]> git.sur5r.net Git - freertos/blob - Demo/PC/ParTest/ParTest.c
Remove unnecessary use of portLONG, portCHAR and portSHORT.
[freertos] / Demo / PC / ParTest / ParTest.c
1 /*\r
2         FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.\r
3 \r
4         This file is part of the FreeRTOS distribution.\r
5 \r
6         FreeRTOS is free software; you can redistribute it and/or modify it     under \r
7         the terms of the GNU General Public License (version 2) as published by the \r
8         Free Software Foundation and modified by the FreeRTOS exception.\r
9         **NOTE** The exception to the GPL is included to allow you to distribute a\r
10         combined work that includes FreeRTOS without being obliged to provide the \r
11         source code for proprietary components outside of the FreeRTOS kernel.  \r
12         Alternative commercial license and support terms are also available upon \r
13         request.  See the licensing section of http://www.FreeRTOS.org for full \r
14         license details.\r
15 \r
16         FreeRTOS is distributed in the hope that it will be useful,     but WITHOUT\r
17         ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
18         FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
19         more details.\r
20 \r
21         You should have received a copy of the GNU General Public License along\r
22         with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59\r
23         Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
24 \r
25 \r
26         ***************************************************************************\r
27         *                                                                         *\r
28         * Looking for a quick start?  Then check out the FreeRTOS eBook!          *\r
29         * See http://www.FreeRTOS.org/Documentation for details                   *\r
30         *                                                                         *\r
31         ***************************************************************************\r
32 \r
33         1 tab == 4 spaces!\r
34 \r
35         Please ensure to read the configuration and relevant port sections of the\r
36         online documentation.\r
37 \r
38         http://www.FreeRTOS.org - Documentation, latest information, license and\r
39         contact details.\r
40 \r
41         http://www.SafeRTOS.com - A version that is certified for use in safety\r
42         critical systems.\r
43 \r
44         http://www.OpenRTOS.com - Commercial support, development, porting,\r
45         licensing and training services.\r
46 */\r
47 \r
48 /*\r
49 Changes from V1.01:\r
50 \r
51         + Types used updated.\r
52         + Add vParTestToggleLED();\r
53 \r
54 \r
55 Changes from V2.0.0\r
56 \r
57         + Use scheduler suspends in place of critical sections.\r
58 */\r
59 \r
60 #include "FreeRTOS.h"\r
61 #include "partest.h"\r
62 #include "task.h"\r
63 \r
64 #define partstALL_OUTPUTS_OFF                   ( ( unsigned portCHAR ) 0x00 )\r
65 #define partstMAX_OUTPUT_LED                    ( ( unsigned portCHAR ) 7 )\r
66 \r
67 /*lint -e956 File scope parameters okay here. */\r
68 static unsigned portSHORT usPortAddress = partstDEFAULT_PORT_ADDRESS;\r
69 static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF;\r
70 /*lint +e956 */\r
71 \r
72 \r
73 /*-----------------------------------------------------------\r
74  * Simple parallel port IO routines\r
75  *-----------------------------------------------------------*/\r
76 \r
77 void vParTestInitialise( void )\r
78 {\r
79         ucCurrentOutputValue = partstALL_OUTPUTS_OFF;\r
80 \r
81         portOUTPUT_BYTE( usPortAddress, ( unsigned ) partstALL_OUTPUTS_OFF );\r
82 }\r
83 /*-----------------------------------------------------------*/\r
84 \r
85 void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )\r
86 {\r
87 unsigned portCHAR ucBit = ( unsigned portCHAR ) 1;\r
88 \r
89         if( uxLED <= partstMAX_OUTPUT_LED )\r
90         {\r
91                 ucBit <<= uxLED;\r
92         }       \r
93 \r
94         vTaskSuspendAll();\r
95         {\r
96                 if( xValue == pdTRUE )\r
97                 {\r
98                         ucBit ^= ( unsigned portCHAR ) 0xff;\r
99                         ucCurrentOutputValue &= ucBit;\r
100                 }\r
101                 else\r
102                 {\r
103                         ucCurrentOutputValue |= ucBit;\r
104                 }\r
105 \r
106                 portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );\r
107         }\r
108         xTaskResumeAll();\r
109 }\r
110 /*-----------------------------------------------------------*/\r
111 \r
112 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
113 {\r
114 unsigned portCHAR ucBit;\r
115 \r
116         if( uxLED <= partstMAX_OUTPUT_LED )\r
117         {\r
118                 ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;\r
119 \r
120                 vTaskSuspendAll();\r
121                 {\r
122                         if( ucCurrentOutputValue & ucBit )\r
123                         {\r
124                                 ucCurrentOutputValue &= ~ucBit;\r
125                         }\r
126                         else\r
127                         {\r
128                                 ucCurrentOutputValue |= ucBit;\r
129                         }\r
130 \r
131                         portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );\r
132                 }\r
133                 xTaskResumeAll();                       \r
134         }\r
135 }\r
136 \r