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Eyck Jentzsch
2019-06-28 23:08:36 +02:00
commit 4d8973e20b
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27
FreeRTOSv10.2.1/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/streamports/USB_CDC/Readme-Streamport.txt Normal file
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Tracealyzer Stream Port for USB CDC (STM32 example)
---------------------------------------------------
This directory contains a "stream port" for the Tracealyzer recorder library,
i.e., the specific code needed to use a particular interface for streaming a
Tracealyzer RTOS trace. The stream port is defined by a set of macros in
trcStreamingPort.h, found in the "include" directory.
This particular stream port targets USB CDC. This is an example for the STM32 USB
stack (from the STM32CubeMX code generation tool, v1.4.1) and has been tested on
a STM32F767ZI device on a Nucleo board. See this blog post:
http://percepio.com/2017/02/03/usb-trace-streaming-st-nucleo-f767zi-board/
However, it should be straight-forward to modify this for other USB stacks.
To use this stream port, make sure that include/trcStreamingPort.h is found
by the compiler (i.e., add this folder to your project's include paths) and
add all included source files to your build. Make sure no other versions of
trcStreamingPort.h are included by mistake!
Note that the USB stack not included, but assumed to exist in the project already.
See also http://percepio.com/2016/10/05/rtos-tracing.
Percepio AB
www.percepio.com

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FreeRTOSv10.2.1/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/streamports/USB_CDC/include/trcStreamingPort.h Normal file
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/*******************************************************************************
* Trace Recorder Library for Tracealyzer v4.1.5
* Percepio AB, www.percepio.com
*
* trcStreamingPort.h
*
* The interface definitions for trace streaming ("stream ports").
* This "stream port" sets up the recorder to use USB CDC as streaming channel.
* The example is for STM32 using STM32Cube.
*
* Terms of Use
* This file is part of the trace recorder library (RECORDER), which is the
* intellectual property of Percepio AB (PERCEPIO) and provided under a
* license as follows.
* The RECORDER may be used free of charge for the purpose of recording data
* intended for analysis in PERCEPIO products. It may not be used or modified
* for other purposes without explicit permission from PERCEPIO.
* You may distribute the RECORDER in its original source code form, assuming
* this text (terms of use, disclaimer, copyright notice) is unchanged. You are
* allowed to distribute the RECORDER with minor modifications intended for
* configuration or porting of the RECORDER, e.g., to allow using it on a
* specific processor, processor family or with a specific communication
* interface. Any such modifications should be documented directly below
* this comment block.
*
* Disclaimer
* The RECORDER is being delivered to you AS IS and PERCEPIO makes no warranty
* as to its use or performance. PERCEPIO does not and cannot warrant the
* performance or results you may obtain by using the RECORDER or documentation.
* PERCEPIO make no warranties, express or implied, as to noninfringement of
* third party rights, merchantability, or fitness for any particular purpose.
* In no event will PERCEPIO, its technology partners, or distributors be liable
* to you for any consequential, incidental or special damages, including any
* lost profits or lost savings, even if a representative of PERCEPIO has been
* advised of the possibility of such damages, or for any claim by any third
* party. Some jurisdictions do not allow the exclusion or limitation of
* incidental, consequential or special damages, or the exclusion of implied
* warranties or limitations on how long an implied warranty may last, so the
* above limitations may not apply to you.
*
* Tabs are used for indent in this file (1 tab = 4 spaces)
*
* Copyright Percepio AB, 2018.
* www.percepio.com
******************************************************************************/
#ifndef TRC_STREAMING_PORT_H
#define TRC_STREAMING_PORT_H
#ifdef __cplusplus
extern "C" {
#endif
/* Include files as needed, in this case it is files from STM32Cube FW_F7 V1.4.1 */
#include "usb_device.h"
#include "usbd_cdc.h"
#include "usbd_CDC_if.h"
#include "usb_device.h"
/* Tested on STM32 devices using Keil/CMSIS USB stack */
extern USBD_CDC_ItfTypeDef USBD_Interface_fops_FS;
uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len);
int32_t trcCDCReceive(void *data, uint32_t size, int32_t* NumBytes);
int32_t trcCDCTransmit(void* data, uint32_t size, int32_t * noOfBytesSent );
#define TRC_STREAM_PORT_INIT() \
MX_USB_DEVICE_Init(); \
TRC_STREAM_PORT_MALLOC(); /*Dynamic allocation or empty if static */
#define TRC_STREAM_PORT_READ_DATA(_ptrData, _size, _ptrBytesRead) trcCDCReceive(_ptrData, _size, _ptrBytesRead)
#define TRC_STREAM_PORT_WRITE_DATA(_ptrData, _size, _ptrBytesSent) trcCDCTransmit(_ptrData, _size, _ptrBytesSent)
#ifdef __cplusplus
}
#endif
#endif /* TRC_STREAMING_PORT_H */

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FreeRTOSv10.2.1/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/streamports/USB_CDC/trcStreamingPort.c Normal file
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#include "trcRecorder.h"
#if (TRC_USE_TRACEALYZER_RECORDER == 1)
#if (TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING)
#include "stdint.h"
/* Include files as needed, in this case it is files from STM32Cube FW_F7 V1.4.1 */
#include "usb_device.h"
#include "usbd_cdc.h"
#include "usbd_CDC_if.h"
#include "usb_device.h"
#define BUFSIZE 64
typedef struct{
uint32_t idx;
uint8_t data[BUFSIZE];
}recBuf;
/* Define size for the receive and transmit buffer over CDC */
#define APP_RX_DATA_SIZE 8
#define APP_TX_DATA_SIZE 64
/* Received Data over USB are stored in this buffer */
uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
/* Send Data over USB CDC are stored in this buffer */
uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
extern USBD_HandleTypeDef hUsbDeviceFS;
extern PCD_HandleTypeDef hpcd_USB_OTG_FS;
recBuf commandBuffer;
static int8_t CDC_Init_FS (void);
static int8_t CDC_DeInit_FS (void);
static int8_t CDC_Control_FS (uint8_t cmd, uint8_t* pbuf, uint16_t length);
static int8_t CDC_Receive_FS (uint8_t* pbuf, uint32_t *Len);
USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
{
CDC_Init_FS,
CDC_DeInit_FS,
CDC_Control_FS,
CDC_Receive_FS
};
/* Private functions ---------------------------------------------------------*/
/**
* @brief CDC_Init_FS
* Initializes the CDC media low layer over the FS USB IP
* @param None
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_Init_FS(void)
{
/* Set Application Buffers */
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
return (USBD_OK);
}
/**
* @brief CDC_DeInit_FS
* DeInitializes the CDC media low layer
* @param None
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_DeInit_FS(void)
{
return (USBD_OK);
}
/**
* @brief CDC_Control_FS
* Manage the CDC class requests
* @param cmd: Command code
* @param pbuf: Buffer containing command data (request parameters)
* @param length: Number of data to be sent (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_Control_FS (uint8_t cmd, uint8_t* pbuf, uint16_t length)
{
switch (cmd)
{
case CDC_SEND_ENCAPSULATED_COMMAND:
break;
case CDC_GET_ENCAPSULATED_RESPONSE:
break;
case CDC_SET_COMM_FEATURE:
break;
case CDC_GET_COMM_FEATURE:
break;
case CDC_CLEAR_COMM_FEATURE:
break;
/*******************************************************************************/
/* Line Coding Structure */
/*-----------------------------------------------------------------------------*/
/* Offset | Field | Size | Value | Description */
/* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
/* 4 | bCharFormat | 1 | Number | Stop bits */
/* 0 - 1 Stop bit */
/* 1 - 1.5 Stop bits */
/* 2 - 2 Stop bits */
/* 5 | bParityType | 1 | Number | Parity */
/* 0 - None */
/* 1 - Odd */
/* 2 - Even */
/* 3 - Mark */
/* 4 - Space */
/* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
/*******************************************************************************/
case CDC_SET_LINE_CODING:
break;
case CDC_GET_LINE_CODING:
break;
case CDC_SET_CONTROL_LINE_STATE:
break;
case CDC_SEND_BREAK:
break;
default:
break;
}
return (USBD_OK);
}
/**
* @brief CDC_Receive_FS
* Data received over USB OUT endpoint are sent over CDC interface
* through this function.
*
* @note
* This function will block any OUT packet reception on USB endpoint
* until exiting this function. If you exit this function before transfer
* is complete on CDC interface (i.e. using DMA controller) it will result
* in receiving more data while previous ones are still not sent.
*
* @param Buf: Buffer of data to be received
* @param Len: Number of data received (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
*/
static int8_t CDC_Receive_FS (uint8_t* Buf, uint32_t *Len)
{
for( uint32_t i=0;i<* Len;i++)
{
commandBuffer.data[commandBuffer.idx]=Buf[i];
commandBuffer.idx++;
}
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
USBD_CDC_ReceivePacket(&hUsbDeviceFS);
return (USBD_OK);
}
/**
* @brief CDC_Transmit_FS
* Data send over USB IN endpoint are sent over CDC interface
* through this function.
* @note
*
*
* @param Buf: Buffer of data to be send
* @param Len: Number of data to be send (in bytes)
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
*/
uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
{
uint8_t result = USBD_OK;
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
if (hcdc->TxState != 0){
return USBD_BUSY;
}
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
return result;
}
/* The READ function, used in trcStreamingPort.h */
int32_t trcCDCReceive(void *data, uint32_t size, int32_t* NumBytes)
{
uint32_t i,diff;
if(commandBuffer.idx>0)
{
if (size >= commandBuffer.idx) // more than what is stored, number of bytes will be .idx
{
memcpy(data,commandBuffer.data, commandBuffer.idx);
*NumBytes=commandBuffer.idx;
commandBuffer.idx=0; // Make the buffer ready for a new command
}
else //If some data in the buffer is not read
{
diff = commandBuffer.idx-size;
memcpy(data,commandBuffer.data, size);
for(i=0;i<diff;i++)
{
commandBuffer.data[i]=commandBuffer.data[i+size];
}
*NumBytes=size;
commandBuffer.idx=diff;
}
}
else
{
*NumBytes=0;
}
return 0;
}
/* The WRITE function, used in trcStreamingPort.h */
int32_t trcCDCTransmit(void* data, uint32_t size, int32_t * noOfBytesSent )
{
int32_t result;
result=CDC_Transmit_FS(data, size);
*noOfBytesSent = size;
/* Return value should be 0 on success (not sure what the value of USBD_OK is) */
if (result == USBD_OK)
return 0;
else
return -1;
}
/**
* @brief This function handles USB On The Go FS global interrupt.
*/
void OTG_FS_IRQHandler(void)
{
HAL_PCD_IRQHandler(&hpcd_USB_OTG_FS);
}
#endif /*(TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING)*/
#endif /*(TRC_USE_TRACEALYZER_RECORDER == 1)*/