/**************************************************************************** * configs/beaglebone-black/src/am335x_leds.c * * Copyright (C) 2018 Petro Karashchenko. All rights reserved. * Author: Petro Karashchenko * * 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include "chip.h" #include "up_arch.h" #include "up_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. The 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. * ************************************************************************************/ void board_userled_initialize(void) { /* Initialization already performed in am335x_led_initialize */ } 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(uint8_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 }