X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=ucs2-afb%2Fucs_binding.c;h=777b967a28fd76387fed35aaacbadb0b69765ee9;hb=refs%2Fchanges%2F22%2F24722%2F1;hp=c451bf37392ffa944e9c240cbe06eb6041a5ee3e;hpb=2d039f447c2b91ae5e41406238eea3950436c714;p=apps%2Fagl-service-unicens.git

diff --git a/ucs2-afb/ucs_binding.c b/ucs2-afb/ucs_binding.c
index c451bf3..777b967 100644
--- a/ucs2-afb/ucs_binding.c
+++ b/ucs2-afb/ucs_binding.c
@@ -23,6 +23,9 @@
 
 #define BUFFER_FRAME_COUNT 10 /* max frames in buffer */
 #define WAIT_TIMER_US 1000000 /* default waiting timer 1s */
+#define I2C_MAX_DATA_SZ    32 /* max. number of bytes to be written to i2c */
+#define CTRL_MAX_DATA_SZ   45 /* max. number of bytes to be written to control
+                               * channel */
 
 #include <systemd/sd-event.h>
 #include <sys/types.h>
@@ -34,14 +37,16 @@
 #include <time.h>
 #include <assert.h>
 #include <errno.h>
+#include <dirent.h>
 
 #include "ucs_binding.h"
 #include "ucs_interface.h"
-
-
+#include <wrap-json.h>
 
 #define MAX_FILENAME_LEN (100)
 #define RX_BUFFER (64)
+#define XML_CONFIG_FOLDER "/var/"
+#define XML_CONFIG_FILE "config_multichannel_audio_kit.xml"
 
 /** Internal structure, enabling multiple instances of this component.
  * \note Do not access any of this variables.
@@ -59,17 +64,35 @@ typedef struct {
   CdevData_t rx;
   CdevData_t tx;
   UCSI_Data_t ucsiData;
-  UCSI_channelsT *channels;
+  UcsXmlVal_t* ucsConfig;
 } ucsContextT;
 
-static ucsContextT *ucsContextS;
+typedef struct {
+    afb_event_t node_event;
+} EventData_t;
+
+typedef struct {
+    afb_event_t rx_event;
+} EventDataRx_t;
+
+static ucsContextT *ucsContextS = NULL;
+static EventData_t *eventData = NULL;
+static EventDataRx_t *eventDataRx = NULL;
 
 PUBLIC void UcsXml_CB_OnError(const char format[], uint16_t vargsCnt, ...) {
-    /*DEBUG (afbIface, format, args); */
+    /*AFB_API_DEBUG (afbBindingRoot, afbIface, format, args); */
+    /*you may activite logging to stdout here
     va_list args;
     va_start (args, vargsCnt);
     vfprintf (stderr, format, args);
-    va_end(args);
+    va_end(args);*/
+
+    va_list argptr;
+    char outbuf[300];
+    va_start(argptr, vargsCnt);
+    vsprintf(outbuf, format, argptr);
+    va_end(argptr);
+    AFB_API_WARNING (afbBindingRoot, "%s", outbuf);
 }
 
 PUBLIC uint16_t UCSI_CB_OnGetTime(void *pTag) {
@@ -95,23 +118,37 @@ STATIC int onTimerCB (sd_event_source* source,uint64_t timer, void* pTag) {
     return 0;
 }
 
+void UCSI_CB_OnNetworkState(void *pTag, bool isAvailable, uint16_t packetBandwidth, uint8_t amountOfNodes)
+{
+    AFB_API_NOTICE (afbBindingRoot, "Network is available=%d, bw=%d, nodeCnt=%d", isAvailable, packetBandwidth, amountOfNodes);
+}
+
 /* UCS2 Interface Timer Callback */
 PUBLIC void UCSI_CB_OnSetServiceTimer(void *pTag, uint16_t timeout) {
   uint64_t usec;
   /* set a timer with  250ms accuracy */
-  sd_event_now(afb_daemon_get_event_loop(afbIface->daemon), CLOCK_BOOTTIME, &usec);
-  sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, onTimerCB, pTag);
+  sd_event_now(afb_api_get_event_loop(afbBindingRoot), CLOCK_BOOTTIME, &usec);
+  sd_event_add_time(afb_api_get_event_loop(afbBindingRoot), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, onTimerCB, pTag);
 
 }
 
-/** Callback when ever UNICENS forms a human readable message. */
-void UCSI_CB_OnUserMessage(void *pTag, const char format[],
+/**
+ * \brief Callback when ever an Unicens forms a human readable message.
+ *        This can be error events or when enabled also debug messages.
+ * \note This function must be implemented by the integrator
+ * \param pTag - Pointer given by the integrator by UCSI_Init
+ * \param format - Zero terminated format string (following printf rules)
+ * \param vargsCnt - Amount of parameters stored in "..."
+ */
+void UCSI_CB_OnUserMessage(void *pTag, bool isError, const char format[],
     uint16_t vargsCnt, ...) {
-    //DEBUG (afbIface, format, args);
-    va_list args;
-    va_start (args, format);
-    vfprintf (stderr, format, args);
-    va_end(args);
+    va_list argptr;
+    char outbuf[300];
+    pTag = pTag;
+    va_start(argptr, vargsCnt);
+    vsprintf(outbuf, format, argptr);
+    va_end(argptr);
+    AFB_API_NOTICE (afbBindingRoot, "%s",outbuf);
 }
 
 /** UCSI_Service cannot be called directly within UNICENS context, need to service stack through mainloop */
@@ -127,29 +164,11 @@ STATIC int OnServiceRequiredCB (sd_event_source *source, uint64_t usec, void *pT
 PUBLIC void UCSI_CB_OnServiceRequired(void *pTag) {
 
    /* push an asynchronous request for loopback to call UCSI_Service */
-   sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, 0, 0, OnServiceRequiredCB, pTag);
+   sd_event_add_time(afb_api_get_event_loop(afbBindingRoot), NULL, CLOCK_MONOTONIC, 0, 0, OnServiceRequiredCB, pTag);
 }
 
-
-/**
- * \brief Callback when ever a MOST error message was received.
- * \note This function must be implemented by the integrator
- * \param pTag - Pointer given by the integrator by UCSI_Init
- * \note All following parameters belong to the usual MOST message
- */
-PUBLIC void UCSI_CB_OnMostError(void *pTag, uint16_t sourceAddr,
-    uint8_t fblock, uint8_t inst, uint16_t function, uint8_t op,
-    const uint8_t *pPayload, uint32_t payloadLen) {
-
-    // Error to send to syslog
-    DEBUG (afbIface, "OnMostError source=0x%x", sourceAddr);
-}
-
-
-
 /* Callback when ever this UNICENS wants to send a message to INIC. */
-PUBLIC void UCSI_CB_SendMostMessage(void *pTag, const uint8_t *pData, uint32_t len) {
-
+PUBLIC void UCSI_CB_OnTxRequest(void *pTag, const uint8_t *pData, uint32_t len) {
     ucsContextT *ucsContext = (ucsContextT*) pTag;
     CdevData_t *cdevTx = &ucsContext->tx;
     uint32_t total = 0;
@@ -173,6 +192,15 @@ PUBLIC void UCSI_CB_SendMostMessage(void *pTag, const uint8_t *pData, uint32_t l
     }
 }
 
+/** UcsXml_FreeVal be called directly within UNICENS context, need to service stack through mainloop */
+STATIC int OnStopCB (sd_event_source *source, uint64_t usec, void *pTag) {
+    if (NULL != ucsContextS && NULL != ucsContextS->ucsConfig) {
+        UcsXml_FreeVal(ucsContextS->ucsConfig);
+        ucsContextS->ucsConfig = NULL;
+    }
+    return 0;
+}
+
 /**
  * \brief Callback when UNICENS instance has been stopped.
  * \note This event can be used to free memory holding the resources
@@ -181,21 +209,103 @@ PUBLIC void UCSI_CB_SendMostMessage(void *pTag, const uint8_t *pData, uint32_t l
  * \param pTag - Pointer given by the integrator by UCSI_Init
  */
 void UCSI_CB_OnStop(void *pTag) {
-    NOTICE (afbIface, "UNICENS stopped");
+   AFB_API_NOTICE (afbBindingRoot, "UNICENS stopped");
+   /* push an asynchronous request for loopback to call UcsXml_FreeVal */
+   sd_event_add_time(afb_api_get_event_loop(afbBindingRoot), NULL, CLOCK_MONOTONIC, 0, 0, OnStopCB, pTag);
+}
 
+/* helper function: wraps Rx message in json and triggers notification */
+STATIC void NotifyEventRxMsg(uint16_t src_addr, uint16_t msg_id, uint8_t *data_ptr, uint32_t data_sz) {
+
+    if (!eventDataRx)
+        return;
+
+    if (data_sz > CTRL_MAX_DATA_SZ) {
+        AFB_API_NOTICE(afbBindingRoot, "RX-MSG: discarded, payload exceeds %d bytes", CTRL_MAX_DATA_SZ);
+        return;
+    }
+
+    json_object *j_query = NULL;
+    int node = (int)src_addr;
+    int msgid = (int)msg_id;
+    size_t data_size = (size_t)data_sz;
+
+    /* skip data attribute if possible, wrap_json_unpack may fail to deal with
+     * an empty Base64 string */
+    if (data_size > 0)
+        wrap_json_pack(&j_query, "{s:i, s:i, s:Y*}", "node", node, "msgid", msgid, "data", data_ptr, data_size);
+    else
+        wrap_json_pack(&j_query, "{s:i, s:i}", "node", node, "msgid", msgid);
+
+    afb_event_push(eventDataRx->rx_event, j_query);
 }
 
-/**
- * \brief Callback on Unicens management results.
- * \note This function must be implemented by the integrator
- * \param pTag - Pointer given by the integrator by UCSI_Init
- * \param code - Result code
- * \param nodeAddress - Node address of the device causing this event
- * \param pNode - Pointer to node structure holding details of changed node
- */
-extern void UCSI_CB_OnMgrReport(void *pTag, Ucs_MgrReport_t code, uint16_t nodeAddress, Ucs_Rm_Node_t *pNode) {
+/** Asynchronous processing of Rx messages in mainloop is recommended */
+STATIC int OnAmsMessageReceivedCB (sd_event_source *source, void *pTag) {
+    ucsContextT *ucsContext = (ucsContextT*) pTag;
+    uint32_t data_sz = 0U;
+    uint8_t *data_ptr = NULL;
+    uint16_t msg_id = 0U;
+    uint16_t src_addr = 0U;
+
+    while (UCSI_GetAmsMessage(&ucsContext->ucsiData, &msg_id, &src_addr, &data_ptr, &data_sz)) {
+        NotifyEventRxMsg(src_addr, msg_id, data_ptr, data_sz);
+        AFB_API_DEBUG(afbBindingRoot, "RX-MSG: src=0x%04X, msg_id=0x%04X, size=%d", src_addr, msg_id, data_sz);
+        UCSI_ReleaseAmsMessage(&ucsContext->ucsiData);
+    }
+
+    return 0;
+}
+
+/** This callback will be raised, when ever an applicative message on the control channel arrived */
+void UCSI_CB_OnAmsMessageReceived(void *pTag)
+{
+    static sd_event_source *src_ptr = NULL;
+
+    if (!src_ptr)
+    {
+        /* first time usage: create and trigger event source */
+        sd_event_add_defer(afb_api_get_event_loop(afbBindingRoot), &src_ptr, &OnAmsMessageReceivedCB, pTag);
+    }
+    else
+    {
+        sd_event_source_set_enabled(src_ptr, SD_EVENT_ONESHOT);
+    }
+}
+
+void UCSI_CB_OnRouteResult(void *pTag, uint16_t routeId, bool isActive, uint16_t connectionLabel)
+{
+    AFB_API_NOTICE (afbBindingRoot, "Route 0x%X is active=%d, connection label=0x%X", routeId, isActive, connectionLabel);
+}
+
+void UCSI_CB_OnGpioStateChange(void *pTag, uint16_t nodeAddress, uint8_t gpioPinId, bool isHighState)
+{
+    AFB_API_NOTICE (afbBindingRoot, "GPIO state of node 0x%X changed, pin=%d isHigh=%d", nodeAddress, gpioPinId, isHighState);
+}
 
-    DEBUG (afbIface, "OnMgrReport: Ucs_MgrReport_t=%d nodeAdresse=0x%x", code, nodeAddress);
+PUBLIC void UCSI_CB_OnMgrReport(void *pTag, Ucs_MgrReport_t code, uint16_t nodeAddress, Ucs_Rm_Node_t *pNode){
+
+    bool available;
+
+    if (code == UCS_MGR_REP_AVAILABLE) {
+        available = true;
+    }
+    else if (code == UCS_MGR_REP_NOT_AVAILABLE) {
+        available = false;
+    }
+    else {
+        /*untracked event - just exit*/
+        return;
+    }
+
+    if (eventData) {
+
+        json_object *j_event_info = json_object_new_object();
+        json_object_object_add(j_event_info, "node", json_object_new_int(nodeAddress));
+        json_object_object_add(j_event_info, "available", json_object_new_boolean(available));
+
+        afb_event_push(eventData->node_event, j_event_info);
+    }
 }
 
 bool Cdev_Init(CdevData_t *d, const char *fileName, bool read, bool write)
@@ -240,31 +350,53 @@ int onReadCB (sd_event_source* src, int fileFd, uint32_t revents, void* pTag) {
     int ok;
 
     len = read (ucsContext->rx.fileHandle, &pBuffer, sizeof(pBuffer));
-
+    if (0 == len)
+        return 0;
     ok= UCSI_ProcessRxData(&ucsContext->ucsiData, pBuffer, (uint16_t)len);
     if (!ok) {
-        DEBUG (afbIface, "Buffer overrun (not handle)");
+        AFB_API_DEBUG (afbBindingRoot, "Buffer overrun (not handle)");
         /* Buffer overrun could replay pBuffer */
     }
     return 0;
 }
 
-STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
+
+STATIC char* GetDefaultConfig(void) {
+
+    char const *data_path = getenv("AFM_APP_INSTALL_DIR");
+
+    if (!data_path) {
+        AFB_API_ERROR(afbBindingRoot, "AFM_APP_INSTALL_DIR is not defined");
+    }
+    else {
+        size_t size;
+        char * config_path;
+
+        AFB_API_NOTICE(afbBindingRoot, "AFM_APP_INSTALL_DIR is: %s", data_path);
+        size = strlen(data_path) + strlen(XML_CONFIG_FOLDER) + strlen(XML_CONFIG_FILE) + 2;
+        config_path = malloc(size);
+        if (config_path != NULL) {
+            snprintf(config_path, size, "%s%s%s", data_path, XML_CONFIG_FOLDER, XML_CONFIG_FILE);
+            if(access(config_path, R_OK ) == 0) {
+                AFB_API_NOTICE(afbBindingRoot, "Default configuration: %s", config_path);
+                return config_path;
+            }
+        }
+    }
+
+    return NULL;
+}
+
+STATIC UcsXmlVal_t* ParseFile(const char *filename) {
     char *xmlBuffer;
     ssize_t readSize;
     int fdHandle ;
     struct stat fdStat;
-    UcsXmlVal_t* ucsConfig;
-
-    const char *filename = afb_req_value(request, "filename");
-    if (!filename) {
-        afb_req_fail_f (request, "filename-missing", "No filename given");
-        goto OnErrorExit;
-    }
+    UcsXmlVal_t *ucsConfig = NULL;
 
     fdHandle = open(filename, O_RDONLY);
     if (fdHandle <= 0) {
-        afb_req_fail_f (request, "fileread-error", "File not accessible: '%s' err=%s", filename, strerror(fdHandle));
+        AFB_API_ERROR(afbBindingRoot, "File not accessible: '%s' err=%s", filename, strerror(fdHandle));
         goto OnErrorExit;
     }
 
@@ -276,15 +408,16 @@ STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
     xmlBuffer[readSize] = '\0'; /* In any case, terminate it. */
 
     if (readSize != fdStat.st_size)  {
-        afb_req_fail_f (request, "fileread-fail", "File to read fullfile '%s' size(%d!=%d)", filename, readSize, fdStat.st_size);
+        AFB_API_ERROR(afbBindingRoot, "File to read fullfile '%s' size(%d!=%d)", filename, (int)readSize, (int)fdStat.st_size);
         goto OnErrorExit;
     }
 
     ucsConfig = UcsXml_Parse(xmlBuffer);
     if (!ucsConfig)  {
-        afb_req_fail_f (request, "filexml-error", "File XML invalid: '%s'", filename);
+        AFB_API_ERROR(afbBindingRoot, "File XML invalid: '%s'", filename);
         goto OnErrorExit;
     }
+    AFB_API_NOTICE (afbBindingRoot, "Parsing result: %d Nodes, %d Scripts, Ethernet Bandwith %d bytes = %.2f MBit/s", ucsConfig->nodSize, ucsConfig->routesSize, ucsConfig->packetBw, (48 * 8 * ucsConfig->packetBw / 1000.0));
 
     return (ucsConfig);
 
@@ -292,188 +425,375 @@ STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
     return NULL;
 }
 
-STATIC int volOnSvcCB (sd_event_source* source,uint64_t timer, void* pTag) {
-    ucsContextT *ucsContext = (ucsContextT*) pTag;
+PUBLIC int StartConfiguration(const char *filename) {
+    static ucsContextT ucsContext = { 0 };
 
-    sd_event_source_unref(source);
-    UCSI_Vol_Service(&ucsContext->ucsiData);
+    sd_event_source *evtSource;
+    int err;
+
+    /* Read and parse XML file */
+    ucsContext.ucsConfig = ParseFile(filename);
+    if (NULL == ucsContext.ucsConfig) {
+        AFB_API_ERROR (afbBindingRoot, "Cannot access or load file: '%s'", filename);
+        goto OnErrorExit;
+    }
+
+    /* When ucsContextS is set, do not initalize UNICENS, CDEVs or system hooks, just load new XML */
+    if (!ucsContextS)
+    {
+        if (!ucsContextS && !InitializeCdevs(&ucsContext))  {
+            AFB_API_ERROR (afbBindingRoot, "Fail to initialise device [rx=%s tx=%s]", CONTROL_CDEV_RX, CONTROL_CDEV_TX);
+            goto OnErrorExit;
+        }
+
+        /* Initialise UNICENS Config Data Structure */
+        UCSI_Init(&ucsContext.ucsiData, &ucsContext);
+
+        /* register aplayHandle file fd into binder mainloop */
+        err = sd_event_add_io(afb_api_get_event_loop(afbBindingRoot), &evtSource, ucsContext.rx.fileHandle, EPOLLIN, onReadCB, &ucsContext);
+        if (err < 0) {
+            AFB_API_ERROR (afbBindingRoot, "Cannot hook events to mainloop");
+            goto OnErrorExit;
+        }
+
+        /* save this in a statical variable until ucs2vol move to C */
+        ucsContextS = &ucsContext;
+    }
+    /* Initialise UNICENS with parsed config */
+    if (!UCSI_NewConfig(&ucsContext.ucsiData, ucsContext.ucsConfig))   {
+        AFB_API_ERROR (afbBindingRoot, "Fail to initialize UNICENS");
+        goto OnErrorExit;
+    }
 
     return 0;
+
+ OnErrorExit:
+    return -1;
 }
 
-/* This callback is fire each time an volume event wait in the queue */
-void volumeCB (uint16_t timeout) {
-    uint64_t usec;
-    sd_event_now(afb_daemon_get_event_loop(afbIface->daemon), CLOCK_BOOTTIME, &usec);
-    sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, volOnSvcCB, ucsContextS);
+PUBLIC void ucs2_initialise (afb_req_t request) {
+    const char *filename = afb_req_value(request, "filename");
+
+    if (!filename) {
+        afb_req_reply (request, NULL, "filename-missing", "No filename given");
+        goto OnErrorExit;
+    }
+
+    if (StartConfiguration(filename) != 0) {
+        afb_req_reply (request, NULL, "load-failed", "Cannot parse file and start UNICENS");
+        goto OnErrorExit;
+    }
+
+    afb_req_reply(request,NULL, NULL,"UNICENS-active");
+
+ OnErrorExit:
+    return;
 }
 
-STATIC int volSndCmd (struct afb_req request, struct json_object *commandJ, ucsContextT *ucsContext) {
-    int numid, vol, err;
-    struct json_object *nameJ, *channelJ, *volJ;
 
-    enum json_type jtype= json_object_get_type(commandJ);
-    switch (jtype) {
-        case json_type_array:
-            if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 0)), "%d", &numid)) {
-                afb_req_fail_f (request, "channel-invalid","command=%s channel is not an integer", json_object_get_string (channelJ));
-                goto OnErrorExit;
-            }
-            if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 1)), "%d", &vol)) {
-                afb_req_fail_f (request, "vol-invalid","command=%s vol is not an integer", json_object_get_string (channelJ));
-                goto OnErrorExit;
-            }
-            break;
+// List Avaliable Configuration Files
+PUBLIC void ucs2_listconfig (afb_req_t request) {
+    struct json_object *queryJ, *tmpJ, *responseJ;
+    DIR  *dirHandle;
+    char *dirPath, *dirList;
+    int error=0;
 
-        case json_type_object:
-            if (json_object_object_get_ex (commandJ, "numid", &channelJ)) {
-                if (!sscanf (json_object_get_string (channelJ), "%d", &numid)) {
-                    afb_req_fail_f (request, "channel-invalid","command=%s numid is not an integer", json_object_get_string (channelJ));
-                    goto OnErrorExit;
-                }
-            } else {
-                if (json_object_object_get_ex (commandJ, "channel", &nameJ)) {
-                    int idx;
-                    const char *name = json_object_get_string(nameJ);
-
-                    for (idx =0; ucsContext->channels[idx].name != NULL; idx++) {
-                        if (!strcasecmp(ucsContext->channels[idx].name, name)) {
-                            numid = ucsContext->channels[idx].numid;
-                            break;
-                        }
-                    }
-                    if (ucsContext->channels[idx].name == NULL) {
-                        afb_req_fail_f (request, "channel-invalid","command=%s channel name does not exist", name);
-                        goto OnErrorExit;
-                    }
-                } else {
-                    afb_req_fail_f (request, "channel-invalid","command=%s no valid channel name or channel", json_object_get_string(commandJ));
-                    goto OnErrorExit;
-                };
-            }
+    queryJ = afb_req_json(request);
+    if (queryJ && json_object_object_get_ex (queryJ, "cfgpath" , &tmpJ)) {
+        dirList = strdup (json_object_get_string(tmpJ));
+    } else {
+        dirList = strdup (UCS2_CFG_PATH);
+        AFB_API_NOTICE (afbBindingRoot, "fgpath:missing uses UCS2_CFG_PATH=%s", UCS2_CFG_PATH);
+    }
 
-            if (!json_object_object_get_ex (commandJ, "volume", &volJ)) {
-                afb_req_fail_f (request, "vol-missing","command=%s vol not present", json_object_get_string (commandJ));
-                goto OnErrorExit;
-            }
+    responseJ = json_object_new_array();
+    for (dirPath= strtok(dirList, ":"); dirPath && *dirPath; dirPath=strtok(NULL,":")) {
+         struct dirent *dirEnt;
+
+        dirHandle = opendir (dirPath);
+        if (!dirHandle) {
+            AFB_API_NOTICE (afbBindingRoot, "ucs2_listconfig dir=%s not readable", dirPath);
+            error++;
+            continue;
+        }
 
-            if (!sscanf (json_object_get_string (volJ), "%d", &vol)) {
-                afb_req_fail_f (request, "vol-invalid","command=%s vol:%s is not an integer", json_object_get_string (commandJ), json_object_get_string (volJ));
-                goto OnErrorExit;
+        AFB_API_NOTICE (afbBindingRoot, "ucs2_listconfig scanning: %s", dirPath);
+        while ((dirEnt = readdir(dirHandle)) != NULL) {
+            // Unknown type is accepted to support dump filesystems
+            if (dirEnt->d_type == DT_REG || dirEnt->d_type == DT_UNKNOWN) {
+                struct json_object *pathJ = json_object_new_object();
+                json_object_object_add(pathJ, "dirpath", json_object_new_string(dirPath));
+                json_object_object_add(pathJ, "basename", json_object_new_string(dirEnt->d_name));
+                json_object_array_add(responseJ, pathJ);
             }
+        }
+    }
 
-            break;
+    free (dirList);
 
-        default:
-            afb_req_fail_f (request, "setvol-invalid","command=%s not valid JSON Volume Command", json_object_get_string(commandJ));
-            goto OnErrorExit;
+    if (!error)  afb_req_reply(request,responseJ, NULL,NULL);
+    else {
+        char info[40];
+        snprintf (info, sizeof(info), "[%d] where not scanned", error);
+         afb_req_reply(request,responseJ, NULL, info);
     }
 
+    return;
+}
+
+PUBLIC void ucs2_subscribe (afb_req_t request) {
 
-    /* Fulup what's append when channel or vol are invalid ??? */
-    err = UCSI_Vol_Set  (&ucsContext->ucsiData, numid, (uint8_t) vol);
-    if (err) {
-        /* Fulup this might only be a warning (not sure about it) */
-        afb_req_fail_f (request, "vol-refused","command=%s vol was refused by UNICENS", json_object_get_string (volJ));
-        goto OnErrorExit;
+    if (!eventData) {
+
+        eventData = malloc(sizeof(EventData_t));
+        if (eventData) {
+            eventData->node_event = afb_api_make_event (afbBindingRoot, "node-availibility");
+        }
+
+        if (!eventData || !afb_event_is_valid(eventData->node_event)) {
+            afb_req_reply (request, NULL, "create-event", "Cannot create or register event");
+            goto OnExitError;
+        }
     }
 
-    return 0;
+    if (afb_req_subscribe(request, eventData->node_event) != 0) {
 
-  OnErrorExit:
-    return 1;
+        afb_req_reply (request, NULL, "subscribe-event", "Cannot subscribe to event");
+        goto OnExitError;
+    }
+
+    afb_req_reply(request,NULL, NULL,"event subscription successful");
+
+OnExitError:
+    return;
 }
 
+PUBLIC void ucs2_subscriberx (afb_req_t request) {
 
-PUBLIC void ucs2SetVol (struct afb_req request) {
-    struct json_object *queryJ;
-    int err;
+    if (!eventDataRx) {
+
+        eventDataRx = malloc(sizeof(EventDataRx_t));
+        if (eventDataRx) {
+            eventDataRx->rx_event = afb_api_make_event(afbBindingRoot, "rx-message");
+        }
+
+        if (!eventDataRx || !afb_event_is_valid(eventDataRx->rx_event)) {
+            afb_req_reply(request, NULL, "create-event", "Cannot create or register event");
+            goto OnExitError;
+        }
+    }
+
+    if (afb_req_subscribe(request, eventDataRx->rx_event) != 0) {
+
+        afb_req_reply (request, NULL, "subscribe-event", "Cannot subscribe to event");
+        goto OnExitError;
+    }
+
+    afb_req_reply(request,NULL, NULL,"event subscription successful");
 
-    /* check UNICENS is initialised */
-    if (!ucsContextS) {
-        afb_req_fail_f (request, "UNICENS-init","Should Load Config before using setvol");
+OnExitError:
+    return;
+}
+
+static json_object * ucs2_validate_command (afb_req_t request,
+        const char* func_name) {
+
+    struct json_object *j_obj = NULL;
+
+    if (!ucsContextS) {                     /* check UNICENS is initialized */
+        afb_req_reply_f(request, NULL, "unicens-init",
+                "Load a configuration before calling %s.",
+                func_name);
         goto OnErrorExit;
     }
 
-    queryJ = afb_req_json(request);
-    if (!queryJ) {
-        afb_req_fail_f (request, "query-notjson","query=%s not a valid json entry", afb_req_value(request,""));
+    j_obj = afb_req_json(request);
+    if (!j_obj) {
+        afb_req_reply_f(request, NULL,
+                "query-notjson","query=%s not a valid json entry",
+                afb_req_value(request,""));
         goto OnErrorExit;
-    };
-
-    enum json_type jtype= json_object_get_type(queryJ);
-    switch (jtype) {
-        case json_type_array:
-            for (int idx=0; idx < json_object_array_length (queryJ); idx ++) {
-               err= volSndCmd (request, json_object_array_get_idx (queryJ, idx), ucsContextS);
-               if (err) goto OnErrorExit;
-            }
-            break;
+    }
 
-        case json_type_object:
-            err = volSndCmd (request, queryJ, ucsContextS);
-            if (err) goto OnErrorExit;
-            break;
+    AFB_API_DEBUG(afbBindingRoot, "request: %s", json_object_to_json_string(j_obj));
 
-        default:
-            afb_req_fail_f (request, "query-notarray","query=%s not valid JSON Volume Command Array", afb_req_value(request,""));
+    if (json_object_get_type(j_obj)==json_type_array) {
+        int len = json_object_array_length(j_obj);
+
+        if (len == 1) {             /* only support 1 command in array */
+            j_obj = json_object_array_get_idx(j_obj, 0);
+        }
+        else {
+            afb_req_reply_f(request, NULL,
+                    "query-array",
+                    "query of multiple %s commands is not supported",
+                    func_name);
+            j_obj = NULL;
             goto OnErrorExit;
+        }
     }
 
-
-    afb_req_success(request,NULL,NULL);
-
  OnErrorExit:
-    return;
+    return j_obj;
 }
 
+STATIC void ucs2_writei2c_CB (void *result_ptr, void *request_ptr) {
 
-PUBLIC void ucs2Init (struct afb_req request) {
-    static UcsXmlVal_t *ucsConfig;
-    static ucsContextT ucsContext;
+    if (request_ptr){
+        afb_req_t req = request_ptr;
+        Ucs_I2c_ResultCode_t *res = (Ucs_I2c_ResultCode_t *)result_ptr;
 
-    sd_event_source *evtSource;
-    int err;
+        if (!res) {
+            afb_req_reply(req, NULL, "processing","busy or lost initialization");
+        }
+        else if (*res != UCS_I2C_RES_SUCCESS){
+            afb_req_reply_f(req, NULL, "error-result", "result code: %d", *res);
+        }
+        else {
+            afb_req_reply(req, NULL, NULL, "success");
+        }
 
-    /* Read and parse XML file */
-    ucsConfig = ParseFile (request);
-    if (NULL == ucsConfig) goto OnErrorExit;
+        afb_req_unref(req);
+    }
+    else {
+        AFB_API_NOTICE(afbBindingRoot, "write_i2c: ambiguous response data");
+    }
+}
 
-    /* When ucsContextS is set, do not initalize UNICENS, CDEVs or system hooks, just load new XML */
-    if (!ucsContextS)
-    {
-        if (!ucsContextS && !InitializeCdevs(&ucsContext))  {
-            afb_req_fail_f (request, "devnit-error", "Fail to initialise device [rx=%s tx=%s]", CONTROL_CDEV_RX, CONTROL_CDEV_TX);
-            goto OnErrorExit;
-        }
+/* write a single i2c command */
+STATIC void ucs2_writei2c_cmd(afb_req_t request, json_object *j_obj) {
 
-        /* Initialise UNICENS Config Data Structure */
-        UCSI_Init(&ucsContext.ucsiData, &ucsContext);
+    static uint8_t i2c_data[I2C_MAX_DATA_SZ];
+    uint8_t i2c_data_sz = 0;
+    uint16_t node_addr = 0;
+    json_object *j_tmp;
+    json_bool key_found;
 
-        /* register aplayHandle file fd into binder mainloop */
-        err = sd_event_add_io(afb_daemon_get_event_loop(afbIface->daemon), &evtSource, ucsContext.rx.fileHandle, EPOLLIN, onReadCB, &ucsContext);
-        if (err < 0) {
-            afb_req_fail_f (request, "register-mainloop", "Cannot hook events to mainloop");
+    if (json_object_object_get_ex(j_obj, "node", &j_tmp)) {
+        node_addr = (uint16_t)json_object_get_int(j_tmp);
+        AFB_API_NOTICE(afbBindingRoot, "node_address: 0x%02X", node_addr);
+        if (node_addr == 0) {
+            afb_req_reply(request, NULL, "query-params","param node invalid type");
             goto OnErrorExit;
         }
+    }
+    else {
+        afb_req_reply(request, NULL, "query-params","param node missing");
+        goto OnErrorExit;
+    }
 
-        /* init UNICENS Volume Library */
-        ucsContext.channels = UCSI_Vol_Init (&ucsContext.ucsiData, volumeCB);
-        if (!ucsContext.channels) {
-            afb_req_fail_f (request, "register-volume", "Could not enqueue new Unicens config");
-            goto OnErrorExit;
+    key_found = json_object_object_get_ex(j_obj, "data", &j_tmp);
+    if (key_found && (json_object_get_type(j_tmp)==json_type_array)) {
+        int size = json_object_array_length(j_tmp);
+        if ((size > 0) && (size <= I2C_MAX_DATA_SZ)) {
+
+            int32_t i;
+            int32_t val;
+            struct json_object *j_elem;
+
+            for (i = 0; i < size; i++) {
+
+                j_elem = json_object_array_get_idx(j_tmp, i);
+                val = json_object_get_int(j_elem);
+                if ((val < 0) && (val > 0xFF)){
+                    i = 0;
+                    break;
+                }
+                i2c_data[i] = (uint8_t)json_object_get_int(j_elem);
+            }
+
+            i2c_data_sz = (uint8_t)i;
         }
-        /* save this in a statical variable until ucs2vol move to C */
-        ucsContextS = &ucsContext;
     }
-    /* Initialise UNICENS with parsed config */
-    if (!UCSI_NewConfig(&ucsContext.ucsiData, ucsConfig))   {
-        afb_req_fail_f (request, "UNICENS-init", "Fail to initialize UNICENS");
+
+    if (i2c_data_sz == 0) {
+        AFB_API_NOTICE(afbBindingRoot, "data: invalid or not found");
+        afb_req_reply(request, NULL, "query-params","params wrong or missing");
         goto OnErrorExit;
     }
 
-    afb_req_success(request,NULL,"UNICENS-active");
+    if (UCSI_I2CWrite(  &ucsContextS->ucsiData,   /* UCSI_Data_t *pPriv*/
+                        node_addr,                /* uint16_t targetAddress*/
+                        false,                    /* bool isBurst*/
+                        0u,                       /* block count */
+                        0x2Au,                    /* i2c slave address */
+                        0x03E8u,                  /* timeout 1000 milliseconds */
+                        i2c_data_sz,              /* uint8_t dataLen */
+                        &i2c_data[0],             /* uint8_t *pData */
+                        &ucs2_writei2c_CB,        /* callback*/
+                        (void*)request            /* callback argument */
+                  )) {
+        /* asynchronous command is running */
+        afb_req_addref(request);
+    }
+    else {
+        AFB_API_NOTICE(afbBindingRoot, "i2c write: scheduling command failed");
+        afb_req_reply(request, NULL, "query-command-queue","command queue overload");
+        goto OnErrorExit;
+    }
 
- OnErrorExit:
+OnErrorExit:
     return;
 }
+
+/* parse array or single command */
+PUBLIC void ucs2_writei2c (afb_req_t request) {
+
+    struct json_object *j_obj;
+
+    j_obj = ucs2_validate_command(request, "writei2c");
+
+    if (j_obj) {
+        ucs2_writei2c_cmd(request, j_obj);
+    }
+}
+
+PUBLIC void ucs2_sendmessage(afb_req_t req) {
+    uint8_t *data_ptr = NULL;
+    size_t data_sz = 0;
+    int ret, node_addr, msg_id  = 0;
+    struct json_object *j_obj;
+
+    j_obj = ucs2_validate_command(req, "sendmessageb64");
+
+    if (!j_obj) {
+        AFB_API_NOTICE(afbBindingRoot, "validation of command failed");
+        goto OnErrorExit;
+    }
+
+    ret = wrap_json_unpack(j_obj, "{s:i, s:i, s?Y}", "node", &node_addr, "msgid", &msg_id, "data", &data_ptr, &data_sz);
+
+    if ((ret==0) &&
+        UCSI_SendAmsMessage(&ucsContextS->ucsiData, msg_id, node_addr, &data_ptr[0], data_sz)
+            ) {
+        afb_req_reply(req, NULL, NULL, "sendmessageb64 started successful");
+    }
+    else {
+        AFB_API_ERROR(afbBindingRoot, "sendmessageb64: scheduling command failed. ret: %d", ret);
+        afb_req_reply(req, NULL, "query-command-queue","ambiguous command or queue overload");
+        goto OnErrorExit;
+    }
+
+OnErrorExit:
+    if (data_ptr) {
+        free(data_ptr);
+    }
+    return;
+}
+
+PUBLIC int ucs2_initbinding(afb_api_t api) {
+#ifndef DISABLE_AUTOSTART
+    char *filename = GetDefaultConfig();
+    if (filename != NULL) {
+
+        AFB_API_NOTICE(afbBindingRoot, "AUTO-LOAD configuration: %s", filename);
+        if (StartConfiguration(filename) == 0) {
+            AFB_API_NOTICE(afbBindingRoot, "AUTO-LOAD successful");
+        } else {
+            AFB_API_NOTICE(afbBindingRoot, "AUTO-LOAD failed");
+        }
+        free(filename);
+    }
+#endif
+    return 0;
+}