Function ssd1306_write_mult_reg

bsp/hc32/tests/test_soft_i2c.c:101–130

write_reg ssd1306 basic opertion */

/* write_reg ssd1306 basic opertion */
static void ssd1306_write_mult_reg(struct rt_i2c_bus_device *i2c_dev,
                                   rt_bool_t is_write_cmd, rt_uint8_t len, rt_uint8_t *data
                                   /*rt_uint8_t data*/)
{
    rt_uint8_t *buff = NULL;
    struct rt_i2c_msg msgs;

    msgs.addr = SSD1306_ADDR;
    msgs.flags = RT_I2C_WR;
    buff = (rt_uint8_t *)rt_malloc((len + 1) * sizeof(rt_uint8_t));

    if (RT_TRUE == is_write_cmd)
    {
        buff[0] = SSD1306_MD_CMD;
    }
    else
    {
        buff[0] = SSD1306_MD_DATA;
    }
    rt_memcpy(buff + 1, data, len);
    msgs.buf = buff;
    msgs.len = len + 1;

    if (1 != rt_i2c_transfer(i2c_dev, &msgs, 1))
    {
        rt_kprintf("failed to send cmd\n");
    }
    rt_free(buff);
    buff = NULL;
}

static int sw_i2c_sample(int argc, char *argv[])
{