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Add support of CAN character device for tm4c1294 launchpad.

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This commit is contained in:
David 2023-01-16 14:29:31 +01:00 committed by Alin Jerpelea
parent 5dbd082fad
commit c19b5eeb8d
6 changed files with 233 additions and 1 deletions
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42
boards/arm/tiva/tm4c1294-launchpad/Kconfig
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@ -72,4 +72,46 @@ config TM4C1294_LAUNCHPAD_TIMER_ALTCLK
endif # TM4C1294_LAUNCHPAD_TIMER
endif # TIVA_TIMER32_PERIODIC
config TM4C1294_LAUNCHPAD_JUMPERS_CAN
bool "Use CAN jumpers configuration"
default n
select TIVA_UART2
---help---
If set, NuttX will assume the jumpers JP4 and JP5 are set in CAN configuration.
This means UART2 will be connected to the ICDI serial port.
choice
prompt "UART2 Rx pin selection"
depends on TIVA_UART2
default TM4C1294_LAUNCHPAD_UART2_RX_A6
config TM4C1294_LAUNCHPAD_UART2_RX_A6
bool "Use A6 as UART Rx pin"
default n
depends on TIVA_UART2 && !TM4C1294_LAUNCHPAD_JUMPERS_CAN
config TM4C1294_LAUNCHPAD_UART2_RX_D4
bool "Use D4 as UART Rx pin"
default n
depends on TIVA_UART2
endchoice # UART2 Rx pin selection
choice
prompt "UART2 Tx pin selection"
default TM4C1294_LAUNCHPAD_UART2_TX_A7
depends on TIVA_UART2
config TM4C1294_LAUNCHPAD_UART2_TX_A7
bool "Use A7 as UART Tx pin"
default n
depends on TIVA_UART2 && !TM4C1294_LAUNCHPAD_JUMPERS_CAN
config TM4C1294_LAUNCHPAD_UART2_TX_D5
bool "Use D5 as UART Tx pin"
default n
depends on TIVA_UART2
endchoice # UART2 Tx pin selection
endif # ARCH_BOARD_TM4C1294_LAUNCHPAD

12
boards/arm/tiva/tm4c1294-launchpad/include/board.h
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@ -190,6 +190,18 @@
#define GPIO_EN0_LED1 GPIO_EN0_LED1_1
#define GPIO_EN0_LED2 GPIO_EN0_LED2_1
#if CONFIG_TM4C1294_LAUNCHPAD_UART2_RX_D4
#define GPIO_UART2_RX GPIO_UART2_RX_2
#elif CONFIG_TM4C1294_LAUNCHPAD_UART2_RX_A6
#define GPIO_UART2_RX GPIO_UART2_RX_1
#endif
#if CONFIG_TM4C1294_LAUNCHPAD_UART2_TX_D5
#define GPIO_UART2_TX GPIO_UART2_TX_2
#elif CONFIG_TM4C1294_LAUNCHPAD_UART2_TX_A7
#define GPIO_UART2_TX GPIO_UART2_TX_1
#endif
/* Control pins for BOOST-CC2564MODA plugged into BoosterPack1
*
* --- ------------

4
boards/arm/tiva/tm4c1294-launchpad/src/Makefile
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@ -36,6 +36,10 @@ ifeq ($(CONFIG_TIVA_ETHERNET),y)
CSRCS += tm4c_ethernet.c
endif
ifeq ($(CONFIG_TIVA_CAN),y)
CSRCS += tm4c_can.c
endif
ifeq ($(CONFIG_DK_TM4C129X_TIMER),y)
CSRCS += tm4c_timer.c
endif

18
boards/arm/tiva/tm4c1294-launchpad/src/tm4c1294-launchpad.h
View File

@ -41,7 +41,7 @@
#if !defined(CONFIG_TIVA_HCIUART) || !defined(CONFIG_BLUETOOTH_UART)
# undef HAVE_HCIUART
#elif defined(CONFIG_TIVA_UART0_HCIUART)
#elif defined(CONFIG_TIVA_UART0_HCIUART) && !defined(TM4C1294_LAUNCHPAD_JUMPERS_CAN)
# define HCIUART_SERDEV HCIUART0
#elif defined(CONFIG_TIVA_UART1_HCIUART)
# define HCIUART_SERDEV HCIUART1
@ -77,6 +77,10 @@
# undef HAVE_I2CTOOL
#endif
/* Define the procfs mounting point */
#define TIVA_PROCFS_MOUNTPOINT "/proc"
/* LED definitions **********************************************************/
/* The EK-TM4C1294XL has a four green LEDs.
@ -211,6 +215,18 @@ int tm4c_bringup(void);
int tiva_timer_configure(void);
#endif
/****************************************************************************
* Name: tm4c_can_setup
*
* Description:
* Initialize CAN modules and register the CAN driver.
*
****************************************************************************/
#ifdef CONFIG_TIVA_CAN
int tm4c_can_setup(void);
#endif
/****************************************************************************
* Name: hciuart_dev_initialize
*

22
boards/arm/tiva/tm4c1294-launchpad/src/tm4c_bringup.c
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@ -31,6 +31,7 @@
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/sensors/qencoder.h>
#include <arch/board/board.h>
#include <nuttx/fs/fs.h>
#include <nuttx/timers/pwm.h>
@ -305,6 +306,17 @@ int tm4c_bringup(void)
tm4c_i2ctool();
#ifdef CONFIG_FS_PROCFS
/* Mount the procfs file system */
ret = nx_mount(NULL, TIVA_PROCFS_MOUNTPOINT, "procfs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount procfs at %s: %d\n",
TIVA_PROCFS_MOUNTPOINT, ret);
}
#endif
#ifdef HAVE_PWM
/* Register PWM drivers */
@ -317,6 +329,16 @@ int tm4c_bringup(void)
tm4c_qei();
#endif
#ifdef CONFIG_TIVA_CAN
/* Initialize CAN module and register the CAN driver(s) */
ret = tm4c_can_setup();
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: tm4c_can_setup failed %d\n", ret);
}
#endif
#ifdef HAVE_TIMER
/* Initialize the timer driver */

136
boards/arm/tiva/tm4c1294-launchpad/src/tm4c_can.c Normal file
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@ -0,0 +1,136 @@
/****************************************************************************
* boards/arm/tiva/tm4c1294-launchpad/src/tm4c_can.c
* Based heavily on tiva_can.c from the tm4c1293-launchpad board
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/can/can.h>
#include <arch/board/board.h>
#include "chip.h"
#include "arm_internal.h"
#include "tiva_can.h"
#include "tm4c1294-launchpad.h"
#include "tiva_enableclks.h"
#include "tiva_gpio.h"
#include "hardware/tiva_pinmap.h"
#ifdef CONFIG_CAN
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tm4c_can_setup
*
* Description:
* Initialize CAN and register the CAN device
*
****************************************************************************/
int tm4c_can_setup(void)
{
#ifdef CONFIG_TIVA_CAN
int ret;
# ifdef CONFIG_TIVA_CAN0
tiva_can0_enableclk();
ret = tiva_configgpio(GPIO_CAN0_RX);
if (ret < 0)
{
goto configgpio_error;
}
ret = tiva_configgpio(GPIO_CAN0_TX);
if (ret < 0)
{
goto configgpio_error;
}
/* Call tiva_can_initialize() to get an instance of CAN interface 0
* and register it.
*/
ret = tiva_can_initialize("/dev/can0", 0);
if (ret < 0)
{
canerr("ERROR: Failed to get/register CAN interface 0\n");
return ret;
}
# endif /* CONFIG_TIVA_CAN0 */
# ifdef CONFIG_TIVA_CAN1
tiva_can1_enableclk();
ret = tiva_configgpio(GPIO_CAN1_RX);
if (ret < 0)
{
goto configgpio_error;
}
ret = tiva_configgpio(GPIO_CAN1_TX);
if (ret < 0)
{
goto configgpio_error;
}
/* Call tiva_can_initialize() to get an instance of CAN interface 1
* and register it.
*/
ret = tiva_can_initialize("/dev/can1", 1);
if (ret < 0)
{
canerr("ERROR: Failed to get/register CAN interface 1\n");
return ret;
}
# endif /* CONFIG_TIVA_CAN1 */
return OK;
configgpio_error:
canerr("ERROR: failed to configure CAN GPIO pin.\n");
return ret;
#else
return -ENODEV;
#endif
}
#endif /* CONFIG_CAN */