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 bool run_loop_exit_requested; 69 70 static uint32_t btstack_run_loop_wiced_get_time_ms(void){ 71 wiced_time_t time; 72 wiced_time_get_time(&time); 73 return time; 74 } 75 76 // set timer 77 static void btstack_run_loop_wiced_set_timer(btstack_timer_source_t *ts, uint32_t timeout_in_ms){ 78 ts->timeout = btstack_run_loop_wiced_get_time_ms() + timeout_in_ms + 1; 79 } 80 81 // schedules execution similar to wiced_rtos_send_asynchronous_event for worker threads 82 void btstack_run_loop_wiced_execute_code_on_main_thread(wiced_result_t (*fn)(void *arg), void * arg){ 83 function_call_t message; 84 message.fn = fn; 85 message.arg = arg; 86 wiced_rtos_push_to_queue(&btstack_run_loop_queue, &message, WICED_NEVER_TIMEOUT); 87 } 88 89 /** 90 * Execute run_loop 91 */ 92 static void btstack_run_loop_wiced_execute(void) { 93 while (run_loop_exit_requested == false) { 94 95 // process timers 96 uint32_t now = btstack_run_loop_wiced_get_time_ms(); 97 btstack_run_loop_base_process_timers(now); 98 99 // get time until next timeout 100 int32_t timeout_next_timer_ms = btstack_run_loop_base_get_time_until_timeout(now); 101 uint32_t timeout_ms = WICED_NEVER_TIMEOUT; 102 if (timeout_next_timer_ms >= 0){ 103 timeout_ms = (uint32_t) timeout_next_timer_ms; 104 } 105 106 // pop function call 107 function_call_t message = { NULL, NULL }; 108 wiced_rtos_pop_from_queue( &btstack_run_loop_queue, &message, timeout_ms); 109 if (message.fn){ 110 // execute code on run loop 111 message.fn(message.arg); 112 } 113 } 114 } 115 116 117 static void btstack_run_loop_wiced_trigger_exit(void){ 118 run_loop_exit_requested = true; 119 } 120 121 static void btstack_run_loop_wiced_btstack_run_loop_init(void){ 122 btstack_run_loop_base_init(); 123 124 // queue to receive events: up to 2 calls from transport, up to 3 for app 125 wiced_rtos_init_queue(&btstack_run_loop_queue, "BTstack Run Loop", sizeof(function_call_t), 5); 126 } 127 128 /** 129 * @brief Provide btstack_run_loop_posix instance for use with btstack_run_loop_init 130 */ 131 const btstack_run_loop_t * btstack_run_loop_wiced_get_instance(void){ 132 return &btstack_run_loop_wiced; 133 } 134 135 static const btstack_run_loop_t btstack_run_loop_wiced = { 136 &btstack_run_loop_wiced_btstack_run_loop_init, 137 NULL, 138 NULL, 139 NULL, 140 NULL, 141 &btstack_run_loop_wiced_set_timer, 142 &btstack_run_loop_base_add_timer, 143 &btstack_run_loop_base_remove_timer, 144 &btstack_run_loop_wiced_execute, 145 &btstack_run_loop_base_dump_timer, 146 &btstack_run_loop_wiced_get_time_ms, 147 NULL, /* poll data sources from irq */ 148 NULL, 149 btstack_run_loop_wiced_trigger_exit 150 }; 151