mirror of
https://github.com/apache/nuttx.git
synced 2026-06-05 07:12:54 +08:00
boards/arm/imxrt/teensy-4.x: added board level support for GPIO driver
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
This commit is contained in:
Michal Lenc
Xiang Xiao
@@ -54,6 +54,10 @@ ifeq ($(CONFIG_IMXRT_ENET),y)
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CSRCS += imxrt_ethernet.c
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endif
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ifeq ($(CONFIG_DEV_GPIO),y)
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CSRCS += imxrt_gpio.c
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endif
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ifeq ($(CONFIG_IMXRT_ADC),y)
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CSRCS += imxrt_adc.c
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endif
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@@ -192,6 +192,16 @@ int imxrt_bringup(void)
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}
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#endif
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#ifdef CONFIG_DEV_GPIO
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/* Initialize GPIO driver */
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ret = imxrt_gpio_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: imxrt_gpio_initialize() failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_IMXRT_ENC
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/* Initialize ENC and register the ENC driver. */
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@@ -0,0 +1,214 @@
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/****************************************************************************
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* boards/arm/imxrt/teensy-4.x/src/imxrt_gpio.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 <stdbool.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/clock.h>
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#include <nuttx/wdog.h>
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#include <nuttx/ioexpander/gpio.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "imxrt_gpio.h"
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#include "teensy-4.h"
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#if defined(CONFIG_DEV_GPIO) && !defined(CONFIG_GPIO_LOWER_HALF)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct imxrtgpio_dev_s
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{
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struct gpio_dev_s gpio;
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uint8_t id;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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#if BOARD_NGPIOIN > 0
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static int gpin_read(FAR struct gpio_dev_s *dev, FAR bool *value);
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#endif
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#if BOARD_NGPIOOUT > 0
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static int gpout_read(FAR struct gpio_dev_s *dev, FAR bool *value);
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static int gpout_write(FAR struct gpio_dev_s *dev, bool value);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#if BOARD_NGPIOIN > 0
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static const struct gpio_operations_s gpin_ops =
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{
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.go_read = gpin_read,
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.go_write = NULL,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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#endif
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#if BOARD_NGPIOOUT > 0
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static const struct gpio_operations_s gpout_ops =
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{
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.go_read = gpout_read,
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.go_write = gpout_write,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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#endif
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#if BOARD_NGPIOIN > 0
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/* This array maps the GPIO pins used as INPUT */
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static const uint32_t g_gpioinputs[BOARD_NGPIOIN] =
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{
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GPIO_IN1,
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};
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static struct imxrtgpio_dev_s g_gpin[BOARD_NGPIOIN];
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#endif
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#if BOARD_NGPIOOUT
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/* This array maps the GPIO pins used as OUTPUT */
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static const uint32_t g_gpiooutputs[BOARD_NGPIOOUT] =
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{
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GPIO_OUT1,
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};
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static struct imxrtgpio_dev_s g_gpout[BOARD_NGPIOOUT];
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#if BOARD_NGPIOIN > 0
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static int gpin_read(FAR struct gpio_dev_s *dev, FAR bool *value)
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{
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FAR struct imxrtgpio_dev_s *imxrtgpio =
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(FAR struct imxrtgpio_dev_s *)dev;
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DEBUGASSERT(imxrtgpio != NULL && value != NULL);
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DEBUGASSERT(imxrtgpio->id < BOARD_NGPIOIN);
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gpioinfo("Reading...\n");
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*value = imxrt_gpio_read(g_gpioinputs[imxrtgpio->id]);
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return OK;
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}
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#endif
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#if BOARD_NGPIOOUT > 0
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static int gpout_read(FAR struct gpio_dev_s *dev, FAR bool *value)
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{
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FAR struct imxrtgpio_dev_s *imxrtgpio =
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(FAR struct imxrtgpio_dev_s *)dev;
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DEBUGASSERT(imxrtgpio != NULL && value != NULL);
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DEBUGASSERT(imxrtgpio->id < BOARD_NGPIOOUT);
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gpioinfo("Reading...\n");
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*value = imxrt_gpio_read(g_gpiooutputs[imxrtgpio->id]);
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return OK;
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}
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static int gpout_write(FAR struct gpio_dev_s *dev, bool value)
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{
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FAR struct imxrtgpio_dev_s *imxrtgpio =
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(FAR struct imxrtgpio_dev_s *)dev;
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DEBUGASSERT(imxrtgpio != NULL);
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DEBUGASSERT(imxrtgpio->id < BOARD_NGPIOOUT);
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gpioinfo("Writing %d\n", (int)value);
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imxrt_gpio_write(g_gpiooutputs[imxrtgpio->id], value);
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return OK;
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: imxrt_gpio_initialize
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*
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* Description:
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* Initialize GPIO drivers for use with /apps/examples/gpio
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*
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****************************************************************************/
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int imxrt_gpio_initialize(void)
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{
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int i;
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int pincount = 0;
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#if BOARD_NGPIOIN > 0
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for (i = 0; i < BOARD_NGPIOIN; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpin[i].gpio.gp_pintype = GPIO_INPUT_PIN;
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g_gpin[i].gpio.gp_ops = &gpin_ops;
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g_gpin[i].id = i;
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gpio_pin_register(&g_gpin[i].gpio, pincount);
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/* Configure the pin that will be used as input */
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imxrt_config_gpio(g_gpioinputs[i]);
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pincount++;
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}
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#endif
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#if BOARD_NGPIOOUT > 0
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for (i = 0; i < BOARD_NGPIOOUT; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpout[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
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g_gpout[i].gpio.gp_ops = &gpout_ops;
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g_gpout[i].id = i;
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gpio_pin_register(&g_gpout[i].gpio, pincount);
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/* Configure the pin that will be used as output */
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imxrt_gpio_write(g_gpiooutputs[i], 0);
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imxrt_config_gpio(g_gpiooutputs[i]);
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pincount++;
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}
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#endif
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return 0;
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}
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#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */
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@@ -118,6 +118,15 @@
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#define GPIO_ENC1_PHASE_B (GPIO_XBAR1_INOUT08_1|IOMUX_ENC_DEFAULT|PADMUX_MUXMODE_ALT3) /* EMC_06 */
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#define GPIO_ENC1_INDEX (GPIO_XBAR1_INOUT10_1|IOMUX_ENC_DEFAULT|PADMUX_MUXMODE_ALT1) /* B0_12 */
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/* GPIO pins used by the GPIO subsystem */
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#define BOARD_NGPIOIN 1 /* Amount of GPIO input pins */
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#define BOARD_NGPIOOUT 1 /* Amount of GPIO output pins */
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#define GPIO_IN1 (GPIO_INPUT | GPIO_PORT4 | GPIO_PIN4) /* EMC_04 */
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#define GPIO_OUT1 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | IOMUX_GOUT_DEFAULT | \
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GPIO_PORT4 | GPIO_PIN5) /* EMC_05 */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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@@ -186,6 +195,21 @@ int imxrt_pwm_setup(void);
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int imxrt_adc_initialize(void);
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#endif
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/****************************************************************************
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* Name: imxrt_gpio_initialize
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*
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* Description:
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* Initialize GPIO drivers for use with /apps/examples/gpio
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*
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* Return Value:
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* OK on success; a negated errno value on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_DEV_GPIO
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int imxrt_gpio_initialize(void);
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#endif
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/****************************************************************************
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* Name: imxrt_enc_initialize
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*
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