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/*
* Copyright 2019 Microchip Technology Inc. and its subsidiaries
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <wrap-json.h>
#include "wrap-unicens.h"
typedef struct async_job_ {
wrap_ucs_result_cb_t result_fptr;
void *result_user_ptr;
} async_job_t;
typedef struct parse_result_ {
int done;
char *str_result;
} parse_result_t;
static afb_api_t api_handle_ = NULL;
/* Initializes UNICENS API wrapper */
extern int wrap_ucs_init(afb_api_t api_handle) {
api_handle_ = api_handle;
return afb_api_require_api(api_handle_, "UNICENS", 1);
}
/*
* Subscribes to unicens2-binding events.
* \return Returns 0 if successful, otherwise != 0".
*/
extern int wrap_ucs_subscribe_sync(void) {
int err;
json_object *j_response, *j_query = NULL;
char *error, *info;
/* Build an empty JSON object */
if((err = wrap_json_pack(&j_query, "{}"))) {
AFB_API_ERROR(api_handle_, "Failed to create subscribe json object");
return err;
}
if((err = afb_api_call_sync(api_handle_, "UNICENS", "subscribe", j_query, &j_response, &error, &info))) {
AFB_API_ERROR(api_handle_, "Fail subscribing to UNICENS events");
return err;
}
else {
AFB_API_NOTICE(api_handle_, "Subscribed to UNICENS events, res=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
return 0;
}
extern int wrap_ucs_interpret_event(const char *event, struct json_object *object, wrap_ucs_availability_cb_t callback) {
int node_id = 0;
int available = false;
if (strcmp(event, "UNICENS/node-availibility") != 0) {
return -1; // unhandled event
}
if (wrap_json_unpack(object, "{s:i,s:b}", "node", &node_id, "available", &available) != 0) {
AFB_API_NOTICE(api_handle_, "Parsing node-availibility failed.");
return -2;
}
if (callback != NULL) {
callback((uint16_t)node_id, (bool)available);
}
return 0;
}
/*
* Write I2C command to a network node.
* \param node Node address
* \param ata_ptr Reference to command data
* \param data_sz Size of the command data. Valid values: 1..32.
* \return Returns 0 if successful, otherwise != 0".
*/
extern int wrap_ucs_i2cwrite_sync(uint16_t node, uint8_t *data_ptr, uint8_t data_sz) {
int err;
uint8_t cnt;
json_object *j_response, *j_query, *j_array = NULL;
char *error, *info;
j_query = json_object_new_object();
j_array = json_object_new_array();
if(! j_query || ! j_array) {
AFB_API_ERROR(api_handle_, "Failed to create writei2c json objects");
return -1;
}
for(cnt = 0U; cnt < data_sz; cnt++)
json_object_array_add(j_array, json_object_new_int(data_ptr[cnt]));
json_object_object_add(j_query, "node", json_object_new_int(node));
json_object_object_add(j_query, "data", j_array);
if((err = afb_api_call_sync(api_handle_, "UNICENS", "writei2c", j_query, &j_response, &error, &info))) {
AFB_API_ERROR(api_handle_, "Failed to call writei2c_sync");
return err;
}
else {
AFB_API_INFO(api_handle_, "Called writei2c_sync, res=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
return 0;
}
extern int wrap_ucs_sendmessage_sync(uint16_t src_addr, uint16_t msg_id, uint8_t *data_ptr, uint8_t data_sz) {
json_object *j_query, *j_response = NULL;
char *error, *info;
int err = 1;
int node = (int)src_addr;
int msgid = (int)msg_id;
size_t data_size = (size_t)data_sz;
AFB_API_NOTICE(api_handle_, "--- HAL triggering send message ---");
/* 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_API_NOTICE(api_handle_, "wrap_ucs_sendmessage: jquery=%s", json_object_to_json_string(j_query));
err = afb_api_call_sync(api_handle_, "UNICENS", "sendmessage", j_query, &j_response, &error, &info);
if (err != 0) {
AFB_API_ERROR(api_handle_, "Failed to call wrap_ucs_sendmessage ret=%d", err);
}
else {
AFB_API_NOTICE(api_handle_, "Called wrap_ucs_sendmessage, successful");
}
if (j_response != NULL) {
AFB_API_NOTICE(api_handle_, "wrap_ucs_sendmessage, response=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
return err;
}
/* ---------------------------- ASYNCHRONOUS API ---------------------------- */
static void wrap_ucs_i2cwrite_cb(void *closure, /*int status, */struct json_object *j_result,
const char *error, const char * info, afb_api_t api) {
async_job_t *job_ptr;
AFB_API_INFO(api_handle_, "%s: closure=%p status=?, res=%s", __func__, closure, /*status,*/ json_object_to_json_string(j_result));
if(closure) {
job_ptr = (async_job_t *) closure;
if(job_ptr->result_fptr)
job_ptr->result_fptr(0/*(uint8_t) abs(status)*/, job_ptr->result_user_ptr);
free(closure);
}
}
/*
* Write I2C command to a network node.
* \param node Node address
* \param data_ptr Reference to command data
* \param data_sz Size of the command data. Valid values: 1..32.
* \return Returns 0 if successful, otherwise != 0".
*/
extern int wrap_ucs_i2cwrite(uint16_t node,
uint8_t *data_ptr,
uint8_t data_sz,
wrap_ucs_result_cb_t result_fptr,
void *result_user_ptr)
{
uint8_t cnt;
json_object *j_query, *j_array = NULL;
async_job_t *job_ptr = NULL;
j_query = json_object_new_object();
j_array = json_object_new_array();
if(! j_query || ! j_array) {
AFB_API_ERROR(api_handle_, "Failed to create writei2c json objects");
return -1;
}
for(cnt = 0U; cnt < data_sz; cnt++)
json_object_array_add(j_array, json_object_new_int(data_ptr[cnt]));
json_object_object_add(j_query, "node", json_object_new_int(node));
json_object_object_add(j_query, "data", j_array);
job_ptr = malloc(sizeof(async_job_t));
if(! job_ptr) {
AFB_API_ERROR(api_handle_, "Failed to create async job object");
json_object_put(j_query);
return -2;
}
job_ptr->result_fptr = result_fptr;
job_ptr->result_user_ptr = result_user_ptr;
afb_api_call(api_handle_, "UNICENS", "writei2c", j_query, wrap_ucs_i2cwrite_cb, job_ptr);
return 0;
}
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