[参考译文] CC2640R2F：SDKv5.30：adcbuffcontinuous 示例程序没有连续对 ADC 进行采样？

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https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1431649/cc2640r2f-sdkv5-30-adcbufcontinuous-example-program-does-not-continuously-sample-the-adc

器件型号：CC2640R2F

工具与软件：

您好！

我使用的是 SDKv5.30 adcbuffcontinuous 驱动程序示例程序。我修改了 adcBufCallback()以将内容完整的 ADCBuffer[]复制到 rawadcbuffer[] 。请参阅下面的代码更改。

void adcBufCallback(ADCBuf_Handle handle, ADCBuf_Conversion *conversion,
    void *completedADCBuffer, uint32_t completedChannel)
{
    uint_fast16_t i;
    uint_fast16_t uartTxBufferOffset = 0;

    memcpy(rawadcbuffer, completedADCBuffer, ADCBUFFERSIZE);
    /* Adjust raw ADC values and convert them to microvolts */
    ADCBuf_adjustRawValues(handle, completedADCBuffer, 2*ADCBUFFERSIZE,
        completedChannel);
    memcpy(rawadcbuffer, completedADCBuffer, ADCBUFFERSIZE);
    ADCBuf_convertAdjustedToMicroVolts(handle, completedChannel,
        completedADCBuffer, microVoltBuffer, ADCBUFFERSIZE);

    /* Start with a header message. */
    uartTxBufferOffset = snprintf(uartTxBuffer,
        UARTBUFFERSIZE - uartTxBufferOffset, "\r\nBuffer %u finished.",
        (unsigned int)buffersCompletedCounter++);

    /* Write raw adjusted values to the UART buffer if there is room. */
    uartTxBufferOffset += snprintf(uartTxBuffer + uartTxBufferOffset,
        UARTBUFFERSIZE - uartTxBufferOffset, "\r\nRaw Buffer: ");

    for (i = 0; i < ADCBUFFERSIZE && uartTxBufferOffset < UARTBUFFERSIZE; i++) {
        uartTxBufferOffset += snprintf(uartTxBuffer + uartTxBufferOffset,
            UARTBUFFERSIZE - uartTxBufferOffset, "%u,",
        *(((uint16_t *)completedADCBuffer) + i));
    }

    /* Write microvolt values to the UART buffer if there is room. */
    if (uartTxBufferOffset < UARTBUFFERSIZE) {
        uartTxBufferOffset += snprintf(uartTxBuffer + uartTxBufferOffset,
            UARTBUFFERSIZE - uartTxBufferOffset, "\r\nMicrovolts: ");

        for (i = 0; i < ADCBUFFERSIZE && uartTxBufferOffset < UARTBUFFERSIZE; i++) {
            uartTxBufferOffset += snprintf(uartTxBuffer + uartTxBufferOffset,
                UARTBUFFERSIZE - uartTxBufferOffset, "%u,",
                (unsigned int)microVoltBuffer[i]);
        }
    }

    /*
     * Ensure we don't write outside the buffer.
     * Append a newline after the data.
     */
    if (uartTxBufferOffset < UARTBUFFERSIZE) {
        uartTxBuffer[uartTxBufferOffset++] = '\n';
    }
    else {
        uartTxBuffer[UARTBUFFERSIZE-1] = '\n';
    }

    /* Display the data via UART */
    UART_write(uart, uartTxBuffer, uartTxBufferOffset);
}

这是 rawadcbuffer[]。有很多零点。 100个 ADC 读数中只有25个。