tim12_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 "stm32f7xx_hal.h"
#include "stm32f7xx_hal_tim.h"
#include "dkprintf.h"

tim12_buzzer.c の依存先関係図:

[ソースコード]

マクロ定義
#define	ARDUINO_PWM_D6_Pin   GPIO_PIN_6
#define	ARDUINO_PWM_D6_GPIO_Port   GPIOH

関数
static void	MX_TIM12_Init (void)
void	HAL_TIM_Base_MspInit (TIM_HandleTypeDef *htim_base)
void	start_tim12 (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, long com, long arg)
static int	buzzer_suspend (struct st_device *dev)
static int	buzzer_resume (struct st_device *dev)

変数
TIM_HandleTypeDef	htim12
const device	buzzer_device

詳解

圧電ブザードライバ

日付

2017.02.04

著者

Takashi SHUDO

接続

圧電ブザー STM32F7(CPU PIN)

---

DIN PH6

ブザー音のパルスはTIM12で作成

使用方法

ioctl(0:Off/1:On, 周波数(Hz))

tim12_buzzer.c に定義があります。

変数詳解

buzzer_device

const device buzzer_device

初期値:

= {
        .name           = DEF_DEV_NAME_BUZZER,
        .explan         = "STM32F7 TIM12 buzzer",
        .register_dev   = buzzer_register,
        .unregister_dev = buzzer_unregister,
        .open           = buzzer_open,
        .close          = buzzer_close,
        .ioctl          = buzzer_ioctl,
        .suspend        = buzzer_suspend,
        .resume         = buzzer_resume,
}

tim12_buzzer.c の 205 行目に定義があります。