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walnux/include/nuttx/analog/ltc1867l.h
Alin Jerpelea a43ff0c93a NuttX: DS Automotion GmbH: update licenses to Apache 
DS Automotion GmbH has submitted the SGA and we can migrate the licenses
 to Apache.

Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-04-01 12:13:12 -05:00

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/****************************************************************************
* include/nuttx/analog/ltc1867l.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_ANALOG_LTC1867L_H
#define __INCLUDE_NUTTX_ANALOG_LTC1867L_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/spi/spi.h>
#include <stdint.h>
#if defined(CONFIG_ADC_LTC1867L)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* LTC1867L Configuration ***************************************************/
#define LTC1867L_CONFIG_BIT_SLP (1 << 1)
#define LTC1867L_CONFIG_BIT_UNI (1 << 2)
#define LTC1867L_CONFIG_BIT_COM (1 << 3)
#define LTC1867L_CONFIG_BIT_S0 (1 << 4)
#define LTC1867L_CONFIG_BIT_S1 (1 << 5)
#define LTC1867L_CONFIG_BIT_OS (1 << 6)
#define LTC1867L_CONFIG_BIT_SD (1 << 7)
/****************************************************************************
* Public Types
****************************************************************************/
enum ltc1867l_analog_multiplexer_config_e
{
LTC1867L_P_CH0_M_CH1 = 0,
LTC1867L_P_CH2_M_CH3 = LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH4_M_CH5 = LTC1867L_CONFIG_BIT_S1,
LTC1867L_P_CH6_M_CH7 = LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH1_M_CH0 = LTC1867L_CONFIG_BIT_OS,
LTC1867L_P_CH3_M_CH2 = LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH5_M_CH4 = LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S1,
LTC1867L_P_CH7_M_CH6 = LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH0_M_GND = LTC1867L_CONFIG_BIT_SD,
LTC1867L_P_CH2_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH4_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S1,
LTC1867L_P_CH6_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH1_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS,
LTC1867L_P_CH3_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH5_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S1,
LTC1867L_P_CH7_M_GND = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_S0,
LTC1867L_P_CH0_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH2_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S0 |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH4_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH6_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_S0 |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH1_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH3_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S0 |
LTC1867L_CONFIG_BIT_COM,
LTC1867L_P_CH5_M_CH7COM = LTC1867L_CONFIG_BIT_SD |
LTC1867L_CONFIG_BIT_OS |
LTC1867L_CONFIG_BIT_S1 |
LTC1867L_CONFIG_BIT_COM
};
enum ltc1867l_analog_input_mode_e
{
LTC1867L_UNIPOLAR = LTC1867L_CONFIG_BIT_UNI,
LTC1867L_BIPOLAR = 0,
};
begin_packed_struct struct ltc1867l_channel_config_s
{
uint8_t channel; /* This will be the channel number returned in struct adc_msg_s for a conversion */
enum ltc1867l_analog_multiplexer_config_e analog_multiplexer_config; /* Analog multiplexer configuration */
enum ltc1867l_analog_input_mode_e analog_inputmode; /* Analog input mode */
} end_packed_struct;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: ltc1867l_register
*
* Description:
* Register the LTC1867L character device as 'devpath'
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/adc0"
* spi - An instance of the SPI interface to use to communicate with
* LTC1867L
* devno - SPI device number
* channel_config - A pointer to an array which holds the configuration
* for each sampled channel.
* channel_config_count - Number of channels to sample
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int ltc1867l_register(FAR const char *devpath, FAR struct spi_dev_s *spi,
unsigned int devno,
FAR struct ltc1867l_channel_config_s *channel_config,
int channel_config_count);
#endif /* CONFIG_ADC_LTC1867L */
#endif /* __INCLUDE_NUTTX_ANALOG_LTC1867L_H */
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