硬件资源:
1,AD9833
2,OLED显示屏
3,4*4矩阵键盘
◆硬件连接：
OLED显示屏------>stm32大黄板
VCC------>VCC
GND------>GND
SCL------>PB6
SDA------>PB7
AD9833信号发生器------>stm32大黄板
VCC------>VCC
GND------>GND
FSY------>PB10
CLK------>PB11
DAT------>PA12
CSP------>A11
4*4矩阵键盘
PA0-PA7
◆实验现象:
通过按键控制产生正弦波、方波、三角波，频率和幅值可通过按键输入数字设置
单片机源程序如下:
- #include "key.h"
- #include "delay.h"
- #include "sys.h"
- #include "5110.h"
- #include "math.h"
- #include <stdlib.h>
- #include "ad9833.h"
- #include "source.h"
- #include "oled.h"
- #define CLK BIT_ADDR(GPIOA_ODR_Addr,10)
- extern u32 freq;
- extern u32 ampli;
- int main(void)
- {
- u8 flag;
- u8 keyval=0;
- SystemInit();
- delay_init();
- AD9833_Init_GPIO();
- OLED_Init();
- OLED_Clear();
-
- // LCD_set_XY(0,0);
- // LCD_write_str("Signal");
- // LCD_set_XY(0,1);
- // LCD_write_str(" Generator");
- // LCD_set_XY(0,3);
- // LCD_write_str("Sin");
- // LCD_set_XY(0,4);
- // LCD_write_str("Square");
- // LCD_set_XY(0,5);
- // LCD_write_str("Sawtooth");
- OLED_ShowString(0,0,"SIGNAL CREATER",24);
- OLED_ShowString(0,3,"Sin",24);
- OLED_ShowString(0,4,"Square",24);
- OLED_ShowString(0,5,"Sawtooth",24);
- delay_ms(200);
- while(1)
- {
- keyval=HL_Scan();
- switch(keyval)
- {
- case 13:
- flag=1;
- break;
- case 14:
- flag=2;
- break;
- case 15:
- flag=3;
- break;
- }
- source_creat(flag);
- flag=0;
- }
- }
所有资料51hei提供下载:
AD9833(4X4键盘控制).7z
(194.59 KB, 下载次数: 63)
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