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https://github.com/apache/nuttx.git
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ioexpander: add support for iC-JX expander
This commit adds basic support for iC-JX expander in SPI mode. The expander is functional and supports both input and output pins. Further expander functionalities (filtering, adc, interrupt support) are not yet implemented. Signed-off-by: Michal Lenc <michallenc@seznam.cz>
This commit is contained in:
Michal Lenc
committed by
Alan Carvalho de Assis
Alan Carvalho de Assis
parent
f8b0b06b97
commit
22110b3b83
@@ -56,6 +56,24 @@ config IOEXPANDER_DUMMY_INT_POLLDELAY
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endif # IOEXPANDER_DUMMY
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config IOEXPANDER_ICJX
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bool "iC-JX SPI IO expander"
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default n
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depends on SPI
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---help---
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Enable support for the iC-JX expander from iC-Haus GmbH manufacturer.
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SPI peripheral is used for the communication.
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if IOEXPANDER_ICJX
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config iC-JX_MULTIPLE
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bool "Multiple iC-JX Devices"
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default n
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---help---
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Can be defined to support multiple iC-JX devices on board.
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endif # IOEXPANDER_ICJX
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config IOEXPANDER_ISO1H812G
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bool "ISO1H812G SPI IO expander"
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default n
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@@ -32,6 +32,10 @@ ifeq ($(CONFIG_IOEXPANDER_DUMMY),y)
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CSRCS += ioe_dummy.c
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endif
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ifeq ($(CONFIG_IOEXPANDER_ICJX),y)
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CSRCS += icjx.c
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endif
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ifeq ($(CONFIG_IOEXPANDER_ISO1H812G),y)
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CSRCS += iso1h812g.c
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endif
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,102 @@
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/****************************************************************************
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* drivers/ioexpander/icjx.h
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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 __DRIVERS_IOEXPANDER_ICJX_H
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#define __DRIVERS_IOEXPANDER_ICJX_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/mutex.h>
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#if defined(CONFIG_IOEXPANDER) && defined(CONFIG_IOEXPANDER_ICJX)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Prerequisites:
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* CONFIG_SPI
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* SPI support is required
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* CONFIG_IOEXPANDER
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* Enables I/O expander support
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*
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* CONFIG_IOEXPANDER_ICJX
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* Enables support for the ICJX driver (Needs CONFIG_INPUT)
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* CONFIG_ICJX_MULTIPLE
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* Can be defined to support multiple ICJX devices on board.
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*/
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#ifndef CONFIG_SPI
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# error "CONFIG_SPI is required by ICJX"
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#endif
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/* iC-JX Registers **********************************************************/
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#define ICJX_INPUT_A 0x00
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#define ICJX_INPUT_B 0x01
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#define ICJX_CHNG_MSG_A 0x02
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#define ICJX_CNNG_MSG_B 0x03
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#define ICJX_INT_STATUS_A 0x04
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#define ICJX_INT_STATUS_B 0x05
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#define ICJX_OVERCURR_MSG_A 0x06
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#define ICJX_OVERCURR_MSG_B 0x07
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#define ICJX_OVERCURR_STATUS_A 0x08
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#define ICJX_OVERCURR_STATUS_B 0x09
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#define ICJX_ADC_DATA_1 0x0A
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#define ICJX_ADC_DATA_2 0x0B
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#define ICJX_OUTPUT_A 0x0C
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#define ICJX_OUTPUT_B 0x0D
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#define ICJX_FLASH_PULSE_A 0x0E
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#define ICJX_FLASH_PULSE_B 0x0F
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#define ICJX_CHNG_INT_EN_A 0x10
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#define ICJX_CHNG_INT_EN_B 0x11
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#define ICJX_OVERCURR_INT_EN_A 0x12
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#define ICJX_OVERCURR_INT_EN_B 0x13
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#define ICJX_CTRL_WORD_1_A 0x14
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#define ICJX_CTRL_WORD_1_B 0x15
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#define ICJX_CTRL_WORD_2_A 0x16
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#define ICJX_CTRL_WORD_2_B 0x17
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#define ICJX_CTRL_WORD_3_A 0x18
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#define ICJX_CTRL_WORD_3_B 0x19
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#define ICJX_CTRL_WORD_4 0x1A
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#define ICJX_CTRL_WORD_5 0x1B
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#define ICJX_CTRL_WORD_6 0x1C
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#define ICJX_DEV_ID 0x1D
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#define ICJX_TEST_1 0x1E
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#define ICJX_TEST_2 0x1F
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/* Control Word 1 */
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#define ICJX_CTRL_WORD_1_BYP0 (1 << 3)
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#define ICJX_CTRL_WORD_1_BYP1 (1 << 7)
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/* Control Word 2 */
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#define ICJX_CTRL_WORD_2_NIOL (1 << 3)
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#define ICJX_CTRL_WORD_2_NIOH (1 << 7)
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#endif /* CONFIG_IOEXPANDER && CONFIG_IOEXPANDER_ICJX */
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#endif /* __DRIVERS_IOEXPANDER_ICJX_H */
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@@ -0,0 +1,96 @@
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/****************************************************************************
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* include/nuttx/ioexpander/icjx.h
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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_ICJX_H
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#define __INCLUDE_NUTTX_IOEXPANDER_ICJX_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 <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ICJX_CTRL_WORD_CURR_SRC_DIS 0 /* Pin current source disabled */
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#define ICJX_CTRL_WORD_PULLDOWN_200U 1 /* 200 uA pull down */
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#define ICJX_CTRL_WORD_PULLDOWN_600U 2 /* 600 uA pull down */
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#define ICJX_CTRL_WORD_PULLDOWN_2M 3 /* 2 mA pull down */
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#define ICJX_CTRL_WORD_PULLUP_200U 5 /* 200 uA pull up */
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#define ICJX_CTRL_WORD_PULLUP_600U 6 /* 600 uA pull up */
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#define ICJX_CTRL_WORD_PULLUP_2M 7 /* 2 mA pull up*/
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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 iC-JX
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* driver when the driver is instantiated. This structure provides
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* information about the configuration of the iC-JX 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 icjx_config_s
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{
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/* Device characterization */
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uint8_t id; /* Device ID (if more expanders are used) */
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uint8_t verification; /* True if data verification on MISO line is used */
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uint8_t current_src; /* Current sources for pin nibbles (pull up,
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* pull down) - see Control Word 2 register
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*/
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uint8_t addr; /* Device address (set by A(1:0) pins) */
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uint8_t mode; /* SPI mode */
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uint32_t frequency; /* SPI frequency */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: icjx_initialize
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*
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* Description:
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* Instantiate and configure the iC-JX device driver to use the
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* provided SPI device instance.
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*
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* Input Parameters:
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* spi - A SPI driver instance
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* config - Persistent board configuration data
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*
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* Returned Value:
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* an ioexpander_dev_s instance on success, NULL on failure.
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*
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****************************************************************************/
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struct spi_dev_s;
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FAR struct ioexpander_dev_s *icjx_initialize(FAR struct spi_dev_s *spi,
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FAR struct icjx_config_s *config);
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#endif /* __INCLUDE_NUTTX_IOEXPANDER_ICJX_H */
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