STM32L151C8用硬件SPI驱动LCD,驱动芯片是ST7735S,0.96寸,屏一直是花的,
大神们帮我看看到底哪里出了问题
[mw_shl_code=c,true]SPI_HandleTypeDef SPI1_Handler;
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
LCD_Gpio_Init();
MX_SPI1_Init();
LCD_Init();
HAL_Delay(100);
LCD_Clear(WHITE);
while(1)
{
}
}
void MX_SPI1_Init(void)
{
__HAL_RCC_SPI1_CLK_ENABLE(); //使能SPI1时钟
SPI1_Handler.Instance = SPI1;
SPI1_Handler.Init.Mode = SPI_MODE_MASTER;
SPI1_Handler.Init.Direction = SPI_DIRECTION_2LINES;
SPI1_Handler.Init.DataSize = SPI_DATASIZE_8BIT;
SPI1_Handler.Init.CLKPolarity = SPI_POLARITY_LOW;
SPI1_Handler.Init.CLKPhase = SPI_PHASE_1EDGE;
SPI1_Handler.Init.NSS = SPI_NSS_SOFT;
SPI1_Handler.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
SPI1_Handler.Init.FirstBit = SPI_FIRSTBIT_MSB;
SPI1_Handler.Init.TIMode = SPI_TIMODE_DISABLE;
SPI1_Handler.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
SPI1_Handler.Init.CRCPolynomial = 7;
HAL_SPI_Init(&SPI1_Handler); //初始化SPI1
__HAL_SPI_ENABLE(&SPI1_Handler); //使能SPI1
}
void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_7|GPIO_PIN_5, GPIO_PIN_SET);
GPIO_InitStruct.Pin=GPIO_PIN_5|GPIO_PIN_7;
GPIO_InitStruct.Mode=GPIO_MODE_AF_PP; //复用推挽输出
GPIO_InitStruct.Pull=GPIO_PULLUP; //上拉
GPIO_InitStruct.Speed=GPIO_SPEED_FREQ_VERY_HIGH; //50Mhz
GPIO_InitStruct.Alternate=GPIO_AF5_SPI1; //PA5 7复用为SPI1
HAL_GPIO_Init(GPIOA,&GPIO_InitStruct);
}
/**
* TxData 要写入的字节
* size 写入字节的长度
*/
void LCD_SPI_Send(u8 *TxData,u16 size)
{
HAL_SPI_Transmit(&SPI1_Handler,TxData,size,1000);
}
void LCD_Gpio_Init(void)
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_GPIOA_CLK_ENABLE();
//LCD_PWR: PA6
//LCD_RST: PA2
//LCD_DC: PA4
//LCD_CS: PA3
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_6|GPIO_PIN_2|GPIO_PIN_3 |GPIO_PIN_4, GPIO_PIN_SET);
/*Configure GPIO pins : PA2 PA3 PA4 PA6 */
GPIO_Initure.Pin = GPIO_PIN_2|GPIO_PIN_6;
GPIO_Initure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_Initure.Pull = GPIO_PULLUP;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_Initure);
/*Configure GPIO pin : PA3 */
GPIO_Initure.Pin = GPIO_PIN_3;
GPIO_Initure.Mode = GPIO_MODE_OUTPUT_OD;
GPIO_Initure.Pull = GPIO_PULLUP;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_Initure);
/*Configure GPIO pin : PA4 */
GPIO_Initure.Pin = GPIO_PIN_4;
GPIO_Initure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_Initure.Pull = GPIO_PULLDOWN;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_Initure);
}
//写命令
void LCD_Write_Cmd(u8 cmd)
{
LCD_DC(0);
LCD_CS(0);
LCD_SPI_Send(&cmd, 1);
LCD_CS(1);
}
//写一个字节
void LCD_Write_Data1(u8 data)
{
LCD_DC(1);
LCD_CS(0);
LCD_SPI_Send(&data, 1);
LCD_CS(1);
}
//写2个字节
void LCD_Write_Data(u8 dat)
{
LCD_DC(1);
LCD_CS(0);
LCD_SPI_Send(&dat, 2);
LCD_CS(1);
}
//设置起点终点坐标
void LCD_Address_Set(u16 x_start, u16 y_start, u16 x_end, u16 y_end)
{
LCD_Write_Cmd(0x2a);//列
LCD_Write_Data(x_start);
LCD_Write_Data(x_end);
LCD_Write_Cmd(0x2b);//行
LCD_Write_Data(y_start);
LCD_Write_Data(y_end);
LCD_Write_Cmd(0x2C);//写入行列
}
//LCD清屏
void LCD_Clear(u16 Color)
{
u16 i,j;
LCD_Address_Set(0,0,LCD_Width-1,LCD_Height-1);
for(i=0;i<LCD_Width;i++)
{
for (j=0;j<LCD_Height;j++)
{
LCD_Write_Data(Color);
}
}
}
//LCD初始化
void LCD_Init(void)
{
LCD_RST(0);
HAL_Delay(20);
LCD_RST(1);
HAL_Delay(20);
LCD_PWR(1);
LCD_Write_Cmd(0x11); //sleep out
HAL_Delay(100);
LCD_Write_Cmd(0x21); //display inverson on
LCD_Write_Cmd(0xB1); //frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);
LCD_Write_Cmd(0xB2);//frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);
LCD_Write_Cmd(0xB3); //frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);
LCD_Write_Cmd(0xB4);//display inversion on
LCD_Write_Data1(0x03);
LCD_Write_Cmd(0xC0);//power control1
LCD_Write_Data1(0x62);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x04);
LCD_Write_Cmd(0xC1);//power control2
LCD_Write_Data1(0xC0);
LCD_Write_Cmd(0xC2);//power control3
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x00);
LCD_Write_Cmd(0xC3);//power control4
LCD_Write_Data1(0x8D);
LCD_Write_Data1(0x6A);
LCD_Write_Cmd(0xC4);//power control5
LCD_Write_Data1(0x8D);
LCD_Write_Data1(0xEE);
LCD_Write_Cmd(0xC5); /*VCOM*/
LCD_Write_Data1(0x0E);
LCD_Write_Cmd(0xE0);//gamma +polarity
LCD_Write_Data1(0x10);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x07);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x07);
LCD_Write_Data1(0x0A);
LCD_Write_Data1(0x12);
LCD_Write_Data1(0x27);
LCD_Write_Data1(0x37);
LCD_Write_Data1(0x00);
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x10);
LCD_Write_Cmd(0xE1);//gamma -polarity
LCD_Write_Data1(0x10);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x0F);
LCD_Write_Data1(0x06);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x08);
LCD_Write_Data1(0x0A);
LCD_Write_Data1(0x13);
LCD_Write_Data1(0x26);
LCD_Write_Data1(0x36);
LCD_Write_Data1(0x00);
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x10);
LCD_Write_Cmd(0x3A); //interface pixel format
LCD_Write_Data1(0x05);
LCD_Write_Cmd(0x36);//mamory data access control
LCD_Write_Data1(0x78);
LCD_Write_Cmd(0x29); //display on
}[/mw_shl_code]
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硬件BS1和BS2有没接地
你可以参考论坛大佬做过的
http://www.openedv.com/forum.php ... ght=%D3%B2%BC%FESPI
好的,多谢多谢~~~
是OLED屏上有
改好了,多谢大佬
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