80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
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#ifndef BSP_STM32_RTEMS_NETWORKING_TMTCUDPBRIDGE_H_
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#define BSP_STM32_RTEMS_NETWORKING_TMTCUDPBRIDGE_H_
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#include <fsfw/tmtcservices/TmTcBridge.h>
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#include <lwip/udp.h>
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#include <lwip/ip_addr.h>
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#define TCPIP_RECV_WIRETAPPING 0
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/**
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* This bridge is used to forward TMTC packets received via LwIP UDP to the internal software bus.
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*/
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class TmTcLwIpUdpBridge : public TmTcBridge {
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friend class UdpTcLwIpPollingTask;
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public:
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TmTcLwIpUdpBridge(object_id_t objectId,
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object_id_t ccsdsPacketDistributor, object_id_t tmStoreId,
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object_id_t tcStoreId);
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virtual ~TmTcLwIpUdpBridge();
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virtual ReturnValue_t initialize() override;
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ReturnValue_t udp_server_init();
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/**
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* In addition to default implementation, ethernet link status is checked.
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* @param operationCode
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* @return
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*/
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virtual ReturnValue_t performOperation(uint8_t operationCode = 0) override;
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/** TM Send implementation uses udp_send function from lwIP stack
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* @param data
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* @param dataLen
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* @return
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*/
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virtual ReturnValue_t sendTm(const uint8_t * data, size_t dataLen) override;
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/**
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* @brief This function is called when an UDP datagram has been
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* received on the port UDP_PORT.
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* @param arg
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* @param upcb_
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* @param p
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* @param addr Source address which will be bound to TmTcUdpBridge::lastAdd
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* @param port
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*/
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static void udp_server_receive_callback(void *arg,
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struct udp_pcb *upcb_, struct pbuf *p, const ip_addr_t *addr,
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u16_t port);
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/**
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* Check whether the communication link is up.
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* Caller must ensure thread-safety by using the bridge lock.
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* @return
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*/
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bool comLinkUp() const;
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private:
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struct udp_pcb *upcb = nullptr;
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ip_addr_t lastAdd;
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u16_t lastPort = 0;
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bool physicalConnection = false;
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MutexIF* bridgeLock = nullptr;
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#if TCPIP_RECV_WIRETAPPING == 1
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bool connectFlag = false;
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#endif
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/**
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* Used to notify bridge about change in the physical ethernet connection.
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* Connection does not mean that replies are possible (recipient not set yet), but
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* disconnect means that we can't send anything. Caller must ensure thread-safety
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* by using the bridge lock.
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*/
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void physicalConnectStatusChange(bool connect);
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};
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#endif /* BSP_STM32_RTEMS_NETWORKING_TMTCUDPBRIDGE_H_ */
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