/**************************************************************************** * configs/16z/z16f_leds.c * * Copyright (C) 2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * ****************************************************************************/ /* LEDs * * The 16z board has 7 LEDs, five of which are controllable via software: * * ----- ------ ------ ------------------------------------ * LED Color Signal Description * ----- ------ ------ ------------------------------------ * LED1 Red 3V3 Indicates the presence of +3.3V * LED2 Red 5V Indicates the presence of +5V * LED3 Blue ~RF Controlled via PH2. Notes: 1, 2 * LED4 Green ~SXM Controlled via PH3. Notes: 1, 3 * LED5 Green ~SD1 Controlled via PJ0. Notes: 1, 4 * LED6 Yellow ~SD2 Controlled via PJ4. Notes: 1, 5 * LED7 Yellow ~SD0 Controlled via PJ7. Notes: 1, 6 * ----- ------ ------ ------------------------------------ * * Note 1: Pulled high so a low output illuminates the LED. * Note 2: PH2/~RF is also used by the RF transceiver, X2. That part is not * populated on my board. * Note 3: ~SXM is the chip select for the serial memory, U4. That part is * not populated on my board. * Note 4: ~SD1 is the chip select for the SD card 1, X11. * Note 5: ~SD2 is the chip select for the SD card 2, X10. * Note 6: ~SD0 is the chip select for the microSD 0, X12. * * In conclusion: None of the LEDs are available to indicate software status * without potentially sacrificing board functionality. If the RF transceiver * is not installed (CONFIG_16Z_RFTRANSCEIVER=n) and if LED support is * requested (CONFIG_ARCH_LEDS), then LED3 will be used to indicate status: A * solid color means that the board has boot successfully; flashing at a rate * of approximately 2Hz indicates a software failure. */ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include "up_internal.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: board_led_initialize ****************************************************************************/ #ifdef CONFIG_ARCH_LEDS void board_led_initialize(void) { /* All GPIO initialization is done in up_lowinit() */ } /**************************************************************************** * Name: board_led_on ****************************************************************************/ void board_led_on(int led) { #if defined(HAVE_16Z_LED3) || defined(HAVE_16Z_LED4) /* The following operations must be atomic */ irqstate_t flags = irqsave(); uint8_t regval = getreg8(Z16F_GPIOH_OUT); #ifdef HAVE_16Z_LED3 /* LED3 is available at PH2 and illuminated by a low output */ if ((led & __LED3_BIT) != 0) { regval &= ~(1 << 2); } #endif #ifdef HAVE_16Z_LED4 /* LED4 is available at PH3 and illuminated by a low output */ if ((led & __LED4_BIT) != 0) { regval &= ~(1 << 3); } #endif putreg8(regval, Z16F_GPIOH_OUT); irqrestore(flags); #endif } /**************************************************************************** * Name: board_led_off ****************************************************************************/ void board_led_off(int led) { #if defined(HAVE_16Z_LED3) || defined(HAVE_16Z_LED4) /* The following operations must be atomic */ irqstate_t flags = irqsave(); uint8_t regval = getreg8(Z16F_GPIOH_OUT); #ifdef HAVE_16Z_LED3 /* LED3 is available at PH2 and illuminated by a low output */ if ((led & __LED3_BIT) != 0) { regval |= (1 << 2); } #endif #ifdef HAVE_16Z_LED4 /* LED4 is available at PH3 and illuminated by a low output */ if ((led & __LED4_BIT) != 0) { regval |= (1 << 3); } #endif putreg8(regval, Z16F_GPIOH_OUT); irqrestore(flags); #endif } #endif /* CONFIG_ARCH_LEDS */