[参考译文] LAUNCHXL-CC1310：能否在射频回调(SWI)函数中调用 RF_postCmd ()函数？

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https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1177144/launchxl-cc1310-can-i-call-rf_postcmd-function-in-the-rf-callback-swi-function

器件型号：LAUNCHXL-CC1310

我希望通过无线电连续发送数据、因此我键入以下代码、对吧？

在 main()函数中：

RF_postCmd(rfHandle, (RF_Op*)RF_pCmdTxHS, RF_PriorityNormal, &tx_callback, RF_EventLastCmdDone);

回调函数：

static void tx_callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
{
    if (e & RF_EventLastCmdDone)
    {
        /* For TC_HSM, the packet length and a pointer to the first byte in the payload can be found as follows:
         *
         * uint8_t packetLength      = ((*(uint8_t*)(&currentDataEntry->data + 1)) << 8) | (*(uint8_t*)(&currentDataEntry->data));
         * uint8_t* packetDataPointer = (uint8_t*)(&currentDataEntry->data + 2);
         *
         * For the other test cases (TC_LRM, TC_OOK and TC_FSK), the packet length and first payload byte is found here:
         *
         * uint8_t packetLength      = *(uint8_t*)(&currentDataEntry->data);
         * uint8_t* packetDataPointer = (uint8_t*)(&currentDataEntry->data + 1);
         */
        packetTransfered = true;
    }
}

2 年多前

0 admin 2 年多前

TI__Guru**** 2487425 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。

抱歉、回调函数粘贴错误、

static void tx_callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
{
    if (e & RF_EventLastCmdDone)
    {
        /* For TC_HSM, the packet length and a pointer to the first byte in the payload can be found as follows:
         *
         * uint8_t packetLength      = ((*(uint8_t*)(&currentDataEntry->data + 1)) << 8) | (*(uint8_t*)(&currentDataEntry->data));
         * uint8_t* packetDataPointer = (uint8_t*)(&currentDataEntry->data + 2);
         *
         * For the other test cases (TC_LRM, TC_OOK and TC_FSK), the packet length and first payload byte is found here:
         *
         * uint8_t packetLength      = *(uint8_t*)(&currentDataEntry->data);
         * uint8_t* packetDataPointer = (uint8_t*)(&currentDataEntry->data + 1);
         */
        
        RF_postCmd(rfHandle, (RF_Op*)RF_pCmdTxHS, RF_PriorityNormal, &tx_callback, RF_EventLastCmdDone);
        
    }
}

0 admin 2 年多前

TI__Guru**** 2487425 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 Chunkai、

回调函数在 SWI 上下文中执行、如源代码(RFCC26X2.h)中所示：

All callback functions run in software interrupt (SWI) context.

此外、作为 RF_postCmd 状态的源代码、您可以在 SWI 上下文中使用 RF_postCmd。

/**
* @brief Appends RF operation commands to the driver's command queue and returns a
* command handle.
*
* The RF operation \a pOp may either represent a single operation or may be the first
* operation in a chain.
* If the command queue is empty, the \a pCmd is dispatched immediately. If there are
* other operations pending, then \a pCmd is processed after all other commands have been
* finished.
* The RF operation command must be compatible to the RF_Mode selected by RF_open(), e.g.
* proprietary commands can only be used when the RF core is configured for proprietary mode.
*
* The returned command handle is an identifier that can be used to control command execution
* later on, for instance with RF_pendCmd() or RF_cancelCmd().
* It is a 16 Bit signed integer value, incremented on every new command.
* If the RF driver runs out of command containers, RF_ALLOC_ERROR is returned.
*
* The priority \a ePri is only relevant in multi-client applications where commands of distinct
* clients may interrupt each other.
* Only commands started by RF_scheduleCmd() can preempt
* running commands. #RF_postCmd() or RF_runCmd() do never interrupt a running command.
* In single-client applications, \a ePri is ignored and should be set to ::RF_PriorityNormal.
*
* A callback function \a pCb might be specified to get notified about events during command
* execution. Events are subscribed by the bit mask \a bmEvent.
* Valid event flags are specified in @ref RF_Core_Events and @ref RF_Driver_Events.
* If no callback is set, RF_pendCmd() can be used to synchronize the current task to command
* execution. For this it is necessary to subscribe all relevant events.
* The termination events ::RF_EventLastCmdDone, ::RF_EventCmdCancelled, ::RF_EventCmdAborted and
* ::RF_EventCmdStopped are always implicitly subscribed.
*
* The following limitations apply to the execution of command chains:
*
* - If TRIG_ABSTIME is used as a start trigger for the first command, TRIG_REL_FIRST_START
* can not be used for any other command. This is because the RF driver may insert a
* frequency-select command (CMD_FS) at the front of the chain when it performs an
* automatic power-up.
* - If a command chain has more than one CMD_FS, the first CMD_FS in the chain is cached.
* This CMD_FS is used on the next automatic power-up.
* - To avoid execution of cached CMD_FS and directly use a new CMD_FS on power up, place CMD_FS
* at the head of the command chain.
*
* @note Calling context : Task/SWI

这样做是安全的。以下是实际的文档： https://dev.ti.com/tirex/explore/content/simplelink_cc13x0_sdk_4_20_02_07/docs/tidrivers/doxygen/html/_r_f_8h.html#a2b0ee444fcb74917df94eefea804ecbb

此致、

Arthur

0 admin 2 年多前

TI__Guru**** 2487425 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。

非常感谢 Arthur R.

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[参考译文] LAUNCHXL-CC1310：能否在射频回调(SWI)函数中调用 RF_postCmd ()函数？