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9919e33705
nuttx/configs/xmc4500-relax/include/board.h
Gregory Nutt 9919e33705 Trivial changes to comments.
2017-03-21 15:31:53 -06:00

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/************************************************************************************
* configs/xmc4500-relax/include/board.h
*
* Copyright (C) 2017 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 __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H
#define __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
#endif
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* Default clock initialization
*
* fXTAL = 12Mhz
* -> fPLL = (fXTAL / (2 * 1) * 48) = 288MHz
* -> fSYS = (fPLL / 1) = 288MHz
* -> fCPU = (fSYS / 2) = 144MHz
* -> fPERIPH = (fCPU / 1) = 144MHz
* -> fCCU = (fSYS / 2) = 144MHz
* -> fETH = 72MHz (REVISIT)
* -> fUSB = 48MHz (REVISIT)
* -> fEBU = 72MHz (REVISIT)
*
* fUSBPLL Disabled, only enabled if SCU_CLK_USBCLKCR_USBSEL_USBPLL is selected
*
* fOFI = 24MHz
* -> fWDT = 24MHz (REVISIT)
*/
#undef BOARD_FOFI_CALIBRATION /* Enable factory calibration */
/* On-board crystals
*
* NOTE: Only the XMC4500 Relax Kit-V1 provides the 32.768KHz RTC crystal. It
* is not available on XMC4500 Relax Lite Kit-V1.
*/
#define BOARD_XTAL_FREQUENCY 12000000 /* 12MHz XTAL */
#undef BOARD_RTC_XTAL_FRQUENCY /* 32.768KHz RTC XTAL not available */
/* Select the external crystal as the PLL clock source */
#define BOARD_PLL_CLOCKSRC_XTAL 1 /* PLL Clock source == extnernal crystal */
#undef BOARD_PLL_CLOCKSRC_OFI /* PLL Clock source != internal fast oscillator */
/* PLL Configuration:
*
* fPLL = (fPLLSRC / (pdiv * k2div) * ndiv
*
* fPLL = (12000000 / (2 * 1)) * 48
* = 288MHz
*/
#define BOARD_ENABLE_PLL 1
#define BOARD_PLL_PDIV 2
#define BOARD_PLL_NDIV 48
#define BOARD_PLL_K2DIV 1
#define BOARD_PLL_FREQUENCY 288000000
/* System frequency, fSYS, is divided down from PLL output */
#define BOARD_SYSDIV 1 /* PLL Output divider to get fSYS */
#define BOARD_SYS_FREQUENCY 288000000
/* CPU frequency, fCPU, may be divided down from system frequency */
#define BOARD_CPUDIV_ENABLE 1 /* Enable PLL dive by 2 for fCPU */
#define BOARD_CPU_FREQUENCY 144000000
/* The peripheral clock, fPERIPH, derives from fCPU with no division */
#define BOARD_PBDIV 1 /* No division */
#define BOARD_PERIPH_FREQUENCY 144000000
/* Standby clock source selection
*
* BOARD_STDBY_CLOCKSRC_OSI - Internal 32.768KHz slow oscillator
* BOARD_STDBY_CLOCKSRC_OSCULP - External 32.768KHz crystal
*/
#define BOARD_STDBY_CLOCKSRC_OSI 1
#undef BOARD_STDBY_CLOCKSRC_OSCULP
#define BOARD_STDBY_FREQUENCY 32768
/* USB PLL settings.
*
* fUSBPLL = 48MHz and fUSBPLLVCO = 384 MHz
*
* Note: Implicit divider of 2 and fUSBPLLVCO >= 260 MHz and
* fUSBPLLVCO <= 520 MHz
*/
#undef BOARD_ENABLE_USBPLL
#define BOARD_USB_PDIV 2
#define BOARD_USB_NDIV 64
/* FLASH wait states */
#define BOARD_FLASH_WS 5
/* LED definitions ******************************************************************/
/* The XMC4500 Relax Lite v1 board has two LEDs:
*
* LED1 P1.1 High output illuminates
* LED2 P1.0 High output illuminates
*
* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any
* way. The following definitions are used to access individual LEDs.
*/
/* LED index values for use with board_userled() */
#define BOARD_LED0 0
#define BOARD_LED1 1
#define BOARD_NLEDS 2
/* LED bits for use with board_userled_all() */
#define BOARD_LED0_BIT (1 << BOARD_LED0)
#define BOARD_LED1_BIT (1 << BOARD_LED1)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/sam_autoleds.c. The LEDs are used to encode
* OS-related events as follows:
*
* SYMBOL Meaning LED state
* LED2 LED1
* --------------------- -------------------------- ------ ------ */
#define LED_STARTED 0 /* NuttX has been started OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF */
#define LED_INIRQ 2 /* In an interrupt No change */
#define LED_SIGNAL 2 /* In a signal handler No change */
#define LED_ASSERTION 2 /* An assertion failed No change */
#define LED_PANIC 3 /* The system has crashed N/C Blinking */
#undef LED_IDLE /* MCU is is sleep mode Not used */
/* Thus if LED1 is statically on, NuttX has successfully booted and is,
* apparently, running normally. If LED2 is flashing at approximately
* 2Hz, then a fatal error has been detected and the system has halted.
*/
/* Button definitions ***************************************************************/
/* The XMC4500 Relax Lite v1 board has two buttons:
*
* BUTTON1 P1.14 Low input sensed when button pressed
* BUTTON2 P1.15 Low input sensed when button pressed
*/
#define BUTTON_0 0
#define BUTTON_1 1
#define NUM_BUTTONS 2
#define BUTTON_0_BIT (1 << BUTTON_0)
#define BUTTON_1_BIT (1 << BUTTON_1)
/* USIC0 ****************************************************************************/
/* USIC0 CH0 is used as UART0
*
* RX - P1.4
* TX - P1.5
*/
#define BOARD_UART0_DX USIC_DXB
#define GPIO_UART0_RXD0 GPIO_U0C0_DX0B
#define GPIO_UART0_TXD0 (GPIO_U0C0_DOUT0_3 | GPIO_PADA1P_STRONGSOFT | GPIO_OUTPUT_SET)
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H */
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