Vector CANOE VT2516A配置详解_vt2516板卡-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_30793029/article/details/134980557

Vector CANoe CAPL系列相关文章导览，下面链接可直接跳转

CAPL入门到精通文章导览

Vector CANoe VT System系列板卡文章导览，下面链接可直接跳转

Vector CANoe VT system传送门

引言

本章节继续聊VT2516A数字板卡的功能，板卡详细内容见VT_System_Manual_EN.pdf，内容为个人理解，如有错误，欢迎指正

The Digital Module VT2516A is connected to up to 16 mainly digitally used inputs and outputs of an ECU. Mainly digitally used means that the signals have two states. In real in-vehicle operation actuators like signal lamps or sensors like switches are connected to these ECU I/Os.

The VT2516A provides several features to check the ECU behavior regarding these ECU inputs/outputs:

For ECU output:
- Measurement of the digital ECU output signal (incl. PWM) and the ECU output voltage
- Simulation of the actuator load by an externally mounted load (e.g. a resistor)
FOr ECU input:
- Sensor simulation by output of a digital or PWM signal with defined high/low level
- Sensor simulation by switching the ECU line to ECU ground or $V_{batt}$
Relays to connect the ECU input or output to the original sensor or actuator
Relays to generate electrical errors like disconnection of ECU lines (“open load, broken wire”)

好长一段内容，说的啥呢

VT2516A板卡总共有16个数字型输入/输出通道，注意是单端信号
支持PWM测量和输入信号的电压测量
输出数字、PWM信号模拟传感器；将ECU引脚短接到地、电源模拟传感器。
通过继电器控制ECU输入输出，传感器和执行器的通断。
通过继电器制造电器故障，如断开负载，线路开路。
通过继电器接入真实负载/传感器
通过继电器接入模拟上拉或下拉电阻工况

VT2516A FPGA

手上暂时没有这个可编程板卡，等遇到了再补充

前后面板图

front

Usage

Basic Connection Scheme

Connecting the ECU

手册里面讲了很多典型应用场景

注意接线的时候是接在ECU侧的

Signal Path Switching

左侧对应ECU，中间是通过继电器切换的几种功能，右侧是可以实现的功能，如测量PWM、电压，输出电压，输出PWM。图很清晰，可以自己研究一下。

Bus Bars

由于是单端信号，line b通过一个继电器切换到 $V_{batt}$ 或者GND

Measuring the Digital Input Signal

测量数字输入信号

采样频率为50us，具体信号操作对应在CANoe中的系统变量，后面会介绍到。

Voltage Measurement

测量区间 -40V ~ +40V, 后面会介绍详细参数

测量电压信号，具体信号操作对应在CANoe中的系统变量，后面会介绍到。

Outputting a Digital Signal

输出数字信号，高低电平，PWM信号等，具体信号操作对应在CANoe中的系统变量，后面会介绍到。

Load or Pull-up/down Resistor

接入真实负载（如接个LED），模拟上拉或下拉电阻。

接插件定义

看手册5.4章节

Technical Data VT2516A

手册中都有，这里再贴一下

General

Input Signals and Switches

Digital Input

PWM Measurement

Voltage Measurement

测量电压的精度取决于两个部分（值的百分比 + 偏移）

例如，如果测量电压为 -5 V，则精度为 ±175 mV（5V的 0.5 % + 150 mV）。

Digital Output

PWM Generation

CAPL实例

VT System Configuration

连接板卡，不知道咋操作的，看这里里面有详细说明

VT System Configuration

VT System Control

Output settings通过CAPL脚本来控制

type

CAPL函数库

Functions

(搜索这个文件CAPLfunctionsVTSystemOverview.htm，有详细介绍，包括函数使用示例等)

System Variables

system-defined

创建variables

根据需要创建如下variables以便于后续panel和capl进行调用

user-defined

制作Panel

panel

数字量电压输出
PWM输出
电压采集
PWM采集

编写CAPL脚本

输出模式枚举

variables
{
  // Defines the modes in which each channel can be
  enum VT2516Modes { None, DigitalOut, PWMGenerator };

  // Stores the mode in which each channel is
  enum VT2516Modes VT2516Ch1Mode = None;
  enum VT2516Modes VT2516Ch2Mode = None;
  enum VT2516Modes VT2516Ch3Mode = None;
  enum VT2516Modes VT2516Ch4Mode = None;

  // Used to refresh measurement values
  msTimer refreshTimer;
}

控制输出模式

switchModeVT2516 ( int channel, enum VT2516Modes mode )
{
    if( channel == 1 )
    {
        if( VT2516Ch1Mode != mode )
        {
            VT2516Ch1Mode = mode;
            if( mode == DigitalOut )
            {
                // Configure VT module channel as a digital output generator
                // See the CANoe help for details
                sysvar::VTS::Digital_Ch1.SetPWMVoltageHigh (5.0);
                sysvar::VTS::Digital_Ch1.SetPWMVoltageLow (0.0);
                sysvar::VTS::Digital_Ch1.SetCurveType (0);
                sysvar::VTS::Digital_Ch1.SetStimulationMode (1);
            }
            else if( mode == PWMGenerator )
            {
                // Configure VT module channel as a PWM generator
                // See the CANoe help for details
                sysvar::VTS::Digital_Ch1.StopStimulation();
                sysvar::VTS::Digital_Ch1.SetStimulationMode(1);
                sysvar::VTS::Digital_Ch1.SetCurveType(1);
                sysvar::VTS::Digital_Ch1.SetPWMVoltageLow(0.0);
                sysvar::VTS::Digital_Ch1.SetPWMVoltageHigh(5.0);
                sysvar::VTS::Digital_Ch1.SetPWMRepeats(0);
                sysvar::VTS::Digital_Ch1.StartStimulation();
                @sysvar::VTS::Digital_Ch1::PWMOutputDC = 40;
                @sysvar::VT2516::Ch1_DigitalOut = 0;
            }//end if
        }//end if
    }
    else if (channel == 2)
    {
        // add code ...
    }
}

Go to PWM output mode

on sysvar sysvar::VT2516::Ch1_Frequency
{
  // Enable PWM
  @sysvar::VT2516::Ch1_PWMActive = 1;

  // Go to PWM output mode on this channel (switchMode function handles the VT configuration change)
  switchModeVT2516( 1, PWMGenerator );
  // Send setting from the panel to the VT module
  @sysvar::VTS::Digital_Ch1::PWMOutputFreq  = @sysvar::VT2516::Ch1_Frequency;
}

// Enable PWM
on sysvar sysvar::VT2516::Ch1_PWMActive
{
  if( @sysvar::VT2516::Ch1_PWMActive == 1 )
  {
    switchModeVT2516( 1, None );
    switchModeVT2516( 1, PWMGenerator );

  }
  else
    sysvar::VTS::Digital_Ch1.StopStimulation();
}

Go to digital output mode

on sysvar sysvar::VT2516::Ch1_DigitalOut
{
  // Go to digital output mode on this channel (switchMode function handles the VT configuration change)
  switchModeVT2516( 1, DigitalOut );
  // Send setting from the panel to the VT module
  @sysvar::VTS::Digital_Ch1::DigitalOutput  = @sysvar::VT2516::Ch1_DigitalOut;

  // Disable PWM
  @sysvar::VT2516::Ch1_PWMActive = 0;
}

Read value and display on the panel

在timer里面调用或者根据需要采用其他方式

void readValueFromVT2516()
{
    /* Read the current voltage value and store it in the
    // corresponding system variable to display it in the panel.
    */

    @sysvar::VT2516::Ch1_Voltage = @sysvar::VTS::Digital_Ch1::Cur;

    /* Read the current frequency value and store it in the
    // corresponding system variable to display it in the panel.
    */
    @sysvar::VT2516::Ch1_PWM = @sysvar::VTS::Digital_Ch1::PWMFreq;

    // add code ...
}