205 lines
6.3 KiB
C
205 lines
6.3 KiB
C
/****************************************************************************
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* boards/arm/str71x/olimex-strp711/src/str71_leds.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 <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_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* There are two LEDs are connected to P1.8 & 9 */
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#if defined(CONFIG_ARCH_LEDS) && !defined(CONFIG_STR71X_GPIO1)
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# error "LEDs require GPIO1"
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#endif
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#define STR71X_LED1GPIO1_BIT (0x0100)
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#define STR71X_LED2GPIO1_BIT (0x0200)
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#define STR71X_LEDGPIO1_BITS (STR71X_LED1GPIO1_BIT|STR71X_LED2GPIO1_BIT)
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static uint16_t g_led2set;
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static uint16_t g_led2clr;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: str71_setleds
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****************************************************************************/
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static void str71_setleds(uint16_t setbits, uint16_t clearbits)
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{
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uint16_t reg16;
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/* Save the state of LED2 for later */
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g_led2set = setbits & STR71X_LED2GPIO1_BIT;
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g_led2clr = clearbits & STR71X_LED2GPIO1_BIT;
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/* Set and clear bits as directed */
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reg16 = getreg16(STR71X_GPIO1_PD);
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reg16 &= ~clearbits;
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reg16 |= setbits;
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putreg16(reg16, STR71X_GPIO1_PD);
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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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#ifdef CONFIG_ARCH_LEDS
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void board_autoled_initialize(void)
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{
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uint16_t reg16;
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/* Set normal function output */
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reg16 = getreg16(STR71X_GPIO1_PC0);
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reg16 |= STR71X_LEDGPIO1_BITS;
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putreg16(reg16, STR71X_GPIO1_PC0);
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reg16 = getreg16(STR71X_GPIO1_PC1);
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reg16 &= ~STR71X_LEDGPIO1_BITS;
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putreg16(reg16, STR71X_GPIO1_PC1);
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reg16 = getreg16(STR71X_GPIO1_PC2);
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reg16 |= STR71X_LEDGPIO1_BITS;
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putreg16(reg16, STR71X_GPIO1_PC2);
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/* Clear the LEDs (1 clears; 0 sets) */
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reg16 = getreg16(STR71X_GPIO1_PD);
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reg16 |= STR71X_LEDGPIO1_BITS;
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putreg16(reg16, STR71X_GPIO1_PD);
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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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/* The Olimex board has only two LEDs, so following states are faked as
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* follows
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*
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* SET CLEAR
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* LED_STARTED (none) (n/a)
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* LED_HEAPALLOCATE LED1 (n/a)
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* LED_IRQSENABLED LED1 (n/a)
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* LED_STACKCREATED LED1 (n/a)
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* LED_INIRQ LED1+LED2 LED1
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* LED_SIGNAL LED1+LED2 LED1
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* LED_ASSERTION LED1+LED2 LED1
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* LED_PANIC LED1+LED2* LED1
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*
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* *The previous state of LED2 will be retained
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*/
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switch (led)
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{
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default:
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case LED_STARTED:
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str71_setleds(0, STR71X_LED1GPIO1_BIT | STR71X_LED2GPIO1_BIT); /* Clear LED1&2 */
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break;
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case LED_HEAPALLOCATE:
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case LED_IRQSENABLED:
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case LED_STACKCREATED:
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str71_setleds(STR71X_LED1GPIO1_BIT, STR71X_LED2GPIO1_BIT); /* Set LED1, clear LED2 */
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break;
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case LED_INIRQ:
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case LED_SIGNAL:
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case LED_ASSERTION:
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str71_setleds(STR71X_LED1GPIO1_BIT | STR71X_LED2GPIO1_BIT, 0); /* Set LED1&2 */
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break;
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case LED_PANIC:
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str71_setleds(STR71X_LED2GPIO1_BIT | g_led2set, g_led2set); /* Set LED1, preserve LED2 */
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break;
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}
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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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/* The Olimex board has only two LEDs, so following states are faked as
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* follows
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*
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* SET CLEAR
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* LED_STARTED (none) (n/a)
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* LED_HEAPALLOCATE LED1 (n/a)
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* LED_IRQSENABLED LED1 (n/a)
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* LED_STACKCREATED LED1 (n/a)
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* LED_INIRQ LED1+LED2 LED1
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* LED_SIGNAL LED1+LED2 LED1
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* LED_ASSERTION LED1+LED2 LED1
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* LED_PANIC LED1+LED2* LED1
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*
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* *The previous state of LED2 will be retained
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*/
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switch (led)
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{
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default:
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case LED_STARTED:
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case LED_HEAPALLOCATE:
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case LED_IRQSENABLED:
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case LED_STACKCREATED:
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break;
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case LED_INIRQ:
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case LED_SIGNAL:
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case LED_ASSERTION:
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str71_setleds(STR71X_LED1GPIO1_BIT, STR71X_LED2GPIO1_BIT); /* Set LED1, clear LED2 */
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break;
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case LED_PANIC:
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str71_setleds(g_led2set, STR71X_LED1GPIO1_BIT | g_led2clr); /* Clear LED1, preserve LED2 */
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break;
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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