061728b440
arm: sam34: codestyle fixes
* arm: sam34: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: sama5: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
236 lines
8.8 KiB
C
236 lines
8.8 KiB
C
/****************************************************************************
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* boards/arm/sam34/arduino-due/include/board.h
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*
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* Copyright (C) 2013 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 __BOARDS_ARM_SAM34_ARDUINO_DUE_INCLUDE_BOARD_H
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#define __BOARDS_ARM_SAM34_ARDUINO_DUE_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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# include <stdbool.h>
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# ifdef CONFIG_SAM34_GPIO_IRQ
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# include <arch/irq.h>
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# endif
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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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/* After power-on reset, the SAM3X device is running on a 4MHz internal RC.
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* These definitions will configure clocking
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*
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* MAINOSC: Frequency = 12MHz (crystal)
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* PLLA: PLL Divider = 1, Multiplier = 14 to generate PLLACK = 168MHz
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* Master Clock (MCK): Source = PLLACK, Prescalar = 1 to generate MCK = 84MHz
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* CPU clock: 84MHz
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*/
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#define BOARD_32KOSC_FREQUENCY (32768)
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#define BOARD_SCLK_FREQUENCY (BOARD_32KOSC_FREQUENCY)
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#define BOARD_MAINOSC_FREQUENCY (12000000) /* MAINOSC: 12MHz crystal on-board */
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/* Main oscillator register settings.
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*
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* The start up time should be should be:
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* Start Up Time = 8 * MOSCXTST / SLCK = 56 Slow Clock Cycles.
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*/
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#define BOARD_CKGR_MOR_MOSCXTST (62 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */
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/* PLLA configuration.
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*
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* Divider = 1
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* Multipler = 14
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*/
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#define BOARD_CKGR_PLLAR_MUL (13 << PMC_CKGR_PLLAR_MUL_SHIFT)
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#define BOARD_CKGR_PLLAR_COUNT (63 << PMC_CKGR_PLLAR_COUNT_SHIFT)
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#define BOARD_CKGR_PLLAR_DIV PMC_CKGR_PLLAR_DIV_BYPASS
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/* PMC master clock register settings.
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*
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* Source = PLLA
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* Divider = 2
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*/
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#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA
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#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2
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/* USB UTMI PLL start-up time */
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#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT)
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/* Resulting frequencies */
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#define BOARD_PLLA_FREQUENCY (168000000) /* PLLACK: 14 * 12Mhz / 1 */
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#define BOARD_MCK_FREQUENCY (84000000) /* MCK: PLLACK / 2 */
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#define BOARD_CPU_FREQUENCY (84000000) /* CPU: MCK */
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/* HSMCI clocking
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*
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* Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock
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* (MCK) divided by (2*(CLKDIV+1)).
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*
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* MCI_SPEED = MCCK / (2*(CLKDIV+1))
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* CLKDIV = MCCK / MCI_SPEED / 2 - 1
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*
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* Where CLKDIV has a range of 0-255.
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*/
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/* MCK = 84MHz, CLKDIV = 104,
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* MCI_SPEED = 84MHz / 2 * (104+1) = 400 KHz
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*/
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#define HSMCI_INIT_CLKDIV (104 << HSMCI_MR_CLKDIV_SHIFT)
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/* MCK = 84MHz, CLKDIV = 2, MCI_SPEED = 84MHz / 2 * (2+1) = 14 MHz */
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#define HSMCI_MMCXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT)
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/* MCK = 84MHz, CLKDIV = 1, MCI_SPEED = 84MHz / 2 * (1+1) = 21 MHz */
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#define HSMCI_SDXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT)
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#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV
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/* FLASH wait states
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*
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* FWS MAX FREQUENCY
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* 1.62V 1.8V
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* --- ----- ------
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* 0 17MHz 19MHz
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* 1 45MHz 50MHz
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* 2 58MHz 64MHz
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* 3 70MHz 80MHz
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* 4 78MHz 90MHz
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*/
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#define BOARD_FWS 4
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/* LED definitions **********************************************************/
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/* There are three user-controllable LEDs on board the Arduino Due board:
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*
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* LED GPIO
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* ---------------- -----
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* L Amber LED PB27
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* TX Yellow LED PA21
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* RX Yellow LED PC30
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*
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* LED L is connected to ground and can be illuminated by driving the PB27
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* output high. The TX and RX LEDs are pulled high and can be illuminated by
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* driving the corresponding
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* GPIO output to low.
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*/
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/* LED index values for use with board_userled() */
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#define BOARD_LED_L 0
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#define BOARD_LED_RX 1
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#define BOARD_LED_TX 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_L_BIT (1 << BOARD_LED_L)
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#define BOARD_LED_RX_BIT (1 << BOARD_LED_RX)
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#define BOARD_LED_TX_BIT (1 << BOARD_LED_TX)
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/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
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* defined. In that case, the usage by the board port is defined in
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* include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
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* events as follows:
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*
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* SYMBOL MEANING LED STATE
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* L TX RX
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* ----------------------- -------------------------- -------- -------- --------
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*/
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#define LED_STARTED 0 /* NuttX has been started OFF OFF OFF */
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#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF OFF */
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#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF OFF */
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#define LED_STACKCREATED 1 /* Idle stack created ON OFF OFF */
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#define LED_INIRQ 2 /* In an interrupt N/C GLOW OFF */
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#define LED_SIGNAL 2 /* In a signal handler N/C GLOW OFF */
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#define LED_ASSERTION 2 /* An assertion failed N/C GLOW OFF */
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#define LED_PANIC 3 /* The system has crashed N/C N/C Blinking */
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#define LED_PANIC 3 /* MCU is is sleep mode ------ Not used -------- */
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/* Thus if LED L is statically on, NuttX has successfully booted and is,
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* apparently, running normmally. If LED RX is glowing, then NuttX is
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* handling interrupts (and also signals and assertions). If TX is flashing
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* at approximately 2Hz, then a fatal error has been detected and the system
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*/
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/* Button definitions *******************************************************/
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/* There are no buttons on the Arduino Due board. */
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/* GPIO pin configurations **************************************************/
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#if 1 /* #ifdef CONFIG_ARDUINO_DUE_REV3 works with REV2 as well */
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/* This port was performed on the Arduino Due Rev 2 board.
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* A NuttX user reported issues with the serial port on his Aduino Due Rev 3
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* board.
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* That problem was resolved as follows:
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*
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* "... The issue was in my hardware. I found the difference between Arduino
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* Due shematics (revision R2) and actual PCB layout of my Arduino (revision
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* R3). On a schematics which I download from arduino.cc was shown that 2nd
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* pin of IC10 is connected to the ground, but on my Arduino the 2nd pin
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* of IC10 was connected to its 1st pin instead of ground and in my case
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* IC10 works in open-drain mode, but RX0 pin on SAM3x doesn't have pull-up
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* and thus TX signal from AtMega16U2 can't reach the SAM3x input pin, on
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* this pin always '0'.
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*
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* "My solution is to enable internal pull-up in SAM3x. ...
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* Now shell console on UART0 (via USB programming connector) of Arduino Due
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* Due works as expected."
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*/
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# undef GPIO_UART0_RXD
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# define GPIO_UART0_RXD (GPIO_PERIPHA | GPIO_CFG_DEFAULT | GPIO_PORT_PIOA | \
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GPIO_PIN8 | GPIO_CFG_PULLUP)
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#endif
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#endif /* __BOARDS_ARM_SAM34_ARDUINO_DUE_INCLUDE_BOARD_H */
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