buffer; //Endpoint 1 sends data transfer address
UEP2_DMA = (uint16_t) Ep2Buffer; //Endpoint 2 IN data transfer address
UEP2_3_MOD = 0xCC; //Endpoint 2/3 single buffer transceiver enable
UEP2_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK | UEP_R_RES_ACK; //Endpoint 2 automatically flips the synchronization flag, IN transaction returns NAK, OUT returns ACK
UEP1_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK; //Endpoint 1 automatically flips the synchronization flag, IN transaction returns NAK
UEP0_DMA = (uint16_t) Ep0Buffer; //Endpoint 0 data transfer address
UEP4_1_MOD = 0X40; //Endpoint 1 upload buffer; endpoint 0 single 64-byte send and receive buffer
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK; //Manual flip, OUT transaction returns ACK, IN transaction returns NAK
}
/*******************************************************************************
* Function Name : Config_Uart1(uint8_t *cfg_uart)
* Description : Configure serial port 1 parameters
* Input : Serial port configuration parameters Four bit baud rate, stop bit, parity, data bit
* Output : None
* Return : None
*******************************************************************************/
void Config_Uart1(uint8_t *cfg_uart)
{
uint32_t uart1_buad = 0;
*((uint8_t *)&uart1_buad) = cfg_uart[0];
*((uint8_t *)&uart1_buad+1) = cfg_uart[1];
*((uint8_t *)&uart1_buad+2) = cfg_uart[2];
*((uint8_t *)&uart1_buad+3) = cfg_uart[3];
SBAUD1 = 256 - FREQ_SYS/16/uart1_buad; // SBAUD1 = 256 - Fsys / 16 / baud rate
IE_UART1 = 1;
}
/*******************************************************************************
* Function Name : DeviceInterrupt()
* Description : CH559USB interrupt processing function
*******************************************************************************/
void DeviceInterrupt(void) __interrupt (INT_NO_USB) //USB interrupt service routine, using register set 1
{
uint16_t len;
if(UIF_TRANSFER) //USB transfer complete flag
{
switch (USB_INT_ST & (MASK_UIS_TOKEN | MASK_UIS_ENDP))
{
case UIS_TOKEN_IN | 1: //endpoint 1# 端点中断上传
UEP1_T_LEN = 0;
UEP1_CTRL = UEP1_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_NAK; //默认应答NAK
break;
case UIS_TOKEN_IN | 2: //endpoint 2# 端点批量上传
{
UEP2_T_LEN = 0; //预使用发送长度一定要清空
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_NAK; //默认应答NAK
UpPoint2_Busy = 0; //清除忙标志
}
break;
case UIS_TOKEN_OUT | 2: //endpoint 3# 端点批量下传
if ( U_TOG_OK ) // 不同步的数据包将丢弃
{
USBByteCount = USB_RX_LEN; // Grads length of recieved data
USBBufOutPoint = 0; //Get data pointer reset
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_R_RES | UEP_R_RES_NAK; //NAK after receiving a packet of data, the main function finishes processing, and the main function modifies the response mode
}
break;
case UIS_TOKEN_SETUP | 0: //SETUP事务
len = USB_RX_LEN;
if(len == (sizeof(USB_SETUP_REQ)))
{
SetupLen = ((uint16_t)UsbSetupBuf->wLengthH<<8) | (UsbSetupBuf->wLengthL);
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 )//非标准请求
{
switch( SetupReq )
{
case GET_LINE_CODING: //0x21 currently configured
pDescr = LineCoding;
len = sizeof(LineCoding);
len = SetupLen >= DEFAULT_ENDP0_SIZE ? DEFAULT_ENDP0_SIZE : SetupLen; // 本次传输长度
memcpy(Ep0Buffer,pDescr,len);
SetupLen -= len;
pDescr += len;
break;
case SET_CONTROL_LINE_STATE: //0x22 generates RS-232/V.24 style control signals
break;
case SET_LINE_CODING: //0x20 Configure
break;
default:
len = 0xFF; /*Command not supported*/
break;
}
}
else //Standard request
{
switch(SetupReq) //Request code
{
case USB_GET_DESCRIPTOR:
switch(UsbSetupBuf->wValueH)
{
case 1: //设备描述符
pDescr = DevDesc; //把设备描述符送到要发送的缓冲区
len = sizeof(DevDesc);
break;
case 2: //配置描述符
pDescr = CfgDesc; //把设备描述符送到要发送的缓冲区
len = sizeof(CfgDesc);
break;
case 3:
if(UsbSetupBuf->wValueL == 0)
{
pDescr = LangDes;
len = sizeof(LangDes);
}
else if(UsbSetupBuf->wValueL == 1)
{
pDescr = Manuf_Des;
len = sizeof(Manuf_Des);
}
else if(UsbSetupBuf->wValueL == 2)
{
pDescr = Prod_Des;
len = sizeof(Prod_Des);
}
else
{
pDescr = SerDes;
len = sizeof(SerDes);
}
break;
default:
len = 0xff; //Unsupported command or error
break;
}
if ( SetupLen > len )
{
SetupLen = len; //Limit total length
}
len = SetupLen >= DEFAULT_ENDP0_SIZE ? DEFAULT_ENDP0_SIZE : SetupLen; //This transmission length
memcpy(Ep0Buffer,pDescr,len); //Load upload data
SetupLen -= len;
pDescr += len;
break;
case USB_SET_ADDRESS:
SetupLen = UsbSetupBuf->wValueL; //Temporary storage of USB device address
break;
case USB_GET_CONFIGURATION:
Ep0Buffer[0] = UsbConfig;
if ( SetupLen >= 1 )
{
len = 1;
}
break;
case USB_SET_CONFIGURATION:
UsbConfig = UsbSetupBuf->wValueL;
break;
case USB_GET_INTERFACE:
break;
case USB_CLEAR_FEATURE: //Clear Feature
if( ( UsbSetupBuf->bRequestType & 0x1F ) == USB_REQ_RECIP_DEVICE ) /* Remove device */
{
if( ( ( ( uint16_t )UsbSetupBuf->wValueH << 8 ) | UsbSetupBuf->wValueL ) == 0x01 )
{
if( CfgDesc[ 7 ] & 0x20 )
{
/* 唤醒 */
}
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 )// 端点
{
switch( UsbSetupBuf->wIndexL )
{
case 0x83:
UEP3_CTRL = UEP3_CTRL & ~ ( bUEP_T_TOG | MASK_UEP_T_RES ) | UEP_T_RES_NAK;
break;
case 0x03:
UEP3_CTRL = UEP3_CTRL & ~ ( bUEP_R_TOG | MASK_UEP_R_RES ) | UEP_R_RES_ACK;
break;
case 0x82:
UEP2_CTRL = UEP2_CTRL & ~ ( bUEP_T_TOG | MASK_UEP_T_RES ) | UEP_T_RES_NAK;
break;
case 0x02:
UEP2_CTRL = UEP2_CTRL & ~ ( bUEP_R_TOG | MASK_UEP_R_RES ) | UEP_R_RES_ACK;
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;
}
}
else
{
len = 0xFF; // 不是端点不支持
}
break;
case USB_SET_FEATURE: /* Set Feature */
if( ( UsbSetupBuf->bRequestType & 0x1F ) == USB_REQ_RECIP_DEVICE ) /* 设置设备 */
{
if( ( ( ( uint16_t )UsbSetupBuf->wValueH << 8 ) | UsbSetupBuf->wValueL ) == 0x01 )
{
if( CfgDesc[ 7 ] & 0x20 )
{
/* 休眠 */
#ifdef DE_PRINTF
printf( "suspend\n" ); //睡眠状态
#endif
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 | bWAK_RXD1_LO; //USB或者RXD0/1有信号时可被唤醒
PCON |= PD; //睡眠
SAFE_MOD = 0x55;
SAFE_MOD = 0xAA;
WAKE_CTRL = 0x00;
}
else
{
len = 0xFF; /* 操作失败 */
}
}
else
{
len = 0xFF; /* 操作失败 */
}
}
else if( ( UsbSetupBuf->bRequestType & 0x1F ) == USB_REQ_RECIP_ENDP ) /* 设置端点 */
{
if( ( ( ( uint16_t )UsbSetupBuf->wValueH << 8 ) | UsbSetupBuf->wValueL ) == 0x00 )
{
switch( ( ( uint16_t )UsbSetupBuf->wIndexH << 8 ) | UsbSetupBuf->wIndexL )
{
case 0x83:
UEP3_CTRL = UEP3_CTRL & (~bUEP_T_TOG) | UEP_T_RES_STALL;/* 设置端点3 IN STALL */
break;
case 0x03:
UEP3_CTRL = UEP3_CTRL & (~bUEP_R_TOG) | UEP_R_RES_STALL;/* 设置端点3 OUT Stall */
break;
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;
case 0x01:
UEP1_CTRL = UEP1_CTRL & (~bUEP_R_TOG) | UEP_R_RES_STALL;/* 设置端点1 OUT Stall */
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:
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
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
if(SetupReq ==SET_LINE_CODING) //设置串口属性
{
if( U_TOG_OK )
{
memcpy(LineCoding,UsbSetupBuf,USB_RX_LEN);
Config_Uart1(LineCoding);
UEP0_T_LEN = 0;
UEP0_CTRL |= UEP_R_RES_ACK | UEP_T_RES_ACK; // 准备上传0包
}
}
else
{
UEP0_T_LEN = 0;
UEP0_CTRL |= UEP_R_RES_ACK | UEP_T_RES_NAK; //状态阶段，对IN响应NAK
}
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
{
#ifdef DE_PRINTF
printf( "reset\n" ); //睡眠状态
#endif
UEP0_CTRL = UEP_R_RES_ACK | UEP_T_RES_NAK;
UEP1_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK;
UEP2_CTRL = bUEP_AUTO_TOG | UEP_T_RES_NAK | UEP_R_RES_ACK;
USB_DEV_AD = 0x00;
UIF_SUSPEND = 0;
UIF_TRANSFER = 0;
UIF_BUS_RST = 0; //清中断标志
Uart_Input_Point = 0; //循环缓冲区输入指针
Uart_Output_Point = 0; //循环缓冲区读出指针
UartByteCount = 0; //当前缓冲区剩余待取字节数
USBByteCount = 0; //USB端点收到的长度
UsbConfig = 0; //清除配置值
UpPoint2_Busy = 0;
}
if (UIF_SUSPEND) //USB总线挂起/唤醒完成
{
UIF_SUSPEND = 0;
if ( USB_MIS_ST & bUMS_SUSPEND ) //挂起
{
#ifdef DE_PRINTF
printf( "suspend\n" ); //睡眠状态
#endif
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 | bWAK_RXD1_LO; //USB或者RXD0/1有信号时可被唤醒
PCON |= PD; //睡眠
SAFE_MOD = 0x55;
SAFE_MOD = 0xAA;
WAKE_CTRL = 0x00;
}
}
else { //意外的中断,不可能发生的情况
USB_INT_FG = 0xFF; //清中断标志
}
}
/*******************************************************************************
* Function Name : Uart1_ISR()
* Description : Serial port receiving interrupt function to realize circular buffer receiving
*******************************************************************************/
void Uart1_ISR(void) __interrupt (INT_NO_UART1)
{
if(U1RI) //收到数据
{
Receive_Uart_Buf[Uart_Input_Point++] = SBUF1;
UartByteCount++; //Number of bytes remaining in the current buffer
if(Uart_Input_Point>=UART_REV_LEN)
Uart_Input_Point = 0; //Write pointer
U1RI =0;
}
}
//主函数
main()
{
uint8_t length;
uint8_t Uart_Timeout = 0;
uint8_t recievedData[MAX_PACKET_SIZE] ="";
uint8_t dataRecievedCopFlag = 0 ;
char respOk[] = "OK";
CfgFsys( ); // CH559 clock selection configuration
mDelaymS(5); // Modify the main frequency and wait for the internal crystal to stabilize, which must be added
mInitSTDIO( ); // Serial port 0, can be used for debugging
UART1Setup( ); // For CDC
#ifdef DE_PRINTF
printf("start ...\n");
#endif
USBDeviceCfg();
USBDeviceEndPointCfg(); // Endpoint configuration
USBDeviceIntCfg(); //Interrupt initialization
UEP0_T_LEN = 0;
UEP1_T_LEN = 0; //Pre-use send length must be cleared
UEP2_T_LEN = 0; //Pre-use send length must be cleared
while(1)
{
if(UsbConfig)
{
if(USBByteCount) // USB receiving endpoint has data
{
CH554UART1SendByte(Ep2Buffer[USBBufOutPoint++]);
recievedData[USBBufOutPoint] = Ep2Buffer[USBBufOutPoint];
USBByteCount--;
if(USBByteCount==0)
#ifdef DEBUG
dataRecievedCopFlag = 1;
#endif
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_R_RES | UEP_R_RES_ACK;
}
if(UartByteCount)
Uart_Timeout++;
if(!UpPoint2_Busy) // The endpoint is not busy (the first packet of data after idle, only used to trigger upload)
{
length = UartByteCount;
if(length>0)
{
if(length>39 || Uart_Timeout>100)
{
Uart_Timeout = 0;
if(Uart_Output_Point+length>UART_REV_LEN)
length = UART_REV_LEN-Uart_Output_Point;
UartByteCount -= length;
// write upload endpoint
memcpy(Ep2Buffer+MAX_PACKET_SIZE,&Receive_Uart_Buf[Uart_Output_Point],length);
Uart_Output_Point+=length;
if (Uart_Output_Point>=UART_REV_LEN)
Uart_Output_Point = 0;
UEP2_T_LEN = length; // Pre-use send length must be cleared
UEP2_CTRL = UEP2_CTRL & ~ MASK_UEP_T_RES | UEP_T_RES_ACK; // Answer ACK
UpPoint2_Busy = 1;
}
}
}
}
#ifdef DEBUG
if(dataRecievedCopFlag){
CH554UART1SendByte((char)'H');
if (strcmp((const signed char*)recievedData, (const signed char*)'OK\n') == 1)
{
CH554UART1SendByte((char)'P');
}
dataRecievedCopFlag = 0;
}
#endif // DEBUG
}
}