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tinnedkarmaxiaoxiang781216
tinnedkarma
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xiaoxiang781216
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feat: add basic driver for amg88xx sensor
Basic amg88xx sensor handling (open, close, read, ioctl). No interrupts supported. I intend to add support for this feature when I gain more know-how on nuttx/posix.
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‎boards/arm/stm32/common/include/stm32_amg88xx.h

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/****************************************************************************
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* boards/arm/stm32/common/include/stm32_amg88xx.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 __BOARDS_ARM_STM32_COMMON_INCLUDE_STM32_AMG88XX_H
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#define __BOARDS_ARM_STM32_COMMON_INCLUDE_STM32_AMG88XX_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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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: board_amg88xx_initialize()
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*
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* Description:
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* Initialize and register the AMG88xx infrared matrix sensor driver.
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*
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* Input Parameters:
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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_amg88xx_initialize(int busno);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BOARDS_ARM_STM32_COMMON_INCLUDE_STM32_AMG88XX_H */

‎boards/arm/stm32/common/src/CMakeLists.txt

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@@ -128,6 +128,10 @@ if(CONFIG_CL_MFRC522)
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list(APPEND SRCS stm32_mfrc522.c)
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endif()
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if(CONFIG_SENSORS_AMG88XX)
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list(APPEND SRCS stm32_amg88xx.c)
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endif()
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if(CONFIG_LIS3DSH)
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list(APPEND SRCS stm32_lis3dsh.c)
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endif()

‎boards/arm/stm32/common/src/Make.defs

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@@ -136,6 +136,10 @@ ifeq ($(CONFIG_CL_MFRC522),y)
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CSRCS += stm32_mfrc522.c
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endif
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ifeq ($(CONFIG_SENSORS_AMG88XX),y)
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CSRCS+= stm32_amg88xx.c
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endif
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ifeq ($(CONFIG_LIS3DSH),y)
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CSRCS += stm32_lis3dsh.c
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endif

‎boards/arm/stm32/common/src/stm32_amg88xx.c

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/****************************************************************************
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* boards/arm/stm32/common/src/stm32_amg88xx.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 <errno.h>
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#include <debug.h>
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/sensors/amg88xx.h>
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#include <arch/board/board.h>
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#include "stm32.h"
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#include "stm32_i2c.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* What is the point of passing devno if only
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* a single config struct is defined
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* irm = infrared map / infrared matrix
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*/
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#define AMG88XX_DEVNO_PATH_0 "/dev/irm0"
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* One sensor connected to the board */
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/* During device registration OS allocates an pointer to an amg88xx_config_s
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* not the actual struct, that implies that for each sensor there is the
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* need for a config struct at a valid memory location which will be passed
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* to the pointer mentioned above. So there can be only one sensor,
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* as there is one global config struct instantiated here.
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* Is this the intended behaviour to minimize the memory allocated through
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* malloc?
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*/
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static struct amg88xx_config_s g_amg88xx_config_0 =
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{
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.addr = CONFIG_SENSOR_AMG88XX_ADDR,
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.speed = I2C_SPEED_STANDARD
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};
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/****************************************************************************
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* Private Functions
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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_amg88xx_initialize()
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*
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* Description:
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* Initialize and register the AMG88xx infrared matrix sensor driver.
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*
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* Input Parameters:
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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_amg88xx_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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sninfo("Initializing AMG88xx!\n");
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/* Initialize I2C */
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i2c = stm32_i2cbus_initialize(busno);
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if (!i2c)
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{
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return -ENODEV;
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}
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/* Then register the sensor */
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ret = amg88xx_register(AMG88XX_DEVNO_PATH_0, i2c, &g_amg88xx_config_0);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Error registering AMG88xx\n");
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}
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return ret;
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}

‎boards/arm/stm32/nucleo-f429zi/src/stm32_appinitialize.c

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#include "stm32_romfs.h"
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#endif
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#ifdef CONFIG_SENSORS_AMG88XX
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#include "stm32_amg88xx.h"
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#endif
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#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
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# include "stm32_i2c.h"
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_i2c_register
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*
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* Description:
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* Register one I2C drivers for the I2C tool.
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*
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****************************************************************************/
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#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
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static void stm32_i2c_register(int bus)
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{
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struct i2c_master_s *i2c;
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int ret;
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i2c = stm32_i2cbus_initialize(bus);
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if (i2c == NULL)
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{
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syslog(LOG_ERR, "ERROR: Failed to get I2C%d interface\n", bus);
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}
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else
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{
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ret = i2c_register(i2c, bus);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Failed to register I2C%d driver: %d\n",
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bus, ret);
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stm32_i2cbus_uninitialize(i2c);
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}
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}
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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}
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#endif
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#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
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stm32_i2c_register(1);
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#endif
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#ifdef CONFIG_SENSORS_AMG88XX
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board_amg88xx_initialize(1);
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#endif
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UNUSED(ret);
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return OK;
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}

‎drivers/sensors/CMakeLists.txt

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list(APPEND SRCS bmm150_uorb.c)
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endif()
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if(CONFIG_SENSORS_AMG88XX)
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list(APPEND SRCS amg88xx.c)
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endif()
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endif() # CONFIG_I2C
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# These drivers depend on SPI support

‎drivers/sensors/Kconfig

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@@ -1717,4 +1717,36 @@ config SENSORS_LTR308_THREAD_STACKSIZE
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endif # SENSORS_LTR308
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config SENSORS_AMG88XX
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bool "AMG88xx infrared array sensor"
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default n
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select I2C
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---help---
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Enable driver support for AMG88xx infrared array sensor.
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if SENSORS_AMG88XX
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choice
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prompt "AMG88xx AD_SELECT value"
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default SENSOR_AMG88XX_AD_SELECT_0
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---help---
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AD SELECT sets the amg88xx i2c address
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AD_SELECT tied to GND -> sensor address 0x68
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AD_SELECT tied to VCC -> sensor address 0x69
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config SENSOR_AMG88XX_AD_SELECT_0
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bool "AD_SELECT tied to GND"
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config SENSOR_AMG88XX_AD_SELECT_1
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bool "AD_SELECT tied to VCC"
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endchoice
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config SENSOR_AMG88XX_ADDR
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hex
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default 0x68 if SENSOR_AMG88XX_AD_SELECT_0
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default 0x69 if SENSOR_AMG88XX_AD_SELECT_1
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endif # SENSORS_AMG88XX
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endif # SENSORS

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