This patch fix mcp23x08 support. Issue #15592
This commit is contained in:
paolo
Xiang Xiao
parent
bb85ad849e
commit
11e3b8167c
2 changed files with 113 additions and 3 deletions
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@ -749,7 +749,7 @@ static FAR void *mcp23x08_attach(FAR struct ioexpander_dev_s *dev,
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{
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FAR struct mcp23x08_dev_s *priv = (FAR struct mcp23x08_dev_s *)dev;
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FAR void *handle = NULL;
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uint8_t addr = MCP23X08_GPINTENA;
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uint8_t addr = MCP23X08_GPINTEN;
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uint8_t buf[2];
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int i;
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int ret;
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@ -849,7 +849,7 @@ static int mcp23x08_detach(FAR struct ioexpander_dev_s *dev,
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static void mcp23x08_irqworker(void *arg)
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{
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FAR struct mcp23x08_dev_s *priv = (FAR struct mcp23x08_dev_s *)arg;
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uint8_t addr = MCP23X08_INTFA;
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uint8_t addr = MCP23X08_INTF;
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uint8_t buf[2];
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ioe_pinset_t pinset;
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int ret;
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@ -959,7 +959,7 @@ static int mcp23x08_interrupt(int irq, FAR void *context, FAR void *arg)
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FAR struct ioexpander_dev_s *mcp23x08_initialize(
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FAR struct i2c_master_s *i2cdev,
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FAR struct mcp23x08_config_s *config)
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FAR const struct mcp23x08_config_s *config)
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{
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FAR struct mcp23x08_dev_s *priv;
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#ifdef CONFIG_MCP23X08_INT_MIRROR
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110
include/nuttx/ioexpander/mcp23x08.h
Normal file
110
include/nuttx/ioexpander/mcp23x08.h
Normal file
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@ -0,0 +1,110 @@
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/****************************************************************************
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* include/nuttx/ioexpander/mcp23x08.h
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*
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* SPDX-License-Identifier: Apache-2.0
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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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#ifndef __INCLUDE_NUTTX_IOEXPANDER_MCP23X08_H
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#define __INCLUDE_NUTTX_IOEXPANDER_MCP23X08_H
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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 <nuttx/i2c/i2c_master.h>
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#include <stdbool.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* A reference to a structure of this type must be passed to the mcp23x08
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* driver when the driver is instantiated. This structure provides
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* information about the configuration of the mcp23x08 and provides some
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* board-specific hooks.
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*
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* Memory for this structure is provided by the caller. It is not copied by
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* the driver and is presumed to persist while the driver is active. The
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* memory must be writeable because, under certain circumstances, the driver
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* may modify the frequency.
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*/
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struct mcp23x08_config_s
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{
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/* Device characterization */
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uint8_t address; /* 7-bit I2C address (only bits 0-6 used) */
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uint32_t frequency; /* I2C or SPI frequency */
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/* Sets the state of the MCP23X08's nReset pin */
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CODE void (*set_nreset_pin)(bool state);
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#ifdef CONFIG_IOEXPANDER_INT_ENABLE
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/* If multiple mcp23x08 devices are supported, then an IRQ number must
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* be provided for each so that their interrupts can be distinguished.
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*/
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/* IRQ/GPIO access callbacks. These operations all hidden behind
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* callbacks to isolate the mcp23x08 driver from differences in GPIO
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* interrupt handling by varying boards and MCUs.
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*
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* attach - Attach the mcp23x08 interrupt handler to the GPIO interrupt
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* enable - Enable or disable the GPIO interrupt
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*/
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CODE int (*attach)(FAR struct mcp23x08_config_s *state, xcpt_t isr,
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FAR void *arg);
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CODE void (*enable)(FAR struct mcp23x08_config_s *state, bool enable);
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#endif
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: mcp23x08_initialize
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*
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* Description:
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* Initialize a MCP23X08 I2C device.
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*
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* TODO: Add support for more than one device.
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*
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****************************************************************************/
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FAR struct ioexpander_dev_s *mcp23x08_initialize(
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FAR struct i2c_master_s *i2cdev,
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FAR const struct mcp23x08_config_s *config);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_NUTTX_IOEXPANDER_MCP23X08_H */
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