关于STM32的可编程电压检测器的使用方法
思维导图总览：
代码：
1 #include "sys.h"
2 #include "delay.h"
3 #include "usart.h"
4 #include "led.h"
5 #include "oled.h"
6 #include "24cxx.h"
7 #include "w25qxx.h"
8
9 #include "key.h"
10 #include "adc.h"
11 #include "npa.h"
12 #include "bluetooth.h"
13 #include "rtc.h"
14
15 const u8 TEXT_Buffer[]={"SPI3 TEST"};
16
17 const u8 AT_Buffer[]={"AT
"};
18 #define SIZE sizeof(TEXT_Buffer)
19 #define At_SIZE sizeof(AT_Buffer)
20
21 void PVD_Config(void);
22 int main(void)
23 {
24 PVD_Config();
25
26 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置系统中断优先级分组2
27 delay_init(168); //初始化延时函数
28 //uart_init(115200); //初始化串口波特率为115200
29 //AT24CXX_Init();
30 LED_Init(); //初始化LED
31 oled_init();
32 //W25QXX_Init();
33 KEY_Init();
34 //Adc_Init();
35 // NPAsensor_Bar_Init();
36 LED_Init();
37 LED0=1;
38 //My_RTC_Init(); //初始化RTC
39 //RTC_Set_WakeUp(RTC_WakeUpClock_CK_SPRE_16bits,0); //配置WAKE UP中断,1秒钟中断一次
40
41 //BLUT_Init();
42 //BLUT_SW=0;
43
44
45 //oled_memery_clear(0x00);
46 oled_display_chs((unsigned char *)"ok:",0,0,16,0);
47 oled_display_refresh();
48
49
50
51
52
53 while(1)
54 {
55
56 if(PWR_GetFlagStatus(PWR_FLAG_PVDO)==RESET)
57 {
58 oled_display_chs((unsigned char *)"reset:",0,32,16,0);
59 oled_display_refresh();
60 }
61 else
62 {
63 oled_display_chs((unsigned char *)"set:",0,46,16,0);
64 oled_display_refresh();
65 }
66 }
67 }
68 /**
69 00083 * @brief Configures the PVD resources.
70 00084 * @param None
71 00085 * @retval None
72 00086 */
73 void PVD_Config(void)
74 {
75 NVIC_InitTypeDef NVIC_InitStructure;
76 EXTI_InitTypeDef EXTI_InitStructure;
77
78 /* Enable PWR clock */
79 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
80
81 /* Configure one bit for preemption priority */
82 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
83
84 /* Enable the PVD Interrupt */
85 NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn;
86 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
87 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
88 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
89 NVIC_Init(&NVIC_InitStructure);
90 /* Configure EXTI Line16(PVD Output) to generate an interrupt on rising and
91 falling edges */
92 EXTI_ClearITPendingBit(EXTI_Line16);
93 EXTI_InitStructure.EXTI_Line = EXTI_Line16;
94 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
95 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;//change EXTI_Trigger_Rising_Falling
96 EXTI_InitStructure.EXTI_LineCmd = ENABLE;
97 EXTI_Init(&EXTI_InitStructure);
98
99 /* Configure the PVD Level to 3 (PVD detection level set to 2.5V, refer to the
100 electrical characteristics of you device datasheet for more details) */
101 PWR_PVDLevelConfig(PWR_PVDLevel_5);
102
103 /* Enable the PVD Output */
104 PWR_PVDCmd(ENABLE);
105 }
106
107 /******************************************************************************/
108 /* STM32F4xx Peripherals Interrupt Handlers */
109 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
110 /* available peripheral interrupt handler's name please refer to the startup */
111 /* file (startup_stm32f40xx.s.startup_stm32f427x.s). */
112 /******************************************************************************/
113
114 /**
115 * @brief This function handles the PVD Output interrupt request.
116 * @param None
117 * @retval None
118 */
119 void PVD_IRQHandler(void)
120 {
121 if(EXTI_GetITStatus(EXTI_Line16) != RESET)
122 {
123 /* Toggle LED1 */
124 // STM_EVAL_LEDToggle(LED1);
125 LED0=0;
126 oled_display_chs((unsigned char *)"low",0,16,16,0);
127 oled_display_refresh();
128
129
130
131 /* Clear the Key Button EXTI line pending bit */
132 EXTI_ClearITPendingBit(EXTI_Line16);
133 }
134 }
来源自 STM32官方的帮助文档，这部分资料在帮助文档中都有，而且有代码