[rtems commit] dev/i2c: Add I2C device support for FPGA Slave, LM25066A, TMP112, ADS1113, ADS1114 and ADS1115
Chris Johns
chrisj at rtems.org
Sun Aug 20 01:12:46 UTC 2017
Module: rtems
Branch: master
Commit: 849500d0f226e9aa81cbfddf7c09c0f83a7568f9
Changeset: http://git.rtems.org/rtems/commit/?id=849500d0f226e9aa81cbfddf7c09c0f83a7568f9
Author: Chris Johns <chrisj at rtems.org>
Date: Wed Aug 16 15:10:33 2017 +1000
dev/i2c: Add I2C device support for FPGA Slave, LM25066A, TMP112, ADS1113, ADS1114 and ADS1115
Closes #3101.
---
cpukit/dev/Makefile.am | 8 +
cpukit/dev/i2c/fpga-i2c-slave.c | 132 +++++++++
cpukit/dev/i2c/ti-ads-16bit-adc.c | 239 ++++++++++++++++
cpukit/dev/i2c/ti-lm25066a.c | 376 ++++++++++++++++++++++++++
cpukit/dev/i2c/ti-tmp112.c | 229 ++++++++++++++++
cpukit/dev/include/dev/i2c/fpga-i2c-slave.h | 25 ++
cpukit/dev/include/dev/i2c/ti-ads-16bit-adc.h | 203 ++++++++++++++
cpukit/dev/include/dev/i2c/ti-lm25066a.h | 190 +++++++++++++
cpukit/dev/include/dev/i2c/ti-tmp112.h | 109 ++++++++
cpukit/dev/preinstall.am | 16 ++
10 files changed, 1527 insertions(+)
diff --git a/cpukit/dev/Makefile.am b/cpukit/dev/Makefile.am
index f8428b7..debb084 100644
--- a/cpukit/dev/Makefile.am
+++ b/cpukit/dev/Makefile.am
@@ -7,10 +7,14 @@ include_dev_HEADERS =
include_dev_i2cdir = $(includedir)/dev/i2c
include_dev_i2c_HEADERS =
include_dev_i2c_HEADERS += include/dev/i2c/eeprom.h
+include_dev_i2c_HEADERS += include/dev/i2c/fpga-i2c-slave.h
include_dev_i2c_HEADERS += include/dev/i2c/gpio-nxp-pca9535.h
include_dev_i2c_HEADERS += include/dev/i2c/i2c.h
include_dev_i2c_HEADERS += include/dev/i2c/switch-nxp-pca9548a.h
include_dev_i2c_HEADERS += include/dev/i2c/xilinx-axi-i2c.h
+include_dev_i2c_HEADERS += include/dev/i2c/ti-ads-16bit-adc.h
+include_dev_i2c_HEADERS += include/dev/i2c/ti-lm25066a.h
+include_dev_i2c_HEADERS += include/dev/i2c/ti-tmp112.h
include_dev_spidir = $(includedir)/dev/spi
include_dev_spi_HEADERS =
@@ -33,11 +37,15 @@ noinst_LIBRARIES = libdev.a
libdev_a_SOURCES =
libdev_a_SOURCES += i2c/eeprom.c
+libdev_a_SOURCES += i2c/fpga-i2c-slave.c
libdev_a_SOURCES += i2c/gpio-nxp-pca9535.c
libdev_a_SOURCES += i2c/i2c-bus.c
libdev_a_SOURCES += i2c/i2c-dev.c
libdev_a_SOURCES += i2c/switch-nxp-pca9548a.c
libdev_a_SOURCES += i2c/xilinx-axi-i2c.c
+libdev_a_SOURCES += i2c/ti-ads-16bit-adc.c
+libdev_a_SOURCES += i2c/ti-lm25066a.c
+libdev_a_SOURCES += i2c/ti-tmp112.c
libdev_a_SOURCES += spi/spi-bus.c
libdev_a_SOURCES += serial/sc16is752.c
libdev_a_SOURCES += serial/sc16is752-spi.c
diff --git a/cpukit/dev/i2c/fpga-i2c-slave.c b/cpukit/dev/i2c/fpga-i2c-slave.c
new file mode 100644
index 0000000..cf00a57
--- /dev/null
+++ b/cpukit/dev/i2c/fpga-i2c-slave.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * I2C slave for testing:
+ * https://github.com/oetr/FPGA-I2C-Slave
+ */
+
+#if HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <dev/i2c/i2c.h>
+#include <dev/i2c/fpga-i2c-slave.h>
+
+typedef struct {
+ i2c_dev base;
+ uint16_t address;
+ size_t size;
+} fpga_i2c_slave;
+
+static ssize_t
+fpga_i2c_slave_read(i2c_dev* base, void* buf, size_t n, off_t offset)
+{
+ fpga_i2c_slave* dev = (fpga_i2c_slave*) base;
+ off_t avail = dev->size - offset;
+ uint8_t* in = buf;
+ size_t todo;
+
+ if (avail <= 0) {
+ return 0;
+ }
+
+ if (n > avail) {
+ n = (size_t) avail;
+ }
+
+ todo = n;
+
+ while (todo > 0) {
+ /*
+ * Limit the transfer size so that it can be stored in 8-bits. This may
+ * help some bus controllers.
+ */
+ uint16_t cur = (uint16_t) (todo < 255 ? todo : 255);
+ i2c_msg msgs = {
+ .addr = dev->base.address,
+ .flags = I2C_M_RD,
+ .buf = in,
+ .len = cur
+ };
+ int err;
+ err = i2c_bus_transfer(dev->base.bus, &msgs, 1);
+ if (err != 0) {
+ return err;
+ }
+ todo -= cur;
+ in += cur;
+ }
+
+ return (ssize_t) n;
+}
+
+static ssize_t
+fpga_i2c_slave_write(i2c_dev* base, const void* buf, size_t n, off_t offset)
+{
+ fpga_i2c_slave* dev = (fpga_i2c_slave*) base;
+ off_t avail = dev->size - offset;
+ const uint8_t* out = buf;
+ size_t todo;
+
+ if (avail <= 0) {
+ return 0;
+ }
+
+ if (n > avail) {
+ n = (size_t) avail;
+ }
+
+ todo = n;
+
+ while (todo > 0) {
+ /*
+ * Limit the transfer size so that it can be stored in 8-bits. This may
+ * help some bus controllers.
+ */
+ uint16_t cur = (uint16_t) (todo < 255 ? todo : 255);
+ i2c_msg msgs = {
+ .addr = dev->base.address,
+ .flags = 0,
+ .buf = RTEMS_DECONST(uint8_t*, out),
+ .len = cur
+ };
+ int err;
+ err = i2c_bus_transfer(dev->base.bus, &msgs, 1);
+ if (err != 0) {
+ return err;
+ }
+ todo -= cur;
+ out += cur;
+ }
+
+ return (ssize_t) n;
+}
+
+int
+i2c_dev_register_fpga_i2c_slave(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ size_t size)
+
+{
+ fpga_i2c_slave* dev;
+
+ dev = (fpga_i2c_slave*)
+ i2c_dev_alloc_and_init(sizeof(*dev), bus_path, address);
+ if (dev == NULL) {
+ return -1;
+ }
+
+ dev->base.read = fpga_i2c_slave_read;
+ dev->base.write = fpga_i2c_slave_write;
+ dev->size = size;
+
+ return i2c_dev_register(&dev->base, dev_path);
+}
diff --git a/cpukit/dev/i2c/ti-ads-16bit-adc.c b/cpukit/dev/i2c/ti-ads-16bit-adc.c
new file mode 100644
index 0000000..35e6a7e
--- /dev/null
+++ b/cpukit/dev/i2c/ti-ads-16bit-adc.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright (c) 2016-2016 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <unistd.h>
+
+#include <dev/i2c/i2c.h>
+#include <dev/i2c/ti-ads-16bit-adc.h>
+
+/*
+ * Registers.
+ */
+#define ADS_CONVERSION (0)
+#define ADS_CONFIG (1)
+#define ADS_LO_THRESH (2)
+#define ADS_HI_THRESH (3)
+
+/*
+ * Configuration register.
+ */
+#define CFG_OS_NOT_CONVERTING (1 << 15) /* read */
+#define CFG_OS_START_SSHOT (1 << 15) /* write */
+#define CFG_MUX_BASE (12)
+#define CFG_MUX_MASK (7)
+#define CFG_PGA_BASE (9)
+#define CFG_PGA_MASK (7)
+#define CFG_MODE_BASE (8)
+#define CFG_MODE_MASK (1)
+#define CFG_DATA_RATE_BASE (5)
+#define CFG_DATA_RATE_MASK (7)
+#define CFG_COMP_BASE (0)
+#define CFG_COMP_MASK (0x1f)
+#define CFG_COMP_MODE_ACTIVE_LOW (0 << 4)
+#define CFG_COMP_MODE_ACTIVE_HIGH (1 << 4)
+
+#define CFG_MODE_CONT (0 << CFG_MODE_BASE)
+#define CFG_MODE_SSHOT (1 << CFG_MODE_BASE)
+
+typedef struct {
+ i2c_dev base;
+ ti_ads_adc device;
+ uint32_t poll_wait_period;
+ int reg;
+ uint16_t config_shadow;
+} ti_ads;
+
+static int
+ti_ads_reg_write(ti_ads* dev, int reg, uint16_t value)
+{
+ uint8_t out[3];
+ i2c_msg msgs[1] = {
+ {
+ .addr = dev->base.address,
+ .flags = 0,
+ .len = (uint16_t) sizeof(out),
+ .buf = &out[0]
+ }
+ };
+ out[0] = (uint8_t) reg;
+ out[1] = (uint8_t) (value >> 8);
+ out[2] = (uint8_t) value;
+ return i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+}
+
+static int
+ti_ads_reg_read(ti_ads* dev, int reg, uint16_t* value)
+{
+ uint8_t in[2] = { 0, 0 };
+ uint8_t out[1] = { (uint8_t) reg };
+ i2c_msg msgs[2] = {
+ {
+ .addr = dev->base.address,
+ .flags = 0,
+ .len = (uint16_t) sizeof(out),
+ .buf = &out[0]
+ }, {
+ .addr = dev->base.address,
+ .flags = I2C_M_RD,
+ .len = (uint16_t) sizeof(in),
+ .buf = &in[0]
+ }
+ };
+ int err;
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ *value = (((uint16_t) in[0]) << 8) | in[1];
+ return err;
+}
+
+static int
+ti_ads_set_config(ti_ads* dev, uint16_t value, int base, uint16_t mask)
+{
+ int err;
+ dev->config_shadow &= ~(mask << base);
+ dev->config_shadow |= (value & mask) << base;
+ err = ti_ads_reg_write(dev, ADS_CONFIG, dev->config_shadow);
+ return err;
+}
+
+static int
+ti_ads_sample(ti_ads* dev, uint16_t* value)
+{
+ int err;
+ if ((dev->config_shadow & CFG_MODE_SSHOT) == CFG_MODE_SSHOT) {
+ i2c_bus_obtain(dev->base.bus);
+ err = ti_ads_reg_write(dev,
+ ADS_CONFIG,
+ dev->config_shadow | CFG_OS_START_SSHOT);
+ if (err == 0) {
+ uint16_t config = 0;
+ while (err == 0 && (config & CFG_OS_NOT_CONVERTING) == 0) {
+ err = ti_ads_reg_read(dev, ADS_CONFIG, &config);
+ if (dev->poll_wait_period && (config & CFG_OS_NOT_CONVERTING) == 0)
+ usleep(dev->poll_wait_period);
+ }
+ err = ti_ads_reg_read(dev, ADS_CONVERSION, value);
+ }
+ i2c_bus_release(dev->base.bus);
+ }
+ else {
+ err = ti_ads_reg_read(dev, ADS_CONVERSION, value);
+ }
+ return err;
+}
+
+static int
+ti_ads_ioctl(i2c_dev* iic_dev, ioctl_command_t command, void* arg)
+{
+ ti_ads* dev = (ti_ads*) iic_dev;
+ uint16_t value;
+ int err;
+
+ switch (command) {
+ case TI_ADS_ADC_GET_CONVERSION:
+ value = 0;
+ err = ti_ads_sample(dev, &value);
+ if (err == 0)
+ *((uint16_t*) arg) = value;
+ break;
+ case TI_ADS_ADC_SET_MUX:
+ if (dev->device == TI_ADS1115) {
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_set_config(dev, value, CFG_MUX_BASE, CFG_MUX_MASK);
+ }
+ else {
+ err = -ENOTTY;
+ }
+ break;
+ case TI_ADS_ADC_SET_MODE:
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_set_config(dev, value, CFG_MODE_BASE, CFG_MODE_MASK);
+ break;
+ case TI_ADS_ADC_SET_PGA:
+ if (dev->device == TI_ADS1114 || dev->device == TI_ADS1115) {
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_set_config(dev, value, CFG_PGA_BASE, CFG_PGA_MASK);
+ }
+ else {
+ err = -ENOTTY;
+ }
+ break;
+ case TI_ADS_ADC_SET_COMP:
+ if (dev->device == TI_ADS1114 || dev->device == TI_ADS1115) {
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_set_config(dev, value, CFG_COMP_BASE, CFG_COMP_MASK);
+ }
+ else {
+ err = -ENOTTY;
+ }
+ break;
+ case TI_ADS_ADC_SET_LO_THRESH:
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_reg_write(dev, ADS_LO_THRESH, value);
+ break;
+ case TI_ADS_ADC_SET_HI_THRESH:
+ value = (uint16_t)(uintptr_t) arg;
+ err = ti_ads_reg_write(dev, ADS_HI_THRESH, value);
+ break;
+ case TI_ADS_ADC_SET_CONV_WAIT:
+ dev->poll_wait_period = (uint32_t)(uintptr_t) arg;
+ err = 0;
+ break;
+ default:
+ err = -ENOTTY;
+ break;
+ }
+
+ return err;
+}
+
+int
+i2c_dev_register_ti_ads_adc(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ ti_ads_adc device)
+{
+ ti_ads* dev;
+
+ dev = (ti_ads*)
+ i2c_dev_alloc_and_init(sizeof(*dev), bus_path, address);
+ if (dev == NULL) {
+ return -1;
+ }
+
+ dev->base.ioctl = ti_ads_ioctl;
+ dev->device = device;
+ dev->config_shadow = 0;
+
+ switch (device) {
+ default:
+ errno = EIO;
+ return -1;
+ case TI_ADS1115:
+ dev->config_shadow |= ((TI_ADS_MUX_ApA0_AnA1 << CFG_MUX_BASE) |
+ (TI_ADS_PGA_FS_2_048V << CFG_PGA_BASE) |
+ ((TI_ADS_COMP_MODE_HYSTERESIS |
+ TI_ADS_COMP_POL_ACTIVE_LOW |
+ TI_ADS_COMP_LAT_NON_LATCHING |
+ TI_ADS_COMP_QUE_DISABLE_COMP) << CFG_COMP_BASE));
+ /* FALLTHRU */
+ case TI_ADS1114:
+ dev->config_shadow |= TI_ADS_PGA_FS_2_048V << CFG_PGA_BASE;
+ /* FALLTHRU */
+ case TI_ADS1113:
+ dev->config_shadow |= (CFG_MODE_SSHOT |
+ (TI_ADS_DATARATE_8SPS << CFG_DATA_RATE_BASE));
+ break;
+ }
+
+ return i2c_dev_register(&dev->base, dev_path);
+}
diff --git a/cpukit/dev/i2c/ti-lm25066a.c b/cpukit/dev/i2c/ti-lm25066a.c
new file mode 100644
index 0000000..3f8c32f
--- /dev/null
+++ b/cpukit/dev/i2c/ti-lm25066a.c
@@ -0,0 +1,376 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include <dev/i2c/i2c.h>
+#include <dev/i2c/ti-lm25066a.h>
+
+/*
+ * Commands.
+ *
+ * The commands are listed in Table 1 in the datasheet. These are the mapped to
+ * command ids in the intreface. Commands have different data size, a mix of
+ * read and write amd formats.
+ *
+ * The formats for values is listed in Table 41 in the datasheet.
+ */
+
+#define CMD_RD (1 << 0)
+#define CMD_WR (1 << 1)
+#define CMD_RW (CMD_RD | CMD_WR)
+#define CMD_STR (1 << 2)
+#define CMD_VAL_ (1 << 3)
+#define CMD_BLK_ (1 << 4)
+#define CMD_INDEX_BASE (16UL)
+#define CMD_INDEX_MASK (0xfUL)
+#define CMD_VAL(l) (CMD_VAL_ | (((uint32_t) (l)) << CMD_INDEX_BASE))
+#define CMD_BLK(l) (CMD_BLK_ | (((uint32_t) (l)) << CMD_INDEX_BASE))
+#define CMD_INDEX(f) ((((uint32_t) (f)) >> CMD_INDEX_BASE) & CMD_INDEX_MASK)
+
+/*
+ * Number of bits in the ADC.
+ */
+#define ADC_BITS (12)
+
+/*
+ * Blocks of values that can be read.
+ */
+static const ti_lm25066a_cmd block_read[] =
+{
+ TI_LM25066A_MFR_DIAGNOSTIC_WORD_READ,
+ TI_LM25066A_MFR_READ_IIN,
+ TI_LM25066A_READ_VOUT,
+ TI_LM25066A_READ_VIN,
+ TI_LM25066A_MFR_READ_PIN,
+ TI_LM25066A_READ_TEMPERATURE_1
+};
+
+static const ti_lm25066a_cmd avg_block_read[] =
+{
+ TI_LM25066A_MFR_DIAGNOSTIC_WORD_READ,
+ TI_LM25066A_MFR_READ_AVG_IIN,
+ TI_LM25066A_MFR_READ_AVG_VOUT,
+ TI_LM25066A_MFR_READ_AVG_VIN,
+ TI_LM25066A_MFR_READ_AVG_PIN,
+ TI_LM25066A_READ_TEMPERATURE_1
+};
+
+static const ti_lm25066a_cmd* blocks[] =
+{
+ block_read,
+ avg_block_read
+};
+
+typedef struct
+{
+ uint8_t cmd;
+ uint16_t size;
+ uint32_t flags;
+} ti_lm25066a_i2c_cmd;
+
+/*
+ * Table 1.
+ */
+static const ti_lm25066a_i2c_cmd commands[] =
+{
+ { 0x01, 1, CMD_RW }, /* OPERATION */
+ { 0x03, 0, CMD_WR }, /* CLEAR_FAULTS */
+ { 0x19, 1, CMD_RD }, /* CAPABILITY */
+ { 0x43, 2, CMD_RW | CMD_VAL(1) }, /* VOUT_UV_WARN_LIMIT */
+ { 0x4f, 2, CMD_RW | CMD_VAL(5) }, /* OT_FAULT_LIMIT */
+ { 0x51, 2, CMD_RW | CMD_VAL(5) }, /* OT_WARN_LIMIT */
+ { 0x57, 2, CMD_RD | CMD_VAL(0) }, /* VIN_OV_WARN_LIMIT */
+ { 0x58, 2, CMD_RW | CMD_VAL(0) }, /* VIN_UV_WARN_LIMIT */
+ { 0x78, 1, CMD_RD }, /* STATUS_BYTE */
+ { 0x79, 2, CMD_RD }, /* STATUS_WORD */
+ { 0x7a, 1, CMD_RD }, /* STATUS_VOUT */
+ { 0x7c, 1, CMD_RD }, /* STATUS_INPUT */
+ { 0x7d, 1, CMD_RD }, /* STATUS_TEMPERATURE */
+ { 0x7e, 1, CMD_RD }, /* STATUS_CML */
+ { 0x80, 1, CMD_RD }, /* STATUS_MFR_SPECIFIC */
+ { 0x88, 2, CMD_RD | CMD_VAL(0) }, /* READ_VIN */
+ { 0x8b, 2, CMD_RD | CMD_VAL(1) }, /* READ_VOUT */
+ { 0x8d, 2, CMD_RD | CMD_VAL(5) }, /* READ_TEMPERATURE_1 */
+ { 0x99, 4, CMD_RD | CMD_STR }, /* MFR_ID */
+ { 0x9a, 9, CMD_RD | CMD_STR }, /* MFR_MODEL */
+ { 0x9b, 2, CMD_RD | CMD_STR }, /* MFR_REVISION */
+ { 0xd0, 2, CMD_RD | CMD_VAL(2) }, /* MFR_READ_VAUX */
+ { 0xd1, 2, CMD_RD | CMD_VAL(3) }, /* MFR_READ_IIN */
+ { 0xd2, 2, CMD_RD | CMD_VAL(4) }, /* MFR_READ_PIN */
+ { 0xd3, 2, CMD_RW | CMD_VAL(3) }, /* MFR_IIN_OC_WARN_LIMIT */
+ { 0xd4, 2, CMD_RW | CMD_VAL(4) }, /* MFR_PIN_OP_WARN_LIMIT */
+ { 0xd5, 2, CMD_RD | CMD_VAL(4) }, /* MFR_PIN_PEAK */
+ { 0xd6, 0, CMD_WR }, /* MFR_CLEAR_PIN_PEAK */
+ { 0xd7, 1, CMD_RW }, /* MFR_GATE_MASK */
+ { 0xd8, 2, CMD_RW }, /* MFR_ALERT_MASK */
+ { 0xd9, 1, CMD_RD }, /* MFR_DEVICE_SETUP */
+ { 0xda, 13, CMD_RD | CMD_BLK(0) }, /* MFR_BLOCK_READ */
+ { 0xdb, 1, CMD_RW }, /* MFR_SAMPLES_FOR_AVG */
+ { 0xdc, 2, CMD_RD | CMD_VAL(0) }, /* MFR_READ_AVG_VIN */
+ { 0xdd, 2, CMD_RD | CMD_VAL(1) }, /* MFR_READ_AVG_VOUT */
+ { 0xde, 2, CMD_RD | CMD_VAL(3) }, /* MFR_READ_AVG_IIN */
+ { 0xdf, 2, CMD_RD | CMD_VAL(4) }, /* MFR_READ_AVG_PIN */
+ { 0xe0, 13, CMD_RD | CMD_BLK(0) }, /* MFR_BLACK_BOX_READ */
+ { 0xe1, 2, CMD_RD }, /* MFR_DIAGNOSTIC_WORD_READ */
+ { 0xe2, 13, CMD_RD | CMD_BLK(1) }, /* MFR_AVG_BLOCK_READ */
+};
+
+#define IO_CMDS (sizeof(commands) / sizeof(commands[0]))
+#define IO_INTS (6)
+#define IO_MESSAGE_SIZE ((sizeof(uint16_t) * IO_INTS) + 2)
+
+typedef struct {
+ i2c_dev base;
+ uint8_t pointer;
+ uint16_t config_shadow;
+ const ti_lm25066a_conversion* conversions;
+ int scale;
+ uint8_t buffer[IO_MESSAGE_SIZE];
+} ti_lm25066a;
+
+/*
+ * Convert a value using table 41 in the data sheet.
+ */
+static int
+ti_lm25066a_io_convert_to_real(ti_lm25066a* dev, uint16_t word, int conversion)
+{
+ const ti_lm25066a_conversion* const con = &dev->conversions[conversion];
+ uint32_t u = word;
+ int value;
+ value = ((int) (u & ((1 << ADC_BITS) - 1))) * dev->scale;
+ value = ((value * con->R) - con->b) / con->m;
+ return value;
+}
+
+static void
+ti_lm25066a_io_convert_block(ti_lm25066a* dev,
+ const uint16_t* words,
+ int* values,
+ int block)
+{
+ const ti_lm25066a_cmd* cmds = blocks[block];
+ int c;
+ /*
+ * A block is always 6 values.
+ */
+ values[0] = words[0];
+ for (c = 1; c < 6; ++c) {
+ const ti_lm25066a_i2c_cmd* cmd = &commands[cmds[c]];
+ if ((cmd->flags & CMD_VAL_) != 0) {
+ values[c] =
+ ti_lm25066a_io_convert_to_real(dev, words[c], CMD_INDEX(cmd->flags));
+ } else {
+ values[c] = words[c];
+ }
+ }
+}
+
+static int
+ti_lm25066a_io_read(ti_lm25066a* dev, ti_lm25066a_io* io)
+{
+ const ti_lm25066a_i2c_cmd* cmd;
+ uint8_t out[1];
+ uint8_t* in = dev->buffer;
+ i2c_msg msgs[2];
+ int err;
+
+ if (io->cmd >= IO_CMDS)
+ return -EIO;
+
+ cmd = &commands[io->cmd];
+
+ if ((cmd->flags & CMD_RD) == 0)
+ return -EIO;
+
+ out[0] = cmd->cmd;
+ msgs[0].addr = dev->base.address;
+ msgs[0].flags = 0;
+ msgs[0].len = (uint16_t) sizeof(out);
+ msgs[0].buf = &out[0];
+ msgs[1].addr = dev->base.address;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = (uint16_t) cmd->size;
+ msgs[1].buf = &in[0];
+
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ if (err != 0)
+ return err;
+
+ err = -EIO;
+
+ switch (io->type) {
+ case TI_LM25066A_8BIT:
+ io->data.u8 = in[0];
+ err = 0;
+ break;
+ case TI_LM25066A_16BIT:
+ io->data.u16 = (((uint16_t) in[0]) << 8) | in[1];
+ err = 0;
+ break;
+ case TI_LM25066A_VALUE:
+ if ((cmd->flags & CMD_VAL_) != 0) {
+ uint16_t data = ((uint16_t) in[1]) << 8 | in[0];
+ io->data.value =
+ ti_lm25066a_io_convert_to_real(dev, data, CMD_INDEX(cmd->flags));
+ }
+ else {
+ io->data.value = ((uint16_t) in[1]) << 8 | in[0];;
+ }
+ err = 0;
+ break;
+ case TI_LM25066A_VALUES:
+ if ((cmd->flags & CMD_BLK_) != 0) {
+ uint16_t data[in[0] / 2];
+ uint16_t* d = &data[0];
+ uint8_t* i = &in[1];
+ int w;
+ for (w = 0; w < (in[0] / 2); ++w, ++d, i += 2) {
+ *d = (((uint16_t) i[1]) << 8) | i[0] ;
+ }
+ ti_lm25066a_io_convert_block(dev,
+ &data[0],
+ &io->data.values[0],
+ CMD_INDEX(cmd->flags));
+ err = 0;
+ }
+ break;
+ case TI_LM25066A_STRING:
+ memcpy(&io->data.string[0], &in[0], cmd->size);
+ err = 0;
+ break;
+ case TI_LM25066A_RAW:
+ memcpy(io->data.raw, &in[0], cmd->size);
+ err = 0;
+ break;
+ default:
+ break;
+ }
+
+ return err;
+}
+
+static int
+ti_lm25066a_io_write(ti_lm25066a* dev, ti_lm25066a_io* io)
+{
+ const ti_lm25066a_i2c_cmd* cmd;
+ uint8_t* out = dev->buffer;
+ uint16_t length = 0;
+ int err;
+
+ if (io->cmd >= IO_CMDS)
+ return -EIO;
+
+ cmd = &commands[io->cmd];
+
+ if ((cmd->flags & CMD_WR) == 0)
+ return -EIO;
+
+ out[0] = cmd->cmd;
+
+ if (cmd->size == 0) {
+ out[1] = 0;
+ length = 1;
+ }
+ else {
+ switch (io->type) {
+ case TI_LM25066A_8BIT:
+ out[1] = io->data.u8;
+ length = 1 + 1;
+ break;
+ case TI_LM25066A_16BIT:
+ out[1] = io->data.u16 >> 8;
+ out[2] = io->data.u16;
+ length = 2 + 1;
+ break;
+ case TI_LM25066A_VALUE:
+ break;
+ case TI_LM25066A_VALUES:
+ break;
+ case TI_LM25066A_STRING:
+ break;
+ case TI_LM25066A_RAW:
+ memcpy(&out[1], io->data.raw, cmd->size);
+ length = cmd->size + 1;
+ err = 0;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (length == 0)
+ err = -EIO;
+ else {
+ i2c_msg msgs[1] = {
+ {
+ .addr = dev->base.address,
+ .flags = 0,
+ .len = length,
+ .buf = &out[0]
+ }
+ };
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ }
+
+ return err;
+}
+
+static int
+ti_lm25066a_ioctl(i2c_dev* iic_dev, ioctl_command_t command, void* arg)
+{
+ ti_lm25066a* dev = (ti_lm25066a*) iic_dev;
+ ti_lm25066a_io* io = (ti_lm25066a_io*) arg;
+ int err;
+
+ switch (command) {
+ case TI_LM25066A_GET:
+ err = ti_lm25066a_io_read(dev, io);
+ break;
+ case TI_LM25066A_SET:
+ err = ti_lm25066a_io_write(dev, io);
+ break;
+ default:
+ err = -ENOTTY;
+ break;
+ }
+
+ return err;
+}
+
+int
+i2c_dev_register_ti_lm25066a(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ const ti_lm25066a_conversion* const conversions,
+ const int decimal_points)
+{
+ ti_lm25066a* dev;
+ int i;
+
+ dev = (ti_lm25066a*)
+ i2c_dev_alloc_and_init(sizeof(*dev), bus_path, address);
+ if (dev == NULL) {
+ return -1;
+ }
+
+ dev->base.ioctl = ti_lm25066a_ioctl;
+ dev->pointer = -1;
+ dev->config_shadow = 0;
+ dev->conversions = conversions;
+ dev->scale = 1;
+ for (i = 0; i < decimal_points; ++i)
+ dev->scale *= 10;
+
+ return i2c_dev_register(&dev->base, dev_path);
+}
diff --git a/cpukit/dev/i2c/ti-tmp112.c b/cpukit/dev/i2c/ti-tmp112.c
new file mode 100644
index 0000000..0886a4d
--- /dev/null
+++ b/cpukit/dev/i2c/ti-tmp112.c
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include <dev/i2c/i2c.h>
+#include <dev/i2c/ti-tmp112.h>
+
+/*
+ * Registers.
+ */
+#define TMP_TEMPERATURE (0)
+#define TMP_CONFIG (1)
+#define TMP_LOW_TEMP (2)
+#define TMP_HIGH_TEMP (3)
+
+/*
+ * Configuration register.
+ */
+#define CFG_ONE_SHOT_BASE (15)
+#define CFG_SHUTDOWN_BASE (8)
+#define CFG_EXTENDED_MODE_BASE (4)
+
+#define CFG_ONE_SHOT (1 << CFG_ONE_SHOT_BASE)
+#define CFG_SHUTDOWN (1 << CFG_SHUTDOWN_BASE)
+#define CFG_EXTENDED_MODE (1 << CFG_EXTENDED_MODE_BASE)
+
+typedef struct {
+ i2c_dev base;
+ uint8_t pointer;
+ uint16_t config_shadow;
+} ti_tmp112;
+
+static int
+ti_tmp112_reg_write(ti_tmp112* dev, int reg, uint16_t value)
+{
+ uint8_t out[3];
+ i2c_msg msgs[1] = {
+ {
+ .addr = dev->base.address,
+ .flags = 0,
+ .len = (uint16_t) sizeof(out),
+ .buf = &out[0]
+ }
+ };
+ int err;
+ if (dev->pointer == reg) {
+ out[0] = (uint8_t) (value >> 8);
+ out[1] = (uint8_t) value;
+ msgs[0].len = 2;
+ }
+ else {
+ out[0] = reg;
+ out[1] = (uint8_t) (value >> 8);
+ out[2] = (uint8_t) value;
+ }
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ if (err == 0)
+ dev->pointer = reg;
+ else
+ dev->pointer = -1;
+ return err;
+}
+
+static int
+ti_tmp112_reg_read(ti_tmp112* dev, int reg, uint16_t* value)
+{
+ uint8_t in[2] = { 0, 0 };
+ int err;
+ if (dev->pointer == reg) {
+ i2c_msg msgs[1] = {
+ {
+ .addr = dev->base.address,
+ .flags = I2C_M_RD,
+ .len = (uint16_t) sizeof(in),
+ .buf = &in[0]
+ }
+ };
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ }
+ else {
+ uint8_t out[1] = { (uint8_t) reg };
+ i2c_msg msgs[2] = {
+ {
+ .addr = dev->base.address,
+ .flags = 0,
+ .len = (uint16_t) sizeof(out),
+ .buf = &out[0]
+ }, {
+ .addr = dev->base.address,
+ .flags = I2C_M_RD,
+ .len = (uint16_t) sizeof(in),
+ .buf = &in[0]
+ }
+ };
+ err = i2c_bus_transfer(dev->base.bus, &msgs[0], RTEMS_ARRAY_SIZE(msgs));
+ if (err == 0)
+ dev->pointer = reg;
+ else
+ dev->pointer = -1;
+ }
+ *value = (((uint16_t) in[0]) << 8) | in[1];
+ return err;
+}
+
+static int
+ti_tmp112_set_config(ti_tmp112* dev, uint16_t value)
+{
+ int err;
+ dev->config_shadow = value;
+ err = ti_tmp112_reg_write(dev, TMP_CONFIG, dev->config_shadow);
+ return err;
+}
+
+static int
+ti_tmp112_get_temp(ti_tmp112* dev, int* temp, bool raw)
+{
+ uint16_t value = 0;
+ int err;
+
+ *temp = 0;
+
+ if ((dev->config_shadow & CFG_SHUTDOWN) == CFG_SHUTDOWN) {
+ i2c_bus_obtain(dev->base.bus);
+ err = ti_tmp112_reg_write(dev,
+ TMP_CONFIG,
+ dev->config_shadow | CFG_ONE_SHOT);
+ if (err == 0) {
+ uint16_t config = 0;
+ while (err == 0 && (config & CFG_ONE_SHOT) == 0)
+ err = ti_tmp112_reg_read(dev, TMP_CONFIG, &config);
+ err = ti_tmp112_reg_read(dev, TMP_TEMPERATURE, &value);
+ }
+ i2c_bus_release(dev->base.bus);
+ }
+ else {
+ err = ti_tmp112_reg_read(dev, TMP_TEMPERATURE, &value);
+ }
+
+ if (err == 0) {
+ if (raw) {
+ *temp = (int) value;
+ }
+ else {
+ int bits = 12;
+ uint32_t u;
+ if ((dev->config_shadow & CFG_EXTENDED_MODE) != 0)
+ bits = 13;
+ u = value >> ((sizeof(value) * 8) - bits);
+ *temp = (int) (u & ((1 << bits) - 1));
+ if ((u & (1 << (bits - 1))) != 0)
+ *temp |= ~((1 << bits) - 1);
+ *temp = *temp * 625;
+ }
+ }
+
+ return err;
+}
+
+static int
+ti_tmp112_ioctl(i2c_dev* iic_dev, ioctl_command_t command, void* arg)
+{
+ ti_tmp112* dev = (ti_tmp112*) iic_dev;
+ uint16_t v16;
+ int vint;
+ int err;
+
+ switch (command) {
+ case TI_TMP112_GET_TEMP:
+ vint = 0;
+ err = ti_tmp112_get_temp(dev, &vint, false);
+ if (err == 0)
+ *((int*) arg) = vint;
+ break;
+ case TI_TMP112_GET_TEMP_RAW:
+ vint = 0;
+ err = ti_tmp112_get_temp(dev, &vint, true);
+ if (err == 0)
+ *((uint16_t*) arg) = (uint16_t) vint;
+ break;
+ case TI_TMP112_SET_CONFIG:
+ v16 = (uint16_t)(uintptr_t) arg;
+ err = ti_tmp112_set_config(dev, v16);
+ break;
+ case TI_TMP112_SET_LOW_TEMP:
+ v16 = (uint16_t)(uintptr_t) arg;
+ err = ti_tmp112_reg_write(dev, TMP_LOW_TEMP, v16);
+ break;
+ case TI_TMP112_SET_HIGH_TEMP:
+ v16 = (uint16_t)(uintptr_t) arg;
+ err = ti_tmp112_reg_write(dev, TMP_HIGH_TEMP, v16);
+ break;
+ default:
+ err = -ENOTTY;
+ break;
+ }
+
+ return err;
+}
+
+int
+i2c_dev_register_ti_tmp112(const char* bus_path,
+ const char* dev_path,
+ uint16_t address)
+{
+ ti_tmp112* dev;
+
+ dev = (ti_tmp112*)
+ i2c_dev_alloc_and_init(sizeof(*dev), bus_path, address);
+ if (dev == NULL) {
+ return -1;
+ }
+
+ dev->base.ioctl = ti_tmp112_ioctl;
+ dev->pointer = -1;
+ dev->config_shadow = 0x60a0;
+
+ return i2c_dev_register(&dev->base, dev_path);
+}
diff --git a/cpukit/dev/include/dev/i2c/fpga-i2c-slave.h b/cpukit/dev/include/dev/i2c/fpga-i2c-slave.h
new file mode 100644
index 0000000..c10b26a
--- /dev/null
+++ b/cpukit/dev/include/dev/i2c/fpga-i2c-slave.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * I2C slave for testing:
+ * https://github.com/oetr/FPGA-I2C-Slave
+ */
+
+#ifndef FPGA_I2C_SLAVE_H
+#define FPGA_I2C_SLAVE_H
+
+#include <dev/i2c/i2c.h>
+
+int i2c_dev_register_fpga_i2c_slave(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ size_t size);
+
+#endif
diff --git a/cpukit/dev/include/dev/i2c/ti-ads-16bit-adc.h b/cpukit/dev/include/dev/i2c/ti-ads-16bit-adc.h
new file mode 100644
index 0000000..40d680d
--- /dev/null
+++ b/cpukit/dev/include/dev/i2c/ti-ads-16bit-adc.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * TI ADS1113 and ADS1115.
+ * http://www.ti.com/product/ads1113/description
+ */
+
+#ifndef TI_ADS1113_ADS1115_H
+#define TI_ADS1113_ADS1115_H
+
+#include <dev/i2c/i2c.h>
+
+/*
+ * Supported devices. Please others once tested.
+ */
+typedef enum {
+ TI_ADS1113,
+ TI_ADS1114,
+ TI_ADS1115
+} ti_ads_adc;
+
+/*
+ * Multiplexer interface. Avalable on ADS1115.
+ */
+typedef enum {
+ TI_ADS_MUX_ApA0_AnA1 = 0, /* default */
+ TI_ADS_MUX_ApA0_AnA3 = 1,
+ TI_ADS_MUX_ApA1_AnA3 = 2,
+ TI_ADS_MUX_ApA2_AnA3 = 3,
+ TI_ADS_MUX_ApA0_AnGND = 4,
+ TI_ADS_MUX_ApA1_AnGND = 5,
+ TI_ADS_MUX_ApA2_AnGND = 6,
+ TI_ADS_MUX_ApA3_AnGND = 7
+} ti_ads_adc_mux;
+
+/*
+ * Programmable Gain Amplifier. Avalable on ADS1114 and ADS1115.
+ */
+typedef enum {
+ TI_ADS_PGA_FS_6_144V = 0,
+ TI_ADS_PGA_FS_4_096V = 1,
+ TI_ADS_PGA_FS_2_048V = 2, /* default */
+ TI_ADS_PGA_FS_1_024V = 3,
+ TI_ADS_PGA_FS_0_512V = 4,
+ TI_ADS_PGA_FS_0_256V = 5,
+ TI_ADS_PGA_FS_0_256V_2 = 6,
+ TI_ADS_PGA_FS_0_256V_3 = 7,
+} ti_ads_adc_pga;
+
+/*
+ * Mode.
+ */
+typedef enum {
+ TI_ADS_MODE_CONTINUOUS = 0,
+ TI_ADS_MODE_SINGLE_SHOT = 1, /* default */
+} ti_ads_adc_mode;
+
+/*
+ * Data rate.
+ */
+typedef enum {
+ TI_ADS_DATARATE_8SPS = 0,
+ TI_ADS_DATARATE_16SPS = 1,
+ TI_ADS_DATARATE_32SPS = 2,
+ TI_ADS_DATARATE_64SPS = 3,
+ TI_ADS_DATARATE_128SPS = 4, /* default */
+ TI_ADS_DATARATE_250SPS = 5,
+ TI_ADS_DATARATE_475SPS = 6,
+ TI_ADS_DATARATE_860SPS = 7,
+} ti_ads_adc_data_rate;
+
+/*
+ * Comparitor interface. Avalable on ADS1114 and ADS1115.
+ *
+ * Create a value to write.
+ */
+#define TI_ADS_COMP_MODE_HYSTERESIS (0 << 4) /* default */
+#define TI_ADS_COMP_MODE_WINDOW (1 << 4)
+#define TI_ADS_COMP_POL_ACTIVE_LOW (0 << 3) /* default */
+#define TI_ADS_COMP_POL_ACTIVE_HIGH (1 << 3)
+#define TI_ADS_COMP_LAT_NON_LATCHING (0 << 2) /* default */
+#define TI_ADS_COMP_LAT_LATCHING (1 << 2)
+#define TI_ADS_COMP_QUE_DISABLE_COMP (3 << 0) /* default */
+#define TI_ADS_COMP_QUE_AFTER_4 (2 << 0)
+#define TI_ADS_COMP_QUE_AFTER_2 (1 << 0)
+#define TI_ADS_COMP_QUE_AFTER_1 (0 << 0)
+
+/*
+ * IO control interface.
+ *
+ * Note: if in Power-down single-shot mode (default) a conversion requires the
+ * device to power up and perform a conversion and this can take
+ * while. The TI_ADS_ADC_GET_CONV_WAIT call sets the micro-seconds to
+ * wait between polls. The actual rate will depend on the system tick.
+ */
+#define TI_ADS_ADC_GET_CONVERSION (I2C_DEV_IO_CONTROL + 0)
+#define TI_ADS_ADC_SET_MUX (I2C_DEV_IO_CONTROL + 1)
+#define TI_ADS_ADC_SET_PGA (I2C_DEV_IO_CONTROL + 2)
+#define TI_ADS_ADC_SET_MODE (I2C_DEV_IO_CONTROL + 3)
+#define TI_ADS_ADC_SET_DATA_RATE (I2C_DEV_IO_CONTROL + 4)
+#define TI_ADS_ADC_SET_COMP (I2C_DEV_IO_CONTROL + 5)
+#define TI_ADS_ADC_SET_LO_THRESH (I2C_DEV_IO_CONTROL + 6)
+#define TI_ADS_ADC_SET_HI_THRESH (I2C_DEV_IO_CONTROL + 7)
+#define TI_ADS_ADC_SET_CONV_WAIT (I2C_DEV_IO_CONTROL + 8)
+
+/*
+ * Register the device.
+ */
+int i2c_dev_register_ti_ads_adc(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ ti_ads_adc device);
+
+/*
+ * Perform a conversion. If the mode is single shot a single shot conversion is
+ * started and the call waits for the conversion to complete.
+ */
+static inline int
+ti_ads_adc_convert(int fd, uint16_t* sample)
+{
+ return ioctl(fd, TI_ADS_ADC_GET_CONVERSION, sample);
+}
+
+/*
+ * Set the multipler.
+ */
+static inline int
+ti_ads_adc_set_mux(int fd, ti_ads_adc_mux mux)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_MUX, (void *)(uintptr_t) mux);
+}
+
+/*
+ * Set the PGA.
+ */
+static inline int
+ti_ads_adc_set_pga(int fd, ti_ads_adc_pga pga)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_PGA, (void *)(uintptr_t) pga);
+}
+
+/*
+ * Set the mode.
+ */
+static inline int
+ti_ads_adc_set_mode(int fd, ti_ads_adc_mode mode)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_MODE, (void *)(uintptr_t) mode);
+}
+
+/*
+ * Set the data rate.
+ */
+static inline int
+ti_ads_adc_set_data_rate(int fd, ti_ads_adc_data_rate rate)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_DATA_RATE, (void *)(uintptr_t) rate);
+}
+
+/*
+ * Configure the comparator.
+ */
+static inline int
+ti_ads_adc_set_comparator(int fd, uint16_t comp)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_COMP, (void *)(uintptr_t) comp);
+}
+
+/*
+ * Set the lower threshold.
+ */
+static inline int
+ti_ads_adc_set_low_threshold(int fd, uint16_t level)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_LO_THRESH, (void *)(uintptr_t) level);
+}
+
+/*
+ * Set the upper threshold.
+ */
+static inline int
+ti_ads_adc_set_high_threshold(int fd, uint16_t level)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_HI_THRESH, (void *)(uintptr_t) level);
+}
+
+/*
+ * Set the conversion poll wait period.
+ */
+static inline int
+ti_ads_adc_set_conversion_poll_wait(int fd, uint32_t micro_seconds)
+{
+ return ioctl(fd, TI_ADS_ADC_SET_CONV_WAIT, (void *)(uintptr_t) micro_seconds);
+}
+
+#endif
diff --git a/cpukit/dev/include/dev/i2c/ti-lm25066a.h b/cpukit/dev/include/dev/i2c/ti-lm25066a.h
new file mode 100644
index 0000000..4429f0f
--- /dev/null
+++ b/cpukit/dev/include/dev/i2c/ti-lm25066a.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * TI LM25066A
+ * http://www.ti.com/product/LM25066A
+ */
+
+#ifndef TI_LM25066A_H
+#define TI_LM25066A_H
+
+#include <dev/i2c/i2c.h>
+
+/*
+ * PM Bus Command interface.
+ *
+ * The keys are:
+ * IO : IO direction R=read W=write
+ * SZ : Size in bytes.
+ */
+typedef enum
+{ /* IO SZ Name */
+ TI_LM25066A_OPERATION = 0, /* R 1 PMBus */
+ TI_LM25066A_CLEAR_FAULTS = 1, /* W 0 PMBus */
+ TI_LM25066A_CAPABILITY = 2, /* R 1 PMBus */
+ TI_LM25066A_VOUT_UV_WARN_LIMIT = 3, /* RW 2 PMBus */
+ TI_LM25066A_OT_FAULT_LIMIT = 4, /* RW 2 PMBus */
+ TI_LM25066A_OT_WARN_LIMIT = 5, /* RW 2 PMBus */
+ TI_LM25066A_VIN_OV_WARN_LIMIT = 6, /* RW 2 PMBus */
+ TI_LM25066A_VIN_UV_WARN_LIMIT = 7, /* RW 2 PMBus */
+ TI_LM25066A_STATUS_BYTE = 8, /* R 1 PMBus */
+ TI_LM25066A_STATUS_WORD = 9, /* R 2 PMBus */
+ TI_LM25066A_STATUS_VOUT = 10, /* R 1 PMBus */
+ TI_LM25066A_STATUS_INPUT = 11, /* R 1 PMBus */
+ TI_LM25066A_STATUS_TEMPERATURE = 12, /* R 1 PMBus */
+ TI_LM25066A_STATUS_CML = 13, /* R 1 PMBus */
+ TI_LM25066A_STATUS_MFR_SPECIFIC = 14, /* R 1 PMBus */
+ TI_LM25066A_READ_VIN = 15, /* R 2 PMBus */
+ TI_LM25066A_READ_VOUT = 16, /* R 2 PMBus */
+ TI_LM25066A_READ_TEMPERATURE_1 = 17, /* R 2 PMBus */
+ TI_LM25066A_MFR_ID = 18, /* R 3 PMBus */
+ TI_LM25066A_MFR_MODEL = 19, /* R 8 PMBus */
+ TI_LM25066A_MFR_REVISION = 20, /* R 2 PMBus */
+ TI_LM25066A_MFR_READ_VAUX = 21, /* R 2 MFR_SPECIFIC_00 */
+ TI_LM25066A_MFR_READ_IIN = 22, /* R 2 MFR_SPECIFIC_01 */
+ TI_LM25066A_MFR_READ_PIN = 23, /* R 2 MFR_SPECIFIC_02 */
+ TI_LM25066A_MFR_IIN_OC_WARN_LIMIT = 24, /* RW 2 MFR_SPECIFIC_03 */
+ TI_LM25066A_MFR_PIN_OP_WARN_LIMIT = 25, /* RW 2 MFR_SPECIFIC_04 */
+ TI_LM25066A_MFR_PIN_PEAK = 26, /* R 2 MFR_SPECIFIC_05 */
+ TI_LM25066A_MFR_CLEAR_PIN_PEAK = 27, /* W 0 MFR_SPECIFIC_06 */
+ TI_LM25066A_MFR_GATE_MASK = 28, /* RW 1 MFR_SPECIFIC_07 */
+ TI_LM25066A_MFR_ALERT_MASK = 29, /* RW 2 MFR_SPECIFIC_08 */
+ TI_LM25066A_MFR_DEVICE_SETUP = 30, /* RW 1 MFR_SPECIFIC_09 */
+ TI_LM25066A_MFR_BLOCK_READ = 31, /* R 12 MFR_SPECIFIC_10 */
+ TI_LM25066A_MFR_SAMPLES_FOR_AVG = 32, /* RW 1 MFR_SPECIFIC_11 */
+ TI_LM25066A_MFR_READ_AVG_VIN = 33, /* R 2 MFR_SPECIFIC_12 */
+ TI_LM25066A_MFR_READ_AVG_VOUT = 34, /* R 2 MFR_SPECIFIC_13 */
+ TI_LM25066A_MFR_READ_AVG_IIN = 35, /* R 2 MFR_SPECIFIC_14 */
+ TI_LM25066A_MFR_READ_AVG_PIN = 36, /* R 2 MFR_SPECIFIC_15 */
+ TI_LM25066A_MFR_BLACK_BOX_READ = 37, /* R 12 MFR_SPECIFIC_16 */
+ TI_LM25066A_MFR_DIAGNOSTIC_WORD_READ = 38, /* R 2 MFR_SPECIFIC_17 */
+ TI_LM25066A_MFR_AVG_BLOCK_READ = 39, /* R 12 MFR_SPECIFIC_18 */
+} ti_lm25066a_cmd;
+
+/*
+ * Real world converters. Page 46 of the datasheet discusses reading and
+ * writing telemtry data and obtaining the real world values. There are 8
+ * separate conversions using the same formula.
+ *
+ * The formula is:
+ *
+ * 1 -R
+ * X = - (Y x 10 - b)
+ * m
+ *
+ * X: the calculated "real world" value (volts, amps, watt, etc.)
+ * m: the slope coefficient
+ * Y: a two byte two's complement integer received from device
+ * b: the offset, a two byte two's complement integer
+ * R: the exponent, a one byte two's complement integer
+ *
+ * R in the table is inverted because we cannot store 0.01 in an int. This
+ * makes the equation:
+ *
+ * 1 Y
+ * X = - (- - b)
+ * m R
+ *
+ * The R value lets the integer result have decimal places.
+ *
+ * There are 8 conversion table entries listed in Table 41 of the
+ * data sheet. They are:
+ *
+ * 1. READ_VIN, READ_AVG_VIN, VIN_OV_WARN_LIMIT, VIN_UV_WARN_LIMIT
+ * 2. READ_VOUT, READ_AVG_VOUT, VOUT_UV_WARN_LIMIT
+ * 3. READ_VAUX
+ * 4.GND READ_IIN, READ_AVG_IIN, MFR_IIN_OC_WARN_LIMIT
+ * 4.VDD READ_IIN, READ_AVG_IIN, MFR_IIN_OC_WARN_LIMIT
+ * 5.GND READ_PIN, READ_AVG_PIN, READ_PIN_PEAK, MFR_PIN_OP_WARN_LIMIT
+ * 5.VCC READ_PIN, READ_AVG_PIN, READ_PIN_PEAK, MFR_PIN_OP_WARN_LIMIT
+ * 6. READ_TEMPERATURE_1, OT_WARN_LIMIT, OT_FAULT_LIMIT
+ *
+ * You need to provide 6 sets of conversion factors. Row 4 and 5 depend on how
+ * the device is wired. The driver will use the matching table row to convert
+ * the 2-complement 12 bit to a real world value.
+ */
+#define TI_LM25066A_CONVERSION_SIZE (6)
+typedef struct
+{
+ int m; /* The slope coefficient */
+ int b; /* The offset */
+ int R; /* The inverted power of 10 of -R */
+} ti_lm25066a_conversion;
+
+/*
+ * IO control interface.
+ */
+#define TI_LM25066A_GET (I2C_DEV_IO_CONTROL + 0)
+#define TI_LM25066A_SET (I2C_DEV_IO_CONTROL + 1)
+
+/*
+ * IO data types.
+ */
+typedef enum
+{
+ TI_LM25066A_8BIT = 0,
+ TI_LM25066A_16BIT = 1,
+ TI_LM25066A_VALUE = 2,
+ TI_LM25066A_VALUES = 3,
+ TI_LM25066A_STRING = 4,
+ TI_LM25066A_RAW = 5
+} ti_lm25066a_data;
+
+/*
+ * Struct to move data into and out of the driver.
+ */
+typedef struct
+{
+ ti_lm25066a_cmd cmd;
+ ti_lm25066a_data type;
+ union {
+ uint8_t u8;
+ uint16_t u16;
+ int value;
+ int values[6];
+ char string[9];
+ uint8_t* raw;
+ } data;
+} ti_lm25066a_io;
+
+/*
+ * Register the device.
+ *
+ * The conversions table has 6 columns.
+ *
+ * The values are an integer so the decimal_point value scales the value so it
+ * can fit in an integer with the required number of decimal points.
+ */
+int i2c_dev_register_ti_lm25066a(const char* bus_path,
+ const char* dev_path,
+ uint16_t address,
+ const ti_lm25066a_conversion* const conversions,
+ const int decimal_points);
+
+/*
+ * Get.
+ */
+static inline int
+ti_lm25066a_get(int fd, ti_lm25066a_io* io)
+{
+ return ioctl(fd, TI_LM25066A_GET, io);
+}
+
+/*
+ * Set.
+ */
+static inline int
+ti_lm25066a_set(int fd, ti_lm25066a_io* io)
+{
+ return ioctl(fd, TI_LM25066A_SET, io);
+}
+
+
+#endif
diff --git a/cpukit/dev/include/dev/i2c/ti-tmp112.h b/cpukit/dev/include/dev/i2c/ti-tmp112.h
new file mode 100644
index 0000000..58efbef
--- /dev/null
+++ b/cpukit/dev/include/dev/i2c/ti-tmp112.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2016-2017 Chris Johns <chrisj at rtems.org>
+ * All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * TI TMP112
+ * http://www.ti.com/product/TMP112
+ */
+
+#ifndef TI_TMP112_H
+#define TI_TMP112_H
+
+#include <dev/i2c/i2c.h>
+
+/*
+ * Confirguration.
+ */
+#define TI_TMP112_CR_0_25Hz (0 << 6)
+#define TI_TMP112_CR_1Hz (1 << 6)
+#define TI_TMP112_CR_4Hz (2 << 6) /* default */
+#define TI_TMP112_CR_8Hz (3 << 6)
+#define TI_TMP112_EM_NORMAL (0 << 4) /* default */
+#define TI_TMP112_EM_EXTENDED (1 << 4)
+#define TI_TMP112_SD_ON (0 << 8) /* default */
+#define TI_TMP112_SD_SHUTDOWN (1 << 8)
+#define TI_TMP112_TM_COMPARATOR (0 << 9) /* default */
+#define TI_TMP112_TM_INTERRUPT (1 << 9)
+#define TI_TMP112_POL_ALERT_LOW (0 << 10) /* default */
+#define TI_TMP112_POL_ALERT_HIGH (1 << 10)
+#define TI_TMP112_FQL_1 (0 << 11) /* default */
+#define TI_TMP112_FQL_2 (1 << 11)
+#define TI_TMP112_FQL_4 (2 << 11)
+#define TI_TMP112_FQL_6 (3 << 11)
+
+/*
+ * IO control interface.
+ */
+#define TI_TMP112_GET_TEMP (I2C_DEV_IO_CONTROL + 0)
+#define TI_TMP112_GET_TEMP_RAW (I2C_DEV_IO_CONTROL + 1)
+#define TI_TMP112_SET_CONFIG (I2C_DEV_IO_CONTROL + 2)
+#define TI_TMP112_SET_LOW_TEMP (I2C_DEV_IO_CONTROL + 3)
+#define TI_TMP112_SET_HIGH_TEMP (I2C_DEV_IO_CONTROL + 4)
+
+/*
+ * Register the device.
+ */
+int i2c_dev_register_ti_tmp112(const char* bus_path,
+ const char* dev_path,
+ uint16_t address);
+
+/*
+ * Get the temperature in degrees C x 10000. To print you would so:
+ *
+ * printf("Temperature is %3d.%04d\n", temp / 10000, temp % 10000);
+ *
+ * If the device is shutdown a single conversion is made waiting for the
+ * conversion to complete.
+ */
+static inline int
+ti_tmp112_get_temperature(int fd, int* temp)
+{
+ return ioctl(fd, TI_TMP112_GET_TEMP, temp);
+}
+
+/*
+ * Get the temperature as the raw register value.
+ *
+ * If the device is shutdown a single conversion is made waiting for the
+ * conversion to complete.
+ */
+static inline int
+ti_tmp112_get_temperature_raw(int fd, unsigned int* temp)
+{
+ return ioctl(fd, TI_TMP112_GET_TEMP_RAW, temp);
+}
+
+/*
+ * Set the configuration.
+ */
+static inline int
+ti_tmp112_adc_set_mux(int fd, uint16_t config)
+{
+ return ioctl(fd, TI_TMP112_SET_CONFIG, (void *)(uintptr_t) config);
+}
+
+/*
+ * Set the low temperature.
+ */
+static inline int
+ti_tmp112_set_low_temperator(int fd, uint16_t temp)
+{
+ return ioctl(fd, TI_TMP112_SET_LOW_TEMP, (void *)(uintptr_t) temp);
+}
+
+/*
+ * Set the high temperature.
+ */
+static inline int
+ti_tmp112_adc_set_high_threshold(int fd, uint16_t level)
+{
+ return ioctl(fd, TI_TMP112_SET_HIGH_TEMP, (void *)(uintptr_t) level);
+}
+
+#endif
diff --git a/cpukit/dev/preinstall.am b/cpukit/dev/preinstall.am
index d86719a..fd35488 100644
--- a/cpukit/dev/preinstall.am
+++ b/cpukit/dev/preinstall.am
@@ -27,6 +27,10 @@ $(PROJECT_INCLUDE)/dev/i2c/eeprom.h: include/dev/i2c/eeprom.h $(PROJECT_INCLUDE)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/eeprom.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/eeprom.h
+$(PROJECT_INCLUDE)/dev/i2c/fpga-i2c-slave.h: include/dev/i2c/fpga-i2c-slave.h $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/fpga-i2c-slave.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/fpga-i2c-slave.h
+
$(PROJECT_INCLUDE)/dev/i2c/gpio-nxp-pca9535.h: include/dev/i2c/gpio-nxp-pca9535.h $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/gpio-nxp-pca9535.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/gpio-nxp-pca9535.h
@@ -43,6 +47,18 @@ $(PROJECT_INCLUDE)/dev/i2c/xilinx-axi-i2c.h: include/dev/i2c/xilinx-axi-i2c.h $(
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/xilinx-axi-i2c.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/xilinx-axi-i2c.h
+$(PROJECT_INCLUDE)/dev/i2c/ti-ads-16bit-adc.h: include/dev/i2c/ti-ads-16bit-adc.h $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/ti-ads-16bit-adc.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/ti-ads-16bit-adc.h
+
+$(PROJECT_INCLUDE)/dev/i2c/ti-lm25066a.h: include/dev/i2c/ti-lm25066a.h $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/ti-lm25066a.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/ti-lm25066a.h
+
+$(PROJECT_INCLUDE)/dev/i2c/ti-tmp112.h: include/dev/i2c/ti-tmp112.h $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/ti-tmp112.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/ti-tmp112.h
+
$(PROJECT_INCLUDE)/dev/spi/$(dirstamp):
@$(MKDIR_P) $(PROJECT_INCLUDE)/dev/spi
@: > $(PROJECT_INCLUDE)/dev/spi/$(dirstamp)
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