求问F28335中两个ADC采样结果AdcMirrorFile和AdcRegsFile的区别

只看该作者 · 2018-12-7 09:36

F28335中定义了两个ADC采样结果的储存空间：

ADC_MIRROR  : origin = 0x000B00, length = 0x000010    /* ADC Results register mirror */
...
...
ADC       : origin = 0x007100, length = 0x000020    /* ADC registers */

这两个对应的结构体里都有ADC采样结果：

struct ADC_REGS {
union ADCTRL1_REG    ADCTRL1;    // ADC Control 1
union ADCTRL2_REG    ADCTRL2;    // ADC Control 2
union ADCMAXCONV_REG ADCMAXCONV; // Max conversions
union ADCCHSELSEQ1_REG ADCCHSELSEQ1;  // Channel select sequencing control 1
union ADCCHSELSEQ2_REG ADCCHSELSEQ2;  // Channel select sequencing control 2
union ADCCHSELSEQ3_REG ADCCHSELSEQ3;  // Channel select sequencing control 3
union ADCCHSELSEQ4_REG ADCCHSELSEQ4;  // Channel select sequencing control 4
union ADCASEQSR_REG ADCASEQSR;    // Autosequence status register
    Uint16                ADCRESULT0; // Conversion Result Buffer 0
Uint16                ADCRESULT1; // Conversion Result Buffer 1
Uint16                ADCRESULT2; // Conversion Result Buffer 2
Uint16                ADCRESULT3; // Conversion Result Buffer 3
Uint16                ADCRESULT4; // Conversion Result Buffer 4
Uint16                ADCRESULT5; // Conversion Result Buffer 5
Uint16                ADCRESULT6; // Conversion Result Buffer 6
Uint16                ADCRESULT7; // Conversion Result Buffer 7
Uint16                ADCRESULT8; // Conversion Result Buffer 8
Uint16                ADCRESULT9; // Conversion Result Buffer 9
Uint16                ADCRESULT10; // Conversion Result Buffer 10
Uint16                ADCRESULT11; // Conversion Result Buffer 11
Uint16                ADCRESULT12; // Conversion Result Buffer 12
Uint16                ADCRESULT13; // Conversion Result Buffer 13
Uint16                ADCRESULT14; // Conversion Result Buffer 14
Uint16                ADCRESULT15; // Conversion Result Buffer 15
union ADCTRL3_REG    ADCTRL3;    // ADC Control 3
union ADCST_REG       ADCST;       // ADC Status Register
Uint16    rsvd1;
Uint16                rsvd2;
union ADCREFSEL_REG ADCREFSEL;    // Reference Select Register
union ADCOFFTRIM_REG ADCOFFTRIM; // Offset Trim Register
};

struct ADC_RESULT_MIRROR_REGS
{
Uint16                ADCRESULT0; // Conversion Result Buffer 0
Uint16                ADCRESULT1; // Conversion Result Buffer 1
Uint16                ADCRESULT2; // Conversion Result Buffer 2
Uint16                ADCRESULT3; // Conversion Result Buffer 3
Uint16                ADCRESULT4; // Conversion Result Buffer 4
Uint16                ADCRESULT5; // Conversion Result Buffer 5
Uint16                ADCRESULT6; // Conversion Result Buffer 6
Uint16                ADCRESULT7; // Conversion Result Buffer 7
Uint16                ADCRESULT8; // Conversion Result Buffer 8
Uint16                ADCRESULT9; // Conversion Result Buffer 9
Uint16                ADCRESULT10; // Conversion Result Buffer 10
Uint16                ADCRESULT11; // Conversion Result Buffer 11
Uint16                ADCRESULT12; // Conversion Result Buffer 12
Uint16                ADCRESULT13; // Conversion Result Buffer 13
Uint16                ADCRESULT14; // Conversion Result Buffer 14
Uint16                ADCRESULT15; // Conversion Result Buffer 15
};

求问高人这两结构体里的AD采样结果一样吗？是不是有个专门给DMA访问的呢？

只看该作者 · 2018-12-7 22:41

突然自己发现官方说明上规定了，前者不支持DMA访问，后者可以

求问F28335中两个ADC采样结果AdcMirrorFile和AdcRegsFile的区别

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