刚开始也不行，我就听了一会儿歌曲，又重新选择配置了一次，烧录后，听个歌，然后一看，好了。
论坛的几位兄弟快来看看。
void OLED_Write_cmd(uint8_t cmd)
{
// HAL_I2C_Mem_Write(&hi2c2, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT, &cmd, 1, 0x100);
/*
IIC_Start();
Write_IIC_Byte(0x78); //D/C#=0; R/W#=0
IIC_Wait_Ack();
Write_IIC_Byte(0x00); //write cmd
IIC_Wait_Ack();
Write_IIC_Byte(cmd);
IIC_Wait_Ack();
IIC_Stop();
*/
uint8_t cmd2[2];
cmd2[0] = 0x00;
cmd2[1] = cmd;
bool flag = 0;
flag = I2C1_Write(0x3C, cmd2, 2);
if(flag == true) LED_SetLow();
else LED_SetHigh();
}
void OLED_Write_data(uint8_t data)
{
// HAL_I2C_Mem_Write(&hi2c2, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT, &data, 1, 0x100);
/*
IIC_Start();
Write_IIC_Byte(0x78); //D/C#=0; R/W#=0
IIC_Wait_Ack();
Write_IIC_Byte(0x40); //write data
IIC_Wait_Ack();
Write_IIC_Byte(data);
IIC_Wait_Ack();
IIC_Stop();
*/
uint8_t data2[2];
data2[0] = 0x40;
data2[1] = data;
I2C1_Write(0x3C, data2, 2);
}
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