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/************************************************************************************
* configs/lm3s8962-ek/include/board.h
* include/arch/board/board.h
*
* Copyright (C) 2010 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 __ARCH_BOARD_BOARD_H
#define __ARCH_BOARD_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* RCC settings */
#define SYSCON_RCC_XTAL SYSCON_RCC_XTAL8000KHZ /* Eagle100 on-board crystall is 8.00 MHz */
#define XTAL_FREQUENCY 8000000
/* Oscillator source is the main oscillator (not internal, internal/4, 30KHz or
* 30KHz from hibernate module) */
#define SYSCON_RCC_OSCSRC SYSCON_RCC_OSCSRC_MOSC
#define SYSCON_RCC2_OSCSRC SYSCON_RCC2_OSCSRC2_MOSC
#define OSCSRC_FREQUENCY XTAL_FREQUENCY
/* Use system divider = 4; this corresponds to a system clock frequency
* of (400 / 2) / 4 = 50MHz
*/
#define TIVA_SYSDIV 4
#define SYSCLK_FREQUENCY 50000000 /* 50MHz */
/* Other RCC settings:
*
* - Main and internal oscillators enabled.
* - PLL and sys dividers not bypassed
* - PLL not powered down
* - No auto-clock gating reset
*/
#define TIVA_RCC_VALUE (SYSCON_RCC_OSCSRC | SYSCON_RCC_XTAL | SYSCON_RCC_USESYSDIV | SYSCON_RCC_SYSDIV(TIVA_SYSDIV))
/* RCC2 settings -- RCC2 not used. Other RCC2 settings
*
* - PLL and sys dividers not bypassed.
* - PLL not powered down
* - Not using RCC2
*/
#define TIVA_RCC2_VALUE (SYSCON_RCC2_OSCSRC | SYSCON_RCC2_SYSDIV(TIVA_SYSDIV))
/* LED definitions ******************************************************************/
/* The LMS38962 Eval Kit has only one user LED: Port F, Bit 0. Below is the mapping of this
* single LED. From this single LED, we can get the following information:
*
* OFF Steady: The system has failed to boot to the point of enabling interrupts
* ON Steady: The systems has enabled interrupts, but none have been received
* Dull glow: The system is taking interrupts
* Slow blinking: The system has panicked
*/
/* ON OFF */
#define LED_STARTED 0 /* OFF OFF */
#define LED_HEAPALLOCATE 1 /* OFF OFF */
#define LED_IRQSENABLED 2 /* ON ON */
#define LED_STACKCREATED 3 /* ON ON */
#define LED_INIRQ 4 /* ON OFF */
#define LED_SIGNAL 5 /* ON OFF */
#define LED_ASSERTION 6 /* ON OFF */
#define LED_PANIC 7 /* ON OFF */
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Name: tiva_boardinitialize
*
* Description:
* All Stellaris 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 tiva_boardinitialize(void);
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_BOARD_BOARD_H */
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