2 * Copyright (C) 2016 "IoT.bzh"
3 * Author Fulup Ar Foll <fulup@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 * https://gist.github.com/ghedo/963382
19 * http://alsa-utils.sourcearchive.com/documentation/1.0.15/aplay_8c-source.html
24 #define BUFFER_FRAME_COUNT 10 /* max frames in buffer */
25 #define WAIT_TIMER_US 1000000 /* default waiting timer 1s */
26 #define I2C_MAX_DATA_SZ 32 /* max. number of bytes to be written to i2c */
28 #include <systemd/sd-event.h>
29 #include <sys/types.h>
40 #include "ucs_binding.h"
41 #include "ucs_interface.h"
43 #define MAX_FILENAME_LEN (100)
44 #define RX_BUFFER (64)
46 /** Internal structure, enabling multiple instances of this component.
47 * \note Do not access any of this variables.
52 char fileName[MAX_FILENAME_LEN];
53 uint8_t rxBuffer[RX_BUFFER];
65 struct afb_event node_event;
69 static ucsContextT *ucsContextS;
70 static EventData_t *eventData = NULL;
72 PUBLIC void UcsXml_CB_OnError(const char format[], uint16_t vargsCnt, ...) {
73 /*AFB_DEBUG (afbIface, format, args); */
75 va_start (args, vargsCnt);
76 vfprintf (stderr, format, args);
81 va_start(argptr, vargsCnt);
82 vsprintf(outbuf, format, argptr);
87 PUBLIC uint16_t UCSI_CB_OnGetTime(void *pTag) {
88 struct timespec currentTime;
92 if (clock_gettime(CLOCK_MONOTONIC_RAW, ¤tTime)) {
97 timer = (uint16_t) ((currentTime.tv_sec * 1000 ) + ( currentTime.tv_nsec / 1000000 ));
101 STATIC int onTimerCB (sd_event_source* source,uint64_t timer, void* pTag) {
102 ucsContextT *ucsContext = (ucsContextT*) pTag;
104 sd_event_source_unref(source);
105 UCSI_Timeout(&ucsContext->ucsiData);
110 void UCSI_CB_OnNetworkState(void *pTag, bool isAvailable, uint16_t packetBandwidth, uint8_t amountOfNodes)
114 /* UCS2 Interface Timer Callback */
115 PUBLIC void UCSI_CB_OnSetServiceTimer(void *pTag, uint16_t timeout) {
117 /* set a timer with 250ms accuracy */
118 sd_event_now(afb_daemon_get_event_loop(), CLOCK_BOOTTIME, &usec);
119 sd_event_add_time(afb_daemon_get_event_loop(), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, onTimerCB, pTag);
124 * \brief Callback when ever an Unicens forms a human readable message.
125 * This can be error events or when enabled also debug messages.
126 * \note This function must be implemented by the integrator
127 * \param pTag - Pointer given by the integrator by UCSI_Init
128 * \param format - Zero terminated format string (following printf rules)
129 * \param vargsCnt - Amount of parameters stored in "..."
131 void UCSI_CB_OnUserMessage(void *pTag, bool isError, const char format[],
132 uint16_t vargsCnt, ...) {
136 va_start(argptr, vargsCnt);
137 vsprintf(outbuf, format, argptr);
143 /** UCSI_Service cannot be called directly within UNICENS context, need to service stack through mainloop */
144 STATIC int OnServiceRequiredCB (sd_event_source *source, uint64_t usec, void *pTag) {
145 ucsContextT *ucsContext = (ucsContextT*) pTag;
147 sd_event_source_unref(source);
148 UCSI_Service(&ucsContext->ucsiData);
152 /* UCS Callback fire when ever UNICENS needs to be serviced */
153 PUBLIC void UCSI_CB_OnServiceRequired(void *pTag) {
155 /* push an asynchronous request for loopback to call UCSI_Service */
156 sd_event_add_time(afb_daemon_get_event_loop(), NULL, CLOCK_MONOTONIC, 0, 0, OnServiceRequiredCB, pTag);
159 /* Callback when ever this UNICENS wants to send a message to INIC. */
160 PUBLIC void UCSI_CB_OnTxRequest(void *pTag, const uint8_t *pData, uint32_t len) {
161 ucsContextT *ucsContext = (ucsContextT*) pTag;
162 CdevData_t *cdevTx = &ucsContext->tx;
165 if (NULL == pData || 0 == len) return;
167 if (O_RDONLY == cdevTx->fileFlags) return;
168 if (-1 == cdevTx->fileHandle)
169 cdevTx->fileHandle = open(cdevTx->fileName, cdevTx->fileFlags);
170 if (-1 == cdevTx->fileHandle)
174 ssize_t written = write(cdevTx->fileHandle, &pData[total], (len - total));
177 /* Silently ignore write error (only occur in non-blocking mode) */
180 total += (uint32_t) written;
185 * \brief Callback when UNICENS instance has been stopped.
186 * \note This event can be used to free memory holding the resources
187 * passed with UCSI_NewConfig
188 * \note This function must be implemented by the integrator
189 * \param pTag - Pointer given by the integrator by UCSI_Init
191 void UCSI_CB_OnStop(void *pTag) {
192 AFB_NOTICE ("UNICENS stopped");
196 /** This callback will be raised, when ever an applicative message on the control channel arrived */
197 void UCSI_CB_OnAmsMessageReceived(void *pTag)
199 /* If not interested, just ignore this event.
200 Otherwise UCSI_GetAmsMessage may now be called asynchronous (mainloop) to get the content.
201 Don't forget to call UCSI_ReleaseAmsMessage after that */
204 void UCSI_CB_OnRouteResult(void *pTag, uint16_t routeId, bool isActive, uint16_t connectionLabel)
208 void UCSI_CB_OnGpioStateChange(void *pTag, uint16_t nodeAddress, uint8_t gpioPinId, bool isHighState)
212 PUBLIC void UCSI_CB_OnMgrReport(void *pTag, Ucs_MgrReport_t code, uint16_t nodeAddress, Ucs_Rm_Node_t *pNode){
216 if (code == UCS_MGR_REP_AVAILABLE) {
219 else if (code == UCS_MGR_REP_NOT_AVAILABLE) {
223 /*untracked event - just exit*/
229 json_object *j_event_info = json_object_new_object();
230 json_object_object_add(j_event_info, "node", json_object_new_int(nodeAddress));
231 json_object_object_add(j_event_info, "available", json_object_new_boolean(available));
233 afb_event_push(eventData->node_event, j_event_info);
237 bool Cdev_Init(CdevData_t *d, const char *fileName, bool read, bool write)
239 if (NULL == d || NULL == fileName) goto OnErrorExit;
241 memset(d, 0, sizeof(CdevData_t));
242 strncpy(d->fileName, fileName, MAX_FILENAME_LEN);
246 d->fileFlags = O_RDWR | O_NONBLOCK;
248 d->fileFlags = O_RDONLY | O_NONBLOCK;
250 d->fileFlags = O_WRONLY | O_NONBLOCK;
252 /* open file to enable event loop */
253 d->fileHandle = open(d->fileName, d->fileFlags);
254 if (d->fileHandle <= 0) goto OnErrorExit;
262 static bool InitializeCdevs(ucsContextT *ucsContext)
264 if(!Cdev_Init(&ucsContext->tx, CONTROL_CDEV_TX, false, true))
266 if(!Cdev_Init(&ucsContext->rx, CONTROL_CDEV_RX, true, false))
271 /* Callback fire when something is avaliable on MOST cdev */
272 int onReadCB (sd_event_source* src, int fileFd, uint32_t revents, void* pTag) {
273 ucsContextT *ucsContext =( ucsContextT*) pTag;
275 uint8_t pBuffer[RX_BUFFER];
278 len = read (ucsContext->rx.fileHandle, &pBuffer, sizeof(pBuffer));
281 ok= UCSI_ProcessRxData(&ucsContext->ucsiData, pBuffer, (uint16_t)len);
283 AFB_DEBUG ("Buffer overrun (not handle)");
284 /* Buffer overrun could replay pBuffer */
289 STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
294 UcsXmlVal_t* ucsConfig;
296 const char *filename = afb_req_value(request, "filename");
298 afb_req_fail_f (request, "filename-missing", "No filename given");
302 fdHandle = open(filename, O_RDONLY);
304 afb_req_fail_f (request, "fileread-error", "File not accessible: '%s' err=%s", filename, strerror(fdHandle));
308 /* read file into buffer as a \0 terminated string */
309 fstat(fdHandle, &fdStat);
310 xmlBuffer = (char*)alloca(fdStat.st_size + 1);
311 readSize = read(fdHandle, xmlBuffer, fdStat.st_size);
313 xmlBuffer[readSize] = '\0'; /* In any case, terminate it. */
315 if (readSize != fdStat.st_size) {
316 afb_req_fail_f (request, "fileread-fail", "File to read fullfile '%s' size(%d!=%d)", filename, (int)readSize, (int)fdStat.st_size);
320 ucsConfig = UcsXml_Parse(xmlBuffer);
322 afb_req_fail_f (request, "filexml-error", "File XML invalid: '%s'", filename);
332 PUBLIC void ucs2_initialise (struct afb_req request) {
333 static UcsXmlVal_t *ucsConfig;
334 static ucsContextT ucsContext;
336 sd_event_source *evtSource;
339 /* Read and parse XML file */
340 ucsConfig = ParseFile (request);
341 if (NULL == ucsConfig) goto OnErrorExit;
343 /* When ucsContextS is set, do not initalize UNICENS, CDEVs or system hooks, just load new XML */
346 if (!ucsContextS && !InitializeCdevs(&ucsContext)) {
347 afb_req_fail_f (request, "devnit-error", "Fail to initialise device [rx=%s tx=%s]", CONTROL_CDEV_RX, CONTROL_CDEV_TX);
351 /* Initialise UNICENS Config Data Structure */
352 UCSI_Init(&ucsContext.ucsiData, &ucsContext);
354 /* register aplayHandle file fd into binder mainloop */
355 err = sd_event_add_io(afb_daemon_get_event_loop(), &evtSource, ucsContext.rx.fileHandle, EPOLLIN, onReadCB, &ucsContext);
357 afb_req_fail_f (request, "register-mainloop", "Cannot hook events to mainloop");
361 /* save this in a statical variable until ucs2vol move to C */
362 ucsContextS = &ucsContext;
364 /* Initialise UNICENS with parsed config */
365 if (!UCSI_NewConfig(&ucsContext.ucsiData, ucsConfig)) {
366 afb_req_fail_f (request, "UNICENS-init", "Fail to initialize UNICENS");
370 afb_req_success(request,NULL,"UNICENS-active");
377 // List Avaliable Configuration Files
378 PUBLIC void ucs2_listconfig (struct afb_req request) {
379 struct json_object *queryJ, *tmpJ, *responseJ;
381 char *dirPath, *dirList;
384 queryJ = afb_req_json(request);
385 if (queryJ && json_object_object_get_ex (queryJ, "cfgpath" , &tmpJ)) {
386 dirList = strdup (json_object_get_string(tmpJ));
388 dirList = strdup (UCS2_CFG_PATH);
389 AFB_NOTICE ("fgpath:missing uses UCS2_CFG_PATH=%s", UCS2_CFG_PATH);
392 responseJ = json_object_new_array();
393 for (dirPath= strtok(dirList, ":"); dirPath && *dirPath; dirPath=strtok(NULL,":")) {
394 struct dirent *dirEnt;
396 dirHandle = opendir (dirPath);
398 AFB_NOTICE ("ucs2_listconfig dir=%s not readable", dirPath);
403 AFB_NOTICE ("ucs2_listconfig scanning: %s", dirPath);
404 while ((dirEnt = readdir(dirHandle)) != NULL) {
405 // Unknown type is accepted to support dump filesystems
406 if (dirEnt->d_type == DT_REG || dirEnt->d_type == DT_UNKNOWN) {
407 struct json_object *pathJ = json_object_new_object();
408 json_object_object_add(pathJ, "dirpath", json_object_new_string(dirPath));
409 json_object_object_add(pathJ, "basename", json_object_new_string(dirEnt->d_name));
410 json_object_array_add(responseJ, pathJ);
417 if (!error) afb_req_success(request,responseJ,NULL);
420 snprintf (info, sizeof(info), "[%d] where not scanned", error);
421 afb_req_success(request,responseJ, info);
427 PUBLIC void ucs2_subscribe (struct afb_req request) {
431 eventData = malloc(sizeof(EventData_t));
433 eventData->node_event = afb_daemon_make_event ("node-availibility");
436 if (!eventData || !afb_event_is_valid(eventData->node_event)) {
437 afb_req_fail_f (request, "create-event", "Cannot create or register event");
442 if (afb_req_subscribe(request, eventData->node_event) != 0) {
444 afb_req_fail_f (request, "subscribe-event", "Cannot subscribe to event");
448 afb_req_success(request,NULL,"event subscription successful");
454 STATIC void ucs2_writei2c_CB (void *result_ptr, void *request_ptr) {
457 afb_req *req = (afb_req *)request_ptr;
458 Ucs_I2c_ResultCode_t *res = (Ucs_I2c_ResultCode_t *)result_ptr;
461 afb_req_fail(*req, "processing","busy or lost initialization");
463 else if (*res != UCS_I2C_RES_SUCCESS){
464 afb_req_fail_f(*req, "error-result", "result code: %d", *res);
467 afb_req_success(*req, NULL, "success");
474 AFB_NOTICE("write_i2c: ambiguous response data");
478 /* write a single i2c command */
479 STATIC void ucs2_writei2c_cmd(struct afb_req request, json_object *j_obj) {
481 static uint8_t i2c_data[I2C_MAX_DATA_SZ];
482 uint8_t i2c_data_sz = 0;
483 uint16_t node_addr = 0;
484 struct afb_req *async_req_ptr = NULL;
486 node_addr = (uint16_t)json_object_get_int(json_object_object_get(j_obj, "node"));
487 AFB_NOTICE("node_address: 0x%02X", node_addr);
489 if (node_addr == 0) {
490 afb_req_fail_f(request, "query-params","params wrong or missing");
494 if (json_object_get_type(json_object_object_get(j_obj, "data"))==json_type_array) {
495 int size = json_object_array_length(json_object_object_get(j_obj, "data"));
496 if ((size > 0) && (size <= I2C_MAX_DATA_SZ)) {
500 struct json_object *j_elem;
501 struct json_object *j_arr = json_object_object_get(j_obj, "data");
503 for (i = 0; i < size; i++) {
506 j_elem = json_object_array_get_idx(j_arr, i);
507 val = json_object_get_int(j_elem);
508 if ((val < 0) && (val > 0xFF)){
512 i2c_data[i] = (uint8_t)json_object_get_int(j_elem);
515 i2c_data_sz = (uint8_t)i;
519 if (i2c_data_sz == 0) {
520 AFB_NOTICE("data: invalid or not found");
521 afb_req_fail_f(request, "query-params","params wrong or missing");
525 async_req_ptr = malloc(sizeof(afb_req));
526 *async_req_ptr = request;
528 if (UCSI_I2CWrite( &ucsContextS->ucsiData, /* UCSI_Data_t *pPriv*/
529 node_addr, /* uint16_t targetAddress*/
530 false, /* bool isBurst*/
531 0u, /* block count */
532 0x2Au, /* i2c slave address */
533 0x03E8u, /* timeout 1000 milliseconds */
534 i2c_data_sz, /* uint8_t dataLen */
535 &i2c_data[0], /* uint8_t *pData */
536 &ucs2_writei2c_CB, /* callback*/
537 (void*)async_req_ptr /* callback argument */
539 /* asynchronous command is running */
540 afb_req_addref(request);
543 AFB_NOTICE("i2c write: scheduling command failed");
544 afb_req_fail_f(request, "query-command-queue","command queue overload");
546 async_req_ptr = NULL;
554 /* parse array or single command */
555 PUBLIC void ucs2_writei2c (struct afb_req request) {
557 struct json_object *j_obj;
559 /* check UNICENS is initialised */
561 afb_req_fail_f(request, "unicens-init","Should Load Config before using setvol");
565 j_obj = afb_req_json(request);
567 afb_req_fail_f(request, "query-notjson","query=%s not a valid json entry", afb_req_value(request,""));
571 AFB_DEBUG("request: %s", json_object_to_json_string(j_obj));
573 if (json_object_get_type(j_obj)==json_type_array) {
576 int len = json_object_array_length(j_obj);
579 afb_req_fail_f(request, "query-array","query of multiple commands is not supported");
583 for (cnt = 0; cnt < len; cnt++) {
585 json_object *j_cmd = json_object_array_get_idx(j_obj, cnt);
586 ucs2_writei2c_cmd(request, j_cmd);
590 ucs2_writei2c_cmd(request, j_obj);