请问使用RDATAC指令后,ADS131E04传送的数据格式以及内容是怎样的,数据手册是按照ADS131E08为例来说明有27个BYTE,不知道ADS131E04是不是只用15个BYTE?
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下图是 ADS131E0x的通信协议
For the ADS131E0x with 32- and 64-kSPS data rates, the number of data outputs is [(24 status bits + 16 bits × 8 channels) = 152 bits].
However, the sequence of channel outputs remains the same. The last four (ADS131E04) or two (ADS131E06) channel outputs shown in Figure 29 are '0's.
前面24bits是状态寄存器值,格式如下。第一个数据,就0xC。也就是1100 B。FAULT_STATP值为0x0F,FAULT_STATN值为0x0F。请你参照datasheet中40页中详细说明。
24 status bits is (1100 +FAULT_STATP+FAULT_STATN+GPIO[7:4]).