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nuttx/configs/teensy-3.x/include/board.h

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/************************************************************************************
* configs/teensy-3.x/include/board.h
* include/arch/board/board.h
*
* Copyright (C) 2015 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_TEENSY_3X_INCLUDE_BOARD_H
#define __CONFIGS_TEENSY_3X_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
#endif
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* The teensy-3.1 has a 16MHz crystal on board */
#undef BOARD_EXTCLOCK /* Crystal */
#define BOARD_EXTAL_FREQ 16000000 /* 16MHz crystal frequency (REFCLK) */
#define BOARD_XTAL32_FREQ 32768 /* 32KHz RTC Oscillator (not populated) */
/* PLL Configuration. NOTE: Only even frequency crystals are supported that will
* produce a 2MHz reference clock to the PLL. The rated speed for the MK20DX256VLH7
* is 72MHz and 50MHz for the MK20DX128VLH5, but according to the PJRC website,
* both can be overclocked at 96MHz
*
* MK20DX128VLH5 Rated Frequency 50MHz
*
* PLL Input frequency: PLLIN = REFCLK/PRDIV = 16MHz/8 = 2MHz
* PLL Output frequency: PLLOUT = PLLIN*VDIV = 2Mhz*25 = 50MHz
* MCG Frequency: PLLOUT = 48MHz
*
* MK20DX256VLH7 Rated Frequency 72MHz
*
* PLL Input frequency: PLLIN = REFCLK/PRDIV = 16MHz/8 = 2MHz
* PLL Output frequency: PLLOUT = PLLIN*VDIV = 2Mhz*36 = 72MHz
* MCG Frequency: PLLOUT = 72MHz
*
* Board can be overclocked at 96MHz (per PJRC.com)
* PLL Input frequency: PLLIN = REFCLK/PRDIV = 16MHz/8 = 2MHz
* PLL Output frequency: PLLOUT = PLLIN*VDIV = Mhz*48 = 96MHz
* MCG Frequency: PLLOUT = 96MHz
*/
#if defined(CONFIG_TEENSY_3X_OVERCLOCK)
/* PLL Configuration */
# define BOARD_PRDIV 8 /* PLL External Reference Divider */
# define BOARD_VDIV 48 /* PLL VCO Divider (frequency multiplier) */
/* SIM CLKDIV1 dividers */
# define BOARD_OUTDIV1 1 /* Core = MCG, 96MHz */
# define BOARD_OUTDIV2 2 /* Bus = MCG/2, 48MHz */
# define BOARD_OUTDIV3 2 /* FlexBus = MCG/2, 48MHz */
# define BOARD_OUTDIV4 4 /* Flash clock = MCG/4, 24MHz */
#elif defined(CONFIG_ARCH_CHIP_MK20DX256VLH7)
/* PLL Configuration */
# define BOARD_PRDIV 8 /* PLL External Reference Divider */
# define BOARD_VDIV 36 /* PLL VCO Divider (frequency multiplier) */
/* SIM CLKDIV1 dividers */
# define BOARD_OUTDIV1 1 /* Core = MCG, 72MHz */
# define BOARD_OUTDIV2 2 /* Bus = MCG/2, 36MHz */
# define BOARD_OUTDIV3 2 /* FlexBus = MCG/2, 36MHz */
# define BOARD_OUTDIV4 3 /* Flash clock = MCG/3, 72MHz */
#elif defined(CONFIG_ARCH_CHIP_MK20DX128VLH5)
/* PLL Configuration */
# define BOARD_PRDIV 8 /* PLL External Reference Divider */
# define BOARD_VDIV 25 /* PLL VCO Divider (frequency multiplier) */
/* SIM CLKDIV1 dividers */
# define BOARD_OUTDIV1 1 /* Core = MCG, 50MHz */
# define BOARD_OUTDIV2 1 /* Bus = MCG/1, 50MHz */
# define BOARD_OUTDIV3 1 /* FlexBus = MCG/1, 20MHz */
# define BOARD_OUTDIV4 2 /* Flash clock = MCG/2, 25MHz */
#endif
#define BOARD_PLLIN_FREQ (BOARD_EXTAL_FREQ / BOARD_PRDIV)
#define BOARD_PLLOUT_FREQ (BOARD_PLLIN_FREQ * BOARD_VDIV)
#define BOARD_MCG_FREQ BOARD_PLLOUT_FREQ
#define BOARD_CORECLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV1)
#define BOARD_BUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV2)
#define BOARD_FLEXBUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV3)
#define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4)
/* LED definitions ******************************************************************/
/* A single LED is available driven by PTC5. The LED is grounded so bringing PTC5
* high will illuminate the LED.
*/
/* LED index values for use with board_userled() */
#define BOARD_LED 0
#define BOARD_NLEDS 1
/* LED bits for use with board_userled_all() */
#define BOARD_LED_BIT (1 << BOARD_LED)
/* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
* control the LED as defined below. Thus if the LED is statically on, NuttX has
* successfully booted and is, apparently, running normally. If the LED is
* flashing at approximately 2Hz, then a fatal error has been detected and the
* system has halted.
*/
#define LED_STARTED 0 /* STATUS LED=OFF */
#define LED_HEAPALLOCATE 0 /* STATUS LED=OFF */
#define LED_IRQSENABLED 0 /* STATUS LED=OFF */
#define LED_STACKCREATED 1 /* STATUS LED=ON */
#define LED_INIRQ 2 /* STATUS LED=no change */
#define LED_SIGNAL 2 /* STATUS LED=no change */
#define LED_ASSERTION 2 /* STATUS LED=no change */
#define LED_PANIC 3 /* STATUS LED=flashing */
/* Button definitions ***************************************************************/
/* The teensy-3.1 board has no standard GPIO contact buttons */
/* Alternative pin resolution *******************************************************/
/* The K20 has three UARTs with pin availability as follows:
*
* --------- ------ ----------- -------------------------
* UART PORT BOARD PJRC PINOUT DESCRIPTION
* FUNCTION LABEL
* --------- ------ ----------- -------------------------
* UART0_RX PTA1 (See above) MINI54TAN / Bootloader
* PTB16 Pin 0 RX1 / Touch
* PTD6 Pin 21 / A7 RX1 / CS / PWM
* UART0_TX PTA2 (See above) MINI54TAN / Bootloader
* PTB17 Pin 1 TX1 / Touch
* PTD7 Pin 5 TX1 / PWM
* --------- ------ ----------- -------------------------
* UART1_RX PTC3 Pin 9 RX2 / CS / PWM
* PTE1 Pad 26 (Pad on back of board)
* UART1_TX PTC4 Pin 10 TX2 / CS / PWM
* PTE0 Pad 31 (Pad on back of board)
* --------- ------ ----------- -------------------------
* UART2_RX PTD2 Pin 7 RX3 / DOUT
* UART2_TX PTD3 Pin 8 TX3 / DIN
* --------- ------ ----------- -------------------------
*
* The default serial console is UART0 on pins 0 (RX) and 1 (TX).
*/
#ifdef CONFIG_KINETIS_UART0
# define PIN_UART0_RX PIN_UART0_RX_2
# define PIN_UART0_TX PIN_UART0_TX_2
#endif
#ifdef CONFIG_KINETIS_UART1
# define PIN_UART0_RX PIN_UART1_RX_1
# define PIN_UART0_TX PIN_UART1_TX_1
#endif
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: kinetis_boardinitialize
*
* Description:
* All STM32 architectures must provide the following entry point. This entry point
* is called early in the initialization -- after all memory has been configured
* and mapped but before any devices have been initialized.
*
************************************************************************************/
void kinetis_boardinitialize(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_TEENSY_3X_INCLUDE_BOARD_H */
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