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STM32C8T6驅(qū)動(dòng)st7735s顯示屏，我將原來(lái)的PA0-PA5引腳，換成PB4-PB9引腳后，顯示屏就一直白的，連測(cè)試文字都沒(méi)有。麻煩各位大佬幫小弟看看問(wèn)題出在哪里，鞠躬萬(wàn)分感謝！
#include "lcd_init.h"
#include "delay.h"
void LCD_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); // 使能B端口時(shí)鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; // 推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; // 速度50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); // 初始化GPIOB
GPIO_SetBits(GPIOB, GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9);
}
/******************************************************************************
函數(shù)說(shuō)明：LCD串行數(shù)據(jù)寫入函數(shù)
入口數(shù)據(jù)：dat 要寫入的串行數(shù)據(jù)
返回值： 無(wú)
******************************************************************************/
void LCD_Writ_Bus(u8 dat)
{
u8 i;
LCD_CS_Clr();
for(i=0;i<8;i++)
{
LCD_SCLK_Clr();
if(dat & 0x80)
{
LCD_MOSI_Set();
}
else
{
LCD_MOSI_Clr();
}
LCD_SCLK_Set();
dat <<=1;
}
LCD_SCLK_Clr();
LCD_CS_Set();
}
/******************************************************************************
函數(shù)說(shuō)明：LCD寫入數(shù)據(jù)
入口數(shù)據(jù)：dat 寫入的數(shù)據(jù)
返回值： 無(wú)
******************************************************************************/
void LCD_WR_DATA8(u8 dat)
{
LCD_Writ_Bus(dat);
}
/******************************************************************************
函數(shù)說(shuō)明：LCD寫入數(shù)據(jù)
入口數(shù)據(jù)：dat 寫入的數(shù)據(jù)
返回值： 無(wú)
******************************************************************************/
void LCD_WR_DATA(u16 dat)
{
LCD_Writ_Bus(dat>>8);
LCD_Writ_Bus(dat);
}
/******************************************************************************
函數(shù)說(shuō)明：LCD寫入命令
入口數(shù)據(jù)：dat 寫入的命令
返回值： 無(wú)
******************************************************************************/
void LCD_WR_REG(u8 dat)
{
LCD_DC_Clr();//寫命令
LCD_Writ_Bus(dat);
LCD_DC_Set();//寫數(shù)據(jù)
}
/******************************************************************************
函數(shù)說(shuō)明：設(shè)置起始和結(jié)束地址
入口數(shù)據(jù)：x1,x2 設(shè)置列的起始和結(jié)束地址
y1,y2 設(shè)置行的起始和結(jié)束地址
返回值： 無(wú)
******************************************************************************/
void LCD_Address_Set(u16 x1,u16 y1,u16 x2,u16 y2)
{
if(USE_HORIZONTAL==0)
{
LCD_WR_REG(0x2a);//列地址設(shè)置
LCD_WR_DATA(x1+2);
LCD_WR_DATA(x2+2);
LCD_WR_REG(0x2b);//行地址設(shè)置
LCD_WR_DATA(y1+1);
LCD_WR_DATA(y2+1);
LCD_WR_REG(0x2c);//儲(chǔ)存器寫
}
else if(USE_HORIZONTAL==1)
{
LCD_WR_REG(0x2a);//列地址設(shè)置
LCD_WR_DATA(x1+2);
LCD_WR_DATA(x2+2);
LCD_WR_REG(0x2b);//行地址設(shè)置
LCD_WR_DATA(y1+3);
LCD_WR_DATA(y2+3);
LCD_WR_REG(0x2c);//儲(chǔ)存器寫
}
else if(USE_HORIZONTAL==2)
{
LCD_WR_REG(0x2a);//列地址設(shè)置
LCD_WR_DATA(x1+1);
LCD_WR_DATA(x2+1);
LCD_WR_REG(0x2b);//行地址設(shè)置
LCD_WR_DATA(y1+2);
LCD_WR_DATA(y2+2);
LCD_WR_REG(0x2c);//儲(chǔ)存器寫
}
else
{
LCD_WR_REG(0x2a);//列地址設(shè)置
LCD_WR_DATA(x1+3);
LCD_WR_DATA(x2+3);
LCD_WR_REG(0x2b);//行地址設(shè)置
LCD_WR_DATA(y1+2);
LCD_WR_DATA(y2+2);
LCD_WR_REG(0x2c);//儲(chǔ)存器寫
}
}
void LCD_Init(void)
{
LCD_GPIO_Init();//初始化GPIO
LCD_RES_Clr();//復(fù)位
delay_ms(100);
LCD_RES_Set();
delay_ms(100);
LCD_BLK_Set();//打開背光
delay_ms(100);
LCD_WR_REG(0x11); //Sleep out
delay_ms(120); //Delay 120ms
//------------------------------------ST7735S Frame rate-------------------------------------------------//
LCD_WR_REG(0xB1); //Frame rate 80Hz
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x35);
LCD_WR_DATA8(0x36);
LCD_WR_REG(0xB2); //Frame rate 80Hz
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x35);
LCD_WR_DATA8(0x36);
LCD_WR_REG(0xB3); //Frame rate 80Hz
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x35);
LCD_WR_DATA8(0x36);
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x35);
LCD_WR_DATA8(0x36);
//------------------------------------End ST7735S Frame rate-------------------------------------------//
LCD_WR_REG(0xB4); //Dot inversion
LCD_WR_DATA8(0x03);
//------------------------------------ST7735S Power Sequence-----------------------------------------//
LCD_WR_REG(0xC0);
LCD_WR_DATA8(0xA2);
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x84);
LCD_WR_REG(0xC1);
LCD_WR_DATA8(0xC5);
LCD_WR_REG(0xC2);
LCD_WR_DATA8(0x0D);
LCD_WR_DATA8(0x00);
LCD_WR_REG(0xC3);
LCD_WR_DATA8(0x8D);
LCD_WR_DATA8(0x2A);
LCD_WR_REG(0xC4);
LCD_WR_DATA8(0x8D);
LCD_WR_DATA8(0xEE);
//---------------------------------End ST7735S Power Sequence---------------------------------------//
LCD_WR_REG(0xC5); //VCOM
LCD_WR_DATA8(0x0a);
LCD_WR_REG(0x36);
if(USE_HORIZONTAL==0)LCD_WR_DATA8(0x08);
else if(USE_HORIZONTAL==1)LCD_WR_DATA8(0xC8);
else if(USE_HORIZONTAL==2)LCD_WR_DATA8(0x78);
else LCD_WR_DATA8(0xA8);
//------------------------------------ST7735S Gamma Sequence-----------------------------------------//
LCD_WR_REG(0XE0);
LCD_WR_DATA8(0x12);
LCD_WR_DATA8(0x1C);
LCD_WR_DATA8(0x10);
LCD_WR_DATA8(0x18);
LCD_WR_DATA8(0x33);
LCD_WR_DATA8(0x2C);
LCD_WR_DATA8(0x25);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x27);
LCD_WR_DATA8(0x2F);
LCD_WR_DATA8(0x3C);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x10);
LCD_WR_REG(0XE1);
LCD_WR_DATA8(0x12);
LCD_WR_DATA8(0x1C);
LCD_WR_DATA8(0x10);
LCD_WR_DATA8(0x18);
LCD_WR_DATA8(0x2D);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x23);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x26);
LCD_WR_DATA8(0x2F);
LCD_WR_DATA8(0x3B);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0x10);
//------------------------------------End ST7735S Gamma Sequence-----------------------------------------//
LCD_WR_REG(0x3A); //65k mode
LCD_WR_DATA8(0x05);
LCD_WR_REG(0x29); //Display on
}
#ifndef __LCD_INIT_H
#define __LCD_INIT_H
//-----------------LCD端口定義----------------
#define LCD_SCLK_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_4) // SCL = SCLK
#define LCD_SCLK_Set() GPIO_SetBits(GPIOB, GPIO_Pin_4)
#define LCD_MOSI_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_5) // SDA = MOSI
#define LCD_MOSI_Set() GPIO_SetBits(GPIOB, GPIO_Pin_5)
#define LCD_RES_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_6) // RES
#define LCD_RES_Set() GPIO_SetBits(GPIOB, GPIO_Pin_6)
#define LCD_DC_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_7) // DC
#define LCD_DC_Set() GPIO_SetBits(GPIOB, GPIO_Pin_7)
#define LCD_CS_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_8) // CS
#define LCD_CS_Set() GPIO_SetBits(GPIOB, GPIO_Pin_8)
#define LCD_BLK_Clr() GPIO_ResetBits(GPIOB, GPIO_Pin_9) // BLK
#define LCD_BLK_Set() GPIO_SetBits(GPIOB, GPIO_Pin_9)
int main(void)
{
// float t=0;
delay_init();
LCD_Init();//LCD初始化
LCD_Fill(0,0,LCD_W,LCD_H,WHITE);
while(1)
{
LCD_ShowChinese(0,36,"中文",RED,WHITE,16,0);
// LCD_ShowPicture(0,0,128,128,gImage_1);
LCD_ShowString(0,18,"Welcome!",RED,WHITE,16,0);
}
}
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