鸿蒙开发板hi3861不能输出高低电平 # CONFIG_I2C_SUPPORT is not setCONFIG_I2C_SUPPORT=y# CONFIG_I2S_SUPPORT is not set# CONFIG_SPI_SUPPORT is not setCONFIG_SPI_SUPPORT=y# CONFIG_DMA_SUPPORT is no
error: conflicting types for 'get_data_from_ROM' error: conflicting types for '***' error: previous implicit declaration of '***' was here 原因一: 没有函数声明,且函数定义在主函数之后; 原因二