Signed-off-by: kevin <kevin@lmve.net>

stm32F030F4_code/mydrivers/buzzer.c

@@ -0,0 +1,16 @@
+/*
+ * buzzer.c
+ *
+ *  Created on: 2022年4月2日
+ *      Author: wuwen
+ */
+
+
+#include "buzzer.h"
+
+void play_ones(uint16_t freq,uint8_t dutya)
+{
+//寄存器写法  需要根据单片机的时钟来写。
+TIM14->ARR  = (uint32_t)((48000000/freq)-1);TIM14->CCR1 = (uint32_t)(((48000000/freq)-1)*((float)dutya/100));
+}
+

stm32F030F4_code/mydrivers/buzzer.h

@@ -0,0 +1,18 @@
+/*
+ * buzzer.h
+ *
+ *  Created on: 2022年4月2日
+ *      Author: wuwen
+ */
+
+#ifndef BUZZER_H_
+#define BUZZER_H_
+
+#include "main.h"
+
+extern   TIM_HandleTypeDef htim14;
+
+
+void play_ones(uint16_t freq,uint8_t dutya);
+
+#endif /* BUZZER_H_ */

stm32F030F4_code/mydrivers/my.c

@@ -173,8 +173,8 @@ void mymain()
 	OLED_Init_Display_Buffer(0);
 
 	//OLED_ShowStr(0,0,"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");
-
-
+	//HAL_TIM_PWM_Start(&htim14,TIM_CHANNEL_1);//启动n通道的pwm
+	//play_ones(1000,50);
 	while(1)
 	{
 

stm32F030F4_code/mydrivers/my.h

@@ -10,7 +10,7 @@
 
 #include "main.h"
 #include "OLED.h"
-
+#include "buzzer.h"
 #define KEY0 HAL_GPIO_ReadPin(tack_A_GPIO_Port, tack_A_Pin)
 #define KEY1 HAL_GPIO_ReadPin(tack_B_GPIO_Port, tack_B_Pin)
 #define SW_C HAL_GPIO_ReadPin(SW_C_GPIO_Port, SW_C_Pin)