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ADS1248 AD读值问题。

Other Parts Discussed in Thread: ADS1248

用单片机硬件通信ADS1248 对寄存器可操作,读写均正确。只能偶尔读到AD的值,用示波器测量各引脚单次读值时START 脚有100us的上升沿脉冲,连续读值时START为高电平,CS口始终为低电平,RESET脚始终为高电平,但不论连续还是单次DRDY脚用示波器看基本都一直为高电平,没有负跳变。求解。

寄存器配置如下:

IDC0 0x00

MUX1 0x00

MUX0  0x01

SYS0 0x08