17e1d43f6d
iC-JX expander has NINT (not interrupt) pin that goes to logical zero if interrupt occurs. This commit adds support for iC-JX options settings that allows to enable the interrupt for defined input pins. The interrupt is handled in HP worker thread to avoid waiting for SPI transfers in interrupt context. Board has to configure interrupt event for GPIO pin connected to NINT. Signed-off-by: Michal Lenc <michallenc@seznam.cz>
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/****************************************************************************
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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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/* Control Word 4 */
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#define ICJX_CTRL_WORD_4_EOI (1 << 7)
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/* Interrupt Status Register A */
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#define ICJX_ISR_A_SCS (1 << 0)
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#define ICJX_ISR_A_ET1 (1 << 1)
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#define ICJX_ISR_A_ET2 (1 << 2)
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#define ICJX_ISR_A_ISCI (1 << 4)
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#define ICJX_ISR_A_IET1 (1 << 5)
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#define ICJX_ISR_A_IET2 (1 << 6)
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#define ICJX_ISR_A_DCHI (1 << 7)
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/* Interrupt Status Register B */
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#define ICJX_ISR_B_USA (1 << 0)
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#define ICJX_ISR_B_USD (1 << 1)
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#define ICJX_ISR_B_EOC (1 << 2)
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#define ICJX_ISR_B_IUSA (1 << 4)
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#define ICJX_ISR_B_IUSD (1 << 5)
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#define ICJX_ISR_B_ISD (1 << 6)
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#define ICJX_ISR_B_IOEC (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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