基于stm32f103在一块芯片为ST7789分辨率为172×320的屏幕上输出ADC电压的代码
时间: 2024-05-01 07:16:23 浏览: 14
以下是基于stm32f103的代码,可以在ST7789分辨率为172×320的屏幕上输出ADC电压。
首先需要初始化ADC模块和LCD屏幕:
```c
#include "stm32f10x.h"
#include "stdio.h"
void ADC_Configuration(void);
void LCD_Configuration(void);
int main(void)
{
uint16_t adc_value;
char voltage_str[16];
ADC_Configuration();
LCD_Configuration();
while (1)
{
// Start ADC conversion
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
// Wait for ADC conversion to complete
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
// Read ADC value
adc_value = ADC_GetConversionValue(ADC1);
// Convert ADC value to voltage
float voltage = adc_value * 3.3 / 4095;
// Format voltage as string
sprintf(voltage_str, "Voltage: %.2fV", voltage);
// Display voltage on LCD screen
LCD_DrawString(10, 10, voltage_str, RED);
}
}
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// Enable ADC1 clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
// Configure PA0 as analog input
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Configure ADC1
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
// Configure ADC1 channel 0
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_7Cycles5);
// Enable ADC1
ADC_Cmd(ADC1, ENABLE);
// Calibrate ADC1
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1));
}
void LCD_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
// Enable GPIOA, GPIOB, GPIOC and AFIO clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
// Configure PA5 (SCL) and PA7 (SDA) as alternate function push-pull
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Configure PB0 (RESET) and PB1 (DC) as general purpose output push-pull
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// Configure PC13 (CS) as general purpose output push-pull
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// Initialize LCD screen
LCD_Init();
LCD_Clear(BLACK);
}
```
接下来,我们在主循环中获取ADC值,将其转换为电压,并将电压值显示在LCD屏幕上。
在这个例子中,我们使用了LCD_DrawString函数将电压值显示在屏幕上。您可以根据需要更改此函数,以便在屏幕上绘制图形或其他元素。
请注意,此代码仅适用于基于stm32f103的系统,而且未经过完全测试。在使用此代码之前,请务必仔细阅读代码并进行必要的修改和测试。