1 /* 2 * Copyright (C) 2015 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "btstack_run_loop_wiced.c" 39 40 /* 41 * btstack_run_loop_wiced.c 42 * 43 * Run loop for Broadcom WICED SDK which currently supports FreeRTOS and ThreadX 44 * WICED 3.3.1 does not support Event Flags on FreeRTOS so a queue is used instead 45 */ 46 47 #include "wiced.h" 48 49 #include "btstack_run_loop_wiced.h" 50 51 #include "btstack_linked_list.h" 52 #include "btstack_debug.h" 53 #include "btstack_util.h" 54 #include "btstack_run_loop.h" 55 56 #include <stddef.h> // NULL 57 58 typedef struct function_call { 59 wiced_result_t (*fn)(void * arg); 60 void * arg; 61 } function_call_t; 62 63 static const btstack_run_loop_t btstack_run_loop_wiced; 64 65 static wiced_queue_t btstack_run_loop_queue; 66 67 // the run loop 68 static uint32_t btstack_run_loop_wiced_get_time_ms(void){ 69 wiced_time_t time; 70 wiced_time_get_time(&time); 71 return time; 72 } 73 74 // set timer 75 static void btstack_run_loop_wiced_set_timer(btstack_timer_source_t *ts, uint32_t timeout_in_ms){ 76 ts->timeout = btstack_run_loop_wiced_get_time_ms() + timeout_in_ms + 1; 77 } 78 79 // schedules execution similar to wiced_rtos_send_asynchronous_event for worker threads 80 void btstack_run_loop_wiced_execute_code_on_main_thread(wiced_result_t (*fn)(void *arg), void * arg){ 81 function_call_t message; 82 message.fn = fn; 83 message.arg = arg; 84 wiced_rtos_push_to_queue(&btstack_run_loop_queue, &message, WICED_NEVER_TIMEOUT); 85 } 86 87 /** 88 * Execute run_loop 89 */ 90 static void btstack_run_loop_wiced_execute(void) { 91 while (true) { 92 93 // process timers 94 uint32_t now = btstack_run_loop_wiced_get_time_ms(); 95 btstack_run_loop_base_process_timers(now); 96 97 // get time until next timeout 98 int32_t timeout_next_timer_ms = btstack_run_loop_base_get_time_until_timeout(now); 99 uint32_t timeout_ms = WICED_NEVER_TIMEOUT; 100 if (timeout_next_timer_ms >= 0){ 101 timeout_ms = (uint32_t) timeout_next_timer_ms; 102 } 103 104 // pop function call 105 function_call_t message = { NULL, NULL }; 106 wiced_rtos_pop_from_queue( &btstack_run_loop_queue, &message, timeout_ms); 107 if (message.fn){ 108 // execute code on run loop 109 message.fn(message.arg); 110 } 111 } 112 } 113 114 static void btstack_run_loop_wiced_btstack_run_loop_init(void){ 115 btstack_run_loop_base_init(); 116 117 // queue to receive events: up to 2 calls from transport, up to 3 for app 118 wiced_rtos_init_queue(&btstack_run_loop_queue, "BTstack Run Loop", sizeof(function_call_t), 5); 119 } 120 121 /** 122 * @brief Provide btstack_run_loop_posix instance for use with btstack_run_loop_init 123 */ 124 const btstack_run_loop_t * btstack_run_loop_wiced_get_instance(void){ 125 return &btstack_run_loop_wiced; 126 } 127 128 static const btstack_run_loop_t btstack_run_loop_wiced = { 129 &btstack_run_loop_wiced_btstack_run_loop_init, 130 NULL, 131 NULL, 132 NULL, 133 NULL, 134 &btstack_run_loop_wiced_set_timer, 135 &btstack_run_loop_base_add_timer, 136 &btstack_run_loop_base_remove_timer, 137 &btstack_run_loop_wiced_execute, 138 &btstack_run_loop_base_dump_timer, 139 &btstack_run_loop_wiced_get_time_ms, 140 }; 141