]> git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/dsPIC_MPLAB/ParTest/ParTest.c
Add additional critical section to the default tickless implementations.
[freertos] / FreeRTOS / Demo / dsPIC_MPLAB / ParTest / ParTest.c
1 /*\r
2     FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.\r
3 \r
4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
5 \r
6     ***************************************************************************\r
7      *                                                                       *\r
8      *    FreeRTOS provides completely free yet professionally developed,    *\r
9      *    robust, strictly quality controlled, supported, and cross          *\r
10      *    platform software that has become a de facto standard.             *\r
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13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
15      *                                                                       *\r
16      *    Thank you!                                                         *\r
17      *                                                                       *\r
18     ***************************************************************************\r
19 \r
20     This file is part of the FreeRTOS distribution.\r
21 \r
22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
23     the terms of the GNU General Public License (version 2) as published by the\r
24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
25 \r
26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
28     >>! the source code for proprietary components outside of the FreeRTOS\r
29     >>! kernel.\r
30 \r
31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
34     link: http://www.freertos.org/a00114.html\r
35 \r
36     1 tab == 4 spaces!\r
37 \r
38     ***************************************************************************\r
39      *                                                                       *\r
40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
41      *    not run, what could be wrong?"                                     *\r
42      *                                                                       *\r
43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
44      *                                                                       *\r
45     ***************************************************************************\r
46 \r
47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
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49 \r
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53 \r
54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
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57 \r
58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
59     engineered and independently SIL3 certified version for use in safety and\r
60     mission critical applications that require provable dependability.\r
61 \r
62     1 tab == 4 spaces!\r
63 */\r
64 \r
65 /* Scheduler includes. */\r
66 #include "FreeRTOS.h"\r
67 \r
68 /* Demo app includes. */\r
69 #include "partest.h"\r
70 \r
71 #define ptOUTPUT        0\r
72 #define ptALL_OFF       0\r
73 \r
74 unsigned portBASE_TYPE uxOutput;\r
75 \r
76 /*-----------------------------------------------------------\r
77  * Simple parallel port IO routines.\r
78  *-----------------------------------------------------------*/\r
79 \r
80 void vParTestInitialise( void )\r
81 {\r
82         /* The explorer 16 board has LED's on port A.  All bits are set as output\r
83         so PORTA is read-modified-written directly.  Two pins have change \r
84         notification pullups that need disabling. */\r
85         CNPU2bits.CN22PUE = 0;\r
86         CNPU2bits.CN23PUE = 0;\r
87         TRISA = ptOUTPUT;\r
88         PORTA = ptALL_OFF;\r
89         uxOutput = ptALL_OFF;\r
90 }\r
91 /*-----------------------------------------------------------*/\r
92 \r
93 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
94 {\r
95 unsigned portBASE_TYPE uxLEDBit;\r
96 \r
97         /* Which port A bit is being modified? */\r
98         uxLEDBit = 1 << uxLED;\r
99 \r
100         if( xValue )\r
101         {\r
102                 /* Turn the LED on. */\r
103                 portENTER_CRITICAL();\r
104                 {\r
105                         uxOutput |= uxLEDBit;\r
106                         PORTA = uxOutput;\r
107                 }\r
108                 portEXIT_CRITICAL();\r
109         }\r
110         else\r
111         {\r
112                 /* Turn the LED off. */\r
113                 portENTER_CRITICAL();\r
114                 {\r
115                         uxOutput &= ~uxLEDBit;\r
116                         PORTA = uxOutput;\r
117                 }\r
118                 portEXIT_CRITICAL();\r
119         }\r
120 }\r
121 /*-----------------------------------------------------------*/\r
122 \r
123 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
124 {\r
125 unsigned portBASE_TYPE uxLEDBit;\r
126 \r
127         uxLEDBit = 1 << uxLED;\r
128         portENTER_CRITICAL();\r
129         {\r
130                 /* If the LED is already on - turn it off.  If the LED is already\r
131                 off, turn it on. */\r
132                 if( uxOutput & uxLEDBit )\r
133                 {\r
134                         uxOutput &= ~uxLEDBit;\r
135                         PORTA = uxOutput;\r
136                 }\r
137                 else\r
138                 {\r
139                         uxOutput |= uxLEDBit;\r
140                         PORTA = uxOutput;\r
141                 }\r
142         }\r
143         portEXIT_CRITICAL();\r
144 }\r
145 \r