272 lines
11 KiB
C
272 lines
11 KiB
C
/************************************************************************************
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* configs/freedom-k64f/include/board.h
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __CONFIG_FREEDOM_K64F_INCLUDE_BOARD_H
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#define __CONFIG_FREEDOM_K64F_INCLUDE_BOARD_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#ifndef __ASSEMBLY__
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# include <stdint.h>
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#endif
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Clocking *************************************************************************/
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/* The Freedom K64F uses a 50MHz external clock from the Micrel Ethernet PHY. The
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* Kinetis MCU startup from an internal digitally-controlled oscillator (DCO). Nuttx
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* will enable the main external oscillator (EXTAL0/XTAL0). The external
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* oscillator/resonator can range from 32.768 KHz up to 50 MHz. The default external
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* source for the MCG oscillator inputs (EXTAL) is 50 MHz clock source from Micrel
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* Ethernet PHY.
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*/
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#define BOARD_EXTCLOCK 1 /* External clock */
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#define BOARD_EXTAL_FREQ 50000000 /* 50MHz Oscillator from Micrel PHY */
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#define BOARD_XTAL32_FREQ 32768 /* 32KHz RTC Oscillator */
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/* PLL Configuration. Either the external clock or crystal frequency is used to
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* select the PRDIV value. Only reference clock frequencies are supported that will
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* produce a 2MHz reference clock to the PLL.
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*
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* PLL Input frequency: PLLIN = REFCLK / PRDIV = 50 Mhz / 20 = 2.5 MHz
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* PLL Output frequency: PLLOUT = PLLIN * VDIV = 2.5 Mhz * 48 = 120 MHz
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* MCG Frequency: PLLOUT = 120 MHz
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*
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* PRDIV register value is the divider minus one. So 20 -> 19
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* VDIV regiser value is offset by 24. So 28 -> 24
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*/
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#define BOARD_PRDIV 20 /* PLL External Reference Divider */
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#define BOARD_VDIV 48 /* PLL VCO Divider (frequency multiplier) */
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#define BOARD_PLLIN_FREQ (BOARD_EXTAL_FREQ / BOARD_PRDIV)
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#define BOARD_PLLOUT_FREQ (BOARD_PLLIN_FREQ * BOARD_VDIV)
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#define BOARD_MCG_FREQ BOARD_PLLOUT_FREQ
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/* SIM CLKDIV1 dividers */
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#define BOARD_OUTDIV1 1 /* Core = MCG, 120 MHz */
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#define BOARD_OUTDIV2 2 /* Bus = MCG / 2, 60 MHz */
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#define BOARD_OUTDIV3 2 /* FlexBus = MCG / 2, 60 MHz */
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#define BOARD_OUTDIV4 5 /* Flash clock = MCG / 5, 24 MHz */
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#define BOARD_CORECLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV1)
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#define BOARD_BUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV2)
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#define BOARD_FLEXBUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV3)
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#define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4)
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/* SDHC clocking ********************************************************************/
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/* SDCLK configurations corresponding to various modes of operation. Formula is:
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*
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* SDCLK frequency = (base clock) / (prescaler * divisor)
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*
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* The SDHC module is always configure configured so that the core clock is the base
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* clock. Possible values for presscaler and divisor are:
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*
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* SDCLKFS: {2, 4, 8, 16, 32, 63, 128, 256}
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* DVS: {1..16}
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*/
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/* Identification mode: Optimal 400KHz, Actual 120MHz / (32 * 10) = 375 Khz */
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#define BOARD_SDHC_IDMODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV32
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#define BOARD_SDHC_IDMODE_DIVISOR SDHC_SYSCTL_DVS_DIV(10)
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/* MMC normal mode: Optimal 20MHz, Actual 120MHz / (2 * 3) = 20 MHz */
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#define BOARD_SDHC_MMCMODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
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#define BOARD_SDHC_MMCMODE_DIVISOR SDHC_SYSCTL_DVS_DIV(3)
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/* SD normal mode (1-bit): Optimal 20MHz, Actual 120MHz / (2 * 3) = 20 MHz */
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#define BOARD_SDHC_SD1MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
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#define BOARD_SDHC_SD1MODE_DIVISOR SDHC_SYSCTL_DVS_DIV(3)
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/* SD normal mode (4-bit): Optimal 25MHz, Actual 120MHz / (2 * 3) = 20 MHz (with DMA)
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* SD normal mode (4-bit): Optimal 20MHz, Actual 120MHz / (2 * 3) = 20 MHz (no DMA)
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*/
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#ifdef CONFIG_SDIO_DMA
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# define BOARD_SDHC_SD4MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
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# define BOARD_SDHC_SD4MODE_DIVISOR SDHC_SYSCTL_DVS_DIV(3)
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#else
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# define BOARD_SDHC_SD4MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
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# define BOARD_SDHC_SD4MODE_DIVISOR SDHC_SYSCTL_DVS_DIV(3)
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#endif
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/* LED definitions ******************************************************************/
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/* The Freedom K64F has a single RGB LED driven by the K64F as follows:
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*
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* LED K64
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* ------ -------------------------------------------------------
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* RED PTB22/SPI2_SOUT/FB_AD29/CMP2_OUT
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* BLUE PTB21/SPI2_SCK/FB_AD30/CMP1_OUT
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* GREEN PTE26/ENET_1588_CLKIN/UART4_CTS_b/RTC_CLKOUT/USB0_CLKIN
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*
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* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any
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* way. The following definitions are used to access individual LEDs.
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*/
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/* LED index values for use with board_userled() */
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#define BOARD_LED_R 0
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#define BOARD_LED_G 1
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#define BOARD_LED_B 2
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#define BOARD_NLEDS 3
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/* LED bits for use with board_userled_all() */
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#define BOARD_LED_R_BIT (1 << BOARD_LED_R)
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#define BOARD_LED_G_BIT (1 << BOARD_LED_G)
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#define BOARD_LED_B_BIT (1 << BOARD_LED_B)
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/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board
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* the Freedom K64F. The following definitions describe how NuttX controls
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* the LEDs:
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*
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* SYMBOL Meaning LED state
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* RED GREEN BLUE
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* ------------------- ---------------------------- ----------------- */
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#define LED_STARTED 1 /* NuttX has been started OFF OFF OFF */
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#define LED_HEAPALLOCATE 2 /* Heap has been allocated OFF OFF ON */
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#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF ON */
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#define LED_STACKCREATED 3 /* Idle stack created OFF ON OFF */
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#define LED_INIRQ 0 /* In an interrupt (no change) */
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#define LED_SIGNAL 0 /* In a signal handler (no change) */
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#define LED_ASSERTION 0 /* An assertion failed (no change) */
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#define LED_PANIC 4 /* The system has crashed FLASH OFF OFF */
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#undef LED_IDLE /* K64 is in sleep mode (Not used) */
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/* Button definitions ***************************************************************/
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/* Two push buttons, SW2 and SW3, are available on FRDM-K64F board, where SW2 is
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* connected to PTC6 and SW3 is connected to PTA4. Besides the general purpose
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* input/output functions, SW2 and SW3 can be low-power wake up signal. Also, only
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* SW3 can be a non-maskable interrupt.
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*
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* Switch GPIO Function
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* --------- ---------------------------------------------------------------
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* SW2 PTC6/SPI0_SOUT/PD0_EXTRG/I2S0_RX_BCLK/FB_AD9/I2S0_MCLK/LLWU_P10
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* SW3 PTA4/FTM0_CH1/NMI_b/LLWU_P3
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*/
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#define BUTTON_SW2 0
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#define BUTTON_SW3 1
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#define BUTTON_SW2_BIT (1 << BUTTON_SW2)
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#define BUTTON_SW3_BIT (1 << BUTTON_SW3)
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/* Alternative pin resolution *******************************************************/
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/* If there are alternative configurations for various pins in the
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* kinetis_k64pinmux.h header file, those alternative pins will be labeled with a
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* suffix like _1, _2, etc. The logic in this file must select the correct pin
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* configuration for the board by defining a pin configuration (with no suffix) that
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* maps to the correct alternative.
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*/
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/* The primary serial port interface signals are PTB16 UART0_RX and PTB17 UART0_TX.
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* These signals are connected to the OpenSDAv2 circuit.
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*/
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#define PIN_UART0_RX PIN_UART0_RX_3
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#define PIN_UART0_TX PIN_UART0_TX_3
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/* An alternative serial port might use a standard serial shield mounted
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* on the Freedom Board. In this case, Arduino pin D1 provides UART TX and
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* pin D0 privides UART RX.
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*
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* The I/O headers on the FRDM-K64F board are arranged to enable
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* compatibility with Arduino shield. The outer rows of pins (even numbered
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* pins) on the headers, share the same mechanical spacing and placement with
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* the I/O headers on the Arduino Revision 3 (R3) standard.
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*
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* The Arduino D0 and D1 pins then correspond to pins 2 and 4 on the J1 I/O
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* connector:
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*
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* Arduino Pin FRDM-K64F J1 Connector
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* ------------------------ -----------------------
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* UART TX, Arduino D1 pin Pin 4, PTC17, UART3_TX
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* UART RX, Arduino D0 pin Pin 2, PTC16, UART3_RX
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*/
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#define PIN_UART3_RX PIN_UART3_RX_2
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#define PIN_UART3_TX PIN_UART3_TX_2
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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* Name: kinetis_boardinitialize
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*
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* Description:
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* All STM32 architectures must provide the following entry point. This entry point
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* is called early in the intitialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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*
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************************************************************************************/
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void kinetis_boardinitialize(void);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __CONFIG_FREEDOM_K64F_INCLUDE_BOARD_H */
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