242 lines
9.1 KiB
C
242 lines
9.1 KiB
C
/************************************************************************************
|
|
* configs/flipnclick-sam3x/include/board.h
|
|
*
|
|
* Copyright (C) 2018 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_FLIPNCLICK_SAM3X_INCLUDE_BOARD_H
|
|
#define __CONFIGS_FLIPNCLICK_SAM3X_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 four LEDs on the top, blue side of the board. Only one can be
|
|
* controlled by software:
|
|
*
|
|
* LED L - PB27 (PWM13)
|
|
*
|
|
* There are also four LEDs on the back, white side of the board:
|
|
*
|
|
* LED A - PC6
|
|
* LED B - PC5
|
|
* LED C - PC7
|
|
* LED D - PC8
|
|
*
|
|
* A high output value illuminates the LEDs.
|
|
*
|
|
* LED index values for use with board_userled():
|
|
*/
|
|
|
|
#define BOARD_LED_L 0
|
|
#define BOARD_LED_A 1
|
|
#define BOARD_LED_B 2
|
|
#define BOARD_LED_C 3
|
|
#define BOARD_LED_D 4
|
|
#define BOARD_NLEDS 5
|
|
|
|
/* LED bits for use with board_userled_all() */
|
|
|
|
#define BOARD_LED_L_BIT (1 << BOARD_LED_L)
|
|
#define BOARD_LED_A_BIT (1 << BOARD_LED_A)
|
|
#define BOARD_LED_B_BIT (1 << BOARD_LED_B)
|
|
#define BOARD_LED_C_BIT (1 << BOARD_LED_C)
|
|
#define BOARD_LED_D_BIT (1 << BOARD_LED_D)
|
|
|
|
/* These LEDs are available to the application and are all available to the
|
|
* application 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
|
|
* L A B C D
|
|
* ---------------- ----------------------- --- --- --- --- ---*/
|
|
#define LED_STARTED 0 /* NuttX has been started OFF ON OFF OFF OFF */
|
|
#define LED_HEAPALLOCATE 1 /* Heap has been allocated OFF OFF ON OFF OFF */
|
|
#define LED_IRQSENABLED 2 /* Interrupts enabled OFF OFF OFF ON OFF */
|
|
#define LED_STACKCREATED 3 /* Idle stack created OFF OFF OFF OFF ON */
|
|
#define LED_INIRQ 4 /* In an interrupt GLO N/C N/C N/C N/C */
|
|
#define LED_SIGNAL 4 /* In a signal handler GLO N/C N/C N/C N/C */
|
|
#define LED_ASSERTION 4 /* An assertion failed GLO N/C N/C N/C N/C */
|
|
#define LED_PANIC 4 /* The system has crashed 2Hz N/C N/C N/C N/C */
|
|
#undef LED_IDLE /* MCU is is sleep mode ---- Not used ----- */
|
|
|
|
/* Thus if LED L is glowing on and all other LEDs are off (except LED D which
|
|
* was left on but is no longer controlled by NuttX and so may be in any state),
|
|
* NuttX has successfully booted and is, apparently, running normally and taking
|
|
* interrupts. If any of LEDs A-D are statically set, then NuttX failed to boot
|
|
* and the LED indicates the initialization phase where the failure occurred. If
|
|
* LED L is flashing at approximately 2Hz, then a fatal error has been detected and
|
|
* the system has halted.
|
|
*
|
|
* NOTE: After booting, LEDs A-D are no longer used by the system and may be
|
|
* controlled the application.
|
|
*/
|
|
|
|
/* Button definitions ***************************************************************/
|
|
/* There are no buttons on the Arduino Due board. */
|
|
|
|
/* GPIO pin configurations **********************************************************/
|
|
/* Universal Asynchronous Receiver Transceiver (UART)
|
|
*
|
|
* The SAM3X has a UART and 4 USARTS. The Programming port uses a USB-to-
|
|
* serial chip connected to the first of the MCU (RX0 and TX0 on PA8 and PA9,
|
|
* respectively). The output from that port is visible using the Arduino tool.
|
|
*
|
|
* Any of UART and USART0-3 may be used as a serial console. By default,
|
|
* UART0 is used as the serial console in all configurations.
|
|
*
|
|
* There are no alternatives for these pins.
|
|
*/
|
|
|
|
/* Universal Synchronous Asynchronous Receiver Transmitter (USART)
|
|
*
|
|
* The RX and TX pins are available on the Arduino connector D0 and D1 pins,
|
|
* respectively. These are connected to USART0, RXD0 and TXD0 which are PA10
|
|
* and PA11, respectively.
|
|
*
|
|
* There are four Click bus connectors with serial ports available as follows:
|
|
*
|
|
* Click A: USART0 RXD0 and TXD0 which are, again, PA10 and PA11.
|
|
* Click B: USART1 RXD1 and TXD1 which are PA12 and PA13, respectively.
|
|
* Click C: USART3 RXD3 and TXD3 which are PD5 and PD4, respectively.
|
|
* Click D: USART3 RXD3 and TXD3 which are, again, PD5 and PD4.
|
|
*
|
|
* There are no alternatives for these pins.
|
|
*/
|
|
|
|
#endif /* __CONFIGS_FLIPNCLICK_SAM3X_INCLUDE_BOARD_H */
|