[Cortex-M0技术交流] 菜鸟学习M0第六帖——LCM

/*---------------------------------------------------------------------------------------------------------*/

/* */

/* Copyright(c) 2011 Nuvoton Technology Corp. All rights reserved. */

/* */

/*---------------------------------------------------------------------------------------------------------*/

#include "includes.h" //包含所需的头文件

/*************************************************************************************

** Function name: main

** Descriptions: LCM + 流水灯

** input parameters: 无

** output parameters: 无

** Returned value: 无

*************************************************************************************/

int main (void)

{ 

Set_System();

LCMTextOut( 1,"祝菜农老师的学习"); 

LCMTextOut( 17,"菜地越办越好越办"); 

LCMTextOut(9,"越红火！"); 

while(1)

{

DrvGPIO_SetBit(E_GPA,5);

DrvGPIO_ClrBit(E_GPA,2);

delay_ms(100);

DrvGPIO_SetBit(E_GPA,2);

DrvGPIO_ClrBit(E_GPA,3);

delay_ms(100);

DrvGPIO_SetBit(E_GPA,3);

DrvGPIO_ClrBit(E_GPA,4);

delay_ms(100);

DrvGPIO_SetBit(E_GPA,4);

DrvGPIO_ClrBit(E_GPA,5);

delay_ms(100);

} 

}

#include "includes.h" //包含所需的头文件

/*************************************************************************************

** Function name: Set_System

** Descriptions: 系统

** input parameters: 无

** output parameters: 无

** Returned value: 无

*************************************************************************************/

void Set_System(void)

{

RCC_Configuration(); //配置系统时钟



GPIO_Configuration(); //配置GPIO



LCMInit(); //初始化液晶

}







/*************************************************************************************

** Function name: RCC_Configuration

** Descriptions: 系统时钟源设置

** input parameters: none

** output parameters: none

** Returned value: none

*************************************************************************************/

void RCC_Configuration(void)

{

UNLOCKREG(); // 对写保护位操作时 需要一次向0x50000 0100写入 0x59,0x16,0x88,

DrvSYS_SetOscCtrl(E_SYS_XTL12M, 1);//与其 SYSCLK->PWRCON.XTL12M_EN = 1; 等同

// PWRCON寄存器(这些寄存器在上电复位到用户解锁定之前是锁定的)除了 BIT[6]位其他位都受写保护

// 解除这些需要向 0x50000 0100写入 0x59,0x16,0x88, 

// 令PWRCON寄存器的BITP[0]为1（即设定12M外部晶振）

delay_ms(100); //while (DrvSYS_GetChipClockSourceStatus(E_SYS_XTL12M) != 1);//等待外部12MHZ晶振就绪

LOCKREG(); // 向“0x5000_0100”写入任何值，就可以重锁保护寄存器 

}

/*************************************************************************************

** Function name: GPIO_Configuration

** Descriptions: 端口配置

** input parameters: none

** output parameters: none

** Returned value: none

*************************************************************************************/

void GPIO_Configuration()

{

DrvGPIO_Open( E_GPA, 2, E_IO_OUTPUT ); //DB0~DB7

DrvGPIO_Open( E_GPA, 3, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 4, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 5, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 6, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 7, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 8, E_IO_OUTPUT );

DrvGPIO_Open( E_GPA, 9, E_IO_OUTPUT );

DrvGPIO_Open( E_GPC, 14, E_IO_OUTPUT ); //RS

DrvGPIO_Open( E_GPC, 15, E_IO_OUTPUT ); //R/W

DrvGPIO_Open( E_GPC, 6, E_IO_OUTPUT ); //EN

}



/*************************************************************************************

** Function name: delay_ms

** Descriptions: 1ms(晶振为12MHZ)延时子程序

** input parameters: count

** output parameters: 无

** Returned value: 无

*************************************************************************************/

void delay_ms(uint32_t count)

{

uint32_t i,j;

for(i=count;i>0;i--)

for(j=2395;j>0;j--);

}

#ifndef __HW_CONFIG_H__

#define __HW_CONFIG_H__

void Set_System(void);

void RCC_Configuration(void);

void GPIO_Configuration(void);

void delay_ms(uint32_t count);

#endif

#include "includes.h" //包含所需的头文件



//Write Command

void WriteCommandLCM(uint32_t in_com)

{ 

int32_t com;

com = in_com;

com <<= 2;

DrvGPIO_ClrBit(E_GPC,15);//LCD_RW = 0;

DrvGPIO_ClrBit(E_GPC,14);//LCD_RS = 0;

DrvGPIO_SetBit(E_GPC,6); //LCD_EN = 1;

delay_ms(1);

GPIOA->DOUT = com;

delay_ms(1);

DrvGPIO_ClrBit(E_GPC,6); //LCD_EN = 0; 

DrvGPIO_SetBit(E_GPC,14);//LCD_RS = 1;

DrvGPIO_SetBit(E_GPC,15);//LCD_RW = 1; 

delay_ms(3);

} 

//Write Data

void WriteDataLCM(uint32_t in_data)

{

int32_t data;

data = in_data;

data <<= 2; 

DrvGPIO_SetBit(E_GPC,14);//LCD_RS = 1; 

DrvGPIO_ClrBit(E_GPC,15);//LCD_RW = 0;

DrvGPIO_SetBit(E_GPC,6); //LCD_EN = 1; 

delay_ms(1); 

GPIOA->DOUT = data; 

delay_ms(1); 

DrvGPIO_ClrBit(E_GPC,6); //LCD_EN = 0; 

DrvGPIO_SetBit(E_GPC,14);//LCD_RS = 1; 

DrvGPIO_SetBit(E_GPC,15);//LCD_RW = 1; 

delay_ms(3); 

} 

//Display Char String

void LCMTextOut(uint8_t address,uint8_t *LCMCharArray)

{

address--;

WriteCommandLCM(0x80+address);

while(*LCMCharArray)

{ 

WriteDataLCM(*LCMCharArray);

LCMCharArray++;

}

}

//Init LCM

void LCMInit(void)

{ 

WriteCommandLCM(0x38); //设接口数据位数(DL),显示行数(L),及字型(F)

delay_ms(10);

WriteCommandLCM(0x01); //清屏指令

delay_ms(10);

WriteCommandLCM(0x0C); //设整体显示开关(D),光标开关关(C),及光标位的字符不闪耀(B)

delay_ms(10);

WriteCommandLCM(0x06); //7设光标移动方向并指定整体显示是否移动

delay_ms(10);

WriteCommandLCM(0x80); //设DDRAM地址,设置后DDRAM数据被发送和接收

}

#ifndef __LCM_128_64_H__

#define __LCM_128_64_H__

void WriteCommandLCM(uint32_t data);

void WriteDataLCM(uint32_t in_data);

void LCMTextOut(uint8_t address,uint8_t *LCMCharArray);

void LCMInit(void);

#endif

#include <stdio.h>

#include "NUC1xx.h" 

#include "variables.h"

#include "hw_config.h"

#include "lcm_128_64.h"

#include "Driver\DrvGPIO.h"

#include "Driver\DrvSYS.h"