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参照官网提供的CN0384_cn资料,做了个6通道的热电偶测量,但是调试代码的时候发现,每个通道的测量值都不对,是哪里没有设置好么?
AIN0-AIN11为热电偶通道,AIN12输出500ua、AIN13 AIN14为KTY81-110通道,原理图如下: 寄存器的json配置文件: { "Generic": "AD7124-8", "Registers": [ { "Address": "0x0", "Name": "Status", "Value": "0x0" }, { "Address": "0x1", "Name": "ADC_Control", "Value": "0x584" }, { "Address": "0x2", "Name": "Data", "Value": "0x0" }, { "Address": "0x3", "Name": "IO_Control_1", "Value": "0x840C" }, { "Address": "0x4", "Name": "IO_Control_2", "Value": "0x555" }, { "Address": "0x5", "Name": "ID", "Value": "0x0" }, { "Address": "0x6", "Name": "Error", "Value": "0x0" }, { "Address": "0x7", "Name": "Error_En", "Value": "0x44" }, { "Address": "0x8", "Name": "MCLK_Count", "Value": "0x0" }, { "Address": "0x9", "Name": "Channel_0", "Value": "0x8001" }, { "Address": "0xA", "Name": "Channel_1", "Value": "0x8043" }, { "Address": "0xB", "Name": "Channel_2", "Value": "0x8085" }, { "Address": "0xC", "Name": "Channel_3", "Value": "0x80C7" }, { "Address": "0xD", "Name": "Channel_4", "Value": "0x8109" }, { "Address": "0xE", "Name": "Channel_5", "Value": "0x814B" }, { "Address": "0xF", "Name": "Channel_6", "Value": "0x1" }, { "Address": "0x10", "Name": "Channel_7", "Value": "0x1" }, { "Address": "0x11", "Name": "Channel_8", "Value": "0x1" }, { "Address": "0x12", "Name": "Channel_9", "Value": "0x1" }, { "Address": "0x13", "Name": "Channel_10", "Value": "0x1" }, { "Address": "0x14", "Name": "Channel_11", "Value": "0x1" }, { "Address": "0x15", "Name": "Channel_12", "Value": "0x1" }, { "Address": "0x16", "Name": "Channel_13", "Value": "0x91AE" }, { "Address": "0x17", "Name": "Channel_14", "Value": "0x1" }, { "Address": "0x18", "Name": "Channel_15", "Value": "0x1" }, { "Address": "0x19", "Name": "Config_0", "Value": "0x9F7" }, { "Address": "0x1A", "Name": "Config_1", "Value": "0x9E0" }, { "Address": "0x1B", "Name": "Config_2", "Value": "0x860" }, { "Address": "0x1C", "Name": "Config_3", "Value": "0x860" }, { "Address": "0x1D", "Name": "Config_4", "Value": "0x860" }, { "Address": "0x1E", "Name": "Config_5", "Value": "0x860" }, { "Address": "0x1F", "Name": "Config_6", "Value": "0x860" }, { "Address": "0x20", "Name": "Config_7", "Value": "0x860" }, { "Address": "0x21", "Name": "Filter_0", "Value": "0x60180" }, { "Address": "0x22", "Name": "Filter_1", "Value": "0x60180" }, { "Address": "0x23", "Name": "Filter_2", "Value": "0x60180" }, { "Address": "0x24", "Name": "Filter_3", "Value": "0x60180" }, { "Address": "0x25", "Name": "Filter_4", "Value": "0x60180" }, { "Address": "0x26", "Name": "Filter_5", "Value": "0x60180" }, { "Address": "0x27", "Name": "Filter_6", "Value": "0x60180" }, { "Address": "0x28", "Name": "Filter_7", "Value": "0x60180" }, { "Address": "0x29", "Name": "Offset_0", "Value": "0x800000" }, { "Address": "0x2A", "Name": "Offset_1", "Value": "0x800000" }, { "Address": "0x2B", "Name": "Offset_2", "Value": "0x800000" }, { "Address": "0x2C", "Name": "Offset_3", "Value": "0x800000" }, { "Address": "0x2D", "Name": "Offset_4", "Value": "0x800000" }, { "Address": "0x2E", "Name": "Offset_5", "Value": "0x800000" }, { "Address": "0x2F", "Name": "Offset_6", "Value": "0x800000" }, { "Address": "0x30", "Name": "Offset_7", "Value": "0x800000" }, { "Address": "0x31", "Name": "Gain_0", "Value": "0x500000" }, { "Address": "0x32", "Name": "Gain_1", "Value": "0x500000" }, { "Address": "0x33", "Name": "Gain_2", "Value": "0x500000" }, { "Address": "0x34", "Name": "Gain_3", "Value": "0x500000" }, { "Address": "0x35", "Name": "Gain_4", "Value": "0x500000" }, { "Address": "0x36", "Name": "Gain_5", "Value": "0x500000" }, { "Address": "0x37", "Name": "Gain_6", "Value": "0x500000" }, { "Address": "0x38", "Name": "Gain_7", "Value": "0x500000" } ] } 读取结果如下: |
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24个回答
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深圳王先生 发表于 2019-1-21 22:33 这个32已经改成128了,和寄存器的配置一致,现在的问题是,这个ad值一直在飘,如果让热电偶的温度升高的话,这个AD值就下降。这个要怎么解决? |
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对,这个应该是mv |
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