]> git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/NEC_V850ES_IAR/LowLevelInit/LowLevelInit_Fx3.c
Minor updates and change version number for V7.5.0 release.
[freertos] / FreeRTOS / Demo / NEC_V850ES_IAR / LowLevelInit / LowLevelInit_Fx3.c
1 /*\r
2     FreeRTOS V7.5.0 - 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
11      *                                                                       *\r
12      *    Help yourself get started quickly and support the FreeRTOS         *\r
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
48     license and Real Time Engineers Ltd. contact details.\r
49 \r
50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
53 \r
54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
56     licenses offer ticketed support, indemnification and middleware.\r
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 #include "FreeRTOS.h"\r
66 \r
67 /*-----------------------------------------------------------*/\r
68 \r
69 /* Called by the startup code to initialise the run time system. */\r
70 unsigned portCHAR __low_level_init(void);\r
71 \r
72 /*-----------------------------------------------------------*/\r
73 \r
74 unsigned portCHAR __low_level_init(void)\r
75 {\r
76 unsigned portCHAR resetflag = RESF;\r
77 unsigned portCHAR psval = 0;\r
78 \r
79         /* Setup provided by NEC. */\r
80 \r
81         /* Disable global interrupts to ensure no interrupts occur during system\r
82         setup. */\r
83         portDISABLE_INTERRUPTS();\r
84 \r
85         PRCMD = 0x00;\r
86         OCDM = 0x00;\r
87         VSWC = 0x12;\r
88         VSWC = 18;\r
89 \r
90         /* Set main system clock */\r
91         OSTS = 0x06;\r
92         psval = 0x80;\r
93         PRCMD = psval;\r
94         PCC = psval;\r
95         while (!OSTC)\r
96         {\r
97                 ;\r
98         }\r
99 \r
100         PLLS = 0x03;\r
101         PLLON = 1;\r
102         while (LOCKR)\r
103         {\r
104                 ;\r
105         }\r
106 \r
107         psval = 0x01;\r
108         PRCMD = psval;\r
109         MCM = psval;\r
110         SELPLL = 1;\r
111 \r
112         /* Set fCPU */\r
113         psval = PCC | 0x00;\r
114         PRCMD = psval;\r
115         PCC = psval;\r
116         RCM = 0x83;\r
117 \r
118         /* Set fXP1 */\r
119         SELCNT4 = 0x00;\r
120 \r
121         /* Set fBRG */\r
122         PRSM0 = 0x00;\r
123 \r
124         /* Stand-by setting */\r
125         psval = 0x00;\r
126         PRCMD = psval;\r
127         PSC = psval;\r
128 \r
129         /* WDT2 setting */\r
130         WDTM2 = 0x1F;\r
131 \r
132         /* PCL setting */\r
133         PCLM = 0x00;\r
134 \r
135         /* disable dma0 - dma3 */\r
136         E00 = 0;        \r
137         E11 = 0;\r
138         E22 = 0;\r
139         E33 = 0;        \r
140 \r
141         return pdTRUE;\r
142 }\r
143 /*-----------------------------------------------------------*/\r