From 35fa8bdfcab1155d74ab09e712ece63df0f116fb Mon Sep 17 00:00:00 2001 From: Philippe Coval Date: Tue, 13 Oct 2020 12:49:34 +0200 Subject: [PATCH] freedom-k64f: Add I2C initial support 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 --- .../arm/kinetis/freedom-k64f/include/board.h | 11 +++ boards/arm/kinetis/freedom-k64f/src/Makefile | 4 + .../kinetis/freedom-k64f/src/k64_bringup.c | 8 +- boards/arm/kinetis/freedom-k64f/src/k64_i2c.c | 94 +++++++++++++++++++ 4 files changed, 116 insertions(+), 1 deletion(-) create mode 100644 boards/arm/kinetis/freedom-k64f/src/k64_i2c.c diff --git a/boards/arm/kinetis/freedom-k64f/include/board.h b/boards/arm/kinetis/freedom-k64f/include/board.h index 5f82f7fa71..5da263aa8d 100644 --- a/boards/arm/kinetis/freedom-k64f/include/board.h +++ b/boards/arm/kinetis/freedom-k64f/include/board.h @@ -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 */ diff --git a/boards/arm/kinetis/freedom-k64f/src/Makefile b/boards/arm/kinetis/freedom-k64f/src/Makefile index bb1782bb3b..54841a1ba5 100644 --- a/boards/arm/kinetis/freedom-k64f/src/Makefile +++ b/boards/arm/kinetis/freedom-k64f/src/Makefile @@ -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) diff --git a/boards/arm/kinetis/freedom-k64f/src/k64_bringup.c b/boards/arm/kinetis/freedom-k64f/src/k64_bringup.c index da4a818a34..aadb0cff4d 100644 --- a/boards/arm/kinetis/freedom-k64f/src/k64_bringup.c +++ b/boards/arm/kinetis/freedom-k64f/src/k64_bringup.c @@ -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); } } diff --git a/boards/arm/kinetis/freedom-k64f/src/k64_i2c.c b/boards/arm/kinetis/freedom-k64f/src/k64_i2c.c new file mode 100644 index 0000000000..0fcf802f4e --- /dev/null +++ b/boards/arm/kinetis/freedom-k64f/src/k64_i2c.c @@ -0,0 +1,94 @@ +/**************************************************************************** + * boards/arm/kinetis/freedom-k64f/src/k64_i2c.c + * + * Copyright (C) 2020 Philippe Coval. All rights reserved. + * Author: Philippe Coval + * + * 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 + +#include +#include + +#include + +#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 */