[参考译文] LAUNCHXL-F280049C：DCL 基准发生器

admin

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1280133/launchxl-f280049c-dcl-reference-generator

器件型号：LAUNCHXL-F280049C

您好！

我一直在尝试按照用户指南文档中的说明使用 DCL 基准发生器来生成正弦波。

我正在从配置为10us 的 timer0的 ISR 中读取结果。不过、我会一直得到一个常数值1、无论我尝试生成的波形如何、该值都没有变化。

我认为我正确地遵循了指南中的实施步骤、但我无法弄清为什么我始终得到结果1。

如果能就这一问题提供一些帮助，我将不胜感激。

2 年多前

0 admin 2 年多前

TI__Guru**** 2595160 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

您能否粘贴您要用于生成参考信号的代码片段？

0 admin 2 年多前

TI__Guru**** 2595160 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

尊敬的 Sira：

我在下面附上了我的代码：

//#############################################################################
//
// FILE:   empty_driverlib_main.c
//
//! \addtogroup driver_example_list
//! <h1>Empty Project Example</h1> 
//!
//! This example is an empty project setup for Driverlib development.
//!
//
//#############################################################################
//
//
// $Copyright:
// Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
//   Redistributions of source code must retain the above copyright 
//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the 
//   documentation and/or other materials provided with the   
//   distribution.
// 
//   Neither the name of Texas Instruments Incorporated nor the names of
//   its contributors may be used to endorse or promote products derived
//   from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//#############################################################################

//
// Included Files
//
#include "driverlib.h"
#include "device.h"
#include "board.h"
#include "c2000ware_libraries.h"
#include <DCL_refgen.h>

// variable declarations
DCL_REFGEN rgen = DCL_REFGEN_DEFAULTS;
DCL_CSS rgen_css = DCL_CSS_DEFAULTS;

int i;
float32_t x;

interrupt void ISRTimer0(void);
void initTimer(void);

//
// Main
//
void main(void)
{

    //
    // Initialize device clock and peripherals
    //
    Device_init();

    //
    // Disable pin locks and enable internal pull-ups.
    //
    Device_initGPIO();

    //
    // Initialize PIE and clear PIE registers. Disables CPU interrupts.
    //
    Interrupt_initModule();

    //
    // Initialize the PIE vector table with pointers to the shell Interrupt
    // Service Routines (ISR).
    //
    Interrupt_initVectorTable();

    //
    // PinMux and Peripheral Initialization
    //
    Board_init();

    //
    // C2000Ware Library initialization
    //
    C2000Ware_libraries_init();

    //
    // Enable Global Interrupt (INTM) and real time interrupt (DBGM)
    //
    EINT;
    ERTM;
    rgen.css = &rgen_css;
    DCL_SET_CONTROLLER_PERIOD(&rgen, 0.0001);
    DCL_resetRefgen(&rgen);
    DCL_setRefgenMode(&rgen, REFGEN_SINE);
    DCL_setRefgenFreq(&rgen, 50.0f, 0.0f);
    DCL_setRefgenAmpl(&rgen, 0.25f, 0.0f);
    //DCL_setRefgenRamp(&rgen, 0.15f, 0.01f);

    initTimer();
    while(1)
    {

    }
}

//
// End of File
//

void initTimer(void)
{
    Interrupt_register(INT_TIMER0, &ISRTimer0);
    SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_TIMER0);
    asm(" RPT #5 || NOP");

    CPUTimer_setPeriod (CPUTIMER0_BASE, 100000);
    CPUTimer_setPreScaler (CPUTIMER0_BASE, 0);

    CPUTimer_stopTimer(CPUTIMER0_BASE);
    CPUTimer_reloadTimerCounter(CPUTIMER0_BASE);
    CPUTimer_setEmulationMode(CPUTIMER0_BASE, CPUTIMER_EMULATIONMODE_STOPAFTERNEXTDECREMENT);
    CPUTimer_clearOverflowFlag(CPUTIMER0_BASE);

    /**< enable interrupt of the timer */
    CPUTimer_enableInterrupt(CPUTIMER0_BASE);

    /**< enable cpu interrupt number 13 for the timer 1 interrupt */
    Interrupt_enable(INT_TIMER0);

    /**< start timer */
    CPUTimer_startTimer(CPUTIMER0_BASE);
}

interrupt void ISRTimer0(void)
{
    DCL_runRefgen(&rgen);
    i++;
    x = DCL_getRefgenPhaseA(&rgen);
    Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP1);
}

我也在链接器文件中执行了此操作： dclfuncs：> RAMGS1、 page = 0

谢谢。

阿洛巴。