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nuttx/boards/arm/am335x/beaglebone-black/src/am335x_leds.c
Alin Jerpelea 8f3ed4e25d arch: arm: am335x: Petro Karashchenko: update licenses to Apache 
Petro Karashchenko has submitted the ICLA and we can migrate the licenses
 to Apache.

Ivan Petrov Ucherdzhiev has submitted the ICLA and we can migrate the licenses
 to Apache.

Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-04-01 12:13:12 -05:00

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/****************************************************************************
* boards/arm/am335x/beaglebone-black/src/am335x_leds.c
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "chip.h"
#include "arm_arch.h"
#include "arm_internal.h"
#include "beaglebone-black.h"
/* The beaglebone black has four user LEDs; all four can be controlled from
* software. All are tied to ground and, hence, illuminated by driving the
* output pins to a high value:
*
* 1. LED0 GPMC_A5 GPMC_A5/GMII2_TXD0/RGMII2_TD0/RMII2_TXD0/GPMC_A21/
* PR1_MII1_RXD3/eQEP1B_IN/GPIO1_21
* 2. LED1 GPMC_A6 GPMC_A6/GMII2_TXCLK/RGMII2_TCLK/MMC2_DAT4/GPMC_A22/
* PR1_MII1_RXD2/eQEP1_INDEX/GPIO1_22
* 3. LED2 GPMC_A7 GPMC_A7/GMII2_RXCLK/RGMII2_RCLK/MMC2_DAT5/GPMC_A23/
* PR1_MII1_RXD1/eQEP1_STROBE/GPIO1_23
* 4. LED3 GPMC_A8 GPMC_A8/GMII2_RXD3/RGMII2_RD3/MMC2_DAT6/GPMC_A24/
* PR1_MII1_RXD0/MCASP0_ACLKX/GPIO1_24
* 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/am335x_leds.c. The LEDs are used to encode OS-
* related events as follows:
*
* SYMBOL Meaning LED state
* LED1 LED3 LED4
* ----------------- ----------------------- ---- ---- ---- ------------
* LED_STARTED NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE Heap has been allocated OFF ON OFF
* LED_IRQSENABLED Interrupts enabled ON ON OFF
* LED_STACKCREATED Idle stack created ON ON OFF
* LED_INIRQ In an interrupt N/C N/C Soft glow
* LED_SIGNAL In a signal handler N/C N/C Soft glow
* LED_ASSERTION An assertion failed N/C N/C Soft glow
* LED_PANIC The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE MCU is is sleep mode Not used
*
* After booting, LED0 and 1 are not longer used by the system and can be
* used for other purposes by the application (Of course, all LEDs are
* available to the application if CONFIG_ARCH_LEDS is not defined.
*/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: am335x_led_initialize
*
* Description:
* Configure LEDs. LEDs are left in the OFF state.
*
****************************************************************************/
void am335x_led_initialize(void)
{
am335x_gpio_config(GPIO_LED0);
am335x_gpio_config(GPIO_LED1);
am335x_gpio_config(GPIO_LED2);
am335x_gpio_config(GPIO_LED3);
}
/****************************************************************************
* Name: board_autoled_on
*
* Description:
* Select the "logical" ON state:
*
* SYMBOL Value Meaning LED state
* LED1 LED3 LED4
* ----------------- ----- ----------------------- ---- ---- ------------
* LED_STARTED 0 NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE 1 Heap has been allocated OFF ON OFF
* LED_IRQSENABLED 2 Interrupts enabled ON ON OFF
* LED_STACKCREATED 2 Idle stack created ON ON OFF
* LED_INIRQ 3 In an interrupt N/C N/C Soft glow
* LED_SIGNAL 3 In a signal handler N/C N/C Soft glow
* LED_ASSERTION 3 An assertion failed N/C N/C Soft glow
* LED_PANIC 3 The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE --- MCU is is sleep mode Not used
*
* LED1 is illuminated by driving the output pins to a high value
* LED3 and LED 4 are illuminated by taking the output to ground.
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_on(int led)
{
switch (led)
{
case 0:
am335x_gpio_write(GPIO_LED0, true);
am335x_gpio_write(GPIO_LED1, true);
am335x_gpio_write(GPIO_LED3, true);
break;
case 1:
am335x_gpio_write(GPIO_LED0, false);
am335x_gpio_write(GPIO_LED1, false);
am335x_gpio_write(GPIO_LED3, true);
break;
case 2:
am335x_gpio_write(GPIO_LED0, false);
am335x_gpio_write(GPIO_LED1, true);
am335x_gpio_write(GPIO_LED3, true);
break;
case 3:
am335x_gpio_write(GPIO_LED3, false);
break;
}
}
#endif
/****************************************************************************
* Name: board_autoled_off
*
* Description:
* Select the "logical" OFF state:
*
* SYMBOL Value Meaning LED state
* LED1 LED3 LED4
* ----------------- ----- ----------------------- ---- ---- ------------
* LED_STARTED 0 NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE 1 Heap has been allocated OFF ON OFF
* LED_IRQSENABLED 2 Interrupts enabled ON ON OFF
* LED_STACKCREATED 2 Idle stack created ON ON OFF
* LED_INIRQ 3 In an interrupt N/C N/C Soft glow
* LED_SIGNAL 3 In a signal handler N/C N/C Soft glow
* LED_ASSERTION 3 An assertion failed N/C N/C Soft glow
* LED_PANIC 3 The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE --- MCU is is sleep mode Not used
*
* LED1 is illuminated by driving the output pins to a high value
* LED3 and LED 4 are illuminated by taking the output to ground.
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_off(int led)
{
switch (led)
{
case 0:
case 1:
case 2:
break;
case 3:
am335x_gpio_write(GPIO_LED3, true);
break;
}
}
#endif
/****************************************************************************
* Name: board_userled_initialize, board_userled, and board_userled_all
*
* Description:
* These interfaces allow user control of the board LEDs.
*
* If CONFIG_ARCH_LEDS is defined, then NuttX will control both on-board
* LEDs up until the completion of boot.
* Then it will continue to control LED1; LED0 is available for
* application use.
*
* If CONFIG_ARCH_LEDS is not defined, then both LEDs are available for
* application use.
*
****************************************************************************/
uint32_t board_userled_initialize(void)
{
/* Initialization already performed in am335x_led_initialize */
return BOARD_NLEDS;
}
void board_userled(int led, bool ledon)
{
switch (led)
{
case USER_LED0:
am335x_gpio_write(GPIO_LED0, ledon);
break;
case USER_LED1:
am335x_gpio_write(GPIO_LED1, ledon);
break;
#ifndef CONFIG_ARCH_LEDS
case USER_LED3:
am335x_gpio_write(GPIO_LED3, ledon);
break;
#endif
}
}
void board_userled_all(uint32_t ledset)
{
board_userled(USER_LED0, (ledset & USER_LED0) != 0);
board_userled(USER_LED1, (ledset & USER_LED1) != 0);
#ifndef CONFIG_ARCH_LEDS
board_userled(USER_LED3, (ledset & USER_LED3) != 0);
#endif
}
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