高通字库芯片GT20L16S1Y驱动 0.96寸 OLED 任意显示中文
连续两个月的加班,给ODM客户生产温控器订单,今天终于顺利发货,对于工程师出身的我,终于可以对着电脑,消停几天,研究技术,分享技术了,闲话少说,直接进入正题:
半年前有个老客户介绍个中央某院的项目,我主业是做各种温控器的,老客户介绍的新客户,没法推脱,就干吧,项目需求具体细节不方便公开,说说本次要分享的部分,要实现的功能是一个OLED任意显示一段中文句子。
项目的硬件组成比较简单:STM8L051+ KEY + OLED + GT20L16S1Y
软件平台:IAR
整个项目没什么难点,但没做过这个的,也需要一番折腾,在这里,我把项目的主要代码贴出来供电友们参考,也感谢之前版本的电友。做个靠谱的电友,除了分享单独的.c.h驱动文件,最后还会有调用伪代码,也就是整个代码的调用过程。
一:高通字库芯片驱动程序:
// .c文件#include "stm8l15x.h"//STM8L051/151等系列共用库函数#include "GT20L16S1Y.h"#define S1Y_CLK_L (GPIO_ResetBits(GPIOB,GPIO_Pin_4))#define S1Y_CLK_H (GPIO_SetBits(GPIOB,GPIO_Pin_4))#define S1Y_CS_L (GPIO_ResetBits(GPIOB,GPIO_Pin_5))#define S1Y_CS_H (GPIO_SetBits(GPIOB,GPIO_Pin_5))#define S1Y_SI_L (GPIO_ResetBits(GPIOB,GPIO_Pin_6))#define S1Y_SI_H (GPIO_SetBits(GPIOB,GPIO_Pin_6))#define S1Y_SO GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_7)void GT20L16_init(void){/* GT20L16S1Y 引脚配置 */GPIO_Init(GPIOB, GPIO_Pin_4, GPIO_Mode_Out_PP_Low_Fast); //高速推挽输出低电平[SCLK]GPIO_Init(GPIOB, GPIO_Pin_5, GPIO_Mode_Out_PP_Low_Fast); //高速推挽输出低电平[CS]GPIO_Init(GPIOB, GPIO_Pin_6, GPIO_Mode_Out_PP_Low_Fast); //高速推挽输出低电平[SI]GPIO_Init(GPIOB, GPIO_Pin_7, GPIO_Mode_In_PU_No_IT); //上拉输入[SO]}/***************************************ASCII 调用ASCIICode:表示ASCII 码(8bits)BaseAdd:说明该套字库在芯片中的起始地址。r_dat_bat: 是读点阵数据函数。DZ_Data:是保存读出的点阵数据的数组。****************************************/u8 S1Y_ASCII_GetData( u8 ASCIICode, u32 BaseAdd, u8* S1YDZ_Data ){if( ( ASCIICode >= 0x20 ) && ( ASCIICode <= 0x7e ) ){switch( BaseAdd ){case 0x3bfc0:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 8 + BaseAdd, 8, S1YDZ_Data ); //5X7break ;case 0x66c0:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 8 + BaseAdd, 8, S1YDZ_Data ); //7X8break ;case 0x3b7c0:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 16 + BaseAdd, 16, S1YDZ_Data ); //8X16 Abreak ;case 0x3cf80:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 26 + BaseAdd, 16, S1YDZ_Data ); //8X16 Fbreak ;case 0x3c2c0:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 34 + BaseAdd + 2, 32, S1YDZ_Data ); //16X16 Arialbreak ;case 0x3d580:S1Y_rdat_bat( ( ASCIICode - 0x20 ) * 34 + BaseAdd + 2, 32, S1YDZ_Data ); //16X16 Tbreak ;default:break;}return 1;}else{return 0;}}/***************************************************16 点GB2312 标准点阵字库参数说明:GBCode表示汉字内码。MSB 表示汉字内码GBCode 的高8bits。LSB 表示汉字内码GBCode 的低8bits。Address 表示汉字或ASCII字符点阵在芯片中的字节地址。BaseAdd:说明点阵数据在字库芯片中的起始地址。r_dat_bat 是读点阵数据函数。DZ_Data是保存读出的点阵数据的数组。*****************************************************/void S1Y_gt16_GetData( u8 MSB, u8 LSB, u8* S1YDZ_Data ){u32 temp = ( MSB - 0xB0 ) * 94 + LSB - 0xA1;u32 BaseAdd = 0, Address;if( MSB == 0xA9 && LSB >= 0xA1 ){Address = ( 282 + ( LSB - 0xA1 ) ) * 32 + BaseAdd;}else if( MSB >= 0xA1 && MSB <= 0xA3 && LSB >= 0xA1 ){Address = ( ( MSB - 0xA1 ) * 94 + ( LSB - 0xA1 ) ) * 32 + BaseAdd;}else if( MSB >= 0xB0 && MSB <= 0xF7 && LSB >= 0xA1 ){Address = ( 846 + temp ) * 32 + BaseAdd;}S1Y_rdat_bat( Address, 32, S1YDZ_Data );}//Address=((MSB-0xB0)*94+(LSB-0xA1)+846)*32+BaseAdd;/****************************************************8X16 点国标扩展字符说明:BaseAdd:说明本套字库在字库芯片中的起始字节地址。FontCode:表示字符内码(16bits).Address:表示字符点阵在芯片中的字节地址。r_dat_bat 是读点阵数据函数。DZ_Data是保存读出的点阵数据的数组。*****************************************************/void S1Y_GB_EXT_816( u16 FontCode, u8* S1YDZ_Data ){u32 BaseAdd = 0x3b7d0, Address;u32 temp1 = ( FontCode - 0xAAA1 );u32 temp2 = ( FontCode - 0xABA1 + 95 );if( FontCode >= 0xAAA1 && FontCode <= 0xAAFE ){Address = temp1 * 16 + BaseAdd;}else if( FontCode >= 0xABA1 && FontCode <= 0xABC0 ){Address = temp2 * 16 + BaseAdd;}S1Y_rdat_bat( Address, 16, S1YDZ_Data );}/****************************************************从字库中读数据函数说明:Address : 表示字符点阵在芯片中的字节地址。byte_long: 是读点阵数据字节数。*p_arr : 是保存读出的点阵数据的数组。*****************************************************/u8 S1Y_rdat_bat( u32 address, u8 byte_long, u8* p_arr ){unsigned int j = 0;S1Y_CS_L;S1Y_SendByte( address );for( j = 0; j < byte_long; j++ ){p_arr[j] = S1Y_ReadByte();}S1Y_CS_H;return p_arr[0];}void S1Y_SendByte( u32 cmd ){u8 i;cmd = cmd | 0x03000000;for( i = 0; i < 32; i++ ){S1Y_CLK_L;if( cmd & 0x80000000 ){S1Y_SI_H;}else{S1Y_SI_L;}S1Y_CLK_H;cmd = cmd << 1;}}u8 S1Y_ReadByte( void ){u8 i;u8 dat = 0;S1Y_CLK_H;for( i = 0; i < 8; i++ ){S1Y_CLK_L;dat = dat << 1;if( S1Y_SO ){dat = dat | 0x01;}else{dat &= 0xfe;}S1Y_CLK_H ;}return dat;}//-------------------------------------分割线---------------------------------//.h 文件#ifndef _GT20L16S1Y_H_#define _GT20L16S1Y_H_void S1Y_SendByte(u32 cmd);u8 S1Y_ReadByte(void);u8 S1Y_rdat_bat(u32 address,u8 byte_long,u8 *p_arr);u8 S1Y_ASCII_GetData(u8 ASCIICode,u32 BaseAdd,u8 *S1YDZ_Data);void S1Y_gt16_GetData (u8 MSB,u8 LSB,u8 *S1YDZ_Data);void S1Y_GB_EXT_816(u16 FontCode,u8 *S1YDZ_Data);void GT20L16_init(void);#endif
OLED显示就比较简单了,显示任意汉字字符串,也折腾了我几根头发,下面也贴出来分享一下:
// .c文件#include "oled.h"#include "oledfont.h"#include "GT20L16S1Y.h"//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 ... 127void delay_ms( unsigned int ms ){unsigned int a;while( ms ){a = 1800;while( a-- );ms--;}return;}//反显函数void OLED_ColorTurn( u8 i ){if( i == 0 ){OLED_WR_Byte( 0xA6, OLED_CMD ); //正常显示}if( i == 1 ){OLED_WR_Byte( 0xA7, OLED_CMD ); //反色显示}}//屏幕旋转180度void OLED_DisplayTurn( u8 i ){if( i == 0 ){OLED_WR_Byte( 0xC8, OLED_CMD ); //正常显示OLED_WR_Byte( 0xA1, OLED_CMD );}if( i == 1 ){OLED_WR_Byte( 0xC0, OLED_CMD ); //反转显示OLED_WR_Byte( 0xA0, OLED_CMD );}}//延时void IIC_delay( void ){u8 t = 1;while( t-- );}//起始信号void I2C_Start( void ){OLED_SDA_Set();OLED_SCL_Set();IIC_delay();OLED_SDA_Clr();IIC_delay();OLED_SCL_Clr();}//结束信号void I2C_Stop( void ){OLED_SDA_Clr();OLED_SCL_Set();IIC_delay();OLED_SDA_Set();}//等待信号响应void I2C_WaitAck( void ) //测数据信号的电平{OLED_SDA_Set();IIC_delay();OLED_SCL_Set();IIC_delay();OLED_SCL_Clr();IIC_delay();}//写入一个字节void Send_Byte( u8 dat ){u8 i;for( i = 0; i < 8; i++ ){OLED_SCL_Clr();//将时钟信号设置为低电平if( dat & 0x80 ) //将dat的8位从最高位依次写入{OLED_SDA_Set();}else{OLED_SDA_Clr();}IIC_delay();OLED_SCL_Set();IIC_delay();OLED_SCL_Clr();dat <<= 1;}}//发送一个字节//向SSD1306写入一个字节。//mode:数据/命令标志 0,表示命令;1,表示数据;void OLED_WR_Byte( u8 dat, u8 mode ){I2C_Start();Send_Byte( 0x78 );I2C_WaitAck();if( mode ){Send_Byte( 0x40 );}else{Send_Byte( 0x00 );}I2C_WaitAck();Send_Byte( dat );I2C_WaitAck();I2C_Stop();}//坐标设置void OLED_Set_Pos( u8 x, u8 y ){OLED_WR_Byte( 0xb0 + y, OLED_CMD );OLED_WR_Byte( ( ( x & 0xf0 ) >> 4 ) | 0x10, OLED_CMD );OLED_WR_Byte( ( x & 0x0f ), OLED_CMD );}//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 ONOLED_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 OFFOLED_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 ){u8 i, n;for( i = 0; i < 4; 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( 0, OLED_DATA );}} //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//sizey:选择字体 6x8 8x16void OLED_ShowChar( u8 x, u8 y, u8 chr, u8 sizey ){u8 c = 0, sizex = sizey / 2;u16 i = 0, size1;if( sizey == 8 ){size1 = 6;}else{size1 = ( sizey / 8 + ( ( sizey % 8 ) ? 1 : 0 ) ) * ( sizey / 2 );}c = chr - ' '; //得到偏移后的值OLED_Set_Pos( x, y );for( i = 0; i < size1; i++ ){if( i % sizex == 0 && sizey != 8 ){OLED_Set_Pos( x, y++ );}if( sizey == 8 ){OLED_WR_Byte( asc2_0806[c][i], OLED_DATA ); //6X8字号}else if( sizey == 16 ){OLED_WR_Byte( asc2_1608[c][i], OLED_DATA ); //8x16字号}// else if(sizey==xx) OLED_WR_Byte(asc2_xxxx[c][i],OLED_DATA);//用户添加字号else{return;}}}//m^n函数u32 oled_pow( u8 m, u8 n ){u32 result = 1;while( n-- ){result *= m;}return result;}//显示数字//x,y :起点坐标//num:要显示的数字//len :数字的位数//sizey:字体大小void OLED_ShowNum( u8 x, u8 y, u32 num, u8 len, u8 sizey ){u8 t, temp, m = 0;u8 enshow = 0;if( sizey == 8 ){m = 2;}for( t = 0; t < len; t++ ){temp = ( num / oled_pow( 10, len - t - 1 ) ) % 10;if( enshow == 0 && t < ( len - 1 ) ){if( temp == 0 ){OLED_ShowChar( x + ( sizey / 2 + m )*t, y, ' ', sizey );continue;}else{enshow = 1;}}OLED_ShowChar( x + ( sizey / 2 + m )*t, y, temp + '0', sizey );}}//显示一个字符号串void OLED_ShowString( u8 x, u8 y, u8* chr, u8 sizey ){u8 j = 0;while( chr[j] != '\0' ){OLED_ShowChar( x, y, chr[j++], sizey );if( sizey == 8 ){x += 6;}else{x += sizey / 2;}}}//显示汉字void OLED_ShowChinese( u8 x, u8 y, u8 *temp, u8 sizey ){u16 i, size1 = ( sizey / 8 + ( ( sizey % 8 ) ? 1 : 0 ) ) * sizey;for( i = 0; i < size1; i++ ){if( i % sizey == 0 ){OLED_Set_Pos( x, y++ );}if( sizey == 16 ){OLED_WR_Byte( temp[i], OLED_DATA ); //16x16字号}// else if(sizey==xx) OLED_WR_Byte(xxx[c][i],OLED_DATA);//用户添加字号else{return;}}}//----------------------------------------------------------//显示一个gb2312汉字(从字库读数据)void OLED_ShowGB2312(unsigned char x,unsigned char y,unsigned char textH,unsigned char textL){unsigned char fontbuf[32];S1Y_gt16_GetData(textH,textL,fontbuf);OLED_ShowChinese( x, y, fontbuf, 16 );// OLED_Set_Pos(x,y);// for(t=0;t<16;t++)// OLED_WR_Byte(fontbuf[t],OLED_DATA);// OLED_Set_Pos(x,y+1);// for(t=0;t<16;t++)// OLED_WR_Byte(fontbuf[t+16],OLED_DATA);}void OLED_ShowStr(unsigned char x,unsigned char y,unsigned char* text){unsigned char i=0;while((text[i]>0x00)){if(((text[i]>=0xb0) &&(text[i]<=0xf7))&&(text[i+1]>=0xa1)){OLED_ShowGB2312(x,y,text[i],text[i+1]);i+=2;x+=16;}else if((text[i]>=0x20) && (text[i]<=0x7e)){//OLED_ShowASCII(x,y,text[i]);i+=1;x+=8;}elsei++;}}//--------------------------------------------------------------------//显示图片//x,y显示坐标//sizex,sizey,图片长宽//BMP:要显示的图片void OLED_DrawBMP( u8 x, u8 y, u8 sizex, u8 sizey, u8 BMP[] ){u16 j = 0;u8 i, m;sizey = sizey / 8 + ( ( sizey % 8 ) ? 1 : 0 );for( i = 0; i < sizey; i++ ){OLED_Set_Pos( x, i + y );for( m = 0; m < sizex; m++ ){OLED_WR_Byte( BMP[j++], OLED_DATA );}}}//初始化void OLED_Init( void ){GPIO_Init( OLED_PORT,OLED_SCL,GPIO_Mode_Out_PP_High_Fast );GPIO_Init( OLED_PORT,OLED_SDA,GPIO_Mode_Out_PP_High_Fast );OLED_WR_Byte( 0xAE, OLED_CMD ); /*display off*/OLED_WR_Byte( 0x00, OLED_CMD ); /*set lower column address*/OLED_WR_Byte( 0x10, OLED_CMD ); /*set higher column address*/OLED_WR_Byte( 0x00, OLED_CMD ); /*set display start line*/OLED_WR_Byte( 0xB0, OLED_CMD ); /*set page address*/OLED_WR_Byte( 0x81, OLED_CMD ); /*contract control*/OLED_WR_Byte( 0xff, OLED_CMD ); /*128*/OLED_WR_Byte( 0xA1, OLED_CMD ); /*set segment remap*/OLED_WR_Byte( 0xA6, OLED_CMD ); /*normal / reverse*/OLED_WR_Byte( 0xA8, OLED_CMD ); /*multiplex ratio*/OLED_WR_Byte( 0x1F, OLED_CMD ); /*duty = 1/32*/OLED_WR_Byte( 0xC8, OLED_CMD ); /*Com scan direction*/OLED_WR_Byte( 0xD3, OLED_CMD ); /*set display offset*/OLED_WR_Byte( 0x00, OLED_CMD );OLED_WR_Byte( 0xD5, OLED_CMD ); /*set osc division*/OLED_WR_Byte( 0x80, OLED_CMD );OLED_WR_Byte( 0xD9, OLED_CMD ); /*set pre-charge period*/OLED_WR_Byte( 0x1f, OLED_CMD );OLED_WR_Byte( 0xDA, OLED_CMD ); /*set COM pins*/OLED_WR_Byte( 0x00, OLED_CMD );OLED_WR_Byte( 0xdb, OLED_CMD ); /*set vcomh*/OLED_WR_Byte( 0x40, OLED_CMD );OLED_WR_Byte( 0x8d, OLED_CMD ); /*set charge pump enable*/OLED_WR_Byte( 0x14, OLED_CMD );OLED_Clear();OLED_WR_Byte( 0xAF, OLED_CMD ); /*display ON*/}//-----------------------------------分割线------------------------------------------// .h文件#ifndef __OLED_H#define __OLED_H#include "stm8l15x.h"//STM8L051/151等系列共用库函数#define u8 unsigned char#define u16 unsigned int#define u32 unsigned int#define OLED_CMD 0//写命令#define OLED_DATA 1//写数据#define OLED_PORT GPIOC//SCL老板子线://#define OLED_SCL GPIO_Pin_1//SCL//#define OLED_SDA GPIO_Pin_0//SDA// 新板子线:#define OLED_SCL GPIO_Pin_0//SCL#define OLED_SDA GPIO_Pin_1//SDA//-----------------OLED端口定义----------------#define OLED_SCL_Clr() GPIO_ResetBits(OLED_PORT, OLED_SCL)//SCL IIC接口的数据信号#define OLED_SCL_Set() GPIO_SetBits(OLED_PORT, OLED_SCL)#define OLED_SDA_Clr() GPIO_ResetBits(OLED_PORT, OLED_SDA )//SDA IIC接口的时钟信号#define OLED_SDA_Set() GPIO_SetBits(OLED_PORT, OLED_SDA )//--------------------------------------------------//OLED控制用函数void delay_ms(unsigned int ms);void OLED_ColorTurn(u8 i);void OLED_DisplayTurn(u8 i);void OLED_WR_Byte(u8 dat,u8 cmd);void OLED_Set_Pos(u8 x, u8 y);void OLED_Display_On(void);void OLED_Display_Off(void);void OLED_Clear(void);void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 sizey);u32 oled_pow(u8 m,u8 n);void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 sizey);void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 sizey);//void OLED_ShowChinese(u8 x,u8 y,u8 no,u8 sizey);void OLED_ShowChinese( u8 x, u8 y, u8 *temp, u8 sizey );void OLED_DrawBMP(u8 x,u8 y,u8 sizex, u8 sizey,u8 BMP[]);void OLED_Init(void);void OLED_ShowStr(unsigned char x,unsigned char y,unsigned char* text);#endif
最后是调用过程伪代码:
// 调用显示任意汉字字符串伪代码段void main(void){if(key.code == true){OLED_Clear();OLED_ShowStr( 0, 0, tab[HZ] );// tab[]里面存放的是汉字字符串,例如:"华温冷链巴拉巴拉"Delay( 100 );}}
最后的最后,刚忙完,写博客的时候有点累,有任何不明白的地方,欢迎一起探讨 QQ741684134。PS:遇到很多网友找我聊很基础的单片机应用问题,请自行百度,因为实在很忙。
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