tim3_buzzer.c ファイル

圧電ブザードライバ [詳解]

#include "sysconfig.h"
#include "device.h"
#include "device/buzzer_ioctl.h"
#include "timer.h"
#include "tkprintf.h"
#include "stm32f4xx_hal.h"

tim3_buzzer.c の依存先関係図:

[ソースコード]

関数
void	MX_TIM3_Init (void)
void	HAL_TIM_Base_MspInit (TIM_HandleTypeDef *htim_base)
void	start_tim3 (void)
void	on_buzzer (long cycle)
void	off_buzzer (void)
static int	buzzer_register (struct st_device *dev, char *param)
static int	buzzer_unregister (struct st_device *dev)
static int	buzzer_open (struct st_device *dev)
static int	buzzer_close (struct st_device *dev)
static int	buzzer_ioctl (struct st_device *dev, unsigned int com, unsigned int arg, void *param)
static int	buzzer_suspend (struct st_device *dev)
static int	buzzer_resume (struct st_device *dev)

変数
TIM_HandleTypeDef	htim3
const struct st_device	buzzer_device

詳解

圧電ブザードライバ

日付

2015.08.23

著者

Takashi SHUDO

接続

圧電ブザー STM32F4(CPU PIN)

---

DIN PB1(27pin)

ブザー音のパルスはTIM3で作成

使用方法

ioctl(0:Off/1:On, 周波数(Hz))

tim3_buzzer.c に定義があります。

変数詳解

buzzer_device

const struct st_device buzzer_device

初期値:

= {
        .name           = DEF_DEV_NAME_BUZZER,
        .explan         = "STM32F4 TIM3 buzzer",
        .register_dev   = buzzer_register,
        .unregister_dev = buzzer_unregister,
        .open           = buzzer_open,
        .close          = buzzer_close,
        .ioctl          = buzzer_ioctl,
        .suspend        = buzzer_suspend,
        .resume         = buzzer_resume,
}

tim3_buzzer.c の 166 行目に定義があります。