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configs/tm4c1294-launchpad/src: Add IRQBUTTONS support to tm4c1294 launchpad.

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This commit is contained in:
Lwazi Dube 2018-12-31 17:07:09 -06:00 committed by Gregory Nutt
parent 37af1d4c76
commit 7d2413a6a0
4 changed files with 74 additions and 6 deletions
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1
configs/Kconfig
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@ -1552,6 +1552,7 @@ config ARCH_BOARD_TM4C1294_LAUNCHPAD
depends on ARCH_CHIP_TM4C1294NC
select ARCH_HAVE_LEDS
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS
---help---
Tiva EK-TM4C1294XL LaunchPad.

15
configs/tm4c1294-launchpad/src/tm4c1294-launchpad.h
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@ -1,7 +1,7 @@
/************************************************************************************
* configs/tm4c1294-launchpad/src/ek-tm4c1294xl.h
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Copyright (C) 2015, 2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -122,8 +122,17 @@
* PJ1 USR_SW2
* --- ------------
*/
#define GPIO_SW1 (GPIO_FUNC_INPUT | GPIO_PORTJ | GPIO_PIN_0)
#define GPIO_SW2 (GPIO_FUNC_INPUT | GPIO_PORTJ | GPIO_PIN_1)
#ifdef CONFIG_ARCH_IRQBUTTONS
# define GPIO_SW1 (GPIO_FUNC_INTERRUPT | GPIO_INT_BOTHEDGES | \
GPIO_STRENGTH_2MA | GPIO_PADTYPE_STDWPU | \
GPIO_PORTJ | GPIO_PIN_0)
# define GPIO_SW2 (GPIO_FUNC_INTERRUPT | GPIO_INT_BOTHEDGES | \
GPIO_STRENGTH_2MA | GPIO_PADTYPE_STDWPU | \
GPIO_PORTJ | GPIO_PIN_1)
#else
# define GPIO_SW1 (GPIO_FUNC_INPUT | GPIO_PORTJ | GPIO_PIN_0)
# define GPIO_SW2 (GPIO_FUNC_INPUT | GPIO_PORTJ | GPIO_PIN_1)
#endif
/* SPI Chip selects ****************************************************************/
/* SSI0: PA3 is used for SSI0 chip select to the second booster pack (No pull-

19
configs/tm4c1294-launchpad/src/tm4c_bringup.c
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@ -49,6 +49,10 @@
#include <nuttx/drivers/pwm.h>
#ifdef CONFIG_BUTTONS
# include <nuttx/input/buttons.h>
#endif
#include "tiva_i2c.h"
#include "tiva_pwm.h"
#include "tiva_qencoder.h"
@ -306,9 +310,7 @@ static void tm4c_qei(void)
int tm4c_bringup(void)
{
#if defined(HAVE_TIMER) || defined(HAVE_HCIUART)
int ret;
#endif
/* Register I2C drivers on behalf of the I2C tool */
@ -337,6 +339,8 @@ int tm4c_bringup(void)
#endif
#ifdef HAVE_HCIUART
/* Register the Bluetooth HCI UART device */
ret = hciuart_dev_initialize();
if (ret < 0)
{
@ -344,5 +348,16 @@ int tm4c_bringup(void)
}
#endif
#ifdef CONFIG_BUTTONS_LOWER
/* Register the BUTTON driver */
ret = btn_lower_initialize("/dev/buttons");
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
}
#endif
UNUSED(ret);
return OK;
}

45
configs/tm4c1294-launchpad/src/tm4c_buttons.c
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@ -1,7 +1,7 @@
/****************************************************************************
* configs/tm4c1294-launchpad/src/tm4c_buttons.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Copyright (C) 2015, 2018 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -96,6 +96,12 @@ void board_button_initialize(void)
{
tiva_configgpio(g_buttons[i]);
}
#ifdef CONFIG_ARCH_IRQBUTTONS
/* Configure GPIO interrupts */
(void)tiva_gpioirqinitialize();
#endif
}
/****************************************************************************
@ -125,4 +131,41 @@ uint32_t board_buttons(void)
return ret;
}
/****************************************************************************
* Name: board_button_irq
*
* Description:
* This function may be called to register an interrupt handler that will
* be called when a button is depressed or released.
*
****************************************************************************/
#ifdef CONFIG_ARCH_IRQBUTTONS
int board_button_irq(int id, xcpt_t irqhandler, FAR void *arg)
{
int ret;
if (id < 0 || id >= NUM_BUTTONS )
{
ret = -EINVAL;
}
else
{
/* Are we attaching or detaching? */
if (irqhandler != NULL)
{
ret = tiva_gpioirqattach(g_buttons[id], irqhandler, arg);
}
else
{
ret = tiva_gpioirqdetach(g_buttons[id]);
}
}
return ret;
}
#endif
#endif /* CONFIG_ARCH_BUTTONS */