Other Parts Discussed in Thread: OPA320
VREFP +2.5V
VREFN -2.5V
VREF通道读出来码值是 3922667 换算成电压是 5V
但是测量通道接入 2.4V电压 读出来码值只有 3798335
按照公式算出来只有 1.2V (3798335 / 0x780000) * 2.5
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配置寄存器为