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Add i2c support for the i.MX8MP
Enable INA219 on the Verdin board
This commit is contained in:
Philippe Leduc
committed by
Alan Carvalho de Assis
Alan Carvalho de Assis
parent
779741d1d9
commit
98e998b934
@@ -604,6 +604,7 @@ config ARCH_CHIP_MX8MP
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select ARCH_HAVE_MPU
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select ARCH_HAVE_FETCHADD
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select ARCH_HAVE_RAMFUNCS
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select ARCH_HAVE_I2CRESET
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select ARM_HAVE_MPU_UNIFIED
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select ARMV7M_HAVE_ICACHE
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select ARMV7M_HAVE_DCACHE
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@@ -31,6 +31,59 @@ config MX8MP_UART4
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select UART4_SERIALDRIVER
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select ARCH_HAVE_SERIAL_TERMIOS
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#####################################################################
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# I2C Configuration (Master)
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#####################################################################
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config MX8MP_I2C
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bool "I2C Master"
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select I2C
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---help---
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Build in support for I2C master mode.
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if MX8MP_I2C
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config MX8MP_I2C1
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bool "I2C1"
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default n
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select I2C
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config MX8MP_I2C2
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bool "I2C2"
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default n
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select I2C
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config MX8MP_I2C3
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bool "I2C3"
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default n
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select I2C
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config MX8MP_I2C4
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bool "I2C4"
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default n
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select I2C
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config MX8MP_I2C5
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bool "I2C5"
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default n
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select I2C
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config MX8MP_I2C6
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bool "I2C6"
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default n
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select I2C
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config MX8MP_I2C_DRIVER
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bool "I2C character driver"
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default n
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select I2C_DRIVER
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---help---
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Build in support for a character driver at /dev/i2c[N] that may be
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used to perform I2C bus transfers from applications. The intent of
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this driver is to support I2C testing. It is not suitable for use
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in any real driver application.
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endif # MX8MP_I2C
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endmenu
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# These "hidden" settings determine whether a peripheral option is available
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@@ -35,3 +35,7 @@ endif
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ifneq ($(CONFIG_SCHED_TICKLESS),y)
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CHIP_CSRCS += mx8mp_timerisr.c
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endif
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ifeq ($(CONFIG_I2C),y)
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CHIP_CSRCS += mx8mp_i2c.c
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endif
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@@ -0,0 +1,67 @@
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/****************************************************************************
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* arch/arm/src/mx8mp/hardware/mx8mp_i2c.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_I2C_H
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#define __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_I2C_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* I2C Register Offsets *****************************************************/
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#define IADR_OFFSET 0x0000
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#define IFDR_OFFSET 0x0004
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#define I2CR_OFFSET 0x0008
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#define I2SR_OFFSET 0x000c
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#define I2DR_OFFSET 0x0010
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/* I2C Register Bit Definitions *********************************************/
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#define IADR_SHIFT 1
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#define IADR_MASK (0x7f << IADR_SHIFT)
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#define IFDR_SHIFT 0
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#define IFDR_MASK (0x3f << IFDR_SHIFT)
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#define I2CR_IEN (1 << 7) /* enable */
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#define I2CR_IIEN (1 << 6) /* interrupt enable */
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#define I2CR_MSTA (1 << 5) /* master/start */
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#define I2CR_MTX (1 << 4) /* transmit */
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#define I2CR_TXAK (1 << 3) /* ACK/NACK on reception */
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#define I2CR_RSTA (1 << 2) /* repeated start */
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#define I2SR_ICF (1 << 7) /* transfer in progress */
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#define I2SR_IAAS (1 << 6) /* addressed as a slave */
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#define I2SR_IBB (1 << 5) /* is busy */
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#define I2SR_IAL (1 << 4) /* arbitration lost */
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#define I2SR_SRW (1 << 2) /* slave read/write (if in slave mode) */
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#define I2SR_IIF (1 << 1) /* interrupt is pending */
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#define I2SR_RXAK (1 << 0) /* no ack detected */
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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#endif /* __ARCH_ARM_SRC_MX8MP_HARDWARE_MX8MP_I2C_H */
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,72 @@
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/****************************************************************************
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* arch/arm/src/mx8mp/mx8mp_i2c.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_MX8MP_MX8MP_I2C_H
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#define __ARCH_ARM_SRC_MX8MP_MX8MP_I2C_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "hardware/mx8mp_i2c.h"
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: mx8mp_i2cbus_initialize
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*
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* Description:
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* Initialize the selected I2C port. And return a unique instance of struct
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* struct i2c_master_s. This function may be called to obtain multiple
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* instances of the interface, each of which may be set up with a
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* different frequency and slave address.
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*
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* Input Parameters:
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* Port number (for hardware that has multiple I2C interfaces)
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*
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* Returned Value:
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* Valid I2C device structure reference on success; a NULL on failure
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*
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****************************************************************************/
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struct i2c_master_s *mx8mp_i2cbus_initialize(int port);
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/****************************************************************************
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* Name: mx8mp_i2cbus_uninitialize
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*
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* Description:
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* De-initialize the selected I2C port, and power down the device.
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*
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* Input Parameters:
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* Device structure as returned by the lpc43_i2cbus_initialize()
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*
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* Returned Value:
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* OK on success, ERROR when internal reference count mismatch or dev
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* points to invalid hardware device.
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*
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****************************************************************************/
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int mx8mp_i2cbus_uninitialize(struct i2c_master_s *dev);
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#endif /* __ARCH_ARM_SRC_MX8MP_MX8MP_I2C_H */
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@@ -23,7 +23,16 @@ include $(TOPDIR)/Make.defs
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CSRCS = mx8mp_boot.c mx8mp_bringup.c
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ifeq ($(CONFIG_BOARDCTL),y)
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CSRCS += mx8mp_appinit.c
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CSRCS += mx8mp_appinit.c
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endif
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ifeq ($(CONFIG_SENSORS_INA219),y)
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CSRCS += mx8mp_ina219.c
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endif
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ifeq ($(CONFIG_MX8MP_I2C_DRIVER),y)
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CSRCS += mx8mp_i2cdev.c
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endif
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include $(TOPDIR)/boards/Board.mk
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@@ -28,10 +28,16 @@
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#include <errno.h>
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#include <sys/types.h>
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#include "verdin-mx8mp.h"
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#ifdef CONFIG_USERLED
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# include <nuttx/leds/userled.h>
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#endif
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#ifdef CONFIG_SENSORS_INA219
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# include "mx8mp_ina219.h"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@@ -58,5 +64,35 @@ int mx8mp_bringup(void)
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}
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#endif
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#ifdef CONFIG_FS_PROCFS
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/* Mount the procfs file system */
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ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C_DRIVER
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/* Initialize I2C buses */
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ret = mx8mp_i2cdev_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: mx8mp_i2cdev_initialize() failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_SENSORS_INA219
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/* Configure and initialize the INA219 sensor in I2C4 */
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ret = board_ina219_initialize(4);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: mx8mp_ina219_initialize() failed: %d\n", ret);
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}
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#endif
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return ret;
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}
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@@ -0,0 +1,147 @@
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/****************************************************************************
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* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_i2cdev.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "arm_internal.h"
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#include "chip.h"
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#include "mx8mp_i2c.h"
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#include <arch/board/board.h>
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_i2cdev_initialize
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*
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* Description:
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* Initialize and register i2c driver for the specified i2c port
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*
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****************************************************************************/
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int board_i2cdev_initialize(int port)
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{
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int ret;
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struct i2c_master_s *i2c;
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i2cinfo("Initializing /dev/i2c%d..\n", port);
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/* Initialize i2c device */
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i2c = mx8mp_i2cbus_initialize(port);
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if (!i2c)
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{
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i2cerr("ERROR: Failed to initialize i2c%d.\n", port);
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return -ENODEV;
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}
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ret = i2c_register(i2c, port);
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if (ret < 0)
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{
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i2cerr("ERROR: Failed to register i2c%d: %d\n", port, ret);
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mx8mp_i2cdev_initialize
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*
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* Description:
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* Called to configure all i2c drivers
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*
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****************************************************************************/
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int mx8mp_i2cdev_initialize(void)
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{
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int ret = 0;
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#ifdef CONFIG_MX8MP_I2C1
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ret = board_i2cdev_initialize(1);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C1.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C2
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ret = board_i2cdev_initialize(2);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C2.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C3
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ret = board_i2cdev_initialize(3);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C3.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C4
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ret = board_i2cdev_initialize(4);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C4.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C5
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ret = board_i2cdev_initialize(5);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C5.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_I2C6
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ret = board_i2cdev_initialize(6);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C6.\n");
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return ret;
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}
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#endif
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return ret;
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}
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@@ -0,0 +1,85 @@
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/****************************************************************************
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* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_ina219.c
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*
|
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* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
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/****************************************************************************
|
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* Included Files
|
||||
****************************************************************************/
|
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#include <nuttx/config.h>
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#include <errno.h>
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#include <syslog.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/sensors/ina219.h>
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#include "mx8mp_i2c.h"
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#include "mx8mp_ina219.h"
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/****************************************************************************
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* Pre-processor Definitions
|
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****************************************************************************/
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/****************************************************************************
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* Public Functions
|
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****************************************************************************/
|
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/****************************************************************************
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* Name: board_ina219_initialize
|
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*
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* Description:
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* Initialize and register the INA219 voltage/current sensor.
|
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*
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* Input parameters:
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* devno - The device number, used to build the device path as /dev/inaN
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* busno - The I2C bus number
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*
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* Returned Value:
|
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* Zero (OK) on success; a negated errno value on failure.
|
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*
|
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****************************************************************************/
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int board_ina219_initialize(int busno)
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{
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struct i2c_master_s *i2c;
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int ret;
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|
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sninfo("Initializing INA219!\n");
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/* Initialize I2C */
|
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i2c = mx8mp_i2cbus_initialize(busno);
|
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if (!i2c)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Then register the sensor */
|
||||
|
||||
ret = ina219_register("/dev/ina219", i2c, 0x40, 10000, 0x00);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "ERROR: Error registering INA219\n");
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,78 @@
|
||||
/****************************************************************************
|
||||
* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_ina219.h
|
||||
*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __BOARDS_ARM_MX8MP_MX8MP_VERDIN_INCLUDE_BOARD_H
|
||||
#define __BOARDS_ARM_MX8MP_MX8MP_VERDIN_INCLUDE_BOARD_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
#include <nuttx/config.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Inline Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: board_ina219_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize and register the INA219 voltage/current sensor.
|
||||
*
|
||||
* Input parameters:
|
||||
* busno - The I2C bus number
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK) on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int board_ina219_initialize(int busno);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __BOARDS_ARM_MX8MP_MX8MP_VERDIN_INCLUDE_BOARD_H */
|
||||
@@ -46,7 +46,7 @@
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: xmc4_bringup
|
||||
* Name: mx8mp_bringup
|
||||
*
|
||||
* Description:
|
||||
* Bring up board features
|
||||
@@ -55,5 +55,15 @@
|
||||
|
||||
int mx8mp_bringup(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: mx8mp_i2cdev_initialize
|
||||
*
|
||||
* Description:
|
||||
* Called to configure all i2c
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int mx8mp_i2cdev_initialize(void);
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* __BOARDS_ARM_MX8MP_MX8MP_VERDIN_SRC_VERDIN_MX8MP_H */
|
||||
|
||||
Reference in New Issue
Block a user