stm32f103c8t60.96oled显示屏llc四脚显示光照值代码

以下是基于STM32F103C8T6和0.96寸OLED屏幕的LLC四脚光照值显示代码，使用了ADC和I2C通信协议：

首先需要初始化ADC和I2C：

#include "stm32f10x.h"
#include "oled.h"

void Adc_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    ADC_InitTypeDef ADC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    RCC_ADCCLKConfig(RCC_PCLK2_Div6);

    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);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);

    ADC_Cmd(ADC1, ENABLE);

    ADC_ResetCalibration(ADC1);

    while(ADC_GetResetCalibrationStatus(ADC1));

    ADC_StartCalibration(ADC1);

    while(ADC_GetCalibrationStatus(ADC1));

    ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}

void I2C_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    I2C_InitTypeDef I2C_InitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = 0;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    I2C_InitStructure.I2C_ClockSpeed = 400000;
    I2C_Init(I2C2, &I2C_InitStructure);

    I2C_Cmd(I2C2, ENABLE);
}

然后是LLC四脚光照值显示的代码：

int main(void)
{
    uint16_t adc_value;
    float voltage;
    char light[10];

    Adc_Init();
    I2C_Configuration();
    OLED_Init();

    while(1)
    {
        adc_value = ADC_GetConversionValue(ADC1);
        voltage = (float)adc_value / 4096 * 3.3;
        sprintf(light, "%.2f LUX", voltage * 100);

        OLED_Clear();
        OLED_ShowString(0, 0, "Light:", 16);
        OLED_ShowString(0, 2, light, 16);
        Delay(1000);
    }
}

其中，`ADC_GetConversionValue(ADC1)`获取ADC转换的数值，通过公式`voltage = (float)adc_value / 4096 * 3.3`将数值转换为电压值，再将电压值乘以100得到光照值，最后通过`OLED_ShowString`函数在OLED屏幕上显示光照值。