258 lines
9.4 KiB
C
258 lines
9.4 KiB
C
/****************************************************************************
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* boards/arm/lpc17xx_40xx/lpc4088-quickstart/src/lpc17_40_autoleds.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "arm_arch.h"
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#include "arm_internal.h"
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#include "lpc17_40_gpio.h"
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#include "lpc4088-quickstart.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
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* any way. The following definitions are used to access individual LEDs.
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*
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* These LEDs are driven through a PNP transistor so a low output value will
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* illuminate them.
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*
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* LED1 : Connected to P1[18]
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* LED2 : Connected to P0[13]
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*
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* These LEDs are connected to ground so a high output value will illuminate
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* them.
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*
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* LED3 : Connected to P1[13]
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* LED4 : Connected to P2[19]
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*
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*
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* If CONFIG_ARCH_LEDs is defined, then NuttX will control the four LEDs
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* on the LPC4088 Quickstart Board. The following definitions describe how
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* NuttX controls the LEDs:
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*
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* LED1 LED2 LED3 LED4
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* LED_STARTED 0 OFF OFF OFF OFF
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* LED_HEAPALLOCATE 1 ON OFF OFF OFF
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* LED_IRQSENABLED 2 OFF ON OFF OFF
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* LED_STACKCREATED 3 ON ON OFF OFF
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* LED_INIRQ 4 LED3 glows, on while in interrupt
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* LED_SIGNAL 4 LED3 glows, on while in signal handler
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* LED_ASSERTION 4 LED3 glows, on while in assertion
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* LED_PANIC 4 LED3 Flashes at 2Hz
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* LED_IDLE 5 LED4 glows, ON while sleeping
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*/
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/* The following definitions map the encoded LED setting to GPIO settings */
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#define LPC4088_QUICKSTART_LED1 (1 << 0)
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#define LPC4088_QUICKSTART_LED2 (1 << 1)
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#define LPC4088_QUICKSTART_LED3 (1 << 2)
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#define LPC4088_QUICKSTART_LED4 (1 << 3)
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#define ON_SETBITS_SHIFT (0)
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#define ON_CLRBITS_SHIFT (4)
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#define OFF_SETBITS_SHIFT (8)
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#define OFF_CLRBITS_SHIFT (12)
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#define ON_BITS(v) ((v) & 0xff)
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#define OFF_BITS(v) (((v) >> 8) & 0x0ff)
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#define SETBITS(b) ((b) & 0x0f)
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#define CLRBITS(b) (((b) >> 4) & 0x0f)
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#define ON_SETBITS(v) (SETBITS(ON_BITS(v))
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#define ON_CLRBITS(v) (CLRBITS(ON_BITS(v))
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#define OFF_SETBITS(v) (SETBITS(OFF_BITS(v))
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#define OFF_CLRBITS(v) (CLRBITS(OFF_BITS(v))
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#define LED_STARTED_ON_SETBITS ((0) << ON_SETBITS_SHIFT)
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#define LED_STARTED_ON_CLRBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED2|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << ON_CLRBITS_SHIFT)
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#define LED_STARTED_OFF_SETBITS (0 << OFF_SETBITS_SHIFT)
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#define LED_STARTED_OFF_CLRBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED2|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << OFF_CLRBITS_SHIFT)
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#define LED_HEAPALLOCATE_ON_SETBITS ((LPC4088_QUICKSTART_LED1) << ON_SETBITS_SHIFT)
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#define LED_HEAPALLOCATE_ON_CLRBITS ((LPC4088_QUICKSTART_LED2|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << ON_CLRBITS_SHIFT)
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#define LED_HEAPALLOCATE_OFF_SETBITS (0 << OFF_SETBITS_SHIFT)
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#define LED_HEAPALLOCATE_OFF_CLRBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED2|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << OFF_CLRBITS_SHIFT)
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#define LED_IRQSENABLED_ON_SETBITS ((LPC4088_QUICKSTART_LED2) << ON_SETBITS_SHIFT)
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#define LED_IRQSENABLED_ON_CLRBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << ON_CLRBITS_SHIFT)
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#define LED_IRQSENABLED_OFF_SETBITS ((LPC4088_QUICKSTART_LED1) << OFF_SETBITS_SHIFT)
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#define LED_IRQSENABLED_OFF_CLRBITS ((LPC4088_QUICKSTART_LED2|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << OFF_CLRBITS_SHIFT)
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#define LED_STACKCREATED_ON_SETBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED2) << ON_SETBITS_SHIFT)
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#define LED_STACKCREATED_ON_CLRBITS ((LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << ON_CLRBITS_SHIFT)
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#define LED_STACKCREATED_OFF_SETBITS ((LPC4088_QUICKSTART_LED2) << OFF_SETBITS_SHIFT)
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#define LED_STACKCREATED_OFF_CLRBITS ((LPC4088_QUICKSTART_LED1|LPC4088_QUICKSTART_LED3|LPC4088_QUICKSTART_LED4) << OFF_CLRBITS_SHIFT)
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#define LED_EVENT_ON_SETBITS ((LPC4088_QUICKSTART_LED3) << ON_SETBITS_SHIFT)
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#define LED_EVENT_ON_CLRBITS ((0) << ON_CLRBITS_SHIFT)
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#define LED_EVENT_OFF_SETBITS ((0) << OFF_SETBITS_SHIFT)
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#define LED_EVENT_OFF_CLRBITS ((LPC4088_QUICKSTART_LED3) << OFF_CLRBITS_SHIFT)
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#define LED_IDLE_ON_SETBITS ((0) << ON_SETBITS_SHIFT)
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#define LED_IDLE_ON_CLRBITS ((LPC4088_QUICKSTART_LED4) << ON_CLRBITS_SHIFT)
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#define LED_IDLE_OFF_SETBITS ((LPC4088_QUICKSTART_LED4) << OFF_SETBITS_SHIFT)
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#define LED_IDLE_OFF_CLRBITS ((0) << OFF_CLRBITS_SHIFT)
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/* Dump GPIO registers */
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#ifdef CONFIG_DEBUG_LEDS_INFO
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# define led_dumpgpio(m) lpc17_40_dumpgpio(???, m)
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#else
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# define led_dumpgpio(m)
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const uint16_t g_ledbits[8] =
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{
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(LED_STARTED_ON_SETBITS | LED_STARTED_ON_CLRBITS |
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LED_STARTED_OFF_SETBITS | LED_STARTED_OFF_CLRBITS),
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(LED_HEAPALLOCATE_ON_SETBITS | LED_HEAPALLOCATE_ON_CLRBITS |
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LED_HEAPALLOCATE_OFF_SETBITS | LED_HEAPALLOCATE_OFF_CLRBITS),
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(LED_IRQSENABLED_ON_SETBITS | LED_IRQSENABLED_ON_CLRBITS |
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LED_IRQSENABLED_OFF_SETBITS | LED_IRQSENABLED_OFF_CLRBITS),
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(LED_STACKCREATED_ON_SETBITS | LED_STACKCREATED_ON_CLRBITS |
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LED_STACKCREATED_OFF_SETBITS | LED_STACKCREATED_OFF_CLRBITS),
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(LED_EVENT_ON_SETBITS | LED_EVENT_ON_CLRBITS |
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LED_EVENT_OFF_SETBITS | LED_EVENT_OFF_CLRBITS),
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(LED_IDLE_ON_SETBITS | LED_IDLE_ON_CLRBITS |
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LED_IDLE_OFF_SETBITS | LED_IDLE_OFF_CLRBITS)
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static inline void led_clrbits(unsigned int clrbits)
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{
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if ((clrbits & LPC4088_QUICKSTART_LED1) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED1, true);
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}
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if ((clrbits & LPC4088_QUICKSTART_LED2) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED2, true);
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}
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if ((clrbits & LPC4088_QUICKSTART_LED3) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED3, false);
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}
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if ((clrbits & LPC4088_QUICKSTART_LED4) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED4, false);
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}
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}
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static inline void led_setbits(unsigned int setbits)
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{
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if ((setbits & LPC4088_QUICKSTART_LED1) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED1, false);
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}
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if ((setbits & LPC4088_QUICKSTART_LED2) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED2, false);
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}
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if ((setbits & LPC4088_QUICKSTART_LED3) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED3, true);
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}
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if ((setbits & LPC4088_QUICKSTART_LED4) != 0)
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{
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lpc17_40_gpiowrite(GPIO_LED4, true);
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}
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}
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static void led_setonoff(unsigned int bits)
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{
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led_clrbits(CLRBITS(bits));
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led_setbits(SETBITS(bits));
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_autoled_initialize
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****************************************************************************/
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void board_autoled_initialize(void)
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{
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/* Configure LED1-4 GPIOs for output */
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lpc17_40_configgpio(GPIO_LED1);
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lpc17_40_configgpio(GPIO_LED2);
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lpc17_40_configgpio(GPIO_LED3);
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lpc17_40_configgpio(GPIO_LED4);
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}
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/****************************************************************************
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* Name: board_autoled_on
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****************************************************************************/
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void board_autoled_on(int led)
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{
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led_setonoff(ON_BITS(g_ledbits[led]));
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}
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/****************************************************************************
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* Name: board_autoled_off
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****************************************************************************/
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void board_autoled_off(int led)
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{
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led_setonoff(OFF_BITS(g_ledbits[led]));
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}
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