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nuttx/boards/arm/sam34/arduino-due/include/board.h
Alin Jerpelea 6f14299dd0 boards: nxstyle fixes 
nxstyle fixes to pass the CI check

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-18 22:58:27 -07:00

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/****************************************************************************
* boards/arm/sam34/arduino-due/include/board.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_SAM34_ARDUINO_DUE_INCLUDE_BOARD_H
#define __BOARDS_ARM_SAM34_ARDUINO_DUE_INCLUDE_BOARD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
# ifdef CONFIG_SAM34_GPIO_IRQ
# include <arch/irq.h>
# endif
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* After power-on reset, the SAM3X device is running on a 4MHz internal RC.
* These definitions will configure clocking
*
* MAINOSC: Frequency = 12MHz (crystal)
* PLLA: PLL Divider = 1, Multiplier = 14 to generate PLLACK = 168MHz
* Master Clock (MCK): Source = PLLACK, Prescalar = 1 to generate MCK = 84MHz
* CPU clock: 84MHz
*/
#define BOARD_32KOSC_FREQUENCY (32768)
#define BOARD_SCLK_FREQUENCY (BOARD_32KOSC_FREQUENCY)
#define BOARD_MAINOSC_FREQUENCY (12000000) /* MAINOSC: 12MHz crystal on-board */
/* Main oscillator register settings.
*
* The start up time should be should be:
* Start Up Time = 8 * MOSCXTST / SLCK = 56 Slow Clock Cycles.
*/
#define BOARD_CKGR_MOR_MOSCXTST (62 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */
/* PLLA configuration.
*
* Divider = 1
* Multipler = 14
*/
#define BOARD_CKGR_PLLAR_MUL (13 << PMC_CKGR_PLLAR_MUL_SHIFT)
#define BOARD_CKGR_PLLAR_COUNT (63 << PMC_CKGR_PLLAR_COUNT_SHIFT)
#define BOARD_CKGR_PLLAR_DIV PMC_CKGR_PLLAR_DIV_BYPASS
/* PMC master clock register settings.
*
* Source = PLLA
* Divider = 2
*/
#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA
#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2
/* USB UTMI PLL start-up time */
#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT)
/* Resulting frequencies */
#define BOARD_PLLA_FREQUENCY (168000000) /* PLLACK: 14 * 12Mhz / 1 */
#define BOARD_MCK_FREQUENCY (84000000) /* MCK: PLLACK / 2 */
#define BOARD_CPU_FREQUENCY (84000000) /* CPU: MCK */
/* HSMCI clocking
*
* Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock
* (MCK) divided by (2*(CLKDIV+1)).
*
* MCI_SPEED = MCCK / (2*(CLKDIV+1))
* CLKDIV = MCCK / MCI_SPEED / 2 - 1
*
* Where CLKDIV has a range of 0-255.
*/
/* MCK = 84MHz, CLKDIV = 104,
* MCI_SPEED = 84MHz / 2 * (104+1) = 400 KHz
*/
#define HSMCI_INIT_CLKDIV (104 << HSMCI_MR_CLKDIV_SHIFT)
/* MCK = 84MHz, CLKDIV = 2, MCI_SPEED = 84MHz / 2 * (2+1) = 14 MHz */
#define HSMCI_MMCXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT)
/* MCK = 84MHz, CLKDIV = 1, MCI_SPEED = 84MHz / 2 * (1+1) = 21 MHz */
#define HSMCI_SDXFR_CLKDIV (1 << HSMCI_MR_CLKDIV_SHIFT)
#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV
/* FLASH wait states
*
* FWS MAX FREQUENCY
* 1.62V 1.8V
* --- ----- ------
* 0 17MHz 19MHz
* 1 45MHz 50MHz
* 2 58MHz 64MHz
* 3 70MHz 80MHz
* 4 78MHz 90MHz
*/
#define BOARD_FWS 4
/* LED definitions **********************************************************/
/* There are three user-controllable LEDs on board the Arduino Due board:
*
* LED GPIO
* ---------------- -----
* L Amber LED PB27
* TX Yellow LED PA21
* RX Yellow LED PC30
*
* LED L is connected to ground and can be illuminated by driving the PB27
* output high. The TX and RX LEDs are pulled high and can be illuminated by
* driving the corresponding
* GPIO output to low.
*/
/* LED index values for use with board_userled() */
#define BOARD_LED_L 0
#define BOARD_LED_RX 1
#define BOARD_LED_TX 2
#define BOARD_NLEDS 3
/* LED bits for use with board_userled_all() */
#define BOARD_LED_L_BIT (1 << BOARD_LED_L)
#define BOARD_LED_RX_BIT (1 << BOARD_LED_RX)
#define BOARD_LED_TX_BIT (1 << BOARD_LED_TX)
/* 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_leds.c. The LEDs are used to encode OS-related
* events as follows:
*
* SYMBOL MEANING LED STATE
* L TX RX
* ----------------------- -------------------------- ---- ---- ----
*/
#define LED_STARTED 0 /* NuttX has been started OFF OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF OFF */
#define LED_INIRQ 2 /* In an interrupt N/C GLOW OFF */
#define LED_SIGNAL 2 /* In a signal handler N/C GLOW OFF */
#define LED_ASSERTION 2 /* An assertion failed N/C GLOW OFF */
#define LED_PANIC 3 /* The system has crashed N/C N/C Blinking */
#define LED_PANIC 3 /* MCU is is sleep mode ---- Not used ---- */
/* Thus if LED L is statically on, NuttX has successfully booted and is,
* apparently, running normmally. If LED RX is glowing, then NuttX is
* handling interrupts (and also signals and assertions). If TX is flashing
* at approximately 2Hz, then a fatal error has been detected and the system
*/
/* Button definitions *******************************************************/
/* There are no buttons on the Arduino Due board. */
/* GPIO pin configurations **************************************************/
#if 1 /* #ifdef CONFIG_ARDUINO_DUE_REV3 works with REV2 as well */
/* This port was performed on the Arduino Due Rev 2 board.
* A NuttX user reported issues with the serial port on his Aduino Due Rev 3
* board.
* That problem was resolved as follows:
*
* "... The issue was in my hardware. I found the difference between Arduino
* Due shematics (revision R2) and actual PCB layout of my Arduino
* (revision R3).
* On a schematics which I download from arduino.cc was shown that 2nd
* pin of IC10 is connected to the ground, but on my Arduino the 2nd pin
* of IC10 was connected to its 1st pin instead of ground and in my case
* IC10 works in open-drain mode, but RX0 pin on SAM3x doesn't have pull-up
* and thus TX signal from AtMega16U2 can't reach the SAM3x input pin, on
* this pin always '0'.
*
* "My solution is to enable internal pull-up in SAM3x. ...
* Now shell console on UART0 (via USB programming connector) of Arduino
* Due works as expected."
*/
# undef GPIO_UART0_RXD
# define GPIO_UART0_RXD (GPIO_PERIPHA | GPIO_CFG_DEFAULT | GPIO_PORT_PIOA | \
GPIO_PIN8 | GPIO_CFG_PULLUP)
#endif
#endif /* __BOARDS_ARM_SAM34_ARDUINO_DUE_INCLUDE_BOARD_H */
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