STM32的int8_t 是返回不了负数的

[quan1229]

int8_t ee_24clxx_init(struct i2c_dev_device *i2c_bus)
{
if (NULL == i2c_bus)
{
return -1;
}
ee_i2c_dev = i2c_bus;

return 0;

}

你可以打印试试：printf("%d \r\n",sizeof(-1));