使用stm32f103-atk-nano BSP做的工程，修改为STM32F103RC。
使用裸机程序测试，功能正常，可以读写LCD液晶屏字库的字母、字符、数字和汉字。代码如下：
//---------------------------LCD端口定义-------------------------- #define LCD_SCK PBout(15) //对应液晶屏的接口“SCLK”(即：串行时钟输入）#define LCD_SDA PCout(6) //对应液晶屏的接口“SDA”(即：串行数据输入） #define LCD_CS PBout(12) //对应液晶屏的接口“CS”(即：片选） #define LCD_RST PBout(13) //对应液晶屏的接口“RESET”(即：复位） #define LCD_RS PBout(14) //对应液晶屏的接口“RS”(即：指令/数据寄存器选择）#define Rom_CS PCout(7) // 对应字库IC接口“Rom_CS”(也即：字库IC的CS#，片选）#define Rom_SCK PCout(8) // 对应字库IC接口“Rom_SCK”（也即：字库IC的SCK，串行时钟）#define Rom_OUT PCin(9) // 对应字库IC接口“Rom_OUT”（也即：字库IC的SO ，串行数据输出）#define Rom_IN PAout(8) // 对应字库IC接口“Rom_IN”（也即：字库IC的SI，串行数据输入）void initial_lcd(void){ GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC, ENABLE); //使能PA,B,C端口时钟 （ENABLE开启） GPIO_InitStructure.GPIO_Pin =GPIO_Pin_8; //PA GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin =GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15; //PB GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin =GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_12; //PC GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin =GPIO_Pin_9; //PC GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入 GPIO_Init(GPIOC, &GPIO_InitStructure); LCD_LEDA=0; LCD_RST=0; delay_ms(50); LCD_RST=1; delay_ms(100); transfer_command(0xe2); /*软复位*/ delay_ms(5); transfer_command(0x2c); /*升压步聚1*/ delay_ms(5); transfer_command(0x2e); /*升压步聚2*/ delay_ms(5); transfer_command(0x2f); /*升压步聚3*/ delay_ms(5); transfer_command(0x24); /*粗调对比度，可设置范围0x20～0x27*/ transfer_command(0x81); /*微调对比度*/ transfer_command(0x45); /*0x1a,微调对比度的值，可设置范围0x00～0x3f*/ transfer_command(0xeb); /*1/9偏压比（bias）*/ transfer_command(0xc2); /*行扫描顺序：从上到下*/ transfer_command(0xa0); /*76帧/秒*/ transfer_command(0xaf); /*开显示*/}//***送指令到晶联讯字库IC**void send_command_to_ROM( u8 datu ){ u8 i; for(i=0;i<8;i++ ) { Rom_SCK=0; delay_us(1); if(datu&0x80)Rom_IN = 1; else Rom_IN = 0; datu = datu<<1; Rom_SCK=1; delay_us(1); }}//***从晶联讯字库IC中取汉字或字符数据（1个字节）**static u8 get_data_from_ROM(void){ u8 i; u8 ret_data=0; for(i=0;i<8;i++) { Rom_OUT=1; Rom_SCK=0; delay_us(1); ret_data=ret_data<<1; if( Rom_OUT ) ret_data=ret_data+1; else ret_data=ret_data+0; Rom_SCK=1; delay_us(1); } return(ret_data);}
移植到rtthread 中，代码如下：
/* defined the DIS_CS pin: PB12 */#define DIS_CS_PIN GET_PIN(B, 12)/* defined the DIS_RST pin: PB13 */#define DIS_RST_PIN GET_PIN(B, 13)/* defined the DIS_RS pin: PB14 */#define DIS_RS_PIN GET_PIN(B, 14)/* defined the DIS_SCK pin: PB15 */#define DIS_SCK_PIN GET_PIN(B, 15)/* defined the DIS_SDA pin: PC6 */#define DIS_SDA_PIN GET_PIN(C, 6)/* defined the DIS_LEDA pin: PC12 */#define DIS_LEDA_PIN GET_PIN(C, 12)#define dis_cs(x) ((x) ? (rt_pin_write(DIS_CS_PIN, PIN_HIGH)) : (rt_pin_write(DIS_CS_PIN, PIN_LOW)))#define dis_rst(x) ((x) ? (rt_pin_write(DIS_RST_PIN, PIN_HIGH)) : (rt_pin_write(DIS_RST_PIN, PIN_LOW)))#define dis_rs(x) ((x) ? (rt_pin_write(DIS_RS_PIN, PIN_HIGH)) : (rt_pin_write(DIS_RS_PIN, PIN_LOW)))#define dis_sck(x) ((x) ? (rt_pin_write(DIS_SCK_PIN, PIN_HIGH)) : (rt_pin_write(DIS_SCK_PIN, PIN_LOW)))#define dis_sda(x) ((x) ? (rt_pin_write(DIS_SDA_PIN, PIN_HIGH)) : (rt_pin_write(DIS_SDA_PIN, PIN_LOW)))#define dis_leda(x) ((x) ? (rt_pin_write(DIS_LEDA_PIN, PIN_HIGH)) : (rt_pin_write(DIS_LEDA_PIN, PIN_LOW)))/*字库 IC 接口定义 Rom_CS 就是字库 IC 的 CS#*//* defined the ROM_CS pin: PC7 */#define ROM_CS_PIN GET_PIN(C, 7)/* defined the ROM_SCK pin: PC8 */#define ROM_SCK_PIN GET_PIN(C, 8)/* defined the ROM_OUT pin: PC9 */#define ROM_OUT_PIN GET_PIN(C, 9)/* defined the ROM_IN pin: PA8 */#define ROM_IN_PIN GET_PIN(A, 8)#define rom_cs(x) ((x) ? (rt_pin_write(ROM_CS_PIN, PIN_HIGH)) : (rt_pin_write(ROM_CS_PIN, PIN_LOW)))#define rom_sck(x) ((x) ? (rt_pin_write(ROM_SCK_PIN, PIN_HIGH)) : (rt_pin_write(ROM_SCK_PIN, PIN_LOW)))#define rom_in(x) ((x) ? (rt_pin_write(ROM_IN_PIN, PIN_HIGH)) : (rt_pin_write(ROM_IN_PIN, PIN_LOW)))#define rom_out (rt_pin_read(ROM_OUT_PIN))#define Rom_OUT(x) ((x) ? (rt_pin_write(ROM_OUT_PIN, PIN_HIGH)) : (rt_pin_write(ROM_OUT_PIN, PIN_LOW)))//LCD 模块初始化void initial_lcd(){ rt_pin_mode(DIS_CS_PIN, PIN_MODE_OUTPUT); rt_pin_mode(DIS_RST_PIN, PIN_MODE_OUTPUT); rt_pin_mode(DIS_RS_PIN, PIN_MODE_OUTPUT); rt_pin_mode(DIS_SCK_PIN, PIN_MODE_OUTPUT); rt_pin_mode(DIS_SDA_PIN, PIN_MODE_OUTPUT); rt_pin_mode(DIS_LEDA_PIN, PIN_MODE_OUTPUT); rt_pin_mode(ROM_CS_PIN, PIN_MODE_OUTPUT); rt_pin_mode(ROM_SCK_PIN, PIN_MODE_OUTPUT); rt_pin_mode(ROM_OUT_PIN, PIN_MODE_INPUT_PULLUP); rt_pin_mode(ROM_IN_PIN, PIN_MODE_OUTPUT); /* set DIS_LEDA pin mode to output */ rt_pin_mode(DIS_LEDA_PIN, PIN_MODE_OUTPUT); /*DIS_LEDA test*/ rt_pin_write(DIS_LEDA_PIN, PIN_LOW); dis_rst(0); //低电平复位 rt_thread_mdelay(100); dis_rst(1); //复位完毕 rt_thread_mdelay(100); transfer_command(0xe2); //软复位 rt_thread_mdelay(500); transfer_command(0x2c); /*升压步聚1*/ rt_thread_mdelay(5); transfer_command(0x2e); /*升压步聚2*/ rt_thread_mdelay(5); transfer_command(0x2f); /*升压步聚3*/// transfer_command(0x2f); //打开内部升压 rt_thread_mdelay(500); transfer_command(0x81); //微调对比度 transfer_command(0x45); //微调对比度的值，可设置范围 0x00～0xFF transfer_command(0xeb); //1/9 偏压比（bias） transfer_command(0xc2); //行扫描顺序：从上到下 列扫描顺序：从右到左 transfer_command(0xa0); //76帧/秒 transfer_command(0xaf); //开显示}void dis_delay(uint time){ uint t; for(t=0;t<time;t++) { __nop(); }}//***送指令到晶联讯字库IC**void send_command_to_ROM( uchar datu ){ uchar i; for(i=0;i<8;i++ ) { rom_sck(0); dis_delay(1); if(datu&0x80) rom_in(1); else rom_in(0); datu = datu<<1; rom_sck(1); dis_delay(1); }}/***从晶联讯字库IC中取汉字或字符数据（1个字节）**/static uchar get_data_from_ROM(void){ uchar i; uchar ret_data=0; for(i=0;i<8;i++) { Rom_OUT(1); rom_sck(0); dis_delay(1); ret_data=ret_data<<1; if( rom_out ) ret_data=ret_data+1; else ret_data=ret_data+0; rom_sck(1); dis_delay(1); } return(ret_data);}
移植后问题，汉字不能正常读取显示，哪位大神有相关经验，望指正
思路清晰，但是我一一排查，发现是因为KEIL编译器的问题，把汉字的编码编译错了。