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Stopping a Network Device
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NetDev_Stop() is called once each time an interface is stopped.
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NetDev_Stop() must perform the following operations:
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Disable the receiver and transmitter.| Anchor |
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Disable all local MAC interrupt sources.| Anchor |
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Clear all local MAC interrupt status flags.- For DMA devices, re-initialize all receive descriptors Power down the wireless device via network device’s BSP function pointer, NetDev_WiFi_Stop().
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For DMA deviceswireless devices which can queued up packet to transmit, free all transmit descriptors buffer not yet transmitted by calling NetOS_IF_DeallocTaskPost() with the address of the transmit descriptor buffer data areas.- For DMA devices, re-initialize all transmit descriptors. Set perr to NET_DEV_ERR_NONE if no error occurs. Otherwise, set perr to an appropriate network device error code.
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| Some wireless module return result of commands via a response. The device’s Wireless Manager function pointer, NetWiFiMgr_Mgmt() should be used to perform these type of command since it will return only when the response is received and processed. |
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