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nuttx/boards/arm/am335x/beaglebone-black/src/am335x_leds.c
Xiang Xiao 54e630e14d arch: Merge up_arch.h into up_internal.h 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-03-14 09:32:17 +02:00

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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_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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