1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** GUIX Component */ 17 /** */ 18 /** System Management (System) */ 19 /** */ 20 /**************************************************************************/ 21 22 #define GX_SOURCE_CODE 23 24 25 /* Include necessary system files. */ 26 27 #include "gx_api.h" 28 #include "gx_system.h" 29 #include "gx_animation.h" 30 31 32 /**************************************************************************/ 33 /* */ 34 /* FUNCTION RELEASE */ 35 /* */ 36 /* _gx_system_timer_update PORTABLE C */ 37 /* 6.1 */ 38 /* AUTHOR */ 39 /* */ 40 /* Kenneth Maxwell, Microsoft Corporation */ 41 /* */ 42 /* DESCRIPTION */ 43 /* */ 44 /* This function is called when the GUIX timers need to be updated. */ 45 /* It updates all of the GUIX application timers, and sends events */ 46 /* as needed. */ 47 /* */ 48 /* INPUT */ 49 /* */ 50 /* None */ 51 /* */ 52 /* OUTPUT */ 53 /* */ 54 /* None */ 55 /* */ 56 /* CALLS */ 57 /* */ 58 /* _gx_system_lock Lock system mutex */ 59 /* _gx_system_unlock Unlock system mutex */ 60 /* [gx_widget_event_process_function] Event handler of timer owner */ 61 /* _gx_system_timer_stop Stop the system timer */ 62 /* _gx_animation_update Update the animation sequence */ 63 /* */ 64 /* CALLED BY */ 65 /* */ 66 /* tx_timer */ 67 /* */ 68 /* RELEASE HISTORY */ 69 /* */ 70 /* DATE NAME DESCRIPTION */ 71 /* */ 72 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 73 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 74 /* resulting in version 6.1 */ 75 /* */ 76 /**************************************************************************/ _gx_system_timer_update(ULONG ticks)77VOID _gx_system_timer_update(ULONG ticks) 78 { 79 GX_TIMER *current_timer; 80 GX_TIMER *next_timer; 81 GX_WIDGET *timer_owner; 82 UINT timer_id; 83 GX_EVENT timer_event; 84 85 GX_ENTER_CRITICAL 86 87 current_timer = _gx_system_active_timer_list; 88 89 timer_event.gx_event_type = GX_EVENT_TIMER; 90 91 while (current_timer) 92 { 93 next_timer = current_timer -> gx_timer_next; 94 95 /* has this timer expired? */ 96 if (current_timer -> gx_timer_initial_ticks > ticks) 97 { 98 /* just decrement the timer */ 99 current_timer -> gx_timer_initial_ticks -= ticks; 100 } 101 else 102 { 103 /* timer has expired, call the timer owner's event handler */ 104 timer_owner = current_timer -> gx_timer_owner; 105 timer_id = current_timer -> gx_timer_id; 106 107 /* check to see if this timer should be removed or restarted */ 108 109 if (current_timer -> gx_timer_reschedule_ticks > 0) 110 { 111 /* reload the timer */ 112 current_timer -> gx_timer_initial_ticks = current_timer -> gx_timer_reschedule_ticks; 113 } 114 else 115 { 116 /* remove the timer */ 117 _gx_system_timer_stop(current_timer -> gx_timer_owner, current_timer -> gx_timer_id); 118 } 119 120 if (timer_owner != GX_NULL && timer_owner -> gx_widget_event_process_function) 121 { 122 timer_event.gx_event_payload.gx_event_timer_id = timer_id; 123 timer_event.gx_event_target = timer_owner; 124 /*_gx_system_event_fold(&timer_event);*/ 125 _gx_system_event_send(&timer_event); 126 } 127 } 128 current_timer = next_timer; 129 } 130 131 if (_gx_system_animation_list) 132 { 133 _gx_animation_update(); 134 } 135 136 /* release our lock */ 137 GX_EXIT_CRITICAL 138 } 139 140
