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The following commit(s) were added to refs/heads/master by this push:
new 0476f8d95c rp2040: Add support to MAX6675
0476f8d95c is described below
commit 0476f8d95cb1946898e47a781d0e97710d4b091d
Author: Alan Carvalho de Assis <[email protected]>
AuthorDate: Mon Jul 1 09:48:20 2024 -0300
rp2040: Add support to MAX6675
---
boards/arm/rp2040/common/include/rp2040_max6675.h | 84 +++++++++++++++++++++
boards/arm/rp2040/common/src/Make.defs | 4 +
.../arm/rp2040/common/src/rp2040_common_bringup.c | 15 ++++
boards/arm/rp2040/common/src/rp2040_max6675.c | 86 ++++++++++++++++++++++
4 files changed, 189 insertions(+)
diff --git a/boards/arm/rp2040/common/include/rp2040_max6675.h
b/boards/arm/rp2040/common/include/rp2040_max6675.h
new file mode 100644
index 0000000000..cd28ca837b
--- /dev/null
+++ b/boards/arm/rp2040/common/include/rp2040_max6675.h
@@ -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 */
diff --git a/boards/arm/rp2040/common/src/Make.defs
b/boards/arm/rp2040/common/src/Make.defs
index 89b476323e..31e505decd 100644
--- a/boards/arm/rp2040/common/src/Make.defs
+++ b/boards/arm/rp2040/common/src/Make.defs
@@ -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
diff --git a/boards/arm/rp2040/common/src/rp2040_common_bringup.c
b/boards/arm/rp2040/common/src/rp2040_common_bringup.c
index 16bf96c708..5d7cb85efa 100644
--- a/boards/arm/rp2040/common/src/rp2040_common_bringup.c
+++ b/boards/arm/rp2040/common/src/rp2040_common_bringup.c
@@ -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 */
diff --git a/boards/arm/rp2040/common/src/rp2040_max6675.c
b/boards/arm/rp2040/common/src/rp2040_max6675.c
new file mode 100644
index 0000000000..5188118b30
--- /dev/null
+++ b/boards/arm/rp2040/common/src/rp2040_max6675.c
@@ -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;
+}
+
