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1 /*\r
2     FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.\r
3 \r
4     ***************************************************************************\r
5     *                                                                         *\r
6     * If you are:                                                             *\r
7     *                                                                         *\r
8     *    + New to FreeRTOS,                                                   *\r
9     *    + Wanting to learn FreeRTOS or multitasking in general quickly       *\r
10     *    + Looking for basic training,                                        *\r
11     *    + Wanting to improve your FreeRTOS skills and productivity           *\r
12     *                                                                         *\r
13     * then take a look at the FreeRTOS eBook                                  *\r
14     *                                                                         *\r
15     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *\r
16     *                  http://www.FreeRTOS.org/Documentation                  *\r
17     *                                                                         *\r
18     * A pdf reference manual is also available.  Both are usually delivered   *\r
19     * to your inbox within 20 minutes to two hours when purchased between 8am *\r
20     * and 8pm GMT (although please allow up to 24 hours in case of            *\r
21     * exceptional circumstances).  Thank you for your support!                *\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 exception to the GPL is included to allow you to distribute\r
31     a combined work that includes FreeRTOS without being obliged to provide the\r
32     source code for proprietary components outside of the FreeRTOS kernel.\r
33     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
34     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
35     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 /* Scheduler includes. */\r
56 #include "FreeRTOS.h"\r
57 \r
58 /* Demo application includes. */\r
59 #include "partest.h"\r
60 \r
61 /* Library includes. */\r
62 #include "xparameters.h"\r
63 #include "xgpio_l.h"\r
64 \r
65 /* Misc hardware specific definitions. */\r
66 #define partstALL_AS_OUTPUT     0x00\r
67 #define partstCHANNEL_1         0x01\r
68 #define partstMAX_8BIT_LED      0x07\r
69 \r
70 /* The outputs are split into two IO sections, these variables maintain the \r
71 current value of either section. */\r
72 static unsigned portBASE_TYPE uxCurrentOutput8Bit, uxCurrentOutput5Bit;\r
73 \r
74 /*-----------------------------------------------------------*/\r
75 /*\r
76  * Setup the IO for the LED outputs.\r
77  */\r
78 void vParTestInitialise( void )\r
79 {\r
80         /* Set both sets of LED's on the demo board to outputs. */\r
81         XGpio_mSetDataDirection( XPAR_LEDS_8BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
82         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
83 \r
84         /* Start with all outputs off. */\r
85         uxCurrentOutput8Bit = 0;\r
86         XGpio_mSetDataReg( XPAR_LEDS_8BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
87         uxCurrentOutput5Bit = 0;\r
88         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
89 }\r
90 /*-----------------------------------------------------------*/\r
91 \r
92 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
93 {\r
94 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
95 \r
96         portENTER_CRITICAL();\r
97         {\r
98                 /* Which IO section does the LED being set/cleared belong to?  The\r
99                 4 bit or 5 bit outputs? */\r
100                 if( uxLED <= partstMAX_8BIT_LED )\r
101                 {\r
102                         uxBaseAddress = XPAR_LEDS_8BIT_BASEADDR;\r
103                         puxCurrentValue = &uxCurrentOutput5Bit;\r
104                 }       \r
105                 else\r
106                 {\r
107                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
108                         puxCurrentValue = &uxCurrentOutput8Bit;\r
109                         uxLED -= partstMAX_8BIT_LED;\r
110                 }\r
111 \r
112                 /* Setup the bit mask accordingly. */\r
113                 uxLED = 0x01 << uxLED;\r
114 \r
115                 /* Maintain the current output value. */\r
116                 if( xValue )\r
117                 {\r
118                         *puxCurrentValue |= uxLED;\r
119                 }\r
120                 else\r
121                 {\r
122                         *puxCurrentValue &= ~uxLED;\r
123                 }\r
124 \r
125                 /* Write the value to the port. */\r
126                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
127         }\r
128         portEXIT_CRITICAL();\r
129 }\r
130 /*-----------------------------------------------------------*/\r
131 \r
132 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
133 {\r
134 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
135 \r
136         portENTER_CRITICAL();\r
137         {\r
138                 /* Which IO section does the LED being toggled belong to?  The\r
139                 4 bit or 5 bit outputs? */\r
140                 if( uxLED <= partstMAX_8BIT_LED )\r
141                 {\r
142 \r
143                         uxBaseAddress = XPAR_LEDS_8BIT_BASEADDR;\r
144                         puxCurrentValue = &uxCurrentOutput5Bit;\r
145                 }       \r
146                 else\r
147                 {\r
148                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
149                         puxCurrentValue = &uxCurrentOutput8Bit;\r
150                         uxLED -= partstMAX_8BIT_LED;\r
151                 }\r
152 \r
153                 /* Setup the bit mask accordingly. */\r
154                 uxLED = 0x01 << uxLED;\r
155 \r
156                 /* Maintain the current output value. */\r
157                 if( *puxCurrentValue & uxLED )\r
158                 {\r
159                         *puxCurrentValue &= ~uxLED;\r
160                 }\r
161                 else\r
162                 {\r
163                         *puxCurrentValue |= uxLED;\r
164                 }\r
165 \r
166                 /* Write the value to the port. */\r
167                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
168         }\r
169         portEXIT_CRITICAL();\r
170 }\r
171 \r
172 \r