486 lines
15 KiB
C
486 lines
15 KiB
C
/**
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* @file Mesh_Network.c
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* @brief Mesh network layer used by OTA and APP
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* @author Hendrik Schutter, init based in ESP32-IDE code
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* @date 20.01.2021
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*
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* Additional Infos: Start network and send and receive data.
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*/
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#include "Mesh_Network.h"
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static const char *LOG_TAG = "mesh_network";
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//w: errMeshNetworkInitialize
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//r: errMeshNetworkInitialize;vMeshNetworkGetOwnAddr;errMeshNetworkGetChildren
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uint8_t u8ownMAC[6];
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//w: errMeshNetworkInitialize; vMeshNetworkMeshEventHandler
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//r: vMeshNetworkMeshEventHandler
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esp_netif_t* pNetifSta;
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//w: errMeshNetworkInitialize; vMeshNetworkMeshEventHandler
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//r: errMeshNetworkInitialize;
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bool bIsMeshConnected;
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//w: errMeshNetworkInitialize; vMeshNetworkMeshEventHandler
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//r: vMeshNetworkMeshEventHandler
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int32_t i32MeshLayer;
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//w: errMeshNetworkInitialize; vMeshNetworkMeshEventHandler
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//r: vMeshNetworkMeshEventHandler
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mesh_addr_t meshParentAddr;
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//function pointer for callbacks
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void (*pAppRxHandle)(const uint8_t* const, const uint8_t* const);
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void (*pOTAChildConnectHandle)(const uint8_t* const);
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void (*pOTAMessageHandle)(const MESH_PACKET_t* const);
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void (*pChangeStateOfServerWorkerHandle)(const bool );
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/**
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* @fn esp_err_t errMeshNetworkInitialize()
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* @brief Starts the mesh network
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* @param void
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* @return ESP32 error code
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* @author Hendrik Schutter, init based in ESP32-IDE code
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* @date 20.01.2021
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*
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* Initialize the network
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*/
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esp_err_t errMeshNetworkInitialize(void)
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{
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//init module variables
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esp_err_t err;
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bIsMeshConnected = false;
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i32MeshLayer = -1;
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pNetifSta = NULL;
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err = nvs_flash_init(); //init non-volatile storage
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#ifdef ERASE_NVS
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if(err == ESP_ERR_NVS_NO_FREE_PAGES) //check if storage is full
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{
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ERROR_CHECK(nvs_flash_erase());
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}
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#endif
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// tcpip initialization
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ERROR_CHECK(esp_netif_init());
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//event initialization
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ERROR_CHECK(esp_event_loop_create_default());
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//create network interfaces for mesh (only station instance saved for further manipulation, soft AP instance ignored
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ERROR_CHECK(esp_netif_create_default_wifi_mesh_netifs(&pNetifSta, NULL));
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//wifi initialization
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ERROR_CHECK(errMeshNetworkInitializeWiFi());
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//mesh initialization
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ERROR_CHECK(esp_mesh_init());
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//mesh initialization
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ERROR_CHECK(esp_event_handler_register(MESH_EVENT, ESP_EVENT_ANY_ID, &vMeshNetworkMeshEventHandler, NULL));
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//set mesh topology
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ERROR_CHECK(esp_mesh_set_topology(CONFIG_MESH_TOPOLOGY));
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//set mesh max layer according to the topology
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ERROR_CHECK(esp_mesh_set_max_layer(CONFIG_MESH_MAX_LAYER));
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ERROR_CHECK(esp_mesh_set_vote_percentage(1));
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ERROR_CHECK(esp_mesh_set_xon_qsize(128));
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//Disable mesh PS function
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ERROR_CHECK(esp_mesh_disable_ps());
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ERROR_CHECK(esp_mesh_set_ap_assoc_expire(10));
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mesh_cfg_t cfg = MESH_INIT_CONFIG_DEFAULT();
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/* mesh ID */
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memcpy((uint8_t *) &cfg.mesh_id, CONFIG_MESH_ID, 6);
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ERROR_CHECK(errMeshNetworkInitializeRouter(&cfg));
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/* mesh softAP */
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ERROR_CHECK(esp_mesh_set_ap_authmode(CONFIG_MESH_AP_AUTHMODE));
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cfg.mesh_ap.max_connection = CONFIG_MESH_AP_CONNECTIONS;
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memcpy((uint8_t *) &cfg.mesh_ap.password, CONFIG_MESH_AP_PASSWD,
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strlen(CONFIG_MESH_AP_PASSWD));
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ERROR_CHECK(esp_mesh_set_config(&cfg));
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/* mesh start */
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ERROR_CHECK(esp_mesh_start());
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ERROR_CHECK(esp_base_mac_addr_get(u8ownMAC))
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//debug info
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ESP_LOGD(LOG_TAG, "mesh starts successfully, heap:%d, %s<%d>%s, ps:%d\n", esp_get_minimum_free_heap_size(),
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esp_mesh_is_root_fixed() ? "root fixed" : "root not fixed",
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esp_mesh_get_topology(), esp_mesh_get_topology() ? "(chain)":"(tree)", esp_mesh_is_ps_enabled());
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ESP_LOGI(LOG_TAG, "Node MAC: \"%x:%x:%x:%x:%x:%x\" ", u8ownMAC[0], u8ownMAC[1], u8ownMAC[2], u8ownMAC[3], u8ownMAC[4], u8ownMAC[5]);
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return ESP_OK;
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}
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/**
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* @fn esp_err_t errMeshNetworkInitializeWiFi()
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* @brief Starts the WiFI
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* @param void
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* @return ESP32 error code
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* @author Hendrik Schutter, init based in ESP32-IDE code
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* @date 20.01.2021
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*
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* start the wifi
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*/
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esp_err_t errMeshNetworkInitializeWiFi()
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{
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//wifi initialization
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esp_err_t err = ESP_OK;
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wifi_init_config_t config = WIFI_INIT_CONFIG_DEFAULT();
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ERROR_CHECK(esp_wifi_init(&config));
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ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &vMeshNetworkIpEventHandler, NULL));
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ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_FLASH));
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ERROR_CHECK(esp_wifi_start());
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return err;
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}
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/**
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* @fn esp_err_t errMeshNetworkInitializeRouter(mesh_cfg_t* cfg)
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* @brief Starts the router
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* @param cfg router config
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* @return ESP32 error code
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* @author Hendrik Schutter, init based in ESP32-IDE code
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* @date 20.01.2021
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*
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* Initialize the network
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*/
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esp_err_t errMeshNetworkInitializeRouter(mesh_cfg_t* cfg)
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{
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//router initialization
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esp_err_t err = ESP_OK;
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(*cfg).channel = CONFIG_MESH_CHANNEL;
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(*cfg).router.ssid_len = strlen(CONFIG_MESH_ROUTER_SSID);
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memcpy((uint8_t *) &(*cfg).router.ssid, CONFIG_MESH_ROUTER_SSID, (*cfg).router.ssid_len);
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memcpy((uint8_t *) &(*cfg).router.password, CONFIG_MESH_ROUTER_PASSWD,
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strlen(CONFIG_MESH_ROUTER_PASSWD));
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return err;
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}
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/**
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* @fn esp_err_t errMeshNetworkSetChildConnectedHandle(void (*pChildConnectHandleTmp)(const uint8_t* const cpcu8Data))
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* @brief set callback for event when child connects
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* @param (*pChildConnectHandleTmp)(const uint8_t* const cpcu8Data) function pointer
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 20.01.2021
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*/
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esp_err_t errMeshNetworkSetChildConnectedHandle(void (*pChildConnectHandleTmp)(const uint8_t* const cpcu8Data))
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{
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pOTAChildConnectHandle = pChildConnectHandleTmp;
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return ESP_OK;
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}
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/**
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* @fn esp_err_t errMeshNetworkSetAppReceiveHandle(void (*pAppRxHandleTmp)(const uint8_t* const cpcu8Data, const uint8_t* const pu8Sender))
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* @brief set callback for event when application data is received
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* @param (*pAppRxHandleTmp)(const uint8_t* const cpcu8Data, const uint8_t* const pu8Sender) function pointer
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 20.01.2021
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*/
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esp_err_t errMeshNetworkSetAppReceiveHandle(void (*pAppRxHandleTmp)(const uint8_t* const cpcu8Data, const uint8_t* const pu8Sender))
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{
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pAppRxHandle = pAppRxHandleTmp; //set handle from app as receive handle if an app packet is received
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return ESP_OK;
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}
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/**
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* @fn esp_err_t errMeshNetworkSetOTAMessageHandleHandle(void (*pOTAMessageHandleTmp)(const MESH_PACKET_t* const cpcuMeshPacket))
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* @brief set callback for event when OTA message is received
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* @param (*pOTAMessageHandleTmp)(const MESH_PACKET_t* const cpcuMeshPacket) function pointer
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 20.01.2021
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*/
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esp_err_t errMeshNetworkSetOTAMessageHandleHandle(void (*pOTAMessageHandleTmp)(const MESH_PACKET_t* const cpcuMeshPacket))
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{
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pOTAMessageHandle = pOTAMessageHandleTmp;
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return ESP_OK;
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}
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/**
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* @fn esp_err_t errMeshNetworkSetChangeStateOfServerWorkerHandle(void (*pChangeStateOfServerWorkerHandleTmp)(const bool cbState))
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* @brief set callback for event when connectify to server is changed
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* @param (*pChangeStateOfServerWorkerHandleTmp)(const bool cbState) function pointer
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 20.01.2021
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*/
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esp_err_t errMeshNetworkSetChangeStateOfServerWorkerHandle(void (*pChangeStateOfServerWorkerHandleTmp)(const bool cbState))
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{
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pChangeStateOfServerWorkerHandle = pChangeStateOfServerWorkerHandleTmp;
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return ESP_OK;
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}
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/**
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* @fn esp_err_t errMeshNetworkSendMeshPacket(const mesh_addr_t* const cpcAddrDest, const MESH_PACKET_t* const cpcPacket)
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* @brief send packet to mesh node
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* @param cpcAddrDest address from mesh node
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* @param cpcPacket packet to send
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 20.01.2021
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*/
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esp_err_t errMeshNetworkSendMeshPacket(const mesh_addr_t* const cpcAddrDest, const MESH_PACKET_t* const cpcPacket)
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{
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esp_err_t err;
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mesh_data_t data;
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uint8_t tx_buf[CONFIG_MESH_MESSAGE_SIZE] = { 0, };
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data.data = tx_buf;
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data.size = sizeof(tx_buf);
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data.proto = MESH_PROTO_BIN;
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data.tos = MESH_TOS_P2P;
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memcpy(tx_buf, (uint8_t *)cpcPacket, sizeof(MESH_PACKET_t));
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err = esp_mesh_send(cpcAddrDest, &data, MESH_DATA_P2P, NULL, 0);
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return err;
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}
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/**
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* @fn bool bMeshNetworkIsRootNode()
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* @brief return true if this node is the root
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* @param void
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* @return boolean
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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bool bMeshNetworkIsRootNode(void)
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{
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return esp_mesh_is_root();
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}
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/**
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* @fn bool bMeshNetworkIsNodeNeighbour(const mesh_addr_t* const cpcNode)
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* @brief return true if node is neighbour if this
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* @param cpcNode to check
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* @return boolean
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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bool bMeshNetworkIsNodeNeighbour(const mesh_addr_t* const cpcNode)
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{
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esp_err_t err = ESP_OK;
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bool bReturn = false;
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mesh_addr_t addrParent; //addr of parent node
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mesh_addr_t childrenAddr[CONFIG_MESH_ROUTE_TABLE_SIZE]; //array of children attached to this node
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uint16_t u16ChildrenSize = 0U; //number of children attached to this node
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err = errMeshNetworkGetParentNode(&addrParent);
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if(err == ESP_OK)
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{
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if(bMeshNetworkCheckMacEquality(cpcNode->addr, addrParent.addr) == true)
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{
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bReturn = true; //node was found
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}
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}
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if(bReturn == false)
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{
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err = ESP_OK; //reset error code
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ERROR_CHECK(errMeshNetworkGetChildren(childrenAddr, &u16ChildrenSize)); //get all children
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for (uint16_t u16Index = 0; ((u16Index < u16ChildrenSize) && (err == ESP_OK) && (bReturn == false)); u16Index++)
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{
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if(bMeshNetworkCheckMacEquality(cpcNode->addr, childrenAddr[u16Index].addr) == true)
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{
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bReturn = true; //node was found
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}
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}
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}
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return bReturn;
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}
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/**
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* @fn bool bMeshNetworkCheckMacEquality(const uint8_t* const cpcu8aMAC, const uint8_t* const cpcu8bMAC)
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* @brief returns true if MAC address is equal, compares only the first 5 bytes, the last is node specific
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* @param cpcu8aMAC first MAC
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* @param cpcu8bMAC second MAC
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* @return boolean
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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bool bMeshNetworkCheckMacEquality(const uint8_t* const cpcu8aMAC, const uint8_t* const cpcu8bMAC)
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{
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bool bRet = true;
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uint8_t index = 0;
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while ((index < 5) && (bRet == true))
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{
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if(cpcu8aMAC[index] != cpcu8bMAC[index])
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{
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bRet = false;
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}
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index++;
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}
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return bRet;
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}
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/**
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* @fn esp_err_t errMeshNetworkStartReceiveTask()
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* @brief start the task to receive the mesh packets
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* @param void
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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esp_err_t errMeshNetworkStartReceiveTask(void)
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{
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esp_err_t err = ESP_OK;
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BaseType_t xReturned;
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xReturned = xTaskCreate(vMeshNetworkTaskReceiveMeshData, "ReceiveMeshData", 7000, NULL, 5, NULL);
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if(xReturned != pdPASS)
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{
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err = ESP_FAIL;
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}
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return err;
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}
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/**
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* @fn vMeshNetworkGetOwnAddr(mesh_addr_t* const cpMeshOwnAddr)
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* @brief return own MAC addr
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* @param cpMeshOwnAddr pointer to own mac
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* @return void
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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void vMeshNetworkGetOwnAddr(mesh_addr_t* const cpMeshOwnAddr)
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{
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memcpy(cpMeshOwnAddr->addr, u8ownMAC, 6);
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}
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/**
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* @fn esp_err_t errMeshNetworkGetChildren(mesh_addr_t* const cpChildren, uint16_t* const cpu16ChildrenSize)
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* @brief get all connected children to node in array
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* @param cpChildren pointer to array
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* @param cpu16ChildrenSize pointer to size of array
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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esp_err_t errMeshNetworkGetChildren(mesh_addr_t* const cpChildren, uint16_t* const cpu16ChildrenSize)
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{
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esp_err_t err = ESP_OK;
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int route_table_size = 0;
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*cpu16ChildrenSize = 0;
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mesh_addr_t route_table[CONFIG_MESH_ROUTE_TABLE_SIZE];
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ERROR_CHECK(esp_mesh_get_routing_table((mesh_addr_t *) &route_table, (CONFIG_MESH_ROUTE_TABLE_SIZE * 6), &route_table_size));
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if (err == ESP_OK)
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{
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for(uint16_t index = 0; index < esp_mesh_get_routing_table_size(); index++)
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{
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if(! (bMeshNetworkCheckMacEquality(u8ownMAC, route_table[index].addr)) )
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{
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//child node
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cpChildren[*cpu16ChildrenSize] = route_table[index];
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(*cpu16ChildrenSize) = (*cpu16ChildrenSize)+1;
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}
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}
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}
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return err;
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}
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/**
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* @fn void vMeshNetworkTaskReceiveMeshData(void *arg)
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* @brief Task to receive all mesh packets
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* @param arg
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* @return void
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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void vMeshNetworkTaskReceiveMeshData(void *arg)
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{
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esp_err_t err;
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mesh_addr_t from;
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mesh_data_t data;
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uint8_t rx_buf[CONFIG_MESH_MESSAGE_SIZE] = { 0, };
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int flag = 0;
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data.data = rx_buf;
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data.size = CONFIG_MESH_MESSAGE_SIZE;
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while (true)
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{
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data.size = CONFIG_MESH_MESSAGE_SIZE;
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err = esp_mesh_recv(&from, &data, portMAX_DELAY, &flag, NULL, 0);
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if (err != ESP_OK || !data.size)
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{
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ESP_LOGE(LOG_TAG, "err:0x%x, size:%d", err, data.size);
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continue;
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}
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MESH_PACKET_t packet;
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memcpy(&packet, (uint8_t *)rx_buf, sizeof(MESH_PACKET_t)); //parse MESH_PACKET_t
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memcpy(&packet.meshSenderAddr, &from, sizeof(mesh_addr_t)); //copy sender into packet
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switch (packet.type)
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{
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case APP_Data:
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ESP_LOGD(LOG_TAG, "recv: APP_Data");
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//call the rx handle from app
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pAppRxHandle(packet.au8Payload, from.addr); //hand over payload and sender of this mesh packet
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break;
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case OTA_Version_Request:
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case OTA_Version_Response:
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case OTA_Data:
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case OTA_ACK:
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case OTA_Complete:
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case OTA_Abort:
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//call the rx handle from OTA
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if(pOTAMessageHandle)
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{
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pOTAMessageHandle(&packet);
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}
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break;
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default:
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ESP_LOGE(LOG_TAG, "recv: something");
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break;
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}//end switch
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} //end while
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}
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/**
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* @fn esp_err_t errMeshNetworkGetParentNode(mesh_addr_t* const cpMeshParentAddr)
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* @brief get parrent node if connected to it
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* @param cpMeshParentAddr pointer to parent node addrs
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* @return ESP32 error code
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* @author Hendrik Schutter
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* @date 21.01.2021
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*/
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esp_err_t errMeshNetworkGetParentNode(mesh_addr_t* const cpMeshParentAddr)
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{
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esp_err_t err = ESP_OK;
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if((bIsMeshConnected == false) || (esp_mesh_is_root()))
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{
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//this node is not connected or is the root --> this node has no parent
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err = ESP_FAIL;
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}
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else
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{
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//node has parent
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memcpy(cpMeshParentAddr, &meshParentAddr, sizeof(mesh_addr_t));
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}
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return err;
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}
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