STM32驱动 LCD1602A 两行黑格

电子控2021

如题： 初始化完后显示的是两行黑格VO通过1K电阻接到GND
供电是5V 信号是3.3V 用的STM32F103C8

代码如下（工程在附件里）：

void BSP_LCD_Init(void)
{
    BSP_LCD1602_0.LCD_DB0_Pinx = LCD_DB0_Pin;
    BSP_LCD1602_0.LCD_DB0_Portx = LCD_DB0_GPIO_Port;
    BSP_LCD1602_0.LCD_DB1_Pinx = LCD_DB1_Pin;
    BSP_LCD1602_0.LCD_DB1_Portx = LCD_DB1_GPIO_Port;
    BSP_LCD1602_0.LCD_DB2_Pinx = LCD_DB2_Pin;
    BSP_LCD1602_0.LCD_DB2_Portx = LCD_DB2_GPIO_Port;
    BSP_LCD1602_0.LCD_DB3_Pinx = LCD_DB3_Pin;
    BSP_LCD1602_0.LCD_DB3_Portx = LCD_DB3_GPIO_Port;
    BSP_LCD1602_0.LCD_DB4_Pinx = LCD_DB4_Pin;
    BSP_LCD1602_0.LCD_DB4_Portx = LCD_DB4_GPIO_Port;
    BSP_LCD1602_0.LCD_DB5_Pinx = LCD_DB5_Pin;
    BSP_LCD1602_0.LCD_DB5_Portx = LCD_DB5_GPIO_Port;
    BSP_LCD1602_0.LCD_DB6_Pinx = LCD_DB6_Pin;
    BSP_LCD1602_0.LCD_DB6_Portx = LCD_DB6_GPIO_Port;
    BSP_LCD1602_0.LCD_DB7_Pinx = LCD_DB7_Pin;
    BSP_LCD1602_0.LCD_DB7_Portx = LCD_DB7_GPIO_Port;
    BSP_LCD1602_0.LCD_RS_Pinx = LCD_RS_Pin;
    BSP_LCD1602_0.LCD_RS_Portx = LCD_RS_GPIO_Port;
    BSP_LCD1602_0.LCD_RW_Pinx = LCD_RW_Pin;
    BSP_LCD1602_0.LCD_RW_Portx = LCD_RW_GPIO_Port;
    BSP_LCD1602_0.LCD_EN_Pinx = LCD_EN_Pin;
    BSP_LCD1602_0.LCD_EN_Portx = LCD_EN_GPIO_Port;

    for (uint8_t i = 0; i < LCD_SUM; i++)
    {
        LCD_Array[i].CMD = 0;
        LCD_Array[i].Data = 0;
        LCD_Array[i].Flag_Enable = 0;
    }

    HAL_Delay(15);
    BSP_LCD_Write_CMD(&BSP_LCD1602_0, 0x38);
    HAL_Delay(5);
    BSP_LCD_Write_CMD(&BSP_LCD1602_0, 0x0c);
    HAL_Delay(5);
    BSP_LCD_Write_CMD(&BSP_LCD1602_0, 0x06);
    HAL_Delay(5);
    BSP_LCD_Write_CMD(&BSP_LCD1602_0, 0x01);
    HAL_Delay(5);
    // BSP_LCD_Write_CMD(&BSP_LCD1602_0, 0x38);
}


void BSP_LCD_Write_CMD(LCD_Conf *LCD_Struct, uint8_t CMD)
{
    LCD_RS_PIN(GPIO_PIN_RESET);
    LCD_RW_PIN(GPIO_PIN_RESET);
    LCD_EN_PIN(GPIO_PIN_RESET);
    LCD_DATA_PIN = CMD;

    HAL_Delay(2);
    LCD_EN_PIN(GPIO_PIN_SET);
    HAL_Delay(2);
    LCD_EN_PIN(GPIO_PIN_RESET);
}

void BSP_LCD_Write_Data(LCD_Conf *LCD_Struct, uint8_t Data)
{
    LCD_RS_PIN(GPIO_PIN_SET);
    LCD_RW_PIN(GPIO_PIN_RESET);
    LCD_EN_PIN(GPIO_PIN_RESET);
    LCD_DATA_PIN = Data;

    HAL_Delay(2);
    LCD_EN_PIN(GPIO_PIN_SET);
    HAL_Delay(2);
    LCD_EN_PIN(GPIO_PIN_RESET);
}

电子控2021

问题解决了 是我没有发送字体
一直以为初始化完是干净的
结果就是有底格
这个贴子就留着当库文件吧

LCD1602A和AT24c02的库
基于STM32CubeMX