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TMS320F28035的ADC

Other Parts Discussed in Thread: TMS320F28035

剛使用TMS320F28035,執行Example_2803xAdcSoc的範例程式

發現連續讀取ADC的值會飄,請問這是正常的嗎?(供給ADC的電壓穩定)

PMBusSlave_DummyCommand unknown identifier not found: PMBusSlave_DummyCommand
Voltage1 unsigned short[10] [204,222,210,216,220...] 0x00008E0C@Data
[0] unsigned short 204 0x00008E0C@Data
[1] unsigned short 222 0x00008E0D@Data
[2] unsigned short 210 0x00008E0E@Data
[3] unsigned short 216 0x00008E0F@Data
[4] unsigned short 220 0x00008E10@Data
[5] unsigned short 219 0x00008E11@Data
[6] unsigned short 214 0x00008E12@Data
[7] unsigned short 212 0x00008E13@Data
[8] unsigned short 210 0x00008E14@Data
[9] unsigned short 217 0x00008E15@Data
Voltage2 unsigned short[10] [411,419,408,405,407...] 0x00008E02@Data
[0] unsigned short 411 0x00008E02@Data
[1] unsigned short 419 0x00008E03@Data
[2] unsigned short 408 0x00008E04@Data
[3] unsigned short 405 0x00008E05@Data
[4] unsigned short 407 0x00008E06@Data
[5] unsigned short 416 0x00008E07@Data
[6] unsigned short 412 0x00008E08@Data
[7] unsigned short 415 0x00008E09@Data
[8] unsigned short 402 0x00008E0A@Data
[9] unsigned short 404 0x00008E0B@Data
Sum unknown identifier not found: Sum
Add new expression

  • 请问您的参考电压是什么?ADC测量会有一定的误差,您可以参考数据手册

    6.9.2.1.3 On-Chip Analog-to-Digital Converter (ADC) Electrical Data/Timing

    Overall gain error with internal reference –60 60 LSB
    Overall gain error with external reference –40 40 LSB