diff options
Diffstat (limited to 'nuttx/configs/moteino-mega/src/up_leds.c')
| -rw-r--r-- | nuttx/configs/moteino-mega/src/up_leds.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/nuttx/configs/moteino-mega/src/up_leds.c b/nuttx/configs/moteino-mega/src/up_leds.c new file mode 100644 index 000000000..bc436aa5b --- /dev/null +++ b/nuttx/configs/moteino-mega/src/up_leds.c @@ -0,0 +1,189 @@ +/**************************************************************************** + * configs/moteino-mega/src/up_leds.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 <nuttx/config.h> + +#include <stdbool.h> +#include <debug.h> +#include <avr/io.h> + +#include "up_arch.h" +#include "up_internal.h" + +#include "atmega_internal.h" +#include "moteino_mega_internal.h" + +#ifdef CONFIG_ARCH_LEDS + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG + * with CONFIG_DEBUG_VERBOSE too) + */ + +#ifdef CONFIG_DEBUG_LEDS +# define leddbg lldbg +# ifdef CONFIG_DEBUG_VERBOSE +# define ledvdbg lldbg +# else +# define ledvdbg(x...) +# endif +#else +# define leddbg(x...) +# define ledvdbg(x...) +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static bool g_ncoff; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: atmega_ledinit + ****************************************************************************/ + +void atmega_ledinit(void) +{ + /* The MoteinoMEGA's single LED is on Port D, Pin 7. Configure this pin as an + * output and turn it OFF. The "other" side of the LED is onnected to + * ground through a resistor. Therefore, a logic value of 0 should turn + * the LED off. + */ + + DDRD |= (1 << 7); + PORTD &= ~(1 << 7); + g_ncoff = true; +} + +/**************************************************************************** + * Name: board_led_on + ****************************************************************************/ + +void board_led_on(int led) +{ + /* ON OFF + * LED_STARTED 0 OFF ON (never happens) + * LED_HEAPALLOCATE 0 OFF ON (never happens) + * LED_IRQSENABLED 0 OFF ON (never happens) + * LED_STACKCREATED 1 ON ON (never happens) + * LED_INIRQ 2 OFF NC (momentary) + * LED_SIGNAL 2 OFF NC (momentary) + * LED_ASSERTION 2 OFF NC (momentary) + * LED_PANIC 0 OFF ON (1Hz flashing) + */ + + switch (led) + { + case 0: + /* The steady state is OFF */ + + g_ncoff = true; + + case 2: + /* Turn the LED off */ + + PORTD &= ~(1 << 7); + break; + + case 1: + /* The steady state is ON */ + + PORTD |= (1 << 7); + g_ncoff = false; + break; + + default: + return; + } +} + +/**************************************************************************** + * Name: board_led_off + ****************************************************************************/ + +void board_led_off(int led) +{ + /* ON OFF + * LED_STARTED 0 OFF ON (never happens) + * LED_HEAPALLOCATE 0 OFF ON (never happens) + * LED_IRQSENABLED 0 OFF ON (never happens) + * LED_STACKCREATED 1 ON ON (never happens) + * LED_INIRQ 2 OFF NC (momentary) + * LED_SIGNAL 2 OFF NC (momentary) + * LED_ASSERTION 2 OFF NC (momentary) + * LED_PANIC 0 OFF ON (1Hz flashing) + */ + + switch (led) + { + case 2: + /* If the "no-change" state is OFF, then turn the LED off */ + + if (g_ncoff) + { + PORTD &= ~(1 << 7); + break; + } + + /* Otherwise, fall through to turn the LED ON */ + + case 0: + case 1: + /* Turn the LED on */ + + PORTD |= (1 << 7); + break; + + default: + return; + } +} + +#endif /* CONFIG_ARCH_LEDS */ |