最近一直在做CY7C68013数据传输项目,目的是为了将FPGA开发板产生的随机数信号通过USB接口传至PC机,目前Bulkloop.c代码修改过了,fifo_wr.v也写好了,但是写入开发板后,EZ-USB的pipe不对,因为我设置的是EP2 IN 但是界面显示EP2 OUT 不知道哪里代码哪里修改错了,希望大佬指点。附上Bulkloop.c的代码和fifo_wr.v的代码。
- //-----------------------------------------------------------------------------
- // File: bulkloop.c
- // Contents: Hooks required to implement USB peripheral function.
- //
- // $Archive: /USB/Examples/FX2LP/bulkloop/bulkloop.c $
- //
- //
- //-----------------------------------------------------------------------------
- // Copyright (c) 2011, Cypress Semiconductor Corporation All rights reserved
- //-----------------------------------------------------------------------------
- #pragma NOIV // Do not generate interrupt vectors
- #include "..\inc\fx2.h"
- #include "..\inc\fx2regs.h"
- #include "..\inc\syncdly.h" // SYNCDELAY macro
- extern BOOL GotSUD; // Received setup data flag
- extern BOOL Sleep;
- extern BOOL Rwuen;
- extern BOOL Selfpwr;
- BYTE Configuration; // Current configuration
- BYTE AlternateSetting; // Alternate settings
- #define VR_NAKALL_ON 0xD0
- #define VR_NAKALL_OFF 0xD1
- //-----------------------------------------------------------------------------
- // Task Dispatcher hooks
- // The following hooks are called by the task dispatcher.
- //-----------------------------------------------------------------------------
- void TD_Init(void) // Called once at startup
- {
- // set the CPU clock to 48MHz, Default 12MHz(Page 333)
- //CPUCS = 0x02; //12MHZ CLKOUT ENALBE
- //CPUCS = 0x0a; //24MHZ CLKOUT ENALBE
- CPUCS = 0x12; //48MHZ CLKOUT ENALBE,时钟不反向,CLKOUT PIN驱动,有时钟输出;
- SYNCDELAY;
-
- //Interface Configure(Page 334)
- IFCONFIG =0x03; //选择为外部时钟,且时钟频率为30MHz,且为同步slaveFIFO模式,输入IFCLK(5~48MHz)(0000_0011)
- //IFCONFIG =0x0B;//选择为外部时钟,且为异步slaveFIFO模式,不需要IFCLK
- SYNCDELAY;
-
- //Configure REVCTL for Chip Revision Control(Page 344)
- REVCTL = 0x03; //Cypress highly recommends setting both bits to 1
- SYNCDELAY;
- Rwuen = TRUE; // Enable remote-wakeup
- // Registers which require a synchronization delay, see section 15.14
- // FIFORESET FIFOPINPOLAR
- // INPKTEND OUTPKTEND
- // EPxBCH:L REVCTL
- // GPIFTCB3 GPIFTCB2
- // GPIFTCB1 GPIFTCB0
- // EPxFIFOPFH:L EPxAUTOINLENH:L
- // EPxFIFOCFG EPxGPIF**SEL
- // PINFLAGSxx EPxFIFOIRQ
- // EPxFIFOIE GPIFIRQ
- // GPIFIE GPIFADRH:L
- // UDMACRCH:L EPxGPIFTRIG
- // GPIFTRIG
-
- // Note: The pre-REVE EPxGPIFTCH/L register are affected, as well...
- // ...these have been replaced by GPIFTC[B3:B0] registers
- // default: all endpoints have their VALID bit set
- // default: TYPE1 = 1 and TYPE0 = 0 --> BULK
- // default: EP2 and EP4 DIR bits are 0 (OUT direction)
- // default: EP6 and EP8 DIR bits are 1 (IN direction)
- // default: EP2, EP4, EP6, and EP8 are double buffered
-
- // we are just using the default values, yes this is not necessary...
- EP1OUTCFG = 0xA0;
- EP1INCFG = 0xA0;
- SYNCDELAY; // see TRM section 15.14
- EP2CFG = 0xE0;
- SYNCDELAY;
- EP4CFG = 0x60; // disabled...
- SYNCDELAY;
- EP6CFG = 0x60; // disabled...
- SYNCDELAY;
- EP8CFG = 0x60; // disabled...
- //=========================大大的分割线=================================//
- //复位FIFO,先复位端点,再清空端点(Page 340)
- SYNCDELAY;
- FIFORESET = 0x80;// activate NAK-ALL to avoid race conditions
- SYNCDELAY;
- FIFORESET = 0x02;// reset, FIFO 2
- SYNCDELAY;
- FIFORESET = 0x04;// reset, FIFO 4
- SYNCDELAY;
- FIFORESET = 0x06;// reset, FIFO 6
- SYNCDELAY;
- FIFORESET = 0x08;// reset, FIFO 8
- SYNCDELAY;
- FIFORESET = 0x00;// deactivate NAK-AL
- SYNCDELAY;
- //Configure the EPxFIFOCFG(Page 349)
- EP2FIFOCFG = 0x08; // autoin, 8 Bit Wide,0000_1000 自动使能IN
- // EP2FIFOCFG = 0x09; // autoin, 16 Bit Wide
- SYNCDELAY;
- EP4FIFOCFG = 0x00; // no-autoOUT, bytewide
- SYNCDELAY;
- EP6FIFOCFG = 0x00; // no-autoOUT, bytewide
- SYNCDELAY;
- EP8FIFOCFG = 0x00; // no-autoOUT, bytewide
- SYNCDELAY;
-
- //--------------------------------------------------------
-
- //Configure PIN Polarity
- PORTACFG = 0x40; //IFCOG[1:0] = 11(Slave FIFO Mode), Set PORTACFG[6] to USE PA7-SLCS (Page 275) 0100_0000
- SYNCDELAY;
- FIFOPINPOLAR = 0x04; //BIT[5:0] = {PKTEND, SLOE, SLRD, SLWR, EMPTY, FULL}--0000_0100
- //Set SLWR High Valid; PKTEND,SLOE,SLRD EMPTY, FULL Low Active(Page 342)
- SYNCDELAY;
-
-
- //--------------------------------------------------------
- //设置为Autoin时的自动传输包大小(Page 239)
- SYNCDELAY;
- EP2AUTOINLENH = 0x02; // EZ-USB automatically commits data in 512-byte chunks 0000_0010
- // EP2AUTOINLENH = 0x04; // EZ-USB automatically commits data in 1024-byte chunks
- SYNCDELAY;
- EP2AUTOINLENL = 0x00;
- SYNCDELAY;
- //Set Autopointer, enable dual autopointer(Page 215-216)
- AUTOPTRSETUP = 0x01;
- //FLAGA - User-Programmable Level; FLAGB - FIFO Full, FLAGC - FIFO Empty: (L: Valid)(Page 223)
- PINFLAGSAB = 0x00;//0x8a;
- SYNCDELAY;
- PINFLAGSCD = 0x00;//0x08;
- SYNCDELAY;
- //===========================大大的分割线===============================//
- /*
- // out endpoints do not come up armed
-
- // since the defaults are double buffered we must write dummy byte counts twice
- SYNCDELAY;
- EP2BCL = 0x80; // arm EP2OUT by writing byte count w/skip.
- SYNCDELAY;
- EP2BCL = 0x80;
- SYNCDELAY;
- EP4BCL = 0x80; // arm EP4OUT by writing byte count w/skip.
- SYNCDELAY;
- EP4BCL = 0x80;
- */
- // enable dual autopointer feature
- //AUTOPTRSETUP |= 0x01;
- }
- void TD_Poll(void) // Called repeatedly while the device is idle
- {
-
- }
- BOOL TD_Suspend(void) // Called before the device goes into suspend mode
- {
- return(TRUE);
- }
- BOOL TD_Resume(void) // Called after the device resumes
- {
- return(TRUE);
- }
- //-----------------------------------------------------------------------------
- // Device Request hooks
- // The following hooks are called by the end point 0 device request parser.
- //-----------------------------------------------------------------------------
- BOOL DR_GetDescriptor(void)
- {
- return(TRUE);
- }
- BOOL DR_SetConfiguration(void) // Called when a Set Configuration command is received
- {
- Configuration = SETUPDAT[2];
- return(TRUE); // Handled by user code
- }
- BOOL DR_GetConfiguration(void) // Called when a Get Configuration command is received
- {
- EP0BUF[0] = Configuration;
- EP0BCH = 0;
- EP0BCL = 1;
- return(TRUE); // Handled by user code
- }
- BOOL DR_SetInterface(void) // Called when a Set Interface command is received
- {
- AlternateSetting = SETUPDAT[2];
- return(TRUE); // Handled by user code
- }
- BOOL DR_GetInterface(void) // Called when a Set Interface command is received
- {
- EP0BUF[0] = AlternateSetting;
- EP0BCH = 0;
- EP0BCL = 1;
- return(TRUE); // Handled by user code
- }
- BOOL DR_GetStatus(void)
- {
- return(TRUE);
- }
- BOOL DR_ClearFeature(void)
- {
- return(TRUE);
- }
- BOOL DR_SetFeature(void)
- {
- return(TRUE);
- }
- BOOL DR_VendorCmnd(void)
- {
- BYTE tmp;
-
- switch (SETUPDAT[1])
- {
- case VR_NAKALL_ON:
- tmp = FIFORESET;
- tmp |= bmNAKALL;
- SYNCDELAY;
- FIFORESET = tmp;
- break;
- case VR_NAKALL_OFF:
- tmp = FIFORESET;
- tmp &= ~bmNAKALL;
- SYNCDELAY;
- FIFORESET = tmp;
- break;
- default:
- return(TRUE);
- }
- return(FALSE);
- }
- //-----------------------------------------------------------------------------
- // USB Interrupt Handlers
- // The following functions are called by the USB interrupt jump table.
- //-----------------------------------------------------------------------------
- // Setup Data Available Interrupt Handler
- void ISR_Sudav(void) interrupt 0
- {
- GotSUD = TRUE; // Set flag
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmSUDAV; // Clear SUDAV IRQ
- }
- // Setup Token Interrupt Handler
- void ISR_Sutok(void) interrupt 0
- {
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmSUTOK; // Clear SUTOK IRQ
- }
- void ISR_Sof(void) interrupt 0
- {
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmSOF; // Clear SOF IRQ
- }
- void ISR_Ures(void) interrupt 0
- {
- // whenever we get a USB reset, we should revert to full speed mode
- pConfigDscr = pFullSpeedConfigDscr;
- ((CONFIGDSCR xdata *) pConfigDscr)->type = CONFIG_DSCR;
- pOtherConfigDscr = pHighSpeedConfigDscr;
- ((CONFIGDSCR xdata *) pOtherConfigDscr)->type = OTHERSPEED_DSCR;
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmURES; // Clear URES IRQ
- }
- void ISR_Susp(void) interrupt 0
- {
- Sleep = TRUE;
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmSUSP;
- }
- void ISR_Highspeed(void) interrupt 0
- {
- if (EZUSB_HIGHSPEED())
- {
- pConfigDscr = pHighSpeedConfigDscr;
- ((CONFIGDSCR xdata *) pConfigDscr)->type = CONFIG_DSCR;
- pOtherConfigDscr = pFullSpeedConfigDscr;
- ((CONFIGDSCR xdata *) pOtherConfigDscr)->type = OTHERSPEED_DSCR;
- }
- EZUSB_IRQ_CLEAR();
- USBIRQ = bmHSGRANT;
- }
- void ISR_Ep0ack(void) interrupt 0
- {
- }
- void ISR_Stub(void) interrupt 0
- {
- }
- void ISR_Ep0in(void) interrupt 0
- {
- }
- void ISR_Ep0out(void) interrupt 0
- {
- }
- void ISR_Ep1in(void) interrupt 0
- {
- }
- void ISR_Ep1out(void) interrupt 0
- {
- }
- void ISR_Ep2inout(void) interrupt 0
- {
- }
- void ISR_Ep4inout(void) interrupt 0
- {
- }
- void ISR_Ep6inout(void) interrupt 0
- {
- }
- void ISR_Ep8inout(void) interrupt 0
- {
- }
- void ISR_Ibn(void) interrupt 0
- {
- }
- void ISR_Ep0pingnak(void) interrupt 0
- {
- }
- void ISR_Ep1pingnak(void) interrupt 0
- {
- }
- void ISR_Ep2pingnak(void) interrupt 0
- {
- }
- void ISR_Ep4pingnak(void) interrupt 0
- {
- }
- void ISR_Ep6pingnak(void) interrupt 0
- {
- }
- void ISR_Ep8pingnak(void) interrupt 0
- {
- }
- void ISR_Errorlimit(void) interrupt 0
- {
- }
- void ISR_Ep2piderror(void) interrupt 0
- {
- }
- void ISR_Ep4piderror(void) interrupt 0
- {
- }
- void ISR_Ep6piderror(void) interrupt 0
- {
- }
- void ISR_Ep8piderror(void) interrupt 0
- {
- }
- void ISR_Ep2pflag(void) interrupt 0
- {
- }
- void ISR_Ep4pflag(void) interrupt 0
- {
- }
- void ISR_Ep6pflag(void) interrupt 0
- {
- }
- void ISR_Ep8pflag(void) interrupt 0
- {
- }
- void ISR_Ep2eflag(void) interrupt 0
- {
- }
- void ISR_Ep4eflag(void) interrupt 0
- {
- }
- void ISR_Ep6eflag(void) interrupt 0
- {
- }
- void ISR_Ep8eflag(void) interrupt 0
- {
- }
- void ISR_Ep2fflag(void) interrupt 0
- {
- }
- void ISR_Ep4fflag(void) interrupt 0
- {
- }
- void ISR_Ep6fflag(void) interrupt 0
- {
- }
- void ISR_Ep8fflag(void) interrupt 0
- {
- }
- void ISR_GpifComplete(void) interrupt 0
- {
- }
- void ISR_GpifWaveform(void) interrupt 0
- {
- }
Verilog--fifo_wr.v
- module fifo_wr(
- clk ,
- rst_n ,
- //Other signal
- //input
- fifo_full ,//flag
- load ,
- // fifo_empty ,//flag
- //output
- fifo_wr ,//fifo_wr signal
- fifo_data ,//fifo write data
- fifoadr //select fifo
- );
- //参数定义
- parameter DATA_W = 8;
- parameter STATE_W = 3;
- parameter IDLE = 0;
- parameter S1 = 1;
- parameter S2 = 2;
- parameter S3 = 3;
- parameter S4 = 4;
- //输入信号定义
- input clk ;
- input rst_n ;
- input fifo_full ;
- input load ;
- //input fifo_empty ;
- //输出信号定义
- output fifo_wr ;
- output[DATA_W-1:0] fifo_data ;
- output[2-1:0] fifoadr ;
- //输出信号reg定义
- reg fifo_wr ;
- reg [DATA_W-1:0] fifo_data ;
- reg [2-1:0] fifoadr ;
- //中间信号定义
- reg clkin ;
- reg [STATE_W-1:0] state_c ;
- reg [STATE_W-1:0] state_n ;
- wire start_s3 ;
- wire end_s4 ;
- wire [DATA_W-1:0] rand_num;
- //First div clk by 2
- always @(posedge clk or negedge rst_n)begin
- if(rst_n==1'b0)begin
- clkin <= 'b1;
- end
- else begin
- clkin<= ~clkin;
- end
- end
-
- //三段式状态机
- //第一个进程,同步时序always模块,格式化描述次态寄存器迁移到现态寄存器(不需更改)
- always@(posedge clkin or negedge rst_n)begin
- if(!rst_n)begin
- state_c <= IDLE;
- end
- else begin
- state_c <= state_n;
- end
- end
- //第二个进程,组合逻辑always模块,描述状态转移条件判断
- always@(*)begin
- case(state_c)
- IDLE:begin
- state_n = S1;
- end
- S1:begin
- state_n = S2 ;
- end
- S2:begin
- if(start_s3)begin
- state_n = S3;
- end
- else begin
- state_n = state_c;
- end
- end
- S3:begin
- state_n = S4;
- end
- S4:begin
- if(end_s4)begin
- state_n = S2;
- end
- else begin
- state_n = IDLE;
- end
- end
- default:begin
- state_n = IDLE;
- end
- endcase
- end
- //assign start_s1 = state_c==IDLE && ;
- assign start_s3 = state_c==S2 && fifo_full;
- assign end_s4 = state_c==S3 && fifo_full;
- //assign end_s2 = state_c==S2 && ;
-
- //第三个进程,同步时序always模块,格式化描述寄存器输出(可有多个输出)
-
- //fifoadr 此处应该考虑写状态fifoadr和非写状态的fifoadr是不一样的
- always @(posedge clkin or negedge rst_n)begin
- if(rst_n==1'b0 )begin
- fifoadr <= 2'b 10;
- end
- else begin
- fifoadr <= 2'b 10;//10指的是EP6
- end
- //else if(state_c==S1)begin
- // fifoadr <= 2'b00;//目前还不知道具体选哪个
- // end
- end
- //fifo_wr
- always @(posedge clkin or negedge rst_n)begin
- if(!rst_n)begin
- fifo_wr <=1'b0; //初始化
- end
- else if(state_c==S3)begin
- fifo_wr <= 1'b1;
- end
- else begin
- fifo_wr <= 1'b0;
- end
- end
-
-
- //fifo_data
- always @(posedge clkin or negedge rst_n)begin
- if(rst_n==1'b0)begin
- fifo_data <= 'hff;
- end
- else if(state_c == S3)begin
- fifo_data <= rand_num ;
- end
- end
-
- //例化RanGen
- RanGen uut_RanGen(
- .clk (clk ),
- .rst_n (rst_n ),
- .load (load ),
- .rand_num (rand_num)
-
-
-
- );
- endmodule
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