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Posted to commits@nuttx.apache.org by xi...@apache.org on 2020/11/15 13:59:09 UTC
[incubator-nuttx] branch master updated: Support for MAX1161X
family of I2C 12 bit ADC chips: MAX11612: 4 channels VCC=5V0 Int
VRef=4.096V MAX11613: 4 channels VCC=3V3 Int VRef=2.048V MAX11614: 8
channels VCC=5V0 Int VRef=4.096V MAX11615: 8 channels VCC=3V3 Int
VRef=2.048V MAX11616: 12 channels VCC=5V0 Int VRef=4.096V MAX11617: 12
channels VCC=3V3 Int VRef=2.048V Note: The chips' auto-scanning feature is
not supported in this revision.
This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
The following commit(s) were added to refs/heads/master by this push:
new bf5fa55 Support for MAX1161X family of I2C 12 bit ADC chips: MAX11612: 4 channels VCC=5V0 Int VRef=4.096V MAX11613: 4 channels VCC=3V3 Int VRef=2.048V MAX11614: 8 channels VCC=5V0 Int VRef=4.096V MAX11615: 8 channels VCC=3V3 Int VRef=2.048V MAX11616: 12 channels VCC=5V0 Int VRef=4.096V MAX11617: 12 channels VCC=3V3 Int VRef=2.048V Note: The chips' auto-scanning feature is not supported in this revision.
bf5fa55 is described below
commit bf5fa5557dadc97e3aed5b14dc83db8787588cee
Author: Frank-Christian Kruegel <fc...@istda.com>
AuthorDate: Fri Nov 6 11:01:03 2020 +0100
Support for MAX1161X family of I2C 12 bit ADC chips:
MAX11612: 4 channels VCC=5V0 Int VRef=4.096V
MAX11613: 4 channels VCC=3V3 Int VRef=2.048V
MAX11614: 8 channels VCC=5V0 Int VRef=4.096V
MAX11615: 8 channels VCC=3V3 Int VRef=2.048V
MAX11616: 12 channels VCC=5V0 Int VRef=4.096V
MAX11617: 12 channels VCC=3V3 Int VRef=2.048V
Note: The chips' auto-scanning feature is not supported in this revision.
---
drivers/analog/Kconfig | 31 +++
drivers/analog/Make.defs | 4 +
drivers/analog/max1161x.c | 596 ++++++++++++++++++++++++++++++++++++++++
include/nuttx/analog/adc.h | 16 ++
include/nuttx/analog/ioctl.h | 10 +-
include/nuttx/analog/max1161x.h | 122 ++++++++
6 files changed, 776 insertions(+), 3 deletions(-)
diff --git a/drivers/analog/Kconfig b/drivers/analog/Kconfig
index 8fe91d7..c33dd53 100644
--- a/drivers/analog/Kconfig
+++ b/drivers/analog/Kconfig
@@ -157,6 +157,37 @@ config ADS7828_FREQUENCY
endif # ADC_ADS7828
+config ADC_MAX1161X
+ bool "Maxim MAX11612-11617 support"
+ default n
+ select I2C
+ ---help---
+ Enable driver support for the MAX1161X 12-Bit I2C powered ADC Family.
+
+ This driver supports reading single or multiple ADC conversion result
+ as well as onfiguring the ADC, via ioctl calls.
+
+if ADC_MAX1161X
+
+config MAX1161X_FREQUENCY
+ int "Maxim MAX1161X I2C frequency"
+ default 100000
+ ---help---
+ MAX1161X supports standard, fast, and high-speed I2C modes.
+
+choice
+ prompt "Maxim MAX1161X Chip Type"
+
+ config MAX1161X_4CHAN
+ bool "MAX11612/MAX11613 4 Channels"
+ config MAX1161X_8CHAN
+ bool "MAX11614/MAX11615 8 Channels"
+ config MAX1161X_12CHAN
+ bool "MAX11616/MAX11617 12 Channels"
+endchoice
+
+endif # ADC_MAX1161X
+
endif # ADC
config COMP
diff --git a/drivers/analog/Make.defs b/drivers/analog/Make.defs
index a47f1c4..c5f4fab 100644
--- a/drivers/analog/Make.defs
+++ b/drivers/analog/Make.defs
@@ -107,6 +107,10 @@ ifeq ($(CONFIG_ADC_ADS7828),y)
CSRCS += ads7828.c
endif
+ifeq ($(CONFIG_ADC_MAX1161X),y)
+ CSRCS += max1161x.c
+endif
+
ifeq ($(CONFIG_ADC_LTC1867L),y)
CSRCS += ltc1867l.c
endif
diff --git a/drivers/analog/max1161x.c b/drivers/analog/max1161x.c
new file mode 100644
index 0000000..1b96c87
--- /dev/null
+++ b/drivers/analog/max1161x.c
@@ -0,0 +1,596 @@
+/****************************************************************************
+ * drivers/analog/max1161x.c
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * This driver is for a whole family of I2C ADC chips:
+ * +--------------+-----+----+--------+---------+
+ * | Type | VCC | In | Pkg | I2C Addr|
+ * +--------------+-----+----+--------+---------+
+ * | MAX11612EUA+ | 5V0 | 4 | 8μMAX | 0110100 |
+ * | MAX11613EUA+ | 3V3 | 4 | 8μMAX | 0110100 |
+ * | MAX11613EWC+ | 3V3 | 4 | 12WLP | 0110100 |
+ * | MAX11614EEE+ | 5V0 | 8 | 16QSOP | 0110011 |
+ * | MAX11615EEE+ | 3V3 | 8 | 16QSOP | 0110011 |
+ * | MAX11615EWE+ | 3V3 | 8 | 16WLP | 0110011 |
+ * | MAX11616EEE+ | 5V0 | 12 | 16QSOP | 0110101 |
+ * | MAX11617EEE+ | 3V3 | 12 | 16QSOP | 0110101 |
+ * | MAX11617EWE+ | 3V3 | 12 | 16WLP | 0110101 |
+ * +--------------+-----+----+--------+---------+
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <semaphore.h>
+#include <errno.h>
+#include <assert.h>
+#include <debug.h>
+#include <endian.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/i2c/i2c_master.h>
+#include <nuttx/analog/adc.h>
+#include <nuttx/analog/ioctl.h>
+#include <nuttx/analog/max1161x.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#if defined(CONFIG_ADC_MAX1161X)
+
+#if defined(CONFIG_MAX1161X_4CHAN)
+#define MAX1161X_NUM_CHANNELS 4
+#define MAX1161X_CHANNELSTROBED 0x000f
+#define MAX1161X_I2C_ADDR 0x34u
+#elif defined(CONFIG_MAX1161X_8CHAN)
+#define MAX1161X_NUM_CHANNELS 8
+#define MAX1161X_CHANNELSTROBED 0x00ff
+#define MAX1161X_I2C_ADDR 0x33u
+#elif defined(CONFIG_MAX1161X_12CHAN)
+#define MAX1161X_NUM_CHANNELS 12
+#define MAX1161X_CHANNELSTROBED 0x0fff
+#define MAX1161X_I2C_ADDR 0x35u
+#else
+#error "MAX1161X Chip Type not defined"
+#endif
+
+#define MAX1161X_SETUP_MARKER (1 << 7)
+#define MAX1161X_SETUP_REF_SHIFT 4
+#define MAX1161X_SETUP_REF_MASK (7 << MAX1161X_SETUP_REF_SHIFT)
+#define MAX1161X_SETUP_CLK (1 << 3)
+#define MAX1161X_SETUP_UNIBIP (1 << 2)
+#define MAX1161X_SETUP_RESET (1 << 1)
+
+#define MAX1161X_CMD_MARKER (0 << 7)
+#define MAX1161X_CMD_SCAN_SHIFT 5
+#define MAX1161X_CMD_SCAN_MASK (3 << MAX1161X_CMD_SCAN_SHIFT)
+#define MAX1161X_CMD_CHANNEL_SHIFT 1
+#define MAX1161X_CMD_CHANNEL_MASK (15 << MAX1161X_CMD_CHANNEL_SHIFT)
+#define MAX1161X_CMD_SNGDIF (1 << 0)
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct max1161x_dev_s
+{
+ FAR struct i2c_master_s *i2c;
+ FAR const struct adc_callback_s *cb;
+ uint8_t addr;
+
+ /* List of channels to read on every convert trigger.
+ * Bit position corresponds to channel. i.e. bit0 = 1 to read channel 0.
+ */
+
+ uint16_t chanstrobed;
+
+ /* Current configuration of the ADC. There are two bytes holding
+ * the complete configuration - the Setup Byte has Bit 7 always set,
+ * while the command byte has bit 7 alway reset
+ */
+
+ uint8_t setupbyte;
+ uint8_t cmdbyte;
+};
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/* max1161x helpers */
+
+static int max1161x_readchannel(FAR struct max1161x_dev_s *priv,
+ FAR struct adc_msg_s *msg);
+
+/* ADC methods */
+
+static int max1161x_bind(FAR struct adc_dev_s *dev,
+ FAR const struct adc_callback_s *callback);
+static void max1161x_reset(FAR struct adc_dev_s *dev);
+static int max1161x_setup(FAR struct adc_dev_s *dev);
+static void max1161x_shutdown(FAR struct adc_dev_s *dev);
+static void max1161x_rxint(FAR struct adc_dev_s *dev, bool enable);
+static int max1161x_ioctl(FAR struct adc_dev_s *dev, int cmd,
+ unsigned long arg);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static const struct adc_ops_s g_adcops =
+{
+ .ao_bind = max1161x_bind, /* ao_bind */
+ .ao_reset = max1161x_reset, /* ao_reset */
+ .ao_setup = max1161x_setup, /* ao_setup */
+ .ao_shutdown = max1161x_shutdown, /* ao_shutdown */
+ .ao_rxint = max1161x_rxint, /* ao_rxint */
+ .ao_ioctl = max1161x_ioctl /* ao_read */
+};
+
+static struct max1161x_dev_s g_adcpriv;
+
+static struct adc_dev_s g_adcdev =
+{
+ .ad_ops = &g_adcops,
+ .ad_priv = &g_adcpriv,
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: max1161x_manage_strobe
+ *
+ * Description:
+ * Controls which channels are read on ANIOC_TRIGGER. By default all
+ * channels are read.
+ *
+ * Returned Value:
+ * 0 on success. Negated errno on failure.
+ *
+ ****************************************************************************/
+
+static int max1161x_manage_strobe(FAR struct max1161x_dev_s *priv,
+ uint8_t channel, bool add_nremove)
+{
+ int ret = OK;
+
+ if (priv == NULL || channel >= MAX1161X_NUM_CHANNELS)
+ {
+ ret = -EINVAL;
+ }
+ else
+ {
+ uint16_t flag = 1U << channel;
+
+ if (add_nremove)
+ {
+ priv->chanstrobed |= flag;
+ }
+ else
+ {
+ priv->chanstrobed &= ~flag;
+ }
+ }
+
+ return ret;
+}
+
+/****************************************************************************
+ * Name: max1161x_readchannel
+ *
+ * Description:
+ * Reads a conversion from the ADC.
+ *
+ * Input Parameters:
+ * msg - msg->am_channel should be set to the channel to be read.
+ * msg->am_data will store the result of the read.
+ *
+ * Returned Value:
+ * 0 on success. Negated errno on failure.
+ *
+ * Assumptions/Limitations:
+ * NOTE: When used in single-ended mode, msg->am_channel will be converted
+ * to the corresponding channel selection bits in the command byte.
+ * In differential mode, msg->am_channel is used as the channel
+ * selection bits. The corresponding "channels" are as follows:
+ *
+ * msg->am_channel Analog Source
+ * 0 +CH0, -CH1
+ * 1 +CH1, -CH0
+ * 2 +CH2, -CH3
+ * 3 +CH3, -CH2
+ * 4 +CH4, -CH5
+ * 5 +CH5, -CH4
+ * 6 +CH6, -CH7
+ * 7 +CH7, -CH6
+ *
+ ****************************************************************************/
+
+static int max1161x_readchannel(FAR struct max1161x_dev_s *priv,
+ FAR struct adc_msg_s *msg)
+{
+ int ret = OK;
+ if (priv == NULL || msg == NULL)
+ {
+ ret = -EINVAL;
+ }
+ else
+ {
+ struct i2c_msg_s i2cmsg[3];
+ uint8_t channel = msg->am_channel & ~(MAX1161X_CMD_CHANNEL_MASK);
+
+ uint8_t setupbyte = priv->setupbyte;
+ uint8_t cmdbyte = priv->cmdbyte & ~(MAX1161X_CMD_CHANNEL_MASK);
+ cmdbyte |= channel << MAX1161X_CMD_CHANNEL_SHIFT;
+
+ i2cmsg[0].frequency = CONFIG_MAX1161X_FREQUENCY;
+ i2cmsg[0].addr = priv->addr;
+ i2cmsg[0].flags = I2C_M_NOSTOP;
+ i2cmsg[0].buffer = &setupbyte;
+ i2cmsg[0].length = sizeof(setupbyte);
+
+ i2cmsg[1].frequency = CONFIG_MAX1161X_FREQUENCY;
+ i2cmsg[1].addr = priv->addr;
+ i2cmsg[1].flags = I2C_M_NOSTOP;
+ i2cmsg[1].buffer = &cmdbyte;
+ i2cmsg[1].length = sizeof(cmdbyte);
+
+ i2cmsg[2].frequency = CONFIG_MAX1161X_FREQUENCY;
+ i2cmsg[2].addr = priv->addr;
+ i2cmsg[2].flags = I2C_M_READ;
+
+ uint16_t buf;
+ i2cmsg[2].buffer = (uint8_t *)(&buf);
+ i2cmsg[2].length = sizeof(buf);
+ ret = I2C_TRANSFER(priv->i2c, i2cmsg, 3);
+ if (ret < 0)
+ {
+ aerr("MAX1161X I2C transfer failed: %d", ret);
+ }
+
+ msg->am_data = be16toh(buf) & 0x0fffu;
+ }
+
+ return ret;
+}
+
+/****************************************************************************
+ * Name: max1161x_bind
+ *
+ * Description:
+ * Bind the upper-half driver callbacks to the lower-half implementation.
+ * This must be called early in order to receive ADC event notifications.
+ *
+ ****************************************************************************/
+
+static int max1161x_bind(FAR struct adc_dev_s *dev,
+ FAR const struct adc_callback_s *callback)
+{
+ FAR struct max1161x_dev_s *priv =
+ (FAR struct max1161x_dev_s *)dev->ad_priv;
+
+ DEBUGASSERT(priv != NULL);
+ priv->cb = callback;
+ return OK;
+}
+
+/****************************************************************************
+ * Name: max1161x_reset
+ *
+ * Description:
+ * Reset the ADC device. Called early to initialize the hardware. This
+ * is called, before ao_setup() and on error conditions.
+ *
+ ****************************************************************************/
+
+static void max1161x_reset(FAR struct adc_dev_s *dev)
+{
+ FAR struct max1161x_dev_s *priv =
+ (FAR struct max1161x_dev_s *)dev->ad_priv;
+
+ priv->setupbyte = MAX1161X_SETUP_MARKER;
+ priv->cmdbyte = MAX1161X_CMD_MARKER;
+ priv->chanstrobed = MAX1161X_CHANNELSTROBED;
+
+#ifndef MAX1161X_ENABLE_SCAN
+ priv->cmdbyte &= ~(MAX1161X_CMD_SCAN_MASK);
+ priv->cmdbyte |= (MAX1161X_SCAN_NONE << MAX1161X_CMD_SCAN_SHIFT);
+#endif
+}
+
+/****************************************************************************
+ * Name: max1161x_setup
+ *
+ * Description:
+ * Configure the ADC. This method is called the first time that the ADC
+ * device is opened. The MAX1161X is quite simple and nothing special is
+ * needed to be done.
+ *
+ ****************************************************************************/
+
+static int max1161x_setup(FAR struct adc_dev_s *dev)
+{
+ return OK;
+}
+
+/****************************************************************************
+ * Name: max1161x_shutdown
+ *
+ * Description:
+ * Disable the ADC. This method is called when the ADC device is closed.
+ * This method should reverse the operation of the setup method, but as
+ * the MAX1161X is quite simple does not need to do anything.
+ *
+ ****************************************************************************/
+
+static void max1161x_shutdown(FAR struct adc_dev_s *dev)
+{
+}
+
+/****************************************************************************
+ * Name: max1161x_rxint
+ *
+ * Description:
+ * Needed for ADC upper-half compatibility but conversion interrupts
+ * are not supported by the MAX1161X.
+ *
+ ****************************************************************************/
+
+static void max1161x_rxint(FAR struct adc_dev_s *dev, bool enable)
+{
+}
+
+/****************************************************************************
+ * Name: max1161x_ioctl
+ *
+ * Description:
+ * All ioctl calls will be routed through this method
+ *
+ ****************************************************************************/
+
+static int max1161x_ioctl(FAR struct adc_dev_s *dev, int cmd,
+ unsigned long arg)
+{
+ FAR struct max1161x_dev_s *priv =
+ (FAR struct max1161x_dev_s *)dev->ad_priv;
+ int ret = OK;
+
+ switch (cmd)
+ {
+ case ANIOC_TRIGGER:
+ {
+ struct adc_msg_s msg;
+ int i;
+
+ for (i = 0; (i < MAX1161X_NUM_CHANNELS) && (ret == OK); i++)
+ {
+ if ((priv->chanstrobed >> i) & 1u)
+ {
+ msg.am_channel = i;
+ ret = max1161x_readchannel(priv, &msg);
+ if (ret == OK)
+ {
+ priv->cb->au_receive(&g_adcdev, i, msg.am_data);
+ }
+ }
+ }
+ }
+ break;
+
+ /* Add a channel to list of channels read on ANIOC_TRIGGER */
+
+ case ANIOC_MAX1161X_ADD_CHAN:
+ {
+ ret = max1161x_manage_strobe(priv, (uint8_t)arg, true);
+ }
+ break;
+
+ /* Remove a channel from list of channels read on ANIOC_TRIGGER */
+
+ case ANIOC_MAX1161X_REMOVE_CHAN:
+ {
+ ret = max1161x_manage_strobe(priv, (uint8_t)arg, false);
+ }
+ break;
+
+ /* Read a single channel from the ADC */
+
+ case ANIOC_MAX1161X_READ_CHANNEL:
+ {
+ FAR struct adc_msg_s *msg = (FAR struct adc_msg_s *)arg;
+ ret = max1161x_readchannel(priv, msg);
+ }
+ break;
+
+ /* Set the ADC reference source and pin function */
+
+ case ANIOC_MAX1161X_SET_REF:
+ {
+ switch (arg)
+ {
+ case MAX1161X_REF_VDD_AIN_NC_OFF:
+ case MAX1161X_REF_EXT_RIN_IN_OFF:
+ case MAX1161X_REF_INT_AIN_NC_OFF:
+ case MAX1161X_REF_INT_AIN_NC_ON:
+ case MAX1161X_REF_INT_ROUT_OUT_OFF:
+ case MAX1161X_REF_INT_ROUT_OUT_ON:
+ {
+ priv->setupbyte &= ~(MAX1161X_SETUP_REF_MASK);
+ priv->setupbyte |= (arg << MAX1161X_SETUP_REF_SHIFT);
+ }
+ break;
+
+ default:
+ {
+ ret = -EINVAL;
+ }
+ break;
+ }
+ }
+ break;
+
+ /* Set clock source */
+
+ case ANIOC_MAX1161X_SET_CLOCK:
+ {
+ if (arg == MAX1161X_CLOCK_EXT)
+ {
+ priv->setupbyte |= MAX1161X_SETUP_CLK;
+ }
+ else if (arg == MAX1161X_CLOCK_INT)
+ {
+ priv->setupbyte &= ~MAX1161X_SETUP_CLK;
+ }
+ else
+ {
+ ret = -EINVAL;
+ }
+ }
+ break;
+
+ /* Set the ADC Unipolar/Bipolar Mode */
+
+ case ANIOC_MAX1161X_SET_UNIBIP:
+ {
+ if (arg == MAX1161X_BIPOLAR)
+ {
+ priv->setupbyte |= MAX1161X_SETUP_UNIBIP;
+ }
+ else if (arg == MAX1161X_UNIPOLAR)
+ {
+ priv->setupbyte &= ~MAX1161X_SETUP_UNIBIP;
+ }
+ else
+ {
+ ret = -EINVAL;
+ }
+ }
+ break;
+
+ /* Set the ADC Scan Mode */
+
+ case ANIOC_MAX1161X_SET_SCAN:
+ {
+#ifdef MAX1161X_ENABLE_SCAN
+ switch (arg)
+ {
+ case MAX1161X_SCAN_FROM_ZERO :
+ case MAX1161X_SCAN_EIGHT_TIMES:
+ case MAX1161X_SCAN_UPPER:
+ case MAX1161X_SCAN_NONE:
+ {
+ priv->cmdbyte &= ~(MAX1161X_CMD_SCAN_MASK);
+ priv->cmdbyte |= (arg << MAX1161X_CMD_SCAN_SHIFT);
+ }
+ break;
+
+ default:
+ {
+ ret = -EINVAL;
+ }
+ break;
+ }
+#endif
+ }
+ break;
+
+ /* Set the ADC Single Ended/Differential Mode */
+
+ case ANIOC_MAX1161X_SET_SNGDIF:
+ {
+ if (arg == MAX1161X_SINGLE_ENDED)
+ {
+ priv->cmdbyte |= MAX1161X_CMD_SNGDIF;
+ }
+ else if (arg == MAX1161X_DIFFERENTIAL)
+ {
+ priv->cmdbyte &= ~MAX1161X_CMD_SNGDIF;
+ }
+ else
+ {
+ ret = -EINVAL;
+ }
+ }
+ break;
+
+ /* Command was not recognized */
+
+ default:
+ ret = -ENOTTY;
+ aerr("MAX1161X ERROR: Unrecognized cmd: %d\n", cmd);
+ break;
+ }
+
+ return ret;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: max1161x_initialize
+ *
+ * Description:
+ * Initialize the selected adc
+ *
+ * Input Parameters:
+ * i2c - Pointer to a I2C master struct for the bus the ADC resides on.
+ *
+ * Returned Value:
+ * Valid ADC device structure reference on success; a NULL on failure
+ *
+ ****************************************************************************/
+
+FAR struct adc_dev_s *max1161x_initialize(FAR struct i2c_master_s *i2c)
+{
+ DEBUGASSERT(i2c != NULL);
+
+ /* Driver state data */
+
+ FAR struct max1161x_dev_s *priv;
+ priv = (FAR struct max1161x_dev_s *)g_adcdev.ad_priv;
+
+ priv->cb = NULL;
+ priv->i2c = i2c;
+ priv->addr = MAX1161X_I2C_ADDR;
+ priv->setupbyte = MAX1161X_SETUP_MARKER;
+ priv->cmdbyte = MAX1161X_CMD_MARKER;
+ priv->chanstrobed = MAX1161X_CHANNELSTROBED;
+
+#ifndef MAX1161X_ENABLE_SCAN
+ priv->cmdbyte &= ~(MAX1161X_CMD_SCAN_MASK);
+ priv->cmdbyte |= (MAX1161X_SCAN_NONE << MAX1161X_CMD_SCAN_SHIFT);
+#endif
+
+ return &g_adcdev;
+}
+
+#endif
diff --git a/include/nuttx/analog/adc.h b/include/nuttx/analog/adc.h
index 3e3323a..0fb99c1 100644
--- a/include/nuttx/analog/adc.h
+++ b/include/nuttx/analog/adc.h
@@ -298,6 +298,22 @@ FAR struct adc_dev_s *lmp92001_adc_initialize(FAR struct i2c_master_s *i2c,
FAR struct adc_dev_s *ads7828_initialize(FAR struct i2c_master_s *i2c,
uint8_t addr);
+/****************************************************************************
+ * Name: max1161x_initialize
+ *
+ * Description:
+ * Initialize ADC
+ *
+ * Input Parameters:
+ * i2c - Pointer to a valid I2C master struct.
+ *
+ * Returned Value:
+ * Valid MX1161X device structure reference on success; a NULL on failure
+ *
+ ****************************************************************************/
+
+FAR struct adc_dev_s *max1161x_initialize(FAR struct i2c_master_s *i2c);
+
#if defined(__cplusplus)
}
#endif
diff --git a/include/nuttx/analog/ioctl.h b/include/nuttx/analog/ioctl.h
index 2527983..f9d6653 100644
--- a/include/nuttx/analog/ioctl.h
+++ b/include/nuttx/analog/ioctl.h
@@ -82,13 +82,12 @@
/* See include/nuttx/analog/lm92001.h */
-#define AN_LMP92001_FIRST (AN_FIRST + AN_NCMDS + AN_ADS2142_NCMDS)
+#define AN_LMP92001_FIRST (AN_ADS2142_FIRST + AN_ADS2142_NCMDS)
#define AN_LMP92001_NCMDS 7
/* See include/nuttx/analog/ads7828.h */
-#define AN_ADS7828_FIRST (AN_FIRST + AN_NCMDS + AN_ADS2142_NCMDS + \
- AN_LMP92001_NCMDS)
+#define AN_ADS7828_FIRST (AN_LMP92001_FIRST + AN_LMP92001_NCMDS)
#define AN_ADS7828_NCMDS 6
/* See arch/arm/src/stm32l4/stm32l4_adc.h */
@@ -96,6 +95,11 @@
#define AN_STM32L4_FIRST (AN_ADS7828_FIRST + AN_ADS7828_NCMDS)
#define AN_STM32L4_NCMDS 2
+/* See include/nuttx/analog/max1161x.h */
+
+#define AN_MAX1161X_FIRST (AN_STM32L4_FIRST + AN_STM32L4_NCMDS)
+#define AN_MAX1161X_NCMDS 8
+
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
diff --git a/include/nuttx/analog/max1161x.h b/include/nuttx/analog/max1161x.h
new file mode 100644
index 0000000..64859f4
--- /dev/null
+++ b/include/nuttx/analog/max1161x.h
@@ -0,0 +1,122 @@
+/****************************************************************************
+ * include/nuttx/analog/max1161x.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_MAX1161X_H
+#define __INCLUDE_NUTTX_ANALOG_MAX1161X_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/analog/ioctl.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* IOCTL Commands
+ * Cmd: ANIOC_MAX1161X_SET_REF Arg: enum max1161x_ref_e
+ * Cmd: ANIOC_MAX1161X_SET_CLOCK Arg: enum max1161x_clock_e
+ * Cmd: ANIOC_MAX1161X_SET_UNIBIP Arg: enum max1161x_unibip_e
+ * Cmd: ANIOC_MAX1161X_SET_SCAN Arg: enum max1161x_scan_e
+ * Cmd: ANIOC_MAX1161X_ADD_CHAN Arg: uint8_t value
+ * Cmd: ANIOC_MAX1161X_REMOVE_CHAN Arg: uint8_t value
+ * Cmd: ANIOC_MAX1161X_SET_SNGDIF Arg: enum max1161x_sngdif_e
+ * Cmd: ANIOC_MAX1161X_READ_CHANNEL Arg: struct adc_msg_s *channel
+ */
+
+#define ANIOC_MAX1161X_SET_REF _ANIOC(AN_MAX1161X_FIRST + 0)
+#define ANIOC_MAX1161X_SET_CLOCK _ANIOC(AN_MAX1161X_FIRST + 1)
+#define ANIOC_MAX1161X_SET_UNIBIP _ANIOC(AN_MAX1161X_FIRST + 2)
+#define ANIOC_MAX1161X_SET_SCAN _ANIOC(AN_MAX1161X_FIRST + 3)
+#define ANIOC_MAX1161X_ADD_CHAN _ANIOC(AN_MAX1161X_FIRST + 4)
+#define ANIOC_MAX1161X_REMOVE_CHAN _ANIOC(AN_MAX1161X_FIRST + 5)
+#define ANIOC_MAX1161X_SET_SNGDIF _ANIOC(AN_MAX1161X_FIRST + 6)
+#define ANIOC_MAX1161X_READ_CHANNEL _ANIOC(AN_MAX1161X_FIRST + 7)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* Setup Byte */
+
+/****************************************************************************
+ * +----+----+----+------+---------+---------+---------------+
+ * |SEL2|SEL1|SEL0| VREF | Ref Pin | Ref Dir | Int Ref State |
+ * +----+----+----+------+---------+---------+---------------+
+ * | 0 | 0 | x | VDD | AIN | NC | off |
+ * | 0 | 1 | x | EXT | RIN | IN | off |
+ * | 1 | 0 | 0 | INT | AIN | NC | off |
+ * | 1 | 0 | 1 | INT | AIN | NC | on |
+ * | 1 | 1 | 0 | INT | ROUT | OUT | off |
+ * | 1 | 1 | 1 | INT | ROUT | OUT | on |
+ * +----+----+----+------+---------+---------+---------------+
+ ****************************************************************************/
+
+enum max1161x_ref_e
+{
+ MAX1161X_REF_VDD_AIN_NC_OFF = 0u,
+ MAX1161X_REF_EXT_RIN_IN_OFF = 2u,
+ MAX1161X_REF_INT_AIN_NC_OFF = 4u,
+ MAX1161X_REF_INT_AIN_NC_ON = 5u,
+ MAX1161X_REF_INT_ROUT_OUT_OFF = 6u,
+ MAX1161X_REF_INT_ROUT_OUT_ON = 7u,
+};
+
+enum max1161x_clock_e
+{
+ MAX1161X_CLOCK_INT = 0u,
+ MAX1161X_CLOCK_EXT
+};
+
+enum max1161x_unibip_e
+{
+ MAX1161X_UNIPOLAR = 0u,
+ MAX1161X_BIPOLAR
+};
+
+enum max1161x_reset_e
+{
+ MAX1161X_NO_RESET = 0u,
+ MAX1161X_RESET
+};
+
+/* Configuration Byte */
+
+enum max1161x_scan_e
+{
+ MAX1161X_SCAN_FROM_ZERO = 0u,
+ MAX1161X_SCAN_EIGHT_TIMES,
+ MAX1161X_SCAN_UPPER,
+ MAX1161X_SCAN_NONE
+};
+
+enum max1161x_sngdif_e
+{
+ MAX1161X_DIFFERENTIAL = 0u,
+ MAX1161X_SINGLE_ENDED
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __INCLUDE_NUTTX_ANALOG_MAX1161X_H */