nuttx/configs/tm4c1294-launchpad/include/board.h

/************************************************************************************
 * configs/tm4c1294-launchpad/include/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_TM4C1294_LAUNCHPAD_INCLUDE_BOARD_H
#define __CONFIGS_TM4C1294_LAUNCHPAD_INCLUDE_BOARD_H

/************************************************************************************
 * Included Files
 ************************************************************************************/

#ifndef __ASSEMBLY__
#  include <stdbool.h>
#endif

/************************************************************************************
 * Pre-processor Definitions
 ************************************************************************************/

/* Clocking *************************************************************************/

/* Crystals on-board the EK-TM4C1294XL include:
 *
 * 1. 25.0MHz (Y2) is connected to OSC0/1 pins and is used as the run mode input to
 *    the PLL.
 * 2. 32.768kHz (Y3) connected to XOSC0/1 and clocks the hibernation module.
 */

#define SYSCON_RCC_XTAL      SYSCON_RCC_XTAL16000KHZ /* On-board crystal is 25 MHz */
#define XTAL_FREQUENCY       25000000

/* Frequencies of other clock sources */

#define PIOSC_FREQUENCY      16000000 /* Precision internal oscillator */
#define RTCOSC_FREQUENCY     32768    /* Hibernation Module RTC Oscillator */
#define LFIOSC_FREQUENCY     33000    /* Low frequency internal oscillator */

/* The PLL generates Fvco according to the following formulae.  The input clock to
 * the PLL may be either the external crystal (Fxtal) or PIOSC (Fpiosc).  This
 * logic supports only the external crystal as the PLL source clock.
 *
 *   Fin  = Fxtal / (Q + 1 )(N + 1) -OR- Fpiosc / (Q + 1)(N + 1)
 *   Mdiv = Mint + (MFrac / 1024)
 *   Fvco = Fin * Mdiv
 *
 * Where the register fields Q and N actually hold (Q-1) and (N-1).   The following
 * setup then generates Fvco = 480MHz:
 *
 *   Fin  = 25 MHz / 1 / 5 = 5 MHz
 *   Mdiv = 96
 *   Fvco = 480
 */

#define BOARD_PLL_MINT       96        /* Integer part of PLL M value */
#define BOARD_PLL_MFRAC      0         /* Fractional part of PLL M value */
#define BOARD_PLL_N          5         /* PLL N value */
#define BOARD_PLL_Q          1         /* PLL Q value */

#define BOARD_FVCO_FREQUENCY 480000000 /* Resulting Fvco */

/* When the PLL is active, the system clock frequency (SysClk) is calculated using
 * the following equation:
 *
 *   SysClk = Fvco/ (sysdiv + 1)
 *
 * The following setup generates Sysclk = 120MHz:
 */

#define BOARD_PLL_SYSDIV     4         /* Sysclk = Fvco / 4 = 120MHz */
#define SYSCLK_FREQUENCY     120000000 /* Resulting SysClk frequency */

/* Alternate Clock (ALTCLK)
 *
 * The ALTCLK provides a clock source of numerous frequencies to the general-purpose
 * timer, SSI, and UART modules.  The default source for the ALTCLK is the Precision
 * Internal Oscillator (PIOSC).  The Hibernation Real-time Clock (RTCOSC) and Low
 * Frequency Internal Oscillator (LFIOSC) are alternatives.  If the RTCOSC Output is
 * selected, the clock source must also be enabled in the Hibernation module.
 */

#define BOARD_ALTCLKCFG      SYSCON_ALTCLKCFG_ALTCLK_PIOSC
#define ALTCLK_FREQUENCY     PIOSC_FREQUENCY

/* LED definitions ******************************************************************/
/* The EK-TM4C1294XL has a four green LEDs.
 *
 *   --- ------------
 *   Pin Pin Function
 *   --- ------------
 *   PN1 Green LED D1
 *   PN0 Green LED D2
 *   PF4 Green LED D3
 *   PF0 Green LED D4
 *   --- ------------
 */

/* LED index values for use with tiva_setled() */

#define BOARD_LED_D1              0
#define BOARD_LED_D2              1
#define BOARD_LED_D3              2
#define BOARD_LED_D4              3
#define BOARD_NLEDS               4

/* LED bits for use with tiva_setleds() */

#define BOARD_LED_D1_BIT           (1 << BOARD_LED_D1)
#define BOARD_LED_D2_BIT           (1 << BOARD_LED_D2)
#define BOARD_LED_D3_BIT           (1 << BOARD_LED_D3)
#define BOARD_LED_D4_BIT           (1 << BOARD_LED_D4)

/* If CONFIG_ARCH_LEDS is defined, then automated support for the EK-TM4C1294XL LED
 * will be included in the build:
 */
                                /* LED1 LED1  LED2 LED3 */
#define LED_STARTED       0     /* OFF  OFF   ON   OFF  */
#define LED_HEAPALLOCATE  1     /* NC   NC    NC   OFF  */
#define LED_IRQSENABLED   1     /* NC   NC    NC   OFF  */
#define LED_STACKCREATED  2     /* OFF  ON    OFF  OFF  */
#define LED_INIRQ         1     /* NC   NC    NC   OFF  */
#define LED_SIGNAL        1     /* NC   NC    NC   OFF  */
#define LED_ASSERTION     1     /* NC   NC    NC   OFF  */
#define LED_PANIC         3     /* ON   OFF   OFF  OFF (flashing 2Hz) */

/* Button definitions ***************************************************************/
/* There are four push buttons on the board. Two of them are user controllable.
 * The others are RESET and WAKE
 *
 *   --- ------------
 *   Pin Pin Function
 *   --- ------------
 *   PJ0 USR_SW1
 *   PJ1 USR_SW2
 *   --- ------------
 */

#define BUTTON_SW1        0
#define BUTTON_SW2        1
#define NUM_BUTTONS       2

#define BUTTON_SW1_BIT    (1 << BUTTON_SW1)
#define BUTTON_SW2_BIT    (1 << BUTTON_SW2)

/* Pin Multiplexing Disambiguation **************************************************/
/* UARTs
 *
 *   UART0: PA0-1 (fixed configuration)
 *   UART3: PJ0-1 to EM_TX/EM_RX or BOOSTER_PACK2_RX/BOOSTER_PACK2_TX(Depending
 *          on J12/J13)
 *   UART5: PH6-7 to BOOSTER_PACK1_RX/BOOSTER_PACK1_TX
 */

#define GPIO_UART3_RX     GPIO_UART3_RX_2
#define GPIO_UART3_TX     GPIO_UART3_TX_2

#define GPIO_UART5_RX     GPIO_UART5_RX_2
#define GPIO_UART5_TX     GPIO_UART5_TX_2

/* SSI:
 *
 *   SSI0: PA2-5 are used for SSI0 to the second booster pack (fixed configuration)
 *   SSI3: PF0/PF4-5/PH4/PQ0-2 are used for the SPI flash (on-board and SD card).
 *         PH4 selects the SD card and PQ1 selects the on-board SPI flash.
 */

#define GPIO_SSI3_CLK     GPIO_SSI3_CLK_2
#define GPIO_SSI3_FSS     GPIO_SSI3_FSS_2
#define GPIO_SSI3_XDAT0   GPIO_SSI3_XDAT0_2
#define GPIO_SSI3_XDAT1   GPIO_SSI3_XDAT1_1
#define GPIO_SSI3_XDAT2   GPIO_SSI3_XDAT2_1
#define GPIO_SSI3_XDAT3   GPIO_SSI3_XDAT3_1

/* I2C:
 *
 *   I2C3: PG4-5 are provide to the BoostPack 1 interface
 *   I2C7: PA4-5 are provide to the BoostPack 2 interface
 *   I2C6: PB6-7 are used for I2C to the EM connector.
 */

#define GPIO_I2C3_SCL     GPIO_I2C3_SCL_1
#define GPIO_I2C3_SDA     GPIO_I2C3_SDA_1
#define GPIO_I2C7_SCL     GPIO_I2C7_SCL_1
#define GPIO_I2C7_SDA     GPIO_I2C7_SDA_1
#define GPIO_I2C6_SCL     GPIO_I2C6_SCL_2
#define GPIO_I2C6_SDA     GPIO_I2C6_SDA_2

/* USB:
 *
 *   PB0-1/PD6-7/PL6-7 are used for USB (Only PD6-7 are not fixed configuration)
 */

#define GPIO_USB0_EPEN   GPIO_USB0_EPEN_3
#define GPIO_USB0_PFLT   GPIO_USB0_PFLT_2

/* Ethernet LEDs
 *
 *    PF1/PK4/PK6 are used for Ethernet LEDs.
 *      PK4/EN0RXD3/LED0
 *      PK6/EN0TXD2/LED1
 *      PF1/LED2
 */

#  define GPIO_EN0_LED0   GPIO_EN0_LED0_2
#  define GPIO_EN0_LED1   GPIO_EN0_LED1_2
#  define GPIO_EN0_LED2   GPIO_EN0_LED2_1

/* LCD
 *
 *   PF6-7/PJ6/PS4-5/PR0-7 are used for the LCD (fixed configuration).
 */

/************************************************************************************
 * Public Function Prototypes
 ************************************************************************************/

#ifndef __ASSEMBLY__

/************************************************************************************
 * Name: tiva_boardinitialize
 *
 * Description:
 *   All Tiva 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 tiva_boardinitialize(void);

/************************************************************************************
 * Name:  tiva_ledinit, tiva_setled, and tiva_setleds
 *
 * Description:
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LED.  If
 *   CONFIG_ARCH_LEDS is not defined, then the following interfaces are available to
 *   control the LEDs from user applications.
 *
 ************************************************************************************/

#ifndef CONFIG_ARCH_LEDS
void tiva_ledinit(void);
void tiva_setled(int led, bool ledon);
void tiva_setleds(uint8_t ledset);
#endif

#endif /* __ASSEMBLY__ */
#endif  /* __CONFIGS_TM4C1294_LAUNCHPAD_INCLUDE_BOARD_H */