[参考译文] CC2640R2F：配置 ADC 时遇到问题

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https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1204115/cc2640r2f-trouble-configuring-adc

器件型号：CC2640R2F

我正在学习 GUI Composer ADC 应用程序教程、现在很难判断要从哪个引脚读取 ADC 值。在示例代码中,传递给 ADC_Open()函数的是 Board_ADC0。当我查看 Board.h 文件并深入到适合我的板的 ADC0时、它显示了这一点

该引脚似乎未映射到任何物理引脚。我查看了数据表、并看到 ADC 引脚位于何处

但是、引脚36与电路板图上的引脚不匹配

2 年多前

0 admin 2 年多前

TI__Guru**** 2609955 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

您好、Charlie。

DIO23低于3.3V。不会针对 CC2640R2F Launchpad 更新上图。可能这不是 CC2640R2F Launchpad。

在 CC2640R2_LAUNCHXL.h 上枚举 CC2640R2_LAUNCHXL_ADCName

/*!
 *  @def    CC2640R2_LAUNCHXL_ADCName
 *  @brief  Enum of ADCs
 */
typedef enum CC2640R2_LAUNCHXL_ADCName {
    CC2640R2_LAUNCHXL_ADC0 = 0,
    CC2640R2_LAUNCHXL_ADC1,
    CC2640R2_LAUNCHXL_ADC2,
    CC2640R2_LAUNCHXL_ADC3,
    CC2640R2_LAUNCHXL_ADC4,
    CC2640R2_LAUNCHXL_ADC5,
    CC2640R2_LAUNCHXL_ADC6,
    CC2640R2_LAUNCHXL_ADC7,
    CC2640R2_LAUNCHXL_ADCDCOUPL,
    CC2640R2_LAUNCHXL_ADCVSS,
    CC2640R2_LAUNCHXL_ADCVDDS,

    CC2640R2_LAUNCHXL_ADCCOUNT
} CC2640R2_LAUNCHXL_ADCName;

上述对 CCC26XX_HWAttrs adcCC26xxHWAttrs [CC2640R2_LAUNCHXL_ADCCOUNT ](CC2640R2_LAUNCHXL.c)的枚举引用

/*
 *  =============================== ADC ===============================
 */
#include <ti/drivers/ADC.h>
#include <ti/drivers/adc/ADCCC26XX.h>

ADCCC26XX_Object adcCC26xxObjects[CC2640R2_LAUNCHXL_ADCCOUNT];

const ADCCC26XX_HWAttrs adcCC26xxHWAttrs[CC2640R2_LAUNCHXL_ADCCOUNT] = {
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO23_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO7,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO24_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO6,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO25_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO5,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO26_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO4,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO27_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO3,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO28_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO2,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO29_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO1,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = CC2640R2_LAUNCHXL_DIO30_ANALOG,
        .adcCompBInput       = ADC_COMPB_IN_AUXIO0,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_10P9_MS,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = PIN_UNASSIGNED,
        .adcCompBInput       = ADC_COMPB_IN_DCOUPL,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = PIN_UNASSIGNED,
        .adcCompBInput       = ADC_COMPB_IN_VSS,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    },
    {
        .adcDIO              = PIN_UNASSIGNED,
        .adcCompBInput       = ADC_COMPB_IN_VDDS,
        .refSource           = ADCCC26XX_FIXED_REFERENCE,
        .samplingDuration    = ADCCC26XX_SAMPLING_DURATION_2P7_US,
        .inputScalingEnabled = true,
        .triggerSource       = ADCCC26XX_TRIGGER_MANUAL,
        .returnAdjustedVal   = false
    }
};

CC2640R2_LAUNCHXL_ADC0 = CC2640R2_LAUNCHXL_DIO23_ANALOG = IOID_23

我建议您只需调试 adcsinglechchannel 示例程序、以查看读取 ADC 值。

-kel

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[参考译文] CC2640R2F：配置 ADC 时遇到问题