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rp2040: Add support to MAX6675

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Alan Carvalho de Assis 2024-07-01 09:48:20 -03:00 committed by Mateusz Szafoni
parent 25886c7b47
commit 0476f8d95c
4 changed files with 189 additions and 0 deletions
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84
boards/arm/rp2040/common/include/rp2040_max6675.h Normal file
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@ -0,0 +1,84 @@
/****************************************************************************
* boards/arm/rp2040/common/include/rp2040_max6675.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_RP2040_COMMON_INCLUDE_RP2040_MAX6675_H
#define __BOARDS_ARM_RP2040_COMMON_INCLUDE_RP2040_MAX6675_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Type 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_max6675_initialize
*
* Description:
* Initialize and register the MAX6675 Temperature Sensor driver.
*
* Input Parameters:
* devno - The device number, used to build the device path as /dev/tempN
* busno - The SPI bus number
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int board_max6675_initialize(int devno, int busno);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __BOARDS_ARM_RP2040_COMMON_INCLUDE_RP2040_MAX6675_H */

4
boards/arm/rp2040/common/src/Make.defs
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@ -103,6 +103,10 @@ ifeq ($(CONFIG_NET_W5500),y)
CSRCS += rp2040_w5500.c
endif
ifeq ($(CONFIG_SENSORS_MAX6675),y)
CSRCS += rp2040_max6675.c
endif
DEPPATH += --dep-path src
VPATH += :src
CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

15
boards/arm/rp2040/common/src/rp2040_common_bringup.c
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@ -68,6 +68,11 @@
#include "rp2040_bmp280.h"
#endif
#ifdef CONFIG_SENSORS_MAX6675
#include <nuttx/sensors/max6675.h>
#include "rp2040_max6675.h"
#endif
#ifdef CONFIG_RP2040_PWM
#include "rp2040_pwm.h"
#include "rp2040_pwmdev.h"
@ -466,6 +471,16 @@ int rp2040_common_bringup(void)
}
#endif
#ifdef CONFIG_SENSORS_MAX6675
/* Try to register MAX6675 device as /dev/temp0 at SPI0 */
ret = board_max6675_initialize(0, 0);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to initialize MAX6675 driver: %d\n", ret);
}
#endif
#ifdef CONFIG_SENSORS_INA219
/* Configure and initialize the INA219 sensor in I2C0 */

86
boards/arm/rp2040/common/src/rp2040_max6675.c Normal file
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@ -0,0 +1,86 @@
/****************************************************************************
* boards/arm/rp2040/common/src/rp2040_max6675.c
*
* 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 <stdio.h>
#include <stdbool.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/arch.h>
#include <nuttx/board.h>
#include <nuttx/spi/spi.h>
#include <nuttx/sensors/max6675.h>
#include "rp2040_spi.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_max6675_initialize
*
* Description:
* Initialize the MAX6675 sensor.
* Input:
* devno - Device number to register, i.e. 0 for /dev/temp0
* busno - The SPI controller port used. i.e. 0 for SPI0
*
****************************************************************************/
int board_max6675_initialize(int devno, int busno)
{
struct spi_dev_s *spi;
char devpath[12];
int ret;
spi = rp2040_spibus_initialize(busno);
if (spi == NULL)
{
lcderr("ERROR: Failed to initialize SPI port %d\n", busno);
return -ENODEV;
}
/* Then register the temperature sensor */
snprintf(devpath, 12, "/dev/temp%d", devno);
ret = max6675_register(devpath, spi);
if (ret < 0)
{
snerr("ERROR: Error registering MAX6675\n");
}
return OK;
}