[参考译文] CC1312R：从 MEMS 读取数据时出现调试/非调试问题

从关断模式唤醒后、我无法重新创建您看到的与在正确的时钟下使用 SPI 相关的问题。

我采用了引脚关断示例、并对其进行了修改、以便在器件每次从关断状态唤醒时通过 SPI @ 8MHz 传输2个字节。 我已验证 SPI 时钟速度是否正确。

我对代码的修改如下所示：

#define SPI_MSG_LENGTH      (2)

SPI_Handle spiHandle;
SPI_Transaction spiTransaction;

unsigned char masterRxBuffer[SPI_MSG_LENGTH];
unsigned char masterTxBuffer[SPI_MSG_LENGTH] = {0xAA, 0xAA};
// .
// .
// .

static void taskFxn(UArg a0, UArg a1)
{
    /* If we are waking up from shutdown, we do something extra. */
    if (isWakingFromShutdown) {
        /* In this example we toggle LED1 */
        uint32_t sleepUs = 50000;
        Task_sleep(sleepUs / Clock_tickPeriod);
        
        SPI_Params      spiParams;

        SPI_init();
        SPI_Params_init(&spiParams);
        spiParams.frameFormat           = SPI_POL1_PHA1;
        spiParams.mode                  = SPI_MASTER;
        spiParams.transferMode          = SPI_MODE_BLOCKING;
        spiParams.bitRate               = 8000000;

        spiHandle = SPI_open(CONFIG_SPI_0, &spiParams);

        /* Start transfer */
        spiTransaction.count = SPI_MSG_LENGTH;
        spiTransaction.txBuf = masterTxBuffer;
        spiTransaction.rxBuf = masterRxBuffer;

        spiTransaction.txBuf = masterTxBuffer;
        SPI_transfer(spiHandle, &spiTransaction);
    }

    /* Turn on LED0 to indicate active */
    PIN_setOutputValue(hPins, CONFIG_PIN_LED_0, 1);

    /* Pend on semaphore before going to shutdown */
    Semaphore_pend(Semaphore_handle(&shutdownSem), BIOS_WAIT_FOREVER);

    /* Turn off LED0 */
    PIN_setOutputValue(hPins, CONFIG_PIN_LED_0, 0);

    /* Configure DIO for wake up from shutdown */
    PINCC26XX_setWakeup(ButtonTableWakeUp);

    /* Go to shutdown */
    Power_shutdown(0, 0);

    /* Should never get here, since shutdown will reset. */
    while (1);
}

BR

Siri