STM32单片机读写24位ADC_AD7190称重模块带液晶显示例程DEMO源码文件，可做为你的学习设计参考。 int main(void) { uint32_t lcdid; float data_temp; int32_t weight_count; uint8_t cali_flag=0; char str[50]; /* 复位所有外设，初始化Flash接口和系统滴答定时器 */ HAL_Init(); /* 配置系统时钟 */ SystemClock_Config(); /* 初始化串口并配置串口中断优先级 */ MX_DEBUG_USART_Init(); KEY_GPIO_Init(); /* 初始化3.5寸TFT液晶模组，一般优先于调试串口初始化 */ lcdid=BSP_LCD_Init(); /* 调用格式化输出函数打印输出数据 */ printf("LCD ID=0x%08X\n",lcdid); LCD_Clear(0,0,LCD_DEFAULT_WIDTH,LCD_DEFAULT_HEIGTH,BLACK); HAL_Delay(1000); /* 开背光 */ LCD_BK_ON(); if(AD7190_Init()==0) { printf("获取不到 AD7190 !\n"); while(1) { HAL_Delay(1000); if(AD7190_Init()) break; } } printf("检测到 AD7190 !\n"); weight_ad7190_conf(); HAL_Delay(500); weight_Zero_Data = weight_ad7190_ReadAvg(6); printf("zero:%d\n",weight_Zero_Data); /* 无限循环 */ while (1) { weight_count=weight_ad7190_ReadAvg(6); data_temp=weight_count-weight_Zero_Data; weight=data_temp*1000/weight_proportion; printf("重量：0x%5X->%f\n",weight_count,weight); sprintf(str,"0x%5X",weight_count); LCD_DispString_EN(190,80,str,BLACK,RED,USE_FONT_24); sprintf(str,"%0.2fg",weight); LCD_Clear(140,100,300,64,BLACK); LCD_DispString_EN(140,100,str,BLACK,YELLOW,USE_FONT_64); HAL_Delay(100); if(KEY1_StateRead()==KEY_DOWN) // 清零 { weight_Zero_Data = weight_ad7190_ReadAvg(6); printf("zero:%d\n",weight_Zero_Data); cali_flag=1; } if(KEY2_StateRead()==KEY_DOWN) // 校准：必须先按“清零”键，然后把20g砝码放在称上，按下校准键 { if(cali_flag) { weight_count = weight_ad7190_ReadAvg(6); weight_proportion=(weight_count-weight_Zero_Data)*1000/100; printf("weight_proportion:%d\n",weight_proportion); } cali_flag=0; } }