[PATCH 2/9] Add I2C driver framework
Alan Cudmore
alan.cudmore at gmail.com
Thu Nov 13 17:35:49 UTC 2014
Hi Sebastian,
This sounds like a nice improvement. Is this intended to be a replacement
for the RTEMS libi2c?
Are any updates to existing i2c drivers or code required?
Alan
On Thu, Nov 13, 2014 at 4:30 AM, Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:
> This I2C driver framework has some major differences compared to libi2c.
>
> * It is compatible to the Linux I2C user-space API.
>
> * It uses generic IMFS nodes and thus reduces the levels of indirection.
>
> * The drivers don't have to mess around with minor numbers to get their
> state information.
>
> * No arbitrary bus controller model is assumed. The main task of a I2C
> bus controller driver is to process I2C messages. How this is done is
> private to the driver.
>
> * Scatter/gather operations are supported.
> ---
> cpukit/dev/Makefile.am | 11 +
> cpukit/dev/i2c/i2c-bus.c | 337 ++++++++++++++++++++++++++
> cpukit/dev/i2c/i2c-dev.c | 291 +++++++++++++++++++++++
> cpukit/dev/include/dev/i2c/i2c.h | 430
> ++++++++++++++++++++++++++++++++++
> cpukit/dev/preinstall.am | 9 +
> cpukit/wrapup/Makefile.am | 1 +
> testsuites/libtests/Makefile.am | 1 +
> testsuites/libtests/configure.ac | 1 +
> testsuites/libtests/i2c01/Makefile.am | 19 ++
> testsuites/libtests/i2c01/i2c01.doc | 11 +
> testsuites/libtests/i2c01/i2c01.scn | 2 +
> testsuites/libtests/i2c01/init.c | 286 ++++++++++++++++++++++
> 12 files changed, 1399 insertions(+)
> create mode 100644 cpukit/dev/i2c/i2c-bus.c
> create mode 100644 cpukit/dev/i2c/i2c-dev.c
> create mode 100644 cpukit/dev/include/dev/i2c/i2c.h
> create mode 100644 testsuites/libtests/i2c01/Makefile.am
> create mode 100644 testsuites/libtests/i2c01/i2c01.doc
> create mode 100644 testsuites/libtests/i2c01/i2c01.scn
> create mode 100644 testsuites/libtests/i2c01/init.c
>
> diff --git a/cpukit/dev/Makefile.am b/cpukit/dev/Makefile.am
> index 5f8fee6..c2913a6 100644
> --- a/cpukit/dev/Makefile.am
> +++ b/cpukit/dev/Makefile.am
> @@ -1,12 +1,23 @@
> include $(top_srcdir)/automake/compile.am
> +include $(top_srcdir)/automake/multilib.am
>
> include_devdir = $(includedir)/dev
> include_dev_HEADERS =
>
> +include_dev_i2cdir = $(includedir)/dev/i2c
> +include_dev_i2c_HEADERS =
> +include_dev_i2c_HEADERS += include/dev/i2c/i2c.h
> +
> include_linuxdir = $(includedir)/linux
> include_linux_HEADERS =
> include_linux_HEADERS += include/linux/i2c.h
> include_linux_HEADERS += include/linux/i2c-dev.h
>
> +noinst_LIBRARIES = libdev.a
> +
> +libdev_a_SOURCES =
> +libdev_a_SOURCES += i2c/i2c-bus.c
> +libdev_a_SOURCES += i2c/i2c-dev.c
> +
> include $(srcdir)/preinstall.am
> include $(top_srcdir)/automake/local.am
> diff --git a/cpukit/dev/i2c/i2c-bus.c b/cpukit/dev/i2c/i2c-bus.c
> new file mode 100644
> index 0000000..5ab185d
> --- /dev/null
> +++ b/cpukit/dev/i2c/i2c-bus.c
> @@ -0,0 +1,337 @@
> +/**
> + * @file
> + *
> + * @brief Inter-Integrated Circuit (I2C) Bus Implementation
> + *
> + * @ingroup I2CBus
> + */
> +
> +/*
> + * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
> + *
> + * embedded brains GmbH
> + * Dornierstr. 4
> + * 82178 Puchheim
> + * Germany
> + * <rtems at embedded-brains.de>
> + *
> + * 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 <dev/i2c/i2c.h>
> +
> +#include <rtems/imfs.h>
> +
> +#include <stdlib.h>
> +#include <string.h>
> +
> +void i2c_bus_obtain(i2c_bus *bus)
> +{
> + rtems_status_code sc;
> +
> + sc = rtems_semaphore_obtain(bus->mutex, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
> + _Assert(sc == RTEMS_SUCCESSFUL);
> + (void) sc;
> +}
> +
> +void i2c_bus_release(i2c_bus *bus)
> +{
> + rtems_status_code sc;
> +
> + sc = rtems_semaphore_release(bus->mutex);
> + _Assert(sc == RTEMS_SUCCESSFUL);
> + (void) sc;
> +}
> +
> +int i2c_bus_transfer(i2c_bus *bus, i2c_msg *msgs, uint32_t msg_count)
> +{
> + int err;
> +
> + _Assert(msg_count > 0);
> +
> + i2c_bus_obtain(bus);
> + err = (*bus->transfer)(bus, msgs, msg_count);
> + i2c_bus_release(bus);
> +
> + return err;
> +}
> +
> +static ssize_t i2c_bus_read(
> + rtems_libio_t *iop,
> + void *buffer,
> + size_t count
> +)
> +{
> + i2c_bus *bus = IMFS_generic_get_context_by_iop(iop);
> + i2c_msg msg = {
> + .addr = bus->default_address,
> + .flags = I2C_M_RD,
> + .len = (uint16_t) count,
> + .buf = buffer
> + };
> + int err;
> +
> + if (bus->ten_bit_address) {
> + msg.flags |= I2C_M_TEN;
> + }
> +
> + err = i2c_bus_transfer(bus, &msg, 1);
> + if (err == 0) {
> + return msg.len;
> + } else {
> + rtems_set_errno_and_return_minus_one(-err);
> + }
> +}
> +
> +static ssize_t i2c_bus_write(
> + rtems_libio_t *iop,
> + const void *buffer,
> + size_t count
> +)
> +{
> + i2c_bus *bus = IMFS_generic_get_context_by_iop(iop);
> + i2c_msg msg = {
> + .addr = bus->default_address,
> + .flags = 0,
> + .len = (uint16_t) count,
> + .buf = RTEMS_DECONST(void *, buffer)
> + };
> + int err;
> +
> + if (bus->ten_bit_address) {
> + msg.flags |= I2C_M_TEN;
> + }
> +
> + err = i2c_bus_transfer(bus, &msg, 1);
> + if (err == 0) {
> + return msg.len;
> + } else {
> + rtems_set_errno_and_return_minus_one(-err);
> + }
> +}
> +
> +static int i2c_bus_ioctl(
> + rtems_libio_t *iop,
> + ioctl_command_t command,
> + void *arg
> +)
> +{
> + i2c_bus *bus = IMFS_generic_get_context_by_iop(iop);
> + i2c_rdwr_ioctl_data *rdwr;
> + int err;
> +
> + i2c_bus_obtain(bus);
> +
> + switch (command) {
> + case I2C_RDWR:
> + rdwr = arg;
> + if (rdwr->nmsgs > 0) {
> + err = i2c_bus_transfer(bus, rdwr->msgs, rdwr->nmsgs);
> + } else {
> + err = 0;
> + }
> + break;
> + case I2C_BUS_OBTAIN:
> + i2c_bus_obtain(bus);
> + err = 0;
> + break;
> + case I2C_BUS_RELEASE:
> + i2c_bus_release(bus);
> + err = 0;
> + break;
> + case I2C_BUS_GET_CONTROL:
> + *(i2c_bus **) arg = bus;
> + err = 0;
> + break;
> + case I2C_FUNCS:
> + *(unsigned long *) arg = bus->functionality;
> + err = 0;
> + break;
> + case I2C_RETRIES:
> + bus->retries = (unsigned long) arg;
> + err = 0;
> + break;
> + case I2C_TIMEOUT:
> + bus->timeout = RTEMS_MILLISECONDS_TO_TICKS(10 * (unsigned long)
> arg);
> + err = 0;
> + break;
> + case I2C_SLAVE:
> + case I2C_SLAVE_FORCE:
> + bus->default_address = (unsigned long) arg;
> + err = 0;
> + break;
> + case I2C_TENBIT:
> + bus->ten_bit_address = (unsigned long) arg != 0;
> + err = 0;
> + break;
> + case I2C_PEC:
> + bus->use_pec = (unsigned long) arg != 0;
> + err = 0;
> + break;
> + case I2C_BUS_SET_CLOCK:
> + err = (*bus->set_clock)(bus, (unsigned long) arg);
> + break;
> + default:
> + err = -ENOTTY;
> + break;
> + }
> +
> + i2c_bus_release(bus);
> +
> + if (err == 0) {
> + return 0;
> + } else {
> + rtems_set_errno_and_return_minus_one(-err);
> + }
> +}
> +
> +static const rtems_filesystem_file_handlers_r i2c_bus_handler = {
> + .open_h = rtems_filesystem_default_open,
> + .close_h = rtems_filesystem_default_close,
> + .read_h = i2c_bus_read,
> + .write_h = i2c_bus_write,
> + .ioctl_h = i2c_bus_ioctl,
> + .lseek_h = rtems_filesystem_default_lseek,
> + .fstat_h = IMFS_stat,
> + .ftruncate_h = rtems_filesystem_default_ftruncate,
> + .fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
> + .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
> + .fcntl_h = rtems_filesystem_default_fcntl,
> + .kqfilter_h = rtems_filesystem_default_kqfilter,
> + .poll_h = rtems_filesystem_default_poll,
> + .readv_h = rtems_filesystem_default_readv,
> + .writev_h = rtems_filesystem_default_writev
> +};
> +
> +static IMFS_jnode_t *i2c_bus_node_destroy(IMFS_jnode_t *node)
> +{
> + i2c_bus *bus;
> +
> + bus = IMFS_generic_get_context_by_node(node);
> + (*bus->destroy)(bus);
> +
> + return node;
> +}
> +
> +static const IMFS_node_control i2c_bus_node_control = {
> + .imfs_type = IMFS_GENERIC,
> + .handlers = &i2c_bus_handler,
> + .node_initialize = IMFS_node_initialize_generic,
> + .node_remove = IMFS_node_remove_default,
> + .node_destroy = i2c_bus_node_destroy
> +};
> +
> +int i2c_bus_register(
> + i2c_bus *bus,
> + const char *bus_path
> +)
> +{
> + int rv;
> +
> + rv = IMFS_make_generic_node(
> + bus_path,
> + S_IFCHR | S_IRWXU | S_IRWXG | S_IRWXO,
> + &i2c_bus_node_control,
> + bus
> + );
> + if (rv != 0) {
> + (*bus->destroy)(bus);
> + }
> +
> + return rv;
> +}
> +
> +static int i2c_bus_transfer_default(
> + i2c_bus *bus,
> + i2c_msg *msgs,
> + uint32_t msg_count
> +)
> +{
> + (void) bus;
> + (void) msgs;
> + (void) msg_count;
> +
> + return -EIO;
> +}
> +
> +static int i2c_bus_set_clock_default(i2c_bus *bus, unsigned long clock)
> +{
> + (void) bus;
> + (void) clock;
> +
> + return -EIO;
> +}
> +
> +static int i2c_bus_do_init(
> + i2c_bus *bus,
> + void (*destroy)(i2c_bus *bus)
> +)
> +{
> + rtems_status_code sc;
> +
> + sc = rtems_semaphore_create(
> + rtems_build_name('I', '2', 'C', ' '),
> + 1,
> + RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
> + 0,
> + &bus->mutex
> + );
> + if (sc != RTEMS_SUCCESSFUL) {
> + (*destroy)(bus);
> +
> + rtems_set_errno_and_return_minus_one(ENOMEM);
> + }
> +
> + bus->transfer = i2c_bus_transfer_default;
> + bus->set_clock = i2c_bus_set_clock_default;
> + bus->destroy = destroy;
> +
> + return 0;
> +}
> +
> +void i2c_bus_destroy(i2c_bus *bus)
> +{
> + rtems_status_code sc;
> +
> + sc = rtems_semaphore_delete(bus->mutex);
> + _Assert(sc == RTEMS_SUCCESSFUL);
> + (void) sc;
> +}
> +
> +void i2c_bus_destroy_and_free(i2c_bus *bus)
> +{
> + i2c_bus_destroy(bus);
> + free(bus);
> +}
> +
> +int i2c_bus_init(i2c_bus *bus)
> +{
> + memset(bus, 0, sizeof(*bus));
> +
> + return i2c_bus_do_init(bus, i2c_bus_destroy);
> +}
> +
> +i2c_bus *i2c_bus_alloc_and_init(size_t size)
> +{
> + i2c_bus *bus = NULL;
> +
> + if (size >= sizeof(*bus)) {
> + bus = calloc(1, size);
> + if (bus != NULL) {
> + int rv;
> +
> + rv = i2c_bus_do_init(bus, i2c_bus_destroy_and_free);
> + if (rv != 0) {
> + return NULL;
> + }
> + }
> + }
> +
> + return bus;
> +}
> diff --git a/cpukit/dev/i2c/i2c-dev.c b/cpukit/dev/i2c/i2c-dev.c
> new file mode 100644
> index 0000000..b03effd
> --- /dev/null
> +++ b/cpukit/dev/i2c/i2c-dev.c
> @@ -0,0 +1,291 @@
> +/**
> + * @file
> + *
> + * @brief Inter-Integrated Circuit (I2C) Bus Implementation
> + *
> + * @ingroup I2CDevice
> + */
> +
> +/*
> + * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
> + *
> + * embedded brains GmbH
> + * Dornierstr. 4
> + * 82178 Puchheim
> + * Germany
> + * <rtems at embedded-brains.de>
> + *
> + * 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 <dev/i2c/i2c.h>
> +
> +#include <rtems/imfs.h>
> +#include <rtems/score/assert.h>
> +
> +#include <fcntl.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +
> +static ssize_t i2c_dev_read(
> + rtems_libio_t *iop,
> + void *buffer,
> + size_t count
> +)
> +{
> + i2c_dev *dev = IMFS_generic_get_context_by_iop(iop);
> + ssize_t n;
> +
> + n = (*dev->read)(dev, buffer, count, iop->offset);
> + if (n > 0) {
> + iop->offset += n;
> + }
> +
> + return n;
> +}
> +
> +static ssize_t i2c_dev_write(
> + rtems_libio_t *iop,
> + const void *buffer,
> + size_t count
> +)
> +{
> + i2c_dev *dev = IMFS_generic_get_context_by_iop(iop);
> + ssize_t n;
> +
> + n = (*dev->write)(dev, buffer, count, iop->offset);
> + if (n > 0) {
> + iop->offset += n;
> + }
> +
> + return n;
> +}
> +
> +static int i2c_dev_ioctl(
> + rtems_libio_t *iop,
> + ioctl_command_t command,
> + void *arg
> +)
> +{
> + i2c_dev *dev = IMFS_generic_get_context_by_iop(iop);
> + int err;
> +
> + err = (*dev->ioctl)(dev, command, arg);
> +
> + if (err == 0) {
> + return 0;
> + } else {
> + rtems_set_errno_and_return_minus_one(-err);
> + }
> +}
> +
> +static int i2c_dev_fstat(
> + const rtems_filesystem_location_info_t *loc,
> + struct stat *buf
> +)
> +{
> + i2c_dev *dev = IMFS_generic_get_context_by_location(loc);
> +
> + buf->st_size = (*dev->get_size)(dev);
> + buf->st_blksize = (*dev->get_block_size)(dev);
> +
> + return IMFS_stat(loc, buf);
> +}
> +
> +static const rtems_filesystem_file_handlers_r i2c_dev_handler = {
> + .open_h = rtems_filesystem_default_open,
> + .close_h = rtems_filesystem_default_close,
> + .read_h = i2c_dev_read,
> + .write_h = i2c_dev_write,
> + .ioctl_h = i2c_dev_ioctl,
> + .lseek_h = rtems_filesystem_default_lseek_file,
> + .fstat_h = i2c_dev_fstat,
> + .ftruncate_h = rtems_filesystem_default_ftruncate,
> + .fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
> + .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
> + .fcntl_h = rtems_filesystem_default_fcntl,
> + .kqfilter_h = rtems_filesystem_default_kqfilter,
> + .poll_h = rtems_filesystem_default_poll,
> + .readv_h = rtems_filesystem_default_readv,
> + .writev_h = rtems_filesystem_default_writev
> +};
> +
> +static IMFS_jnode_t *i2c_dev_node_destroy(IMFS_jnode_t *node)
> +{
> + i2c_dev *dev;
> +
> + dev = IMFS_generic_get_context_by_node(node);
> + (*dev->destroy)(dev);
> +
> + return node;
> +}
> +
> +static const IMFS_node_control i2c_dev_node_control = {
> + .imfs_type = IMFS_GENERIC,
> + .handlers = &i2c_dev_handler,
> + .node_initialize = IMFS_node_initialize_generic,
> + .node_remove = IMFS_node_remove_default,
> + .node_destroy = i2c_dev_node_destroy
> +};
> +
> +int i2c_dev_register(
> + i2c_dev *dev,
> + const char *dev_path
> +)
> +{
> + int rv;
> +
> + rv = IMFS_make_generic_node(
> + dev_path,
> + S_IFCHR | S_IRWXU | S_IRWXG | S_IRWXO,
> + &i2c_dev_node_control,
> + dev
> + );
> + if (rv != 0) {
> + (*dev->destroy)(dev);
> + }
> +
> + return rv;
> +}
> +
> +static ssize_t i2c_dev_read_default(
> + i2c_dev *dev,
> + void *buf,
> + size_t n,
> + off_t offset
> +)
> +{
> + (void) dev;
> + (void) buf;
> + (void) n;
> + (void) offset;
> +
> + return -EIO;
> +}
> +
> +static ssize_t i2c_dev_write_default(
> + i2c_dev *dev,
> + const void *buf,
> + size_t n,
> + off_t offset
> +)
> +{
> + (void) dev;
> + (void) buf;
> + (void) n;
> + (void) offset;
> +
> + return -EIO;
> +}
> +
> +static int i2c_dev_ioctl_default(
> + i2c_dev *dev,
> + ioctl_command_t command,
> + void *arg
> +)
> +{
> + (void) dev;
> + (void) command;
> + (void) arg;
> +
> + return -ENOTTY;
> +}
> +
> +static off_t i2c_dev_get_size_default(i2c_dev *dev)
> +{
> + (void) dev;
> +
> + return 0;
> +}
> +
> +static blksize_t i2c_dev_get_block_size_default(i2c_dev *dev)
> +{
> + (void) dev;
> +
> + return 1;
> +}
> +
> +static int i2c_dev_do_init(
> + i2c_dev *dev,
> + const char *bus_path,
> + uint16_t address,
> + void (*destroy)(i2c_dev *dev)
> +)
> +{
> + int fd;
> + int rv;
> +
> + fd = open(bus_path, O_RDWR);
> + if (fd < 0) {
> + (*destroy)(dev);
> +
> + return -1;
> + }
> +
> + rv = ioctl(fd, I2C_BUS_GET_CONTROL, &dev->bus);
> + if (rv != 0) {
> + (*destroy)(dev);
> +
> + return -1;
> + }
> +
> + dev->read = i2c_dev_read_default;
> + dev->write = i2c_dev_write_default;
> + dev->ioctl = i2c_dev_ioctl_default;
> + dev->get_size = i2c_dev_get_size_default;
> + dev->get_block_size = i2c_dev_get_block_size_default;
> + dev->destroy = destroy;
> + dev->bus_fd = fd;
> + dev->address = address;
> +
> + return 0;
> +}
> +
> +void i2c_dev_destroy(i2c_dev *dev)
> +{
> + int rv;
> +
> + rv = close(dev->bus_fd);
> + _Assert(rv == 0);
> + (void) rv;
> +}
> +
> +void i2c_dev_destroy_and_free(i2c_dev *dev)
> +{
> + i2c_dev_destroy(dev);
> + free(dev);
> +}
> +
> +int i2c_dev_init(i2c_dev *dev, const char *bus_path, uint16_t address)
> +{
> + return i2c_dev_do_init(dev, bus_path, address, i2c_dev_destroy);
> +}
> +
> +i2c_dev *i2c_dev_alloc_and_init(
> + size_t size,
> + const char *bus_path,
> + uint16_t address
> +)
> +{
> + i2c_dev *dev = NULL;
> +
> + if (size >= sizeof(*dev)) {
> + dev = calloc(1, size);
> + if (dev != NULL) {
> + int rv;
> +
> + rv = i2c_dev_do_init(dev, bus_path, address,
> i2c_dev_destroy_and_free);
> + if (rv != 0) {
> + return NULL;
> + }
> + }
> + }
> +
> + return dev;
> +}
> diff --git a/cpukit/dev/include/dev/i2c/i2c.h
> b/cpukit/dev/include/dev/i2c/i2c.h
> new file mode 100644
> index 0000000..f73cc9a
> --- /dev/null
> +++ b/cpukit/dev/include/dev/i2c/i2c.h
> @@ -0,0 +1,430 @@
> +/**
> + * @file
> + *
> + * @brief Inter-Integrated Circuit (I2C) Driver API
> + *
> + * @ingroup I2C
> + */
> +
> +/*
> + * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
> + *
> + * embedded brains GmbH
> + * Dornierstr. 4
> + * 82178 Puchheim
> + * Germany
> + * <rtems at embedded-brains.de>
> + *
> + * 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.
> + */
> +
> +#ifndef _DEV_I2C_I2C_H
> +#define _DEV_I2C_I2C_H
> +
> +#include <linux/i2c.h>
> +#include <linux/i2c-dev.h>
> +
> +#include <rtems.h>
> +#include <rtems/seterr.h>
> +
> +#include <sys/ioctl.h>
> +#include <sys/stat.h>
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif /* __cplusplus */
> +
> +typedef struct i2c_msg i2c_msg;
> +
> +typedef struct i2c_bus i2c_bus;
> +
> +typedef struct i2c_dev i2c_dev;
> +
> +typedef struct i2c_rdwr_ioctl_data i2c_rdwr_ioctl_data;
> +
> +/**
> + * @defgroup I2C Inter-Integrated Circuit (I2C) Driver
> + *
> + * @brief Inter-Integrated Circuit (I2C) bus and device driver support.
> + *
> + * @{
> + */
> +
> +/**
> + * @defgroup I2CBus I2C Bus Driver
> + *
> + * @ingroup I2C
> + *
> + * @{
> + */
> +
> +/**
> + * @name I2C IO Control Commands
> + *
> + * @{
> + */
> +
> +/**
> + * @brief Obtains the bus.
> + *
> + * This command has no argument.
> + */
> +#define I2C_BUS_OBTAIN 0x800
> +
> +/**
> + * @brief Releases the bus.
> + *
> + * This command has no argument.
> + */
> +#define I2C_BUS_RELEASE 0x801
> +
> +/**
> + * @brief Gets the bus control.
> + *
> + * The argument type is a pointer to i2c_bus pointer.
> + */
> +#define I2C_BUS_GET_CONTROL 0x802
> +
> +/**
> + * @brief Sets the bus clock in Hz.
> + *
> + * The argument type is unsigned long.
> + */
> +#define I2C_BUS_SET_CLOCK 0x803
> +
> +/** @} */
> +
> +/**
> + * @brief Default I2C bus clock in Hz.
> + */
> +#define I2C_BUS_CLOCK_DEFAULT 100000
> +
> +/**
> + * @brief I2C bus control.
> + */
> +struct i2c_bus {
> + /**
> + * @brief Transfers I2C messages.
> + *
> + * @param[in] bus The bus control.
> + * @param[in] msgs The messages to transfer.
> + * @param[in] msg_count The count of messages to transfer. It must be
> + * positive.
> + *
> + * @retval 0 Successful operation.
> + * @retval negative Negative error number in case of an error.
> + */
> + int (*transfer)(i2c_bus *bus, i2c_msg *msgs, uint32_t msg_count);
> +
> + /**
> + * @brief Sets the bus clock.
> + *
> + * @param[in] bus The bus control.
> + * @param[in] clock The desired bus clock in Hz.
> + *
> + * @retval 0 Successful operation.
> + * @retval negative Negative error number in case of an error.
> + */
> + int (*set_clock)(i2c_bus *bus, unsigned long clock);
> +
> + /**
> + * @brief Destroys the bus.
> + *
> + * @param[in] bus The bus control.
> + */
> + void (*destroy)(i2c_bus *bus);
> +
> + /**
> + * @brief Mutex to protect the bus access.
> + */
> + rtems_id mutex;
> +
> + /**
> + * @brief Default slave device address.
> + */
> + uint16_t default_address;
> +
> + /**
> + * @brief Use 10-bit addresses.
> + */
> + bool ten_bit_address;
> +
> + /**
> + * @brief Use SMBus PEC.
> + */
> + bool use_pec;
> +
> + /**
> + * @brief Transfer retry count.
> + */
> + unsigned long retries;
> +
> + /**
> + * @brief Transaction timeout in ticks.
> + */
> + rtems_interval timeout;
> +
> + /**
> + * @brief Controller functionality.
> + */
> + unsigned long functionality;
> +};
> +
> +/**
> + * @brief Initializes a bus control.
> + *
> + * After a sucessful initialization the bus control must be destroyed via
> + * i2c_bus_destroy(). A registered bus control will be automatically
> destroyed
> + * in case the device file is unlinked. Make sure to call
> i2c_bus_destroy() in
> + * a custom destruction handler.
> + *
> + * @param[in] bus The bus control.
> + *
> + * @retval 0 Successful operation.
> + * @retval -1 An error occurred. The errno is set to indicate the error.
> + *
> + * @see i2c_bus_register()
> + */
> +int i2c_bus_init(i2c_bus *bus);
> +
> +/**
> + * @brief Allocates a bus control from the heap and initializes it.
> + *
> + * After a sucessful allocation and initialization the bus control must be
> + * destroyed via i2c_bus_destroy_and_free(). A registered bus control
> will be
> + * automatically destroyed in case the device file is unlinked. Make
> sure to
> + * call i2c_bus_destroy_and_free() in a custom destruction handler.
> + *
> + * @param[in] size The size of the bus control. This enables the
> addition of
> + * bus controller specific data to the base bus control. The bus control
> is
> + * zero initialized.
> + *
> + * @retval non-NULL The new bus control.
> + * @retval NULL An error occurred. The errno is set to indicate the
> error.
> + *
> + * @see i2c_bus_register()
> + */
> +i2c_bus *i2c_bus_alloc_and_init(size_t size);
> +
> +/**
> + * @brief Destroys a bus control.
> + *
> + * @param[in] bus The bus control.
> + */
> +void i2c_bus_destroy(i2c_bus *bus);
> +
> +/**
> + * @brief Destroys a bus control and frees its memory.
> + *
> + * @param[in] bus The bus control.
> + */
> +void i2c_bus_destroy_and_free(i2c_bus *bus);
> +
> +/**
> + * @brief Registers a bus control.
> + *
> + * This function claims ownership of the bus control regardless if the
> + * registration is successful or not.
> + *
> + * @param[in] bus The bus control.
> + * @param[in] bus_path The path to the bus device file.
> + *
> + * @retval 0 Successful operation.
> + * @retval -1 An error occurred. The errno is set to indicate the error.
> + */
> +int i2c_bus_register(
> + i2c_bus *bus,
> + const char *bus_path
> +);
> +
> +/**
> + * @brief Obtains the bus.
> + *
> + * @param[in] bus The bus control.
> + */
> +void i2c_bus_obtain(i2c_bus *bus);
> +
> +/**
> + * @brief Releases the bus.
> + *
> + * @param[in] bus The bus control.
> + */
> +void i2c_bus_release(i2c_bus *bus);
> +
> +/**
> + * @brief Transfers I2C messages.
> + *
> + * The bus is obtained before the transfer and released afterwards.
> + *
> + * @param[in] bus The bus control.
> + * @param[in] msgs The messages to transfer.
> + * @param[in] msg_count The count of messages to transfer. It must be
> + * positive.
> + *
> + * @retval 0 Successful operation.
> + * @retval negative Negative error number in case of an error.
> + */
> +int i2c_bus_transfer(i2c_bus *bus, i2c_msg *msgs, uint32_t msg_count);
> +
> +/** @} */
> +
> +/**
> + * @defgroup I2CDevice I2C Device Driver
> + *
> + * @ingroup I2C
> + *
> + * @{
> + */
> +
> +/**
> + * @brief Base number for device IO control commands.
> + */
> +#define I2C_DEVICE_IO_CONTROL 0x900
> +
> +/**
> + * @brief I2C slave device control.
> + */
> +struct i2c_dev {
> + /**
> + * @brief Reads from the device.
> + *
> + * @retval non-negative Bytes transferred from device.
> + * @retval negative Negative error number in case of an error.
> + */
> + ssize_t (*read)(i2c_dev *dev, void *buf, size_t n, off_t offset);
> +
> + /**
> + * @brief Writes to the device.
> + *
> + * @retval non-negative Bytes transferred to device.
> + * @retval negative Negative error number in case of an error.
> + */
> + ssize_t (*write)(i2c_dev *dev, const void *buf, size_t n, off_t offset);
> +
> + /**
> + * @brief Device IO control.
> + *
> + * @retval 0 Successful operation.
> + * @retval negative Negative error number in case of an error.
> + */
> + int (*ioctl)(i2c_dev *dev, ioctl_command_t command, void *arg);
> +
> + /**
> + * @brief Gets the file size.
> + */
> + off_t (*get_size)(i2c_dev *dev);
> +
> + /**
> + * @brief Gets the file block size.
> + */
> + blksize_t (*get_block_size)(i2c_dev *dev);
> +
> + /**
> + * @brief Destroys the device.
> + */
> + void (*destroy)(i2c_dev *dev);
> +
> + /**
> + * @brief The bus control.
> + */
> + i2c_bus *bus;
> +
> + /**
> + * @brief The device address.
> + */
> + uint16_t address;
> +
> + /**
> + * @brief File descriptor of the bus.
> + *
> + * This prevents destruction of the bus since we hold a reference to it
> with
> + * this.
> + */
> + int bus_fd;
> +};
> +
> +
> +/**
> + * @brief Initializes a device control.
> + *
> + * After a sucessful initialization the device control must be destroyed
> via
> + * i2c_dev_destroy(). A registered device control will be automatically
> + * destroyed in case the device file is unlinked. Make sure to call
> + * i2c_dev_destroy_and_free() in a custom destruction handler.
> + *
> + * @param[in] device The device control.
> + * @param[in] bus_path The path to the bus device file.
> + * @param[in] address The address of the device.
> + *
> + * @retval 0 Successful operation.
> + * @retval -1 An error occurred. The errno is set to indicate the error.
> + *
> + * @see i2c_dev_register()
> + */
> +int i2c_dev_init(i2c_dev *dev, const char *bus_path, uint16_t address);
> +
> +/**
> + * @brief Allocates a device control from the heap and initializes it.
> + *
> + * After a sucessful allocation and initialization the device control
> must be
> + * destroyed via i2c_dev_destroy_and_free(). A registered device control
> will
> + * be automatically destroyed in case the device file is unlinked. Make
> sure
> + * to call i2c_dev_destroy_and_free() in a custom destruction handler.
> + *
> + * @param[in] size The size of the device control. This enables the
> addition
> + * of device specific data to the base device control. The device
> control is
> + * zero initialized.
> + * @param[in] bus_path The path to the bus device file.
> + * @param[in] address The address of the device.
> + *
> + * @retval non-NULL The new device control.
> + * @retval NULL An error occurred. The errno is set to indicate the
> error.
> + *
> + * @see i2c_dev_register()
> + */
> +i2c_dev *i2c_dev_alloc_and_init(
> + size_t size,
> + const char *bus_path,
> + uint16_t address
> +);
> +
> +/**
> + * @brief Destroys a device control.
> + *
> + * @param[in] dev The device control.
> + */
> +void i2c_dev_destroy(i2c_dev *dev);
> +
> +/**
> + * @brief Destroys a device control and frees its memory.
> + *
> + * @param[in] dev The device control.
> + */
> +void i2c_dev_destroy_and_free(i2c_dev *dev);
> +
> +/**
> + * @brief Registers a device control.
> + *
> + * This function claims ownership of the device control regardless if the
> + * registration is successful or not.
> + *
> + * @param[in] dev The dev control.
> + * @param[in] dev_path The path to the device file of the device.
> + *
> + * @retval 0 Successful operation.
> + * @retval -1 An error occurred. The errno is set to indicate the error.
> + */
> +int i2c_dev_register(
> + i2c_dev *dev,
> + const char *dev_path
> +);
> +
> +/** @} */
> +
> +#ifdef __cplusplus
> +}
> +#endif /* __cplusplus */
> +
> +#endif /* _DEV_I2C_I2C_H */
> diff --git a/cpukit/dev/preinstall.am b/cpukit/dev/preinstall.am
> index a17d606..8239327 100644
> --- a/cpukit/dev/preinstall.am
> +++ b/cpukit/dev/preinstall.am
> @@ -18,6 +18,15 @@ $(PROJECT_INCLUDE)/dev/$(dirstamp):
> @: > $(PROJECT_INCLUDE)/dev/$(dirstamp)
> PREINSTALL_DIRS += $(PROJECT_INCLUDE)/dev/$(dirstamp)
>
> +$(PROJECT_INCLUDE)/dev/i2c/$(dirstamp):
> + @$(MKDIR_P) $(PROJECT_INCLUDE)/dev/i2c
> + @: > $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
> +PREINSTALL_DIRS += $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
> +
> +$(PROJECT_INCLUDE)/dev/i2c/i2c.h: include/dev/i2c/i2c.h
> $(PROJECT_INCLUDE)/dev/i2c/$(dirstamp)
> + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/dev/i2c/i2c.h
> +PREINSTALL_FILES += $(PROJECT_INCLUDE)/dev/i2c/i2c.h
> +
> $(PROJECT_INCLUDE)/linux/$(dirstamp):
> @$(MKDIR_P) $(PROJECT_INCLUDE)/linux
> @: > $(PROJECT_INCLUDE)/linux/$(dirstamp)
> diff --git a/cpukit/wrapup/Makefile.am b/cpukit/wrapup/Makefile.am
> index bf38cca..5dfe34b 100644
> --- a/cpukit/wrapup/Makefile.am
> +++ b/cpukit/wrapup/Makefile.am
> @@ -8,6 +8,7 @@ project_lib_LIBRARIES = librtemscpu.a
> librtemscpu_a_SOURCES =
>
> TMP_LIBS =
> +TMP_LIBS += ../dev/libdev.a
> TMP_LIBS += ../score/cpu/@RTEMS_CPU@/libscorecpu.a
> TMP_LIBS += ../score/libscore.a
> TMP_LIBS += ../sapi/libsapi.a
> diff --git a/testsuites/libtests/Makefile.am
> b/testsuites/libtests/Makefile.am
> index 26e11c6..bee6e75 100644
> --- a/testsuites/libtests/Makefile.am
> +++ b/testsuites/libtests/Makefile.am
> @@ -1,6 +1,7 @@
> ACLOCAL_AMFLAGS = -I ../aclocal
>
> _SUBDIRS = POSIX
> +_SUBDIRS += i2c01
> _SUBDIRS += newlib01
> _SUBDIRS += block17
> _SUBDIRS += exit02
> diff --git a/testsuites/libtests/configure.ac b/testsuites/libtests/
> configure.ac
> index 392e2a9..77a108b 100644
> --- a/testsuites/libtests/configure.ac
> +++ b/testsuites/libtests/configure.ac
> @@ -66,6 +66,7 @@ AS_IF([test x"$HAVE_LIBDL" = x"yes"],[
>
> # Explicitly list all Makefiles here
> AC_CONFIG_FILES([Makefile
> +i2c01/Makefile
> newlib01/Makefile
> block17/Makefile
> exit02/Makefile
> diff --git a/testsuites/libtests/i2c01/Makefile.am
> b/testsuites/libtests/i2c01/Makefile.am
> new file mode 100644
> index 0000000..f329337
> --- /dev/null
> +++ b/testsuites/libtests/i2c01/Makefile.am
> @@ -0,0 +1,19 @@
> +rtems_tests_PROGRAMS = i2c01
> +i2c01_SOURCES = init.c
> +
> +dist_rtems_tests_DATA = i2c01.scn i2c01.doc
> +
> +include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
> +include $(top_srcdir)/../automake/compile.am
> +include $(top_srcdir)/../automake/leaf.am
> +
> +AM_CPPFLAGS += -I$(top_srcdir)/../support/include
> +
> +LINK_OBJS = $(i2c01_OBJECTS)
> +LINK_LIBS = $(i2c01_LDLIBS)
> +
> +i2c01$(EXEEXT): $(i2c01_OBJECTS) $(i2c01_DEPENDENCIES)
> + @rm -f i2c01$(EXEEXT)
> + $(make-exe)
> +
> +include $(top_srcdir)/../automake/local.am
> diff --git a/testsuites/libtests/i2c01/i2c01.doc
> b/testsuites/libtests/i2c01/i2c01.doc
> new file mode 100644
> index 0000000..79185ee
> --- /dev/null
> +++ b/testsuites/libtests/i2c01/i2c01.doc
> @@ -0,0 +1,11 @@
> +This file describes the directives and concepts tested by this test set.
> +
> +test set name: i2c01
> +
> +directives:
> +
> + TBD
> +
> +concepts:
> +
> + - Ensure that the I2C driver framework works.
> diff --git a/testsuites/libtests/i2c01/i2c01.scn
> b/testsuites/libtests/i2c01/i2c01.scn
> new file mode 100644
> index 0000000..1b54497
> --- /dev/null
> +++ b/testsuites/libtests/i2c01/i2c01.scn
> @@ -0,0 +1,2 @@
> +*** BEGIN OF TEST I2C 1 ***
> +*** END OF TEST I2C 1 ***
> diff --git a/testsuites/libtests/i2c01/init.c
> b/testsuites/libtests/i2c01/init.c
> new file mode 100644
> index 0000000..7f38d34
> --- /dev/null
> +++ b/testsuites/libtests/i2c01/init.c
> @@ -0,0 +1,286 @@
> +/*
> + * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
> + *
> + * embedded brains GmbH
> + * Dornierstr. 4
> + * 82178 Puchheim
> + * Germany
> + * <rtems at embedded-brains.de>
> + *
> + * 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.
> + */
> +
> +#ifdef HAVE_CONFIG_H
> + #include "config.h"
> +#endif
> +
> +#include <dev/i2c/i2c.h>
> +
> +#include <sys/ioctl.h>
> +#include <sys/stat.h>
> +#include <errno.h>
> +#include <fcntl.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <unistd.h>
> +
> +#include <rtems/libcsupport.h>
> +
> +#include "tmacros.h"
> +
> +const char rtems_test_name[] = "I2C 1";
> +
> +#define SPARE_ADDRESS_BITS 3
> +
> +#define DEVICE_SIMPLE_READ_WRITE (0UL << SPARE_ADDRESS_BITS)
> +
> +typedef struct test_device test_device;
> +
> +struct test_device {
> + int (*transfer)(
> + i2c_bus *bus,
> + i2c_msg *msgs,
> + uint32_t msg_count,
> + test_device *dev
> + );
> +};
> +
> +typedef struct {
> + test_device base;
> + char buf[3];
> +} test_device_simple_read_write;
> +
> +typedef struct {
> + i2c_bus base;
> + unsigned long clock;
> + test_device *devices[1];
> + test_device_simple_read_write simple_read_write;
> +} test_bus;
> +
> +static const char bus_path[] = "/dev/i2c-0";
> +
> +static int test_simple_read_write_transfer(
> + i2c_bus *bus,
> + i2c_msg *msgs,
> + uint32_t msg_count,
> + test_device *base
> +)
> +{
> + test_device_simple_read_write *dev = (test_device_simple_read_write *)
> base;
> +
> + if (msg_count == 1 && msgs[0].len == sizeof(dev->buf)) {
> + if ((msgs[0].flags & I2C_M_RD) != 0) {
> + memcpy(msgs[0].buf, &dev->buf[0], sizeof(dev->buf));
> + } else {
> + memcpy(&dev->buf[0], msgs[0].buf, sizeof(dev->buf));
> + }
> +
> + return 0;
> + } else {
> + return -EIO;
> + }
> +}
> +
> +static int test_transfer(i2c_bus *base, i2c_msg *msgs, uint32_t msg_count)
> +{
> + test_bus *bus = (test_bus *) base;
> + uint16_t addr;
> + test_device *dev;
> +
> + addr = msgs[0].addr >> SPARE_ADDRESS_BITS;
> + if (addr >= RTEMS_ARRAY_SIZE(bus->devices)) {
> + return -EIO;
> + }
> +
> + dev = bus->devices[addr];
> +
> + return (*dev->transfer)(&bus->base, msgs, msg_count, dev);
> +}
> +
> +static int test_set_clock(i2c_bus *base, unsigned long clock)
> +{
> + test_bus *bus = (test_bus *) base;
> +
> + bus->clock = clock;
> +
> + return 0;
> +}
> +
> +static void test_destroy(i2c_bus *base)
> +{
> + i2c_bus_destroy_and_free(base);
> +}
> +
> +static void test_simple_read_write(test_bus *bus, int fd)
> +{
> + static const char zero[] = { 0, 0, 0 };
> + static const char abc[] = { 'a', 'b', 'c' };
> +
> + int rv;
> + char buf[3];
> + ssize_t n;
> +
> + rv = ioctl(fd, I2C_SLAVE, DEVICE_SIMPLE_READ_WRITE);
> + rtems_test_assert(rv == 0);
> +
> + errno = 0;
> + rv = ioctl(fd, 0xb00b);
> + rtems_test_assert(rv == -1);
> + rtems_test_assert(errno == ENOTTY);
> +
> + errno = 0;
> + n = write(fd, &buf[0], 1000);
> + rtems_test_assert(n == -1);
> + rtems_test_assert(errno == EIO);
> +
> + errno = 0;
> + n = read(fd, &buf[0], 1000);
> + rtems_test_assert(n == -1);
> + rtems_test_assert(errno == EIO);
> +
> + rtems_test_assert(
> + memcmp(&bus->simple_read_write.buf[0], &zero[0], sizeof(buf)) == 0
> + );
> +
> + n = write(fd, &abc[0], sizeof(buf));
> + rtems_test_assert(n == (ssize_t) sizeof(buf));
> +
> + rtems_test_assert(
> + memcmp(&bus->simple_read_write.buf[0], &abc[0], sizeof(buf)) == 0
> + );
> +
> + n = read(fd, &buf[0], sizeof(buf));
> + rtems_test_assert(n == (ssize_t) sizeof(buf));
> +
> + rtems_test_assert(memcmp(&buf[0], &abc[0], sizeof(buf)) == 0);
> +}
> +
> +static void test(void)
> +{
> + rtems_resource_snapshot snapshot;
> + test_bus *bus;
> + int rv;
> + int fd;
> +
> + rtems_resource_snapshot_take(&snapshot);
> +
> + bus = (test_bus *) i2c_bus_alloc_and_init(sizeof(*bus));
> + rtems_test_assert(bus != NULL);
> +
> + bus->base.transfer = test_transfer;
> + bus->base.set_clock = test_set_clock;
> + bus->base.destroy = test_destroy;
> + bus->base.functionality = I2C_FUNC_I2C | I2C_FUNC_PROTOCOL_MANGLING
> + | I2C_FUNC_NOSTART;
> +
> + bus->simple_read_write.base.transfer = test_simple_read_write_transfer;
> + bus->devices[0] = &bus->simple_read_write.base;
> +
> + rv = i2c_bus_register(&bus->base, &bus_path[0]);
> + rtems_test_assert(rv == 0);
> +
> + fd = open(&bus_path[0], O_RDWR);
> + rtems_test_assert(fd >= 0);
> +
> + rtems_test_assert(bus->clock == 0);
> + rv = ioctl(fd, I2C_BUS_SET_CLOCK, 0xdeadbeefUL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->clock == 0xdeadbeef);
> +
> + rv = ioctl(fd, I2C_BUS_OBTAIN);
> + rtems_test_assert(rv == 0);
> +
> + rv = ioctl(fd, I2C_BUS_RELEASE);
> + rtems_test_assert(rv == 0);
> +
> + rtems_test_assert(!bus->base.ten_bit_address);
> +
> + rv = ioctl(fd, I2C_TENBIT, 1UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.ten_bit_address);
> +
> + rv = ioctl(fd, I2C_TENBIT, 0UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(!bus->base.ten_bit_address);
> +
> + rtems_test_assert(!bus->base.use_pec);
> +
> + rv = ioctl(fd, I2C_PEC, 1UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.use_pec);
> +
> + rv = ioctl(fd, I2C_PEC, 0UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(!bus->base.use_pec);
> +
> + rv = ioctl(fd, I2C_SLAVE, 123UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.default_address == 123);
> +
> + rv = ioctl(fd, I2C_SLAVE_FORCE, 456UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.default_address == 456);
> +
> + rtems_test_assert(bus->base.retries == 0);
> +
> + rv = ioctl(fd, I2C_RETRIES, 1UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.retries == 1);
> +
> + rv = ioctl(fd, I2C_RETRIES, 0UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.retries == 0);
> +
> + rtems_test_assert(bus->base.timeout == 0);
> +
> + rv = ioctl(fd, I2C_TIMEOUT, 1UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.timeout == 5);
> +
> + rv = ioctl(fd, I2C_TIMEOUT, 0UL);
> + rtems_test_assert(rv == 0);
> + rtems_test_assert(bus->base.timeout == 0);
> +
> + test_simple_read_write(bus, fd);
> +
> + rv = close(fd);
> + rtems_test_assert(rv == 0);
> +
> + rv = unlink(&bus_path[0]);
> + rtems_test_assert(rv == 0);
> +
> + rtems_test_assert(rtems_resource_snapshot_check(&snapshot));
> +}
> +
> +static void Init(rtems_task_argument arg)
> +{
> + TEST_BEGIN();
> +
> + test();
> +
> + TEST_END();
> + rtems_test_exit(0);
> +}
> +
> +#define CONFIGURE_MICROSECONDS_PER_TICK 2000
> +
> +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
> +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
> +
> +#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
> +
> +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 7
> +
> +#define CONFIGURE_MAXIMUM_TASKS 1
> +
> +#define CONFIGURE_MAXIMUM_SEMAPHORES 1
> +
> +#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
> +
> +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
> +
> +#define CONFIGURE_INIT
> +
> +#include <rtems/confdefs.h>
> --
> 1.8.4.5
>
> _______________________________________________
> devel mailing list
> devel at rtems.org
> http://lists.rtems.org/mailman/listinfo/devel
>
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