学校违纪分数记录，按键，1.3寸OLED显示，数据掉电保存
1、项目简介
2、实现逻辑
#如上图为显示屏显示内容
#三个物理按键，一个是选择对哪一项进行控制，两个是加减对应项的分数
#控制范围±10，精度0.1
#对所有分数进行求和运算然后显示
#将所有数据保存到单片机flash
3、应用场景
#对学生违纪情况进行记录
4、核心代码梳理
int8_t big_small(int32_t value, uint8_t handle)
{
if(handle)//++
{
if(value < 100)
value++;
}
else//--
{
if(value > -100)
value--;
}
return value;
}
uint32_t addr = 0x08007000;
//FLASH写入数据测试
void writeFlashTest(void)
{
//1、解锁FLASH
HAL_FLASH_Unlock();
//2、擦除FLASH
//初始化FLASH_EraseInitTypeDef
FLASH_EraseInitTypeDef f;
f.TypeErase = FLASH_TYPEERASE_PAGES;
f.PageAddress = addr;
f.NbPages = 1;
//设置PageError
uint32_t PageError = 0;
//调用擦除函数
HAL_FLASHEx_Erase(&f, &PageError);
//3、对FLASH烧写
HAL_FLASH_Program(TYPEPROGRAM_WORD, addr, Wei_Ji);
HAL_FLASH_Program(TYPEPROGRAM_WORD, addr+10, SuShe_WeiSheng);
HAL_FLASH_Program(TYPEPROGRAM_WORD, addr+20, JiaoShi_WeiSheng);
HAL_FLASH_Program(TYPEPROGRAM_WORD, addr+30, Pao_Cao);
//4、锁住FLASH
HAL_FLASH_Lock();
}
OLED_Init();
OLED_ColorTurn(0);//0正常显示，1 反色显示
OLED_DisplayTurn(0);//0正常显示 1 屏幕翻转显示
OLED_Refresh();
OLED_Clear();
//OLED_ShowString(0,0," weiji: . C ",16);
OLED_ShowChinese(2,0,0,16); //一个汉字横15个格 冒号加12 竖加16
OLED_ShowChinese(17,0,1,16);
OLED_ShowChinese(29,0,2,16);
OLED_ShowChinese(2,16,3,16);
OLED_ShowChinese(17,16,4,16);
OLED_ShowChinese(32,16,7,16);
OLED_ShowChinese(47,16,8,16);
OLED_ShowChinese(59,16,2,16);
OLED_ShowChinese(2,32,5,16);
OLED_ShowChinese(17,32,6,16);
OLED_ShowChinese(32,32,7,16);
OLED_ShowChinese(47,32,8,16);
OLED_ShowChinese(59,32,2,16);
OLED_ShowChinese(2,48,9,16);
OLED_ShowChinese(17,48,10,16);
OLED_ShowChinese(29,48,2,16);
OLED_ShowChinese(70,48,11,16);
OLED_ShowChinese(85,48,12,16);
OLED_ShowChinese(97,48,2,16);
OLED_Refresh();
Wei_Ji = *(__IO uint32_t*)(addr);
SuShe_WeiSheng = *(__IO uint32_t*)(addr+10);
JiaoShi_WeiSheng = *(__IO uint32_t*)(addr+20);
Pao_Cao = *(__IO uint32_t*)(addr+30);
writeFlashTest();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_Delay(5);
if(!HAL_GPIO_ReadPin(GPIOA, SET_Pin))
set_a++;
else
set_a = 0;
if(!HAL_GPIO_ReadPin(GPIOB, BIG_Pin))
big_a++;
else
big_a = 0;
if(!HAL_GPIO_ReadPin(GPIOB, SMALL_Pin))
small_a++;
else
small_a = 0;
if(set_a==5)
{
set_a = 0;
set_num++;
set_num = set_num%5;
}
if(big_a==5)
{
big_a = 0;
if(set_num == 1)
Wei_Ji = big_small(Wei_Ji, 1);
else if(set_num == 2)
SuShe_WeiSheng = big_small(SuShe_WeiSheng, 1);
else if(set_num == 3)
JiaoShi_WeiSheng = big_small(JiaoShi_WeiSheng, 1);
else if(set_num == 4)
Pao_Cao = big_small(Pao_Cao, 1);
writeFlashTest();
}
if(small_a==5)
{
small_a = 0;
if(set_num == 1)
Wei_Ji = big_small(Wei_Ji, 0);
else if(set_num == 2)
SuShe_WeiSheng = big_small(SuShe_WeiSheng, 0);
else if(set_num == 3)
JiaoShi_WeiSheng = big_small(JiaoShi_WeiSheng, 0);
else if(set_num == 4)
Pao_Cao = big_small(Pao_Cao, 0);
writeFlashTest();
}
if(set_num == 0)
{
OLED_ShowChinese(29,0,2,16);
OLED_ShowChinese(59,16,2,16);
OLED_ShowChinese(59,32,2,16);
OLED_ShowChinese(29,48,2,16);
}
else if(set_num == 1)
{
OLED_ShowString(29,0,".",12);
OLED_ShowChinese(59,16,2,16);
OLED_ShowChinese(59,32,2,16);
OLED_ShowChinese(29,48,2,16);
}
else if(set_num == 2)
{
OLED_ShowChinese(29,0,2,16);
OLED_ShowString(59,16,".",12);
OLED_ShowChinese(59,32,2,16);
OLED_ShowChinese(29,48,2,16);
}
else if(set_num == 3)
{
OLED_ShowChinese(29,0,2,16);
OLED_ShowChinese(59,16,2,16);
OLED_ShowString(59,32,".",12);
OLED_ShowChinese(29,48,2,16);
}
else if(set_num == 4)
{
OLED_ShowChinese(29,0,2,16);
OLED_ShowChinese(59,16,2,16);
OLED_ShowChinese(59,32,2,16);
OLED_ShowString(29,48,".",12);
}
SUM = Wei_Ji+SuShe_WeiSheng+JiaoShi_WeiSheng+Pao_Cao;
OLED_ShowMY(45,2,Wei_Ji);
OLED_ShowMY(75,18,SuShe_WeiSheng);
OLED_ShowMY(75,34,JiaoShi_WeiSheng);
OLED_ShowMY(45,50,Pao_Cao);
OLED_ShowMY(106,50,SUM);
OLED_Refresh();
}
5、部分参考资料
#oled资料
#hal库的flash操作
6、注意事项
#注意oled的通信协议（可以通过0欧姆电阻选择），程序中未列出
#按键检测未列出
