用TivaC LaunchPad 驱动oled128x64屏代码
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实验平台:TivaC LaunchPad
OLED128x64模式:8080,支持4SPI
IDE环境:CCS5.2
引脚定义:pe2-wr
pe3-rd
pe1-cs
pe4-dc
pe5-rst
PB0~7数据端口设为输出
参考资料:《ARM Cortex核 TI微控制器原理与应用》马忠梅等编,SSD1306 Datasheet,正点原子STM32,energia等
模块文件主要有OLED128x64.C和OLED128x64.H两个文件。还有Font字库文件,这里不再写出,附在附件中。
只需修改源文件中红色标注的代码,便可以修改对应引脚,实现需要的硬件定义,程序中有一点需要说明:
PORTE 和PORTB的引脚时钟配置(代码红色加粗部分,在OLED_Init()中.)只能分开配置,不然程序会卡在OLED_Init();
-------------------------------------------oled128x64源文件------------------------------------------------
/*
* oled128x64.c
*
* Created on: 2013-11-3
* Author: Administrator
*/
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/gpio.h"
#include "driverlib/sysctl.h"
#include "oled128x64.h"
#include "oledfont.h"
/*********************************************************************************
*TivaC LaunchPad OLED模块驱动代码
*SSD1306 OLED 驱动IC驱动代码
*驱动方式:8080并口/4线串口
*x-TAB
*技术论坛:www.x-tab.cn
*Created on: 2013-11-3
*版本:V1.0
*Copyright(C) x-TAB
*All rights reserved
*********************************************************************************/
//-----------------OLED端口定义----------------
#define OLED_CS_Clr() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_1,0)
#define OLED_CS_Set() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_1,0x01<<1)
#define OLED_RST_Clr() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_5,0)
#define OLED_RST_Set() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_5,0x01<<5)
#define OLED_DC_Clr() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_4,0)
#define OLED_DC_Set() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_4,0x01<<4)
#define OLED_WR_Clr() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_2,0)
#define OLED_WR_Set() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_2,0x01<<2)
#define OLED_RD_Clr() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_3,0)
#define OLED_RD_Set() GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_3,0x01<<3)
//PB0~7,作为数据线
#define DATAOUT(x) GPIOPinWrite(GPIO_PORTB_BASE,0xff,x);//输出
//使用4线串行接口时使用
#define OLED_SCLK_Clr() GPIOPinWrite(GPIO_PORTB_BASE,GPIO_PIN_0,0)
#define OLED_SCLK_Set() GPIOPinWrite(GPIO_PORTB_BASE,GPIO_PIN_0,1)
#define OLED_SDIN_Clr() GPIOPinWrite(GPIO_PORTB_BASE,GPIO_PIN_1,0)
#define OLED_SDIN_Set() GPIOPinWrite(GPIO_PORTB_BASE,GPIO_PIN_1,0x01<<1)
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
uint8_t OLED_GRAM[128][8];
//更新显存到LCD
void OLED_Refresh_Gram(void)
{
uint8_t i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(OLED_GRAM[n][i],OLED_DATA);
}
}
#if OLED_MODE==1
//向SSD1306写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(uint8_t dat,uint8_t cmd)
{
DATAOUT(dat);
if(cmd)
OLED_DC_Set();
else
OLED_DC_Clr();
OLED_CS_Clr();
OLED_WR_Clr();
OLED_WR_Set();
OLED_CS_Set();
OLED_DC_Set();
}
#else
//向SSD1306写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(uint8_t dat,uint8_t cmd)
{
uint8_t i;
if(cmd)
OLED_DC_Set();
else
OLED_DC_Clr();
OLED_CS_Clr();
for(i=0;i<8;i++)
{
OLED_SCLK_Clr();
if(dat&0x80)
OLED_SDIN_Set();
else
OLED_SDIN_Clr();
OLED_SCLK_Set();
dat<<=1;
}
OLED_CS_Set();
OLED_DC_Set();
}
#endif
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
uint8_t i,n;
for(i=0;i<8;i++)for(n=0;n<128;n++)OLED_GRAM[n][i]=0x00;
OLED_Refresh_Gram();//更新显示
}
//画点
//x:0~127
//y:0~63
//t:1 填充 0,清空
void OLED_DrawPoint(uint8_t x,uint8_t y,uint8_t t)
{
uint8_t pos,bx,temp=0;
if(x>127||y>63)return;//超出范围了.
pos=7-y/8;
bx=y%8;
temp=1<<(7-bx);
if(t)OLED_GRAM[x][pos]|=temp;
else OLED_GRAM[x][pos]&=~temp;
}
//x1,y1,x2,y2 填充区域的对角坐标
//确保x1<=x2;y1<=y2 0<=x1<=127 0<=y1<=63
//dot:0,清空;1,填充
void OLED_Fill(uint8_t x1,uint8_t y1,uint8_t x2,uint8_t y2,uint8_t dot)
{
uint8_t x,y;
for(x=x1;x<=x2;x++)
{
for(y=y1;y<=y2;y++)OLED_DrawPoint(x,y,dot);
}
OLED_Refresh_Gram();//更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t size,uint8_t mode)
{
uint8_t temp,t,t1;
uint8_t y0=y;
chr=chr-' ';//得到偏移后的值
for(t=0;t
{
if(size==12)temp=oled_asc2_1206[chr][t]; //调用1206字体
else temp=oled_asc2_1608[chr][t]; //调用1608字体
for(t1=0;t1<8;t1++)
{
if(temp&0x80)OLED_DrawPoint(x,y,mode);
else OLED_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==size)
{
y=y0;
x++;
break;
}
}
}
}
//m^n函数
uint32_t oled_pow(uint8_t m,uint8_t n)
{
uint32_t result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size)
{
uint8_t t,temp;
uint8_t enshow=0;
for(t=0;t
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
OLED_ShowChar(x+(size/2)*t,y,' ',size,1);
continue;
}else enshow=1;
}
OLED_ShowChar(x+(size/2)*t,y,temp+'0',size,1);
}
}
//显示字符串
//x,y:起点坐标
//*p:字符串起始地址
//用16字体
void OLED_ShowString(uint8_t x,uint8_t y,const char *p)
{
#define MAX_CHAR_POSX 122
#define MAX_CHAR_POSY 58
while(*p!='\0')
{
if(x>MAX_CHAR_POSX){x=0;y+=16;}
if(y>MAX_CHAR_POSY){y=x=0;OLED_Clear();}
OLED_ShowChar(x,y,*p,16,1);
x+=8;
p++;
}
}
//婓硌隅弇离珆尨珨跺犖趼
//x:0~127
//y:0~63
//fno:犖趼晤瘍
//mode:0,毀啞珆尨;1,淏都珆尨
//22*22湮苤腔趼睫
void OLED_ShowFont22(uint8_t x,uint8_t y,uint8_t fno,uint8_t mode)
{
uint8_t temp,t,t1;
uint8_t y0=y;
for(t=0;t<66;t++)
{
if(t<33)temp=user_hz[fno*2][t]; //覃蚚22*22犖趼
else temp=user_hz[fno*2+1][t-33];
for(t1=0;t1<8;t1++)
{
if(temp&0x80)OLED_DrawPoint(x,y,mode);
else OLED_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==22)
{
y=y0;
x++;
break;
}
}
}
}
//初始化SSD1306
void OLED_Init(void)
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_2|GPIO_PIN_3);//PE2,3推挽输出 (pe2-wr,pe3-rd)
GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_2|GPIO_PIN_3,0xff);//PE2,3输出高
#if OLED_MODE==1
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE,0xff);//PB0~7数据端口设为输出
GPIOPinWrite(GPIO_PORTB_BASE,0xff,0xff);//PB0~7输出高
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5);//PE1,4,5推挽输出 (pe1-cs,pe4-dc,pe5-rst)
GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5,0xff);//PE1,4,5输出高
#else
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE,GPIO_PIN_0|GPIO_PIN_1);//PB0,1输出 (4-Wire SPI pb0-sclk,pb1-sdin)
GPIOPinWrite(GPIO_PORTB_BASE,GPIO_PIN_0|GPIO_PIN_1,0xff);//PB0,1输出高
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_0|GPIO_PIN_5);//PE5推挽输出 (pe5-rst)
GPIOPinWrite(GPIO_PORTE_BASE,GPIO_PIN_5,0x01<<5);//PE5输出高
#endif
OLED_RST_Clr();
delay_ms(10);
OLED_RST_Set();
OLED_WR_Byte(0xAE,OLED_CMD); //关闭显示
OLED_WR_Byte(0xD5,OLED_CMD); //设置时钟分频因子,震荡频率
OLED_WR_Byte(80,OLED_CMD); //[3:0],分频因子;[7:4],震荡频率
OLED_WR_Byte(0xA8,OLED_CMD); //设置驱动路数
OLED_WR_Byte(0X3F,OLED_CMD); //默认0X3F(1/64)
OLED_WR_Byte(0xD3,OLED_CMD); //设置显示偏移
OLED_WR_Byte(0X00,OLED_CMD); //默认为0
OLED_WR_Byte(0x40,OLED_CMD); //设置显示开始行 [5:0],行数.
OLED_WR_Byte(0x8D,OLED_CMD); //电荷泵设置
OLED_WR_Byte(0x14,OLED_CMD); //bit2,开启/关闭
OLED_WR_Byte(0x20,OLED_CMD); //设置内存地址模式
OLED_WR_Byte(0x02,OLED_CMD); //[1:0],00,列地址模式;01,行地址模式;10,页地址模式;默认10;
OLED_WR_Byte(0xA1,OLED_CMD); //段重定义设置,bit0:0,0->0;1,0->127;
OLED_WR_Byte(0xC0,OLED_CMD); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
OLED_WR_Byte(0xDA,OLED_CMD); //设置COM硬件引脚配置
OLED_WR_Byte(0x12,OLED_CMD); //[5:4]配置
OLED_WR_Byte(0x81,OLED_CMD); //对比度设置
OLED_WR_Byte(0xEF,OLED_CMD); //1~255;默认0X7F (亮度设置,越大越亮)
OLED_WR_Byte(0xD9,OLED_CMD); //设置预充电周期
OLED_WR_Byte(0xf1,OLED_CMD); //[3:0],PHASE 1;[7:4],PHASE 2;
OLED_WR_Byte(0xDB,OLED_CMD); //设置VCOMH 电压倍率
OLED_WR_Byte(0x30,OLED_CMD); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
OLED_WR_Byte(0xA4,OLED_CMD); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
OLED_WR_Byte(0xA6,OLED_CMD); //设置显示方式;bit0:1,反相显示;0,正常显示
OLED_WR_Byte(0xAF,OLED_CMD); //开启显示
OLED_Clear();
}
void delay_ms(uint8_t t) //延时约t*10ms
{
SysCtlDelay(t*SysCtlClockGet()/400);
} 复制代码 --------------------------------------oled128x64头文件-----------------------------------------------
/*
* oled128x64.h
*
* Created on: 2013-11-3
* Author: Administrator
*/
#ifndef OLED128X64_H_
#define OLED128X64_H_
/*********************************************************************************
*TivaC LaunchPad OLED模块驱动代码
*SSD1306 OLED 驱动IC驱动代码
*驱动方式:8080并口/4线串口
*x-TAB
*技术论坛:www.x-tab.cn
*Created on: 2013-11-3
*版本:V1.0
*Copyright(C) x-TAB
*All rights reserved
*********************************************************************************/
//OLED模式设置
//0:4线串行模式
//1:并行8080模式
#define OLED_MODE 1
#define OLED_CMD 0 //写命令
#define OLED_DATA 1 //写数据
//OLED控制用函数
extern void OLED_WR_Byte(uint8_t dat,uint8_t cmd);
extern void OLED_Display_On(void);
extern void OLED_Display_Off(void);
extern void OLED_Refresh_Gram(void);
extern void OLED_Init(void);
extern void OLED_Clear(void);
extern void OLED_DrawPoint(uint8_t x,uint8_t y,uint8_t t);
extern void OLED_Fill(uint8_t x1,uint8_t y1,uint8_t x2,uint8_t y2,uint8_t dot);
extern void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t size,uint8_t mode);
extern void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size);
extern void OLED_ShowString(uint8_t x,uint8_t y,const char *p);
extern void OLED_ShowFont22(uint8_t x,uint8_t y,uint8_t fno,uint8_t mode);
extern void delay_ms(uint8_t t);
#endif /* OLED128X64_H_ */ 复制代码 main.c文件:
/*
* main.c
*/
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom.h"
#include "driverlib/sysctl.h"
#include "driverlib/systick.h"
#include "oled128x64.h"
int main(void)
{
uint8_t t;
//
// Set the clocking to run directly from the crystal.
//
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ |
SYSCTL_OSC_MAIN);
OLED_Init(); //場宎趙OLED
OLED_ShowString(20,10,"X-TAB.cn");
OLED_ShowString(4,32,"TivaC launchpad");
//OLED_ShowFont22(59,32,0,1);
//OLED_ShowFont22(81,32,1,1);
//OLED_ShowFont22(103,32,2,1);
OLED_Refresh_Gram();
delay_ms(250);delay_ms(250);
OLED_Clear();
OLED_ShowString(0,0, "0.96' OLED TEST");
OLED_ShowString(0,16,"X-TAB");
OLED_ShowString(0,32,"2013/11/3");
OLED_ShowString(0,48,"ASCII:");
OLED_ShowString(63,48,"CODE:");
OLED_Refresh_Gram();
t=' ';
while(1)
{
OLED_ShowChar(48,48,t,16,1);
OLED_Refresh_Gram();
t++;
if(t>'~')t=' ';
OLED_ShowNum(103,48,t,3,16);
delay_ms(30);
}
}
复制代码
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本帖最后由 Study_Stellaris 于 2013-11-6 13:20 编辑 ]