1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
/************************************************************************************
* configs/sam4l-xplained/include/board.h
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
#define __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# ifdef CONFIG_GPIO_IRQ
# include <arch/irq.h>
# endif
#endif
/************************************************************************************
* Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* After power-on reset, the sam3u device is running on a 4MHz internal RC. These
* definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz.
*/
/* Main oscillator register settings */
#define BOARD_CKGR_MOR_MOSCXTST (63 << CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */
/* PLLA configuration */
#define BOARD_CKGR_PLLAR_MULA (7 << CKGR_PLLAR_MULA_SHIFT)
#define BOARD_CKGR_PLLAR_STMODE CKGR_PLLAR_STMODE_FAST
#define BOARD_CKGR_PLLAR_PLLACOUNT (63 << CKGR_PLLAR_PLLACOUNT_SHIFT)
#define BOARD_CKGR_PLLAR_DIVA CKGR_PLLAR_DIVA_BYPASS
/* PMC master clock register settings */
#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA
#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2
/* USB UTMI PLL start-up time */
#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << CKGR_UCKR_UPLLCOUNT_SHIFT)
/* System clock dividers: Fbus = Fsys / (2 ^ BUS_div) */
#define BOARD_SYSCLK_CPU_DIV 0
#define BOARD_SYSCLK_PBA_DIV 0
#define BOARD_SYSCLK_PBB_DIV 0
#define BOARD_SYSCLK_PBC_DIV 0
#define BOARD_SYSCLK_PBD_DIV 0
/* Resulting frequencies */
#define SAM_MAINOSC_FREQUENCY (12000000)
#define SAM_MCK_FREQUENCY (48000000)
#define SAM_PLLA_FREQUENCY (96000000)
#define SAM_CPU_FREQUENCY (48000000)
/* HSMCI clocking
*
* Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK)
* divided by (2*(CLKDIV+1)).
*
* MCI_SPEED = MCK / (2*(CLKDIV+1))
* CLKDIV = MCI / MCI_SPEED / 2 - 1
*/
/* MCK = 48MHz, CLKDIV = 59, MCI_SPEED = 48MHz / 2 * (59+1) = 400 KHz */
#define HSMCI_INIT_CLKDIV (59 << HSMCI_MR_CLKDIV_SHIFT)
/* MCK = 48MHz, CLKDIV = 1, MCI_SPEED = 48MHz / 2 * (1+1) = 12 MHz */
#define HSMCI_MMCXFR_CLKDIV (3 << HSMCI_MR_CLKDIV_SHIFT)
/* MCK = 48MHz, CLKDIV = 0, MCI_SPEED = 48MHz / 2 * (0+1) = 24 MHz */
#define HSMCI_SDXFR_CLKDIV (0 << HSMCI_MR_CLKDIV_SHIFT)
#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV
/* LED definitions ******************************************************************/
/* There are three LEDs on board the SAM4L Xplained Pro board: The EDBG
* controls two of the LEDs, a power LED and a status LED. There is only
* one user controllable LED, a yellow LED labeled LED0 near the SAM4L USB
* connector.
*
* This LED is controlled by PC07 and LED0 can be activated by driving the
* PC07 to GND.
*/
/* LED index values for use with sam_setled() */
#define BOARD_LED0 0
#define BOARD_NLEDS 1
/* LED bits for use with sam_setleds() */
#define BOARD_LED0_BIT (1 << BOARD_LED0)
/* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
* control LED0 as defined below. Thus is LED0 is statically on, NuttX has
* successfully booted and is, apparently, running normmally. If LED0 is
* flashing at approximately 2Hz, then a fatal error has been detected and the
* system has halted.
*/
#define LED_STARTED 0 /* LED0=OFF */
#define LED_HEAPALLOCATE 0 /* LED0=OFF */
#define LED_IRQSENABLED 0 /* LED0=OFF */
#define LED_STACKCREATED 1 /* LED0=ON */
#define LED_INIRQ 2 /* LED0=no change */
#define LED_SIGNAL 2 /* LED0=no change */
#define LED_ASSERTION 2 /* LED0=no change */
#define LED_PANIC 3 /* LED0=flashing */
/* Button definitions ***************************************************************/
/* QTouch button: The SAM4L Xplained Pro kit has one QTouch button. The connection
* to the SAM4L is:
*
* PC13 CATB_SENSE15
* PC14 CATB_DIS
*/
/* Mechanical buttons:
*
* The SAM4L Xplained Pro contains two mechanical buttons. One button is the
* RESET button connected to the SAM4L reset line and the other is a generic user
* configurable button. When a button is pressed it will drive the I/O line to GND.
*
* PC24 SW0
*/
/* The STM32F4 Discovery supports one button: */
#define BUTTON_SW0 0
#define NUM_BUTTONS 1
#define BUTTON_SW0_BIT (1 << BUTTON_SW0)
/* Alternate Function Disambiguation ************************************************/
/* The SAM4L Xplained Pro contains an Embedded Debugger (EDBG) that can be
* used to program and debug the ATSAM4LC4C using Serial Wire Debug (SWD).
* The Embedded debugger also include a Virtual Com port interface over
* USART1. Virtual COM port connections:
*
* PC26 USART1 RXD
* PC27 USART1 TXD
*/
#define GPIO_USART1_RXD GPIO_USART1_RXD_2
#define GPIO_USART1_TXD GPIO_USART1_TXD_2
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: sam_boardinitialize
*
* Description:
* All SAM3U architectures must provide the following entry point. This entry point
* is called early in the intitialization -- after all memory has been configured
* and mapped but before any devices have been initialized.
*
************************************************************************************/
void sam_boardinitialize(void);
/************************************************************************************
* Name: sam_ledinit, sam_setled, and sam_setleds
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LEDs. If
* CONFIG_ARCH_LEDS is not defined, then the following interfaces are available to
* control the LEDs from user applications.
*
************************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void sam_ledinit(void);
void sam_setled(int led, bool ledon);
void sam_setleds(uint8_t ledset);
#endif
/************************************************************************************
* Name: up_buttoninit
*
* Description:
* up_buttoninit() must be called to initialize button resources. After that,
* up_buttons() may be called to collect the current state of all buttons or
* up_irqbutton() may be called to register button interrupt handlers.
*
************************************************************************************/
#ifdef CONFIG_ARCH_BUTTONS
void up_buttoninit(void);
/************************************************************************************
* Name: up_buttons
*
* Description:
* After up_buttoninit() has been called, up_buttons() may be called to collect
* the state of all buttons. up_buttons() returns an 8-bit bit set with each bit
* associated with a button. See the BUTTON* definitions above for the meaning of
* each bit in the returned value.
*
************************************************************************************/
uint8_t up_buttons(void);
/************************************************************************************
* Name: up_irqbutton
*
* Description:
* This function may be called to register an interrupt handler that will be
* called when a button is depressed or released. The ID value is one of the
* BUTTON* definitions provided above. The previous interrupt handler address is
* returned (so that it may restored, if so desired).
*
************************************************************************************/
#ifdef CONFIG_GPIOA_IRQ
xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
#endif
#endif /* CONFIG_ARCH_BUTTONS */
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H */
|
