cc1310的ADC配置问题

自己在看TI提供的官方例程adcbufcontinuous。然后有两个问题

1.在程序中看到一个配置引脚，如下

 PIN_Config AlsPinTable[] =        {
        Board_ALS_PWR    | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH    | PIN_PUSHPULL, /* Turn on ALS power */
        PIN_TERMINATE                                                            /* Terminate list */
    };

备注是光传感器，这个引脚应该是传感器的模拟信号输出引脚。那这个引脚对于CC1310来说引脚应该是模拟输入，但是这里为什么配置的是推拉输出？

2.程序有一个地方是设置ADC的通道。

continuousConversion.adcChannel = Board_ADCBufChannel0;

这个跟引脚应该是对应的，我在官网的数据手册中并没有找到通道和引脚的对应关系，不知道能否提供一个有通道引脚对应的数据手册链接？

以上两个问题希望能有大哥给解释一下。谢谢。

Felix ZF：

Board_ALS_PWR 引脚并不是AD的模拟输入引脚，而是GPIO输出，用来Turn on the power to the ambient light sensor

代码中的注释有说明

/* * The CC2650DK_7ID and CC1310DK_7XD measure an ambient light sensor in this example. * It is not powered by default to avoid high current consumption in other examples. * The code below turns on the power to the sensor. */

Bin Hu4：

回复 Felix ZF:

恩，我把那个更改了，我看到输入引脚设置的状态没有模拟输入，这个该如何设置呢？

Bin Hu4：

第二个问题已经解决了，在头文件里有解释：

 * | DIO    | CC26xx 7×7 AUXIO CompBInput   | CC13xx 7×7 AUXIO CompBInput   | CC26xx 5×5 AUXIO CompBInput   | CC13xx 5×5 AUXIO CompBInput   | CC26xx 4×4 AUXIO CompBInput   | CC13xx 4×4 AUXIO CompBInput * |——–|——————————-|——————————-|——————————-|——————————-|——————————-|—————————– * | 0      | No                            | No                            | No                            | No                            | No                            | No * | 1      | No                            | No                            | No                            | No                            | No                            | No * | 2      | No                            | No                            | No                            | No                            | No                            | No * | 3      | No                            | No                            | No                            | No                            | No                            | No * | 4      | No                            | No                            | No                            | No                            | No                            | No * | 5      | No                            | No                            | No                            | No                            | ADC_COMPB_IN_AUXIO7           | ADC_COMPB_IN_AUXIO7 * | 6      | No                            | No                            | No                            | No                            | ADC_COMPB_IN_AUXIO6           | ADC_COMPB_IN_AUXIO6 * | 7      | No                            | No                            | ADC_COMPB_IN_AUXIO7           | ADC_COMPB_IN_AUXIO7           | ADC_COMPB_IN_AUXIO5           | ADC_COMPB_IN_AUXIO5 * | 8      | No                            | No                            | ADC_COMPB_IN_AUXIO6           | ADC_COMPB_IN_AUXIO6           | ADC_COMPB_IN_AUXIO4           | ADC_COMPB_IN_AUXIO4 * | 9      | No                            | No                            | ADC_COMPB_IN_AUXIO5           | ADC_COMPB_IN_AUXIO5           | ADC_COMPB_IN_AUXIO3           | ADC_COMPB_IN_AUXIO3 * | 10     | No                            | No                            | ADC_COMPB_IN_AUXIO4           | ADC_COMPB_IN_AUXIO4           | No                            | No * | 11     | No                            | No                            | ADC_COMPB_IN_AUXIO3           | ADC_COMPB_IN_AUXIO3           | No                            | No * | 12     | No                            | No                            | ADC_COMPB_IN_AUXIO2           | ADC_COMPB_IN_AUXIO2           | No                            | No * | 13     | No                            | No                            | ADC_COMPB_IN_AUXIO1           | ADC_COMPB_IN_AUXIO1           | No                            | No * | 14     | No                            | No                            | ADC_COMPB_IN_AUXIO0           | ADC_COMPB_IN_AUXIO0           | No                            | No * | 15-22  | No                            | No                            | No                            | No                            | No                            | No * | 23     | ADC_COMPB_IN_AUXIO7           | ADC_COMPB_IN_AUXIO7           | No                            | No                            | No                            | No * | 24     | ADC_COMPB_IN_AUXIO6           | ADC_COMPB_IN_AUXIO6           | No                            | No                            | No                            | No * | 25     | ADC_COMPB_IN_AUXIO5           | ADC_COMPB_IN_AUXIO5           | No                            | No                            | No                            | No * | 26     | ADC_COMPB_IN_AUXIO4           | ADC_COMPB_IN_AUXIO4           | No                            | No                            | No                            | No * | 27     | ADC_COMPB_IN_AUXIO3           | ADC_COMPB_IN_AUXIO3           | No                            | No                            | No                            | No * | 28     | ADC_COMPB_IN_AUXIO2           | ADC_COMPB_IN_AUXIO2           | No                            | No                            | No                            | No * | 29     | ADC_COMPB_IN_AUXIO1           | ADC_COMPB_IN_AUXIO1           | No                            | No                            | No                            | No * | 30     | ADC_COMPB_IN_AUXIO0           | ADC_COMPB_IN_AUXIO0           | No                            | No                            | No         

Bin Hu4：

回复 Bin Hu4:

头文件是ADCBufCC26XX.H

Felix ZF：

回复 Bin Hu4:

嗯，示例代码中的注释和说明还是很全面的。

Bin Hu4：

回复 Felix ZF:

但是引脚配置的问题还是没有解决，我在官方的资料上看到它的输入引脚配置的模式有四种

input mode(detached,hysteresis,pullup,pulldown)。这几个那个可以作为模拟输入呢？

Felix ZF：

回复 Bin Hu4:

这些都是针对GPIO的设置

在示例工程中的CC1310_LAUNCHXL.c文件中，有关于ADC相关引脚、参考源、采样时间、触发源等的设置

/* * ========================== ADCBuf begin ========================================= *//* Place into subsections to allow the TI linker to remove items properly */#if defined(__TI_COMPILER_VERSION__)#pragma DATA_SECTION(ADCBuf_config, ".const:ADCBuf_config")#pragma DATA_SECTION(adcBufCC26xxHWAttrs, ".const:adcBufCC26xxHWAttrs")#pragma DATA_SECTION(ADCBufCC26XX_adcChannelLut, ".const:ADCBufCC26XX_adcChannelLut")#endif

/* Include drivers */#include <ti/drivers/ADCBuf.h>#include <ti/drivers/adcbuf/ADCBufCC26XX.h>

/* ADC objects */ADCBufCC26XX_Object adcBufCC26xxObjects[CC1310_LAUNCHXL_ADCBufCOUNT];

/* * This table converts a virtual adc channel into a dio and internal analogue input signal. * This table is necessary for the functioning of the adc and adcBuf drivers. * Comment out unused entries. * Dio and internal signal pairs are hardwired. Do not remap them in the table. * The mapping of dio and internal signals is package dependent. Make sure you copied the * correct table from an example board file. */const ADCBufCC26XX_AdcChannelLutEntry ADCBufCC26XX_adcChannelLut[] = { {PIN_UNASSIGNED, ADC_COMPB_IN_VDDS}, {PIN_UNASSIGNED, ADC_COMPB_IN_DCOUPL}, {PIN_UNASSIGNED, ADC_COMPB_IN_VSS}, {Board_DIO23_ANALOG, ADC_COMPB_IN_AUXIO7}, {Board_DIO24_ANALOG, ADC_COMPB_IN_AUXIO6}, {Board_DIO25_ANALOG, ADC_COMPB_IN_AUXIO5}, {Board_DIO26_ANALOG, ADC_COMPB_IN_AUXIO4}, {Board_DIO27_ANALOG, ADC_COMPB_IN_AUXIO3}, {Board_DIO28_ANALOG, ADC_COMPB_IN_AUXIO2}, {Board_DIO29_ANALOG, ADC_COMPB_IN_AUXIO1}, {Board_DIO30_ANALOG, ADC_COMPB_IN_AUXIO0},};

const ADCBufCC26XX_HWAttrs adcBufCC26xxHWAttrs[CC1310_LAUNCHXL_ADCBufCOUNT] = { { .intPriority = ~0, .swiPriority = 0, .adcChannelLut = ADCBufCC26XX_adcChannelLut, .gpTimerUnit = Board_GPTIMER0A, .gptDMAChannelMask = 1 << UDMA_CHAN_TIMER0_A, }};

const ADCBuf_Config ADCBuf_config[] = { {&ADCBufCC26XX_fxnTable, &adcBufCC26xxObjects[0], &adcBufCC26xxHWAttrs[0]}, {NULL, NULL, NULL},};/* * ========================== ADCBuf end ========================================= */

/* * ========================== ADC begin ========================================= *//* Place into subsections to allow the TI linker to remove items properly */#if defined(__TI_COMPILER_VERSION__)#pragma DATA_SECTION(ADC_config, ".const:ADC_config")#pragma DATA_SECTION(adcCC26xxHWAttrs, ".const:adcCC26xxHWAttrs")#endif

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

/* ADC objects */ADCCC26XX_Object adcCC26xxObjects[CC1310_LAUNCHXL_ADCCOUNT];

const ADCCC26XX_HWAttrs adcCC26xxHWAttrs[CC1310_LAUNCHXL_ADCCOUNT] = { { .adcDIO = Board_DIO23_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO7, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO24_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO6, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO25_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO5, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO26_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO4, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO27_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO3, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO28_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO2, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO29_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO1, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = Board_DIO30_ANALOG, .adcCompBInput = ADC_COMPB_IN_AUXIO0, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_10P9_MS, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = PIN_UNASSIGNED, .adcCompBInput = ADC_COMPB_IN_DCOUPL, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = PIN_UNASSIGNED, .adcCompBInput = ADC_COMPB_IN_VSS, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }, { .adcDIO = PIN_UNASSIGNED, .adcCompBInput = ADC_COMPB_IN_VDDS, .refSource = ADCCC26XX_FIXED_REFERENCE, .samplingDuration = ADCCC26XX_SAMPLING_DURATION_2P7_US, .inputScalingEnabled = true, .triggerSource = ADCCC26XX_TRIGGER_MANUAL }};

const ADC_Config ADC_config[] = { {&ADCCC26XX_fxnTable, &adcCC26xxObjects[0], &adcCC26xxHWAttrs[0]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[1], &adcCC26xxHWAttrs[1]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[2], &adcCC26xxHWAttrs[2]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[3], &adcCC26xxHWAttrs[3]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[4], &adcCC26xxHWAttrs[4]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[5], &adcCC26xxHWAttrs[5]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[6], &adcCC26xxHWAttrs[6]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[7], &adcCC26xxHWAttrs[7]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[8], &adcCC26xxHWAttrs[8]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[9], &adcCC26xxHWAttrs[9]}, {&ADCCC26XX_fxnTable, &adcCC26xxObjects[10], &adcCC26xxHWAttrs[10]}, {NULL, NULL, NULL},};

/* * ========================== ADC end ========================================= */

Bin Hu4：

回复 Felix ZF:

谢谢回复，我使用的是CC1310DK_7XD相关的设备。这个LAUNCHXL的代码也能适用？

Bin Hu4：

回复 Felix ZF:

恩，刚看了CC1310DK_7XD.c的文件，修改了一些参数，但是还是AD读取的值还是不对，我把输入直接接GND，讲道理AD读出来的值应该很小，但是值取很大。我会继续追踪。