SSD1306的I2C驱动程序

尊敬的先生，
I just want to init my OLED with SSD1306 driver , using the i2c demo in peripherals project, however it doesn't work, the i2c channel only send out 0x00 no matter what i change in the code. Please help.

代码：
void demo_i2c_init（void）
{

static const i2c_config cfg = {
.speed = hw_i2c_speed_standard，
.mode = hw_i2c_mode_master，
.ddr_mode = hw_i2c_addressing_7b，
};

hw_i2c_init（hw_i2c1，cfg）;

srand(OS_GET_TICK_COUNT());

if（config_need）{
呃;
i2c_device dev;

dev = ad_i2c_open（SSD1306）;

err = SSD1306_power_on(dev);
如果（错误）{
printf（换行符“错误ssd1306_power_on 0x％x”，错误）;
}

ad_i2c_close（dev）;
config_need = false;
}
}
int ssd1306_power_on（i2c_device dev）
{
//OS_ENTER_CRITICAL_SECTION();
ad_i2c_device_acquire(dev);
SSD1306._write_i(dev,0xAE);
SSD1306._write_i(dev,0x00);
SSD1306_WRITE_I（DEV，0x10）;
SSD1306_WRITE_I（DEV，0x40）;
ssd1306_write_i（dev，0xb0）;
SSD1306_WRITE_I（DEV，0x81）;
SSD1306_WRITE_I（DEV，0xAF）;
SSD1306._write_i(dev,0xA1);
SSD1306_WRITE_I（DEV，0xA6）;
SSD1306_WRITE_I（DEV，0xA8）;
ssd1306_write_i（dev，0x0f）;
SSD1306._write_i(dev,0xC8);
SSD1306_WRITE_I（DEV，0xD3）;
SSD1306._write_i(dev,0x00);
SSD1306._write_i(dev,0xD5);
SSD1306_WRITE_I（DEV，0x80）;
SSD1306._write_i(dev,0xD9);
SSD1306_WRITE_I（DEV，0x22）;
SSD1306_WRITE_I（DEV，0xDA）;
SSD1306_WRITE_I（DEV，0x02）;
SSD1306._write_i(dev,0xdb);
SSD1306_WRITE_I（DEV，0x40）;
SSD1306._write_i(dev,0x8d);
SSD1306_WRITE_I（DEV，0x10）;
SSD1306_WRITE_I（0xAF）;
ad_i2c_device_release（dev）;
//OS_LEAVE_CRITICAL_SECTION();
返回真;
}

static int SSD1306_write_i(i2c_device dev,uint8_t val)
{
uint8_t op [2] = {0x12，val};

返回AD_I2C_WRITE（DEV，OP，SIZEOF（OP））;
}