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stm32h7/linum-stm32h753bi: add tone support
Signed-off-by: Jorge Guzman <[email protected]>
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‎Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst

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@@ -867,3 +867,9 @@ search the function **lv_nuttx_fbdev_set_file** and modify line 156 as follows:
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dsc->mem_off_screen = malloc(data_size);
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to
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dsc->mem_off_screen = (void*)0xC00000000;
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tone
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----
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This example demonstrates how to use PWM4 and Timer17 to play music using the Tone library and the board's buzzer.
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‎boards/arm/stm32h7/linum-stm32h753bi/configs/tone/defconfig

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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_DEBUG_ERROR is not set
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# CONFIG_NSH_ALIAS is not set
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# CONFIG_NSH_DISABLE_IFCONFIG is not set
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# CONFIG_NSH_DISABLE_PS is not set
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# CONFIG_STANDARD_SERIAL is not set
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# CONFIG_STM32H7_USE_LEGACY_PINMAP is not set
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CONFIG_ARCH="arm"
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CONFIG_ARCH_BOARD="linum-stm32h753bi"
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CONFIG_ARCH_BOARD_LINUM_STM32H753BI=y
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CONFIG_ARCH_CHIP="stm32h7"
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CONFIG_ARCH_CHIP_STM32H753BI=y
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CONFIG_ARCH_CHIP_STM32H7=y
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CONFIG_ARCH_CHIP_STM32H7_CORTEXM7=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARMV7M_DCACHE=y
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CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
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CONFIG_ARMV7M_DTCM=y
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CONFIG_ARMV7M_ICACHE=y
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CONFIG_AUDIO_TONE=y
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CONFIG_BOARD_LOOPSPERMSEC=43103
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CONFIG_BUILTIN=y
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CONFIG_DEBUG_FEATURES=y
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CONFIG_DEBUG_PWM=y
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CONFIG_DEBUG_SYMBOLS=y
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CONFIG_DEBUG_TIMER=y
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CONFIG_DRIVERS_AUDIO=y
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CONFIG_EXAMPLES_ALARM=y
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INTELHEX_BINARY=y
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CONFIG_LIBM=y
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CONFIG_MM_REGIONS=4
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_LINELEN=120
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CONFIG_NSH_READLINE=y
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CONFIG_ONESHOT=y
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CONFIG_PREALLOC_TIMERS=4
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CONFIG_PWM=y
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CONFIG_RAM_SIZE=245760
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CONFIG_RAM_START=0x20010000
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CONFIG_RAW_BINARY=y
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CONFIG_READLINE_CMD_HISTORY=y
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CONFIG_READLINE_CMD_HISTORY_LINELEN=120
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CONFIG_RR_INTERVAL=200
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CONFIG_RTC_ALARM=y
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CONFIG_RTC_DATETIME=y
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CONFIG_RTC_DRIVER=y
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CONFIG_SCHED_WAITPID=y
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CONFIG_START_DAY=6
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2011
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CONFIG_STM32H7_ONESHOT=y
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CONFIG_STM32H7_PWR=y
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CONFIG_STM32H7_RTC=y
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CONFIG_STM32H7_TIM17=y
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CONFIG_STM32H7_TIM4=y
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CONFIG_STM32H7_TIM4_CH2OUT=y
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CONFIG_STM32H7_TIM4_CHANNEL=2
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CONFIG_STM32H7_TIM4_PWM=y
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CONFIG_STM32H7_USART1=y
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CONFIG_SYSTEM_CLE=y
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CONFIG_SYSTEM_NSH=y
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CONFIG_TASK_NAME_SIZE=0
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CONFIG_USART1_SERIAL_CONSOLE=y

‎boards/arm/stm32h7/linum-stm32h753bi/include/board.h

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@@ -418,7 +418,7 @@
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#define GPIO_I2C3_SDA (GPIO_I2C3_SDA_2|GPIO_SPEED_100MHz) /* PH8 */
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/* PWM - Buzzer */
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#define GPIO_TIM4_CH2OUT (GPIO_TIM4_CH2OUT_1|GPIO_SPEED_100MHz) /* PB7 */
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#define GPIO_TIM4_CH2OUT (GPIO_TIM4_CH2OUT_1|GPIO_SPEED_100MHz) /* PB7 */
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/* FDCAN1 */
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‎boards/arm/stm32h7/linum-stm32h753bi/src/CMakeLists.txt

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@@ -54,6 +54,10 @@ if(CONFIG_PWM)
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list(APPEND SRCS stm32_pwm.c)
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endif()
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if(CONFIG_AUDIO_TONE)
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list(APPEND SRCS stm32_tone.c)
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endif()
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if(CONFIG_MTD_W25QXXXJV)
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list(APPEND SRCS stm32_w25q.c)
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endif()

‎boards/arm/stm32h7/linum-stm32h753bi/src/Makefile

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@@ -76,4 +76,8 @@ ifeq ($(CONFIG_STM32H7_LTDC),y)
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CSRCS += stm32_lcd.c
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endif
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ifeq ($(CONFIG_AUDIO_TONE),y)
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CSRCS += stm32_tone.c
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endif
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include $(TOPDIR)/boards/Board.mk

‎boards/arm/stm32h7/linum-stm32h753bi/src/linum-stm32h753bi.h

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/* PWM */
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#define BUZZER_PWMTIMER 4
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#define BUZZER_PWMTIMER 4
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/* OneShot Timer */
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#define BOARD_TONE_ONESHOT_TIM 17 /* Timer 17 - Oneshot timer for note timings */
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#define BOARD_TONE_ONESHOT_TIM_RES 10 /* Timer 17 - Oneshot timer resolution (us) */
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/* Ethernet
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*
@@ -267,4 +272,19 @@ int board_qencoder_initialize(int devno, int timerno);
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int stm32_mfrc522initialize(const char *devpath);
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#endif
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/****************************************************************************
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* Name: board_tone_initialize
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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/toneN
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*
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* Description:
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* Configure and initialize the tone generator.
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*
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****************************************************************************/
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#ifdef CONFIG_AUDIO_TONE
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int board_tone_initialize(int devno);
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#endif
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#endif /* __BOARDS_ARM_STM32H7_LINUM_STM32H753BI_SRC_LINUM_STM32H753BI_H */

‎boards/arm/stm32h7/linum-stm32h753bi/src/stm32_bringup.c

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@@ -281,6 +281,16 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef CONFIG_AUDIO_TONE
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/* Configure and initialize the tone generator. */
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ret = board_tone_initialize(0);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: board_tone_initialize() failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_NETDEV_LATEINIT
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# ifdef CONFIG_STM32H7_FDCAN1

‎boards/arm/stm32h7/linum-stm32h753bi/src/stm32_tone.c

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/****************************************************************************
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* boards/arm/stm32h7/linum-stm32h753bi/src/stm32_tone.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <nuttx/timers/pwm.h>
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#include <nuttx/timers/oneshot.h>
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#include <nuttx/audio/tone.h>
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#include <arch/board/board.h>
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#include "linum-stm32h753bi.h"
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#include "arm_internal.h"
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#include "stm32_pwm.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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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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/****************************************************************************
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* Public Data
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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: tone_example
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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/toneN
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*
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* Description:
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* Configure and test the tone generator.
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*
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****************************************************************************/
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static int tone_example(int devno)
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{
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int ret;
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int fd;
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char devpath[12];
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const char msg[] = "t120o1l16b9n0baan0bn0bn0baaan0b9n0baan0b";
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snprintf(devpath, 12, "/dev/tone%d", devno);
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fd = open(devpath, O_RDWR);
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if (fd < 0)
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{
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printf("Failed to open device driver at: %s\n", devpath);
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return -errno;
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}
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ret = write(fd, msg, sizeof(msg));
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if (ret < 0)
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{
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printf("Failed to write to device driver at: %s\n", devpath);
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return ret;
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}
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close(fd);
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return ret;
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}
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/****************************************************************************
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* Name: board_tone_initialize
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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/toneN
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*
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* Description:
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* Configure and initialize the tone generator.
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*
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****************************************************************************/
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int board_tone_initialize(int devno)
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{
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static bool initialized = false;
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struct pwm_lowerhalf_s *tone;
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struct oneshot_lowerhalf_s *oneshot = NULL;
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int ret;
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char devpath[12];
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/* Have we already initialized? */
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if (!initialized)
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{
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/* Call stm32_pwminitialize() to get an instance of the PWM interface */
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tone = stm32_pwminitialize(BUZZER_PWMTIMER);
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if (!tone)
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{
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auderr("Failed to get the STM32 PWM lower half to AUDIO TONE\n");
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return -ENODEV;
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}
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/* Initialize TONE PWM */
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tone->ops->setup(tone);
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/* Initialize ONESHOT Timer */
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oneshot = oneshot_initialize(BOARD_TONE_ONESHOT_TIM,
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BOARD_TONE_ONESHOT_TIM_RES);
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if (!oneshot)
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{
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auderr("Failed to initialize ONESHOT Timer!\n");
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return -ENODEV;
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}
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/* Register the Audio Tone driver at "/dev/tone0" */
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snprintf(devpath, 12, "/dev/tone%d", devno);
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ret = tone_register(devpath, tone, oneshot);
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if (ret < 0)
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{
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auderr("ERROR: tone_register failed: %d\n", ret);
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return ret;
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}
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/* Now we are initialized */
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initialized = true;
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/* Play tone example */
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tone_example(devno);
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}
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return OK;
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}

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