在keil5上写一个双积分直流电压表采集电压并在OLED屏幕上显示的代码
时间: 2024-04-08 16:34:51 浏览: 182
当然可以!以下是一个在Keil 5上使用STM32示例代码,来实现双积分直流电压表,采集电压并在OLED屏幕上显示:
```c
#include "stm32f4xx.h"
#include "ssd1306.h"
#define VOLTAGE_PIN GPIO_Pin_0
#define VOLTAGE_PORT GPIOA
SSD1306_Dev_t OLED;
float voltage = 0.0;
void ADC_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// 使能 ADC1 时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
// 配置 ADC1 通道11 的引脚
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = VOLTAGE_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(VOLTAGE_PORT, &GPIO_InitStructure);
// ADC1 配置
ADC_DeInit();
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
// 配置 ADC1 的通道11
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_84Cycles);
// 使能 ADC1
ADC_Cmd(ADC1, ENABLE);
// 开始 ADC 转换
ADC_SoftwareStartConv(ADC1);
}
float ADC_GetVoltage(uint16_t ADC_Value)
{
return (ADC_Value * 3.3) / 4096;
}
void OLED_DisplayVoltage(float voltage)
{
char voltage_str[16];
snprintf(voltage_str, sizeof(voltage_str), "Voltage: %.2f V", voltage);
SSD1306_Clear(&OLED);
SSD1306_GotoXY(&OLED, 0, 0);
SSD1306_Puts(&OLED, voltage_str, &Font_7x10, SSD1306_COLOR_WHITE);
SSD1306_UpdateScreen(&OLED);
}
int main(void)
{
SystemInit();
SSD1306_Init(&OLED);
ADC_Config();
while (1)
{
uint16_t ADC_Value = ADC_GetConversionValue(ADC1);
voltage = ADC_GetVoltage(ADC_Value);
OLED_DisplayVoltage(voltage);
}
}
```
请确保你已经将SSD1306 OLED库添加到Keil 5中,并正确连接了OLED屏幕和STM32开发板的引脚。这段代码使用了STM32的ADC模块来采集电压值,并通过SSD1306库来驱动OLED屏幕显示电压值。
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