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freedom-k64f: Add I2C initial support

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It was checked using i2c tool and onboard sensor:

    nsh> i2c bus
    Bus 0: YES

    nsh> i2c dev 1 0x7F
    10: -- -- -- -- -- -- -- -- -- -- -- -- -- 1d -- --

    nsh> i2c get -a 1d -r 0d
    #| READ Bus: 0 Addr: 1d Subaddr: 0d Value: c7

Sensor driver to come next.

Feature should be enabled using:

    CONFIG_SYSTEM_I2CTOOL=y
    CONFIG_KINETIS_I2C0=y

Change-Id: I4f3ff16fae994250f62537cd0c3021465db1189c
Forwarded: https://github.com/apache/incubator-nuttx/pull/1982/
Signed-off-by: Philippe Coval <rzr@users.sf.net>
This commit is contained in:
Philippe Coval 2020-10-13 12:49:34 +02:00 committed by Alan Carvalho de Assis
parent 90476c9895
commit 35fa8bdfca
4 changed files with 116 additions and 1 deletions
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11
boards/arm/kinetis/freedom-k64f/include/board.h
View File

@ -269,4 +269,15 @@
#define PIN_UART3_RX PIN_UART3_RX_2
#define PIN_UART3_TX PIN_UART3_TX_2
/* I2C Bus 0
*
* Pin Name K64 Name
* ---- ----- ------ ---------
* 11 SCL PTE24 2C0_SCL
* 12 SDA PTE25 2C0_SDA
*/
#define PIN_I2C0_SCL PIN_I2C0_SCL_4
#define PIN_I2C0_SDA PIN_I2C0_SDA_4
#endif /* __BOARDS_ARM_FREEDOM_K64F_INCLUDE_BOARD_H */

4
boards/arm/kinetis/freedom-k64f/src/Makefile
View File

@ -53,6 +53,10 @@ else ifeq ($(CONFIG_BOARD_LATE_INITIALIZE),y)
CSRCS += k64_bringup.c
endif
ifeq ($(CONFIG_I2C),y)
CSRCS += k64_i2c.c
endif
ifeq ($(CONFIG_KINETIS_SDHC),y)
CSRCS += k64_sdhc.c
ifeq ($(CONFIG_FS_AUTOMOUNTER),y)

8
boards/arm/kinetis/freedom-k64f/src/k64_bringup.c
View File

@ -88,6 +88,12 @@ int k64_bringup(void)
}
#endif
#if defined(CONFIG_KINETIS_I2C0)
/* Initialize I2C buses */
k64_i2cdev_initialize();
#endif
#ifdef HAVE_MMCSD
/* Initialize the SDHC driver */
@ -109,7 +115,7 @@ int k64_bringup(void)
if (ret < 0)
{
syslog(LOG_ERR,"ERROR: Failed to mount %s: %d\n",
syslog(LOG_ERR, "ERROR: Failed to mount %s: %d\n",
CONFIG_FRDMK64F_SDHC_MOUNT_MOUNTPOINT, errno);
}
}

94
boards/arm/kinetis/freedom-k64f/src/k64_i2c.c Normal file
View File

@ -0,0 +1,94 @@
/****************************************************************************
* boards/arm/kinetis/freedom-k64f/src/k64_i2c.c
*
* Copyright (C) 2020 Philippe Coval. All rights reserved.
* Author: Philippe Coval <rzr@users.sf.net>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/i2c/i2c_master.h>
#include "kinetis_i2c.h"
#if defined(CONFIG_KINETIS_I2C0)
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef CONFIG_KINETIS_I2C0
FAR struct i2c_master_s * g_i2c0_dev;
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: k64_i2cdev_initialize
*
* Description:
* Called to configure I2C
*
****************************************************************************/
int k64_i2cdev_initialize(void)
{
int ret = OK;
#ifdef CONFIG_KINETIS_I2C0
g_i2c0_dev = kinetis_i2cbus_initialize(0);
if (g_i2c0_dev == NULL)
{
syslog(LOG_ERR, "ERROR: kinetis_i2cbus_initialize(0) failed: %d\n",
ret);
ret = -ENODEV;
}
else
{
#ifdef CONFIG_I2C_DRIVER
ret = i2c_register(g_i2c0_dev, 0);
#endif
}
#endif
return ret;
}
#endif /* CONFIG_KINETIS_I2C0 */