]> git.sur5r.net Git - freertos/blob - Demo/PIC18_MPLAB/ParTest/ParTest.c
Add variable initialisation. Doesn't really make a difference, just neater.
[freertos] / Demo / PIC18_MPLAB / ParTest / ParTest.c
1 /*\r
2         FreeRTOS.org V4.8.0 - Copyright (C) 2003-2008 Richard Barry.\r
3 \r
4         This file is part of the FreeRTOS.org distribution.\r
5 \r
6         FreeRTOS.org is free software; you can redistribute it and/or modify\r
7         it under the terms of the GNU General Public License as published by\r
8         the Free Software Foundation; either version 2 of the License, or\r
9         (at your option) any later version.\r
10 \r
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13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
14         GNU General Public License for more details.\r
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17         along with FreeRTOS.org; if not, write to the Free Software\r
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24         can be applied.\r
25 \r
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27     ***************************************************************************\r
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33     *                                                                         *\r
34     ***************************************************************************\r
35     ***************************************************************************\r
36 \r
37         Please ensure to read the configuration and relevant port sections of the\r
38         online documentation.\r
39 \r
40         http://www.FreeRTOS.org - Documentation, latest information, license and \r
41         contact details.\r
42 \r
43         http://www.SafeRTOS.com - A version that is certified for use in safety \r
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46         http://www.OpenRTOS.com - Commercial support, development, porting, \r
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48 */\r
49 \r
50 /* \r
51 Changes from V2.0.0\r
52 \r
53         + Use scheduler suspends in place of critical sections.\r
54 */\r
55 \r
56 #include "FreeRTOS.h"\r
57 #include "task.h"\r
58 #include "partest.h"\r
59 \r
60 /*-----------------------------------------------------------\r
61  * Simple parallel port IO routines for the FED 40pin demo board.\r
62  * The four LED's are connected to D4 to D7.\r
63  *-----------------------------------------------------------*/\r
64 \r
65 #define partstBIT_AS_OUTPUT                     ( ( unsigned portSHORT ) 0 )\r
66 #define partstSET_OUTPUT                        ( ( unsigned portSHORT ) 1 )\r
67 #define partstCLEAR_OUTPUT                      ( ( unsigned portSHORT ) 0 )\r
68 \r
69 #define partstENABLE_GENERAL_IO         ( ( unsigned portCHAR ) 7 )\r
70 \r
71 /*-----------------------------------------------------------*/\r
72 \r
73 void vParTestInitialise( void )\r
74 {\r
75         /* Set the top four bits of port D to output. */\r
76         TRISDbits.TRISD7 = partstBIT_AS_OUTPUT;\r
77         TRISDbits.TRISD6 = partstBIT_AS_OUTPUT;\r
78         TRISDbits.TRISD5 = partstBIT_AS_OUTPUT;\r
79         TRISDbits.TRISD4 = partstBIT_AS_OUTPUT;\r
80 \r
81         /* Start with all bits off. */\r
82         PORTDbits.RD7 = partstCLEAR_OUTPUT;\r
83         PORTDbits.RD6 = partstCLEAR_OUTPUT;\r
84         PORTDbits.RD5 = partstCLEAR_OUTPUT;\r
85         PORTDbits.RD4 = partstCLEAR_OUTPUT;\r
86 \r
87         /* Enable the driver. */\r
88         ADCON1 = partstENABLE_GENERAL_IO;\r
89         TRISEbits.TRISE2 = partstBIT_AS_OUTPUT;\r
90         PORTEbits.RE2 = partstSET_OUTPUT;       \r
91 }\r
92 /*-----------------------------------------------------------*/\r
93 \r
94 void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )\r
95 {\r
96         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
97         vTaskSuspendAll();\r
98         {\r
99                 switch( uxLED )\r
100                 {\r
101                         case 3  :       PORTDbits.RD7 = ( portSHORT ) xValue;\r
102                                                 break;\r
103                         case 2  :       PORTDbits.RD6 = ( portSHORT ) xValue;\r
104                                                 break;\r
105                         case 1  :       PORTDbits.RD5 = ( portSHORT ) xValue;\r
106                                                 break;\r
107                         case 0  :       PORTDbits.RD4 = ( portSHORT ) xValue;\r
108                                                 break;\r
109                         default :       /* There are only 4 LED's. */\r
110                                                 break;\r
111                 }\r
112         }\r
113         xTaskResumeAll();\r
114 }\r
115 /*-----------------------------------------------------------*/\r
116 \r
117 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
118 {\r
119         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
120         vTaskSuspendAll();\r
121         {\r
122                 switch( uxLED )\r
123                 {\r
124                         case 3  :       PORTDbits.RD7 = !( PORTDbits.RD7 );\r
125                                                 break;\r
126                         case 2  :       PORTDbits.RD6 = !( PORTDbits.RD6 );\r
127                                                 break;\r
128                         case 1  :       PORTDbits.RD5 = !( PORTDbits.RD5 );\r
129                                                 break;\r
130                         case 0  :       PORTDbits.RD4 = !( PORTDbits.RD4 );\r
131                                                 break;\r
132                         default :       /* There are only 4 LED's. */\r
133                                                 break;\r
134                 }\r
135         }\r
136         xTaskResumeAll();\r
137 }\r
138 \r
139 \r
140 \r