LCDDATA寄存器没有被分配

这样做的目的是：Exchange的无符号char LCDATA0@ 0x1D18；而你没有显示“显示”设置在任何地方，所以我们怎么知道应该发生什么？



      以下为原文

    What is the purpose of this:  extern volatile unsigned char LCDDATA0 @ 0x1D18;
 
And you're not showing "Display" being set anywhere, so how can we know what should be happening?

您好，谢谢您的回复。老实说，我对“Exchange的无符号char LCDATATS0x1D18”的目的不是100%肯定，但在我看来这是一个变量的声明。我对用微控制器编码很新。这个代码是由基于我正在使用的芯片的Microchip代码配置器生成的。“显示”是一个结构，其中声明了LCDyReavestSub缓冲区。其余代码并不重要，因为我已经多次验证，我能够将正确的值分配给LCDyReavestBuffor（一个无符号字符）。我将在这里包含定义，以帮助它：基本上，重新声明：我有一个值存储在LCDyReavestSub缓冲区（例如0B1100101或0xC5）。我试图把它分配给由MCC创建的LCDATA寄存器，但它不起作用。我已经验证了LCDyReavestSub缓冲区正在存储正确的数据，但在上述分配之后，LCDATA寄存器仍然是空的。



      以下为原文

    Hi jtemples, thanks for the reply.
 
To be completely honest, I'm not 100% sure as to the purpose of the 'extern volatile unsigned char LCDDATA @ 0x1D18' but it seems to me to be a declaration of that variable. I'm pretty new to coding with microcontrollers. This code was generated by Microchip Code Configurator based on the chip that I am using. 'Display' is a structure with LCD_Register_Buffer declared inside of it. The rest of that code isn't important, as I have verified multiple times that I am able to assign the correct value to the LCD_Register_Buffer (an unsigned char). I'll include the definition here in case it helps:
 
   struct Disp
 {

    unsigned char LCD_Register_Buffer[6]; // used for building up bytes prior to write
    to hardware

};

struct Disp Display;
 
Basically, to restate: I have a value stored in the LCD_Register_Buffer (e.g. 0b11000101 or 0xc5). I'm trying to assign that to the LCDDATA register as created by the MCC, but it isn't working. I have verified that the LCD_Register_Buffer is storing the right data, bu the LCDDATA register remains null after the above assignment.

你使用的是什么设备？请发布完整的源代码。



      以下为原文

    What device are you using? 
Please post the entire source code.

我使用的是PIC16F19197，它带有LCD外围设备，几乎没有别的东西。生成代码：LCD.HEMAGER代码：LCD.C生成代码：PIC16F19197.H太大，不包括在这里，但上面包含了LCDATA部分。



      以下为原文

    I'm using the PIC16F19197 with the LCD peripheral enabled and pretty much nothing else.
 
Generated Code: LCD.h
/**
  LCD Generated Driver API Header File
  
  @Company
    Microchip Technology Inc.

  @File Name
    lcd.h
 
  @Summary
    This is the generated header file for the LCD driver using PIC10 / PIC12 / PIC16 / PIC18 MCUs

  @Description
    This header file provides APIs for driver for LCD.
    Generation Information :
        Product Revision : PIC10 / PIC12 / PIC16 / PIC18 MCUs - 1.65.2
        Device : PIC16F19197
        Driver Version : 2.01
    The generated drivers are tested against the following:
        Compiler : XC8 1.45
        MPLAB : MPLAB X 4.15
*/

/*
    (c) 2018 Microchip Technology Inc. and its subsidiaries.
    
    Subject to your compliance with these terms, you may use Microchip software and any
    derivatives exclusively with Microchip products. It is your responsibility to comply with third party
    license terms applicable to your use of third party software (including open source software) that
    may accompany Microchip software.
    
    THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
    EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY
    IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS
    FOR A PARTICULAR PURPOSE.
    
    IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
    INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND
    WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP
    HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO
    THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL
    CLAIMS IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT
    OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS
    SOFTWARE.
*/

#ifndef LCD_H
#define LCD_H

/**
  Section: Included Files
*/

#include
#include

/**
    Section: Defines
*/
 
/**
    Defines: the segments pins
*/
#define SEG00 LCDSE0bits.SE00
#define SEG01 LCDSE0bits.SE01
#define SEG02 LCDSE0bits.SE02
#define SEG03 LCDSE0bits.SE03
#define SEG04 LCDSE0bits.SE04
#define SEG05 LCDSE0bits.SE05
#define SEG06 LCDSE0bits.SE06
#define SEG07 LCDSE0bits.SE07
#define SEG08 LCDSE1bits.SE08
#define SEG09 LCDSE1bits.SE09
#define SEG10 LCDSE1bits.SE10
#define SEG11 LCDSE1bits.SE11
#define SEG12 LCDSE1bits.SE12
#define SEG13 LCDSE1bits.SE13
#define SEG14 LCDSE1bits.SE14
#define SEG15 LCDSE1bits.SE15
#define SEG16 LCDSE2bits.SE16
#define SEG17 LCDSE2bits.SE17
#define SEG18 LCDSE2bits.SE18
#define SEG19 LCDSE2bits.SE19
#define SEG20 LCDSE2bits.SE20
#define SEG21 LCDSE2bits.SE21
#define SEG22 LCDSE2bits.SE22
#define SEG23 LCDSE2bits.SE23
#define SEG24 LCDSE3bits.SE24
#define SEG25 LCDSE3bits.SE25
#define SEG26 LCDSE3bits.SE26
#define SEG27 LCDSE3bits.SE27
#define SEG28 LCDSE3bits.SE28
#define SEG29 LCDSE3bits.SE29
#define SEG30 LCDSE3bits.SE30
#define SEG31 LCDSE3bits.SE31
#define SEG32 LCDSE4bits.SE32
#define SEG33 LCDSE4bits.SE33
#define SEG34 LCDSE4bits.SE34
#define SEG35 LCDSE4bits.SE35
#define SEG36 LCDSE4bits.SE36
#define SEG37 LCDSE4bits.SE37
#define SEG38 LCDSE4bits.SE38
#define SEG39 LCDSE4bits.SE39
#define SEG40 LCDSE5bits.SE40
#define SEG41 LCDSE5bits.SE41
#define SEG42 LCDSE5bits.SE42
#define SEG43 LCDSE5bits.SE43
#define SEG44 LCDSE5bits.SE44
#define SEG45 LCDSE5bits.SE45

/**
  Section: Interface Routines
*/

/**
  @Summary
    Initializes the LCD module

  @Description
    This routine should only be called once during system initialization.

  @Preconditions
    None.

  @Param
    None.

  @Returns
    None.

  @Example
    
    LCD_Initialize();
    
*/
void LCD_Initialize(void);

/**
    @Summary
        Enable LCD module
        
    @Description
        This routine enables LCD module.
        
    @Preconditions
        None.

    @Param
        None.

    @Returns
        None.
      
    @Example
        
        LCD_Enable();
        
*/
void LCD_Enable (void);

/**
    @Summary
        Disable LCD module
        
    @Description
        This routine disables LCD module.
        
    @Preconditions
        None.

    @Param
        None.

    @Returns
        None.
      
    @Example
        
        LCD_Disable();
        
*/
void LCD_Disable (void);

/**
    @Summary
        Enable sleep mode for LCD module
        
    @Description
        This routine enables the sleep mode for LCD module.
        
    @Preconditions
        None.

    @Param
        None.

    @Returns
        None.
      
    @Example
        
        LCD_EnableSleepMode();
        
*/
void LCD_EnableSleepMode (void);

/**
    @Summary
        Disable sleep mode for LCD module
        
    @Description
        This routine disables the sleep mode for LCD module.
        
    @Preconditions
        None.

    @Param
        None.

    @Returns
        None.
      
    @Example
        
        LCD_DisableSleepMode();
        
*/
void LCD_DisableSleepMode (void);

/**
    @Summary
        Set contrast for LCD module
        
    @Description
        This routine set the contrast value for LCD module.
        
    @Preconditions
       If The internal reference source bit is 0, then the internal LCDcontrast control is unconnected.

    @Param
        Pass the contrast bits value.
        This range for this value is specific for each device.

    @Returns
        None.
      
    @Example
        
        LCD_SetContrast (value);
        
*/
void LCD_SetContrast (unsigned int value);

/**
    @Summary
        Set LCD module power mode for A interval.
        
    @Description
        This routine set the LCD module reference ladder A time
        power control.
        
    @Preconditions
        None.

    @Param
        Pass the power bits value.

    @Returns
        None.
      
    @Example
        
        LCD_SetIntervalAPowerMode (value);
        
*/
void LCD_SetIntervalAPowerMode (unsigned int value);

/**
    @Summary
        Set LCD module power mode for B interval.
        
    @Description
        This routine set the LCD module reference ladder B time
        power control.
        
    @Preconditions
        None.

    @Param
        Pass the power bits value.

    @Returns
        None.
      
    @Example
        
        LCD_SetIntervalBPowerMode (value);
        
*/
void LCD_SetIntervalBPowerMode (unsigned int value);

/**
    @Summary
        Set LCD module power distribution.
        
    @Description
        This routine set the LCD module power distribution during
        waveform intervals.
        
    @Preconditions
        None.

    @Param
        Pass the power bits value.

    @Returns
        None.
      
    @Example
        
        LCD_SetPowerDistribution (value);
        
*/
void LCD_SetPowerDistribution (unsigned int value);

/**
    @Summary
        Returns true if the LCD module is active, otherwise false.
        
    @Description
        This routine is used to determine if the LCD module is active.
        
    @Preconditions
        None.

    @Param
        Node.

    @Returns
        true - If module is active.
        false - If module is not active.
      
    @Example
        
         LCD_Initialize();
         while(!LCD_IsActive()); // wait until the module is available
        
*/
bool LCD_IsActive (void);



#endif /*_LCD_H*/
 
Generated Code: LCD.c
 
/**
  LCD Generated Driver File
  
  @Company
    Microchip Technology Inc.

  @File Name
    lcd.c

  @Summary
    This is the generated driver implementation file for the LCD driver using PIC10 / PIC12 / PIC16 / PIC18 MCUs

  @Description
    This header file provides implementations for driver APIs for LCD.
    Generation Information :
        Product Revision : PIC10 / PIC12 / PIC16 / PIC18 MCUs - 1.65.2
        Device : PIC16F19197
        Driver Version : 2.01
    The generated drivers are tested against the following:
        Compiler : XC8 1.45
        MPLAB : MPLAB X 4.15
*/

/*
    (c) 2018 Microchip Technology Inc. and its subsidiaries.
    
    Subject to your compliance with these terms, you may use Microchip software and any
    derivatives exclusively with Microchip products. It is your responsibility to comply with third party
    license terms applicable to your use of third party software (including open source software) that
    may accompany Microchip software.
    
    THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
    EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY
    IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS
    FOR A PARTICULAR PURPOSE.
    
    IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
    INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND
    WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP
    HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO
    THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL
    CLAIMS IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT
    OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS
    SOFTWARE.
*/

/**
  Section: Included Files
*/

#include
#include "lcd.h"

/**
  Section: LCD APIs
*/

void LCD_Initialize(void)
{
    // Disable module before configuring
    LCDCONbits.LCDEN = 0;

    // set the LCD to the options selected in the User Interface
    // LP 1:1; WFT Type-A waveform;
    LCDPS = 0x00;
    
    // LCDCST Max contrast (Min Resistance);
    LCDREF = 0x00;
    
    // LRLAP disabled; LCDIRI disabled; LRLAT Always B Power mode;
    LCDRL = 0x00;
    
    // BIAS 3.30V; EN5V disabled; LPEN disabled;
    LCDVCON1 = 0x05;
    
    // CPWDT enabled; LCDVSRC Charge Pump only;
    LCDVCON2 = 0x06;
    
 //Enable used segments
 LCDSE0 = 0xFF;
 LCDSE1 = 0xFF;
 LCDSE2 = 0xF7;
 LCDSE3 = 0xCB;
 LCDSE4 = 0x18;
 LCDSE5 = 0x00;
 
    // CS LFINTOSC; SLPEN disabled; WERR No LCD Write Error; LMUX Static COM0; LCDEN enabled;
    LCDCON = 0xC1;
 
}

void LCD_Enable (void)
{
    LCDCONbits.LCDEN = 1;
}

void LCD_Disable (void)
{
    LCDCONbits.LCDEN = 0;
}

void LCD_EnableSleepMode (void)
{
    LCDCONbits.SLPEN = 1;
}

void LCD_DisableSleepMode (void)
{
    LCDCONbits.SLPEN = 0;
}

void LCD_SetContrast (unsigned int value)
{
    LCDREFbits.LCDCST = value;
}

void LCD_SetIntervalAPowerMode (unsigned int value)
{
    LCDRLbits.LRLAP = value;
}

void LCD_SetIntervalBPowerMode (unsigned int value)
{
    LCDRLbits.LRLBP = value;
}

void LCD_SetPowerDistribution (unsigned int value)
{
    LCDRLbits.LRLAT = value;
}

bool LCD_IsActive (void)
{
    return LCDPSbits.LCDA;
}

// end of file
 
Generated Code: pic16f19197.h - too big to include here, but the LCDDATA part is included above.
 

另外，我尝试直接在我的主程序中直接分配寄存器：但是LCDATA寄存器仍然是空的。



      以下为原文

    Additionally I have tried simply directly assigning the registers in my main program as follows:
 
 int main(void)
{

    SYSTEM_Initialize();
    

    LCDDATA0 = 0xff;
    LCDDATA1 = 0b11110111;
    LCDDATA2 = 0b11110111;
    LCDDATA3 = 0b11001011;
    LCDDATA4 = 0b00011000;
    LCDDATA5 = 0b00000001;
    
    }
 
But the LCDDATA registers still remain null.

你好，我已经解决了这个问题。我意外地禁用了外围模块中LCD外围设备的禁用寄存器，从而无法写入那个外围设备。谢谢！对不起任何看这个的人…这个问题是不可能从我提供的信息中找到的。



      以下为原文

    Hello,
 
I have solved the issue. I accidentally had disabled the LCD peripheral in the Peripheral Module Disable register, thus being unable to write to that peripheral. Thanks!
 
Sorry for anyone who looked at this... that problem was impossible to find from the info that I provided.