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关于TI杯推荐芯片ADS1118驱动程序的疑问

Other Parts Discussed in Thread: ADS1118, MSP430F149, ADS131E04

ADS1118是上电之后,先选中芯片,将CS拉低,直接送配置字,然后拉高CS。再就是直接读数据?

SPI_CS_Low(); //拉低CS
SPI_Write_byte(0x85);
SPI_Write_byte(0x83);
SPI_CS_High(); //拉高CS
SPI_CS_Low();
Data_H=SPI_Rec_byte(); //读高字节
Data_L=SPI_Rec_byte();// 读低字节
SPI_CS_High();
Data|=Data_H;
Data=Data<<8;
Data|=Data_L;可以不?

还有,ADS1118默认上电状态,是低功耗模式,那么怎么启动转换呢?还有,是上电后立马就可以对ADS1118写配置字吗,而且只要写入就一定是写到控制寄存器吗?在读数据前有没有什么标志?