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Complete first pass commenting of the new MicroBlaze demo main-blinky.c and main...
[freertos] / Demo / MicroBlaze_Spartan-6_EthernetLite / SDKProjects / RTOSDemoSource / ParTest.c
1 /*\r
2     FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.\r
3         \r
4 \r
5     ***************************************************************************\r
6      *                                                                       *\r
7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
8      *    Complete, revised, and edited pdf reference manuals are also       *\r
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13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
14      *    the FreeRTOS project to continue with its mission of providing     *\r
15      *    professional grade, cross platform, de facto standard solutions    *\r
16      *    for microcontrollers - completely free of charge!                  *\r
17      *                                                                       *\r
18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
19      *                                                                       *\r
20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
21      *                                                                       *\r
22     ***************************************************************************\r
23 \r
24 \r
25     This file is part of the FreeRTOS distribution.\r
26 \r
27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
28     the terms of the GNU General Public License (version 2) as published by the\r
29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
30     >>>NOTE<<< The modification to the GPL is included to allow you to\r
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33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
35     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
36     more details. You should have received a copy of the GNU General Public\r
37     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
38     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
39     by writing to Richard Barry, contact details for whom are available on the\r
40     FreeRTOS WEB site.\r
41 \r
42     1 tab == 4 spaces!\r
43 \r
44     http://www.FreeRTOS.org - Documentation, latest information, license and\r
45     contact details.\r
46 \r
47     http://www.SafeRTOS.com - A version that is certified for use in safety\r
48     critical systems.\r
49 \r
50     http://www.OpenRTOS.com - Commercial support, development, porting,\r
51     licensing and training services.\r
52 */\r
53 \r
54 /*-----------------------------------------------------------\r
55  * Simple parallel port IO routines.\r
56  *-----------------------------------------------------------*/\r
57 \r
58 /* Kernel includes. */\r
59 #include "FreeRTOS.h"\r
60 \r
61 /* Demo application includes. */\r
62 #include "partest.h"\r
63 \r
64 /* Library includes. */\r
65 #include "xgpio.h"\r
66 \r
67 #define partstMAX_LED   4\r
68 \r
69 /*-----------------------------------------------------------*/\r
70 \r
71 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;\r
72 static unsigned char ucGPIOState = 0U;\r
73 \r
74 static XGpio xOutputGPIOInstance;\r
75 \r
76 /*\r
77  * Setup the IO for the LED outputs.\r
78  */\r
79 void vParTestInitialise( void )\r
80 {\r
81 portBASE_TYPE xStatus;\r
82 const unsigned char ucSetToOutput = 0U;\r
83 \r
84         /* Initialise the GPIO for the LEDs. */\r
85         xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );\r
86         if( xStatus == XST_SUCCESS )\r
87         {\r
88                 /* All bits on this channel are going to be outputs (LEDs). */\r
89                 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );\r
90 \r
91                 /* Start with all LEDs off. */\r
92                 ucGPIOState = 0U;\r
93                 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
94         }\r
95         \r
96         configASSERT( xStatus == XST_SUCCESS );\r
97 }\r
98 /*-----------------------------------------------------------*/\r
99 \r
100 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
101 {\r
102 unsigned char ucLED = 1U;\r
103 \r
104         if( uxLED < partstMAX_LED )\r
105         {\r
106                 ucLED <<= ( unsigned char ) uxLED;\r
107 \r
108                 portENTER_CRITICAL();\r
109                 {\r
110                         if( xValue == pdFALSE )\r
111                         {\r
112                                 ucGPIOState &= ~ucLED;\r
113                         }\r
114                         else\r
115                         {\r
116                                 ucGPIOState |= ucLED;\r
117                         }\r
118                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
119                 }\r
120                 portEXIT_CRITICAL();\r
121         }\r
122 }\r
123 /*-----------------------------------------------------------*/\r
124 \r
125 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
126 {\r
127 unsigned char ucLED = 1U;\r
128 \r
129         if( uxLED < partstMAX_LED )\r
130         {\r
131                 ucLED <<= ( unsigned char ) uxLED;\r
132 \r
133                 portENTER_CRITICAL();\r
134                 {\r
135                         if( ( ucGPIOState & ucLED ) != 0 )\r
136                         {\r
137                                 ucGPIOState &= ~ucLED;\r
138                         }\r
139                         else\r
140                         {\r
141                                 ucGPIOState |= ucLED;\r
142                         }\r
143 \r
144                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
145                 }\r
146                 portEXIT_CRITICAL();\r
147         }\r
148 }\r
149 \r
150 \r
151 \r