stm32oled显示时间
时间: 2023-12-16 19:05:08 浏览: 113
stm32OLED显示
以下是使用STM32和OLED显示时间的步骤:
1. 首先,需要连接STM32和OLED。将OLED的SDA引脚连接到STM32的PB7引脚,将OLED的SCL引脚连接到STM32的PB6引脚。
2. 接下来,需要在STM32上编写代码。首先,需要包含必要的库文件和头文件。例如:
```c
#include "stm32f10x.h"
#include "stm32f10x_i2c.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"
#include "fonts.h"
#include "ssd1306.h"
#include "delay.h"
```
3. 然后,需要初始化I2C总线和OLED。例如:
```c
void I2C_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_Cmd(I2C1, ENABLE);
}
void OLED_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_SetBits(GPIOB, GPIO_Pin_0);
SSD1306_Init();
}
```
4. 接下来,需要编写一个函数来显示时间。例如:
```c
void OLED_ShowTime(void)
{
char time[20];
RTC_TimeTypeDef RTC_TimeStructure;
RTC_DateTypeDef RTC_DateStructure;
RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
RTC_GetDate(RTC_Format_BIN, &RTC_DateStructure);
sprintf(time, "%02d:%02d:%02d", RTC_TimeStructure.RTC_Hours, RTC_TimeStructure.RTC_Minutes, RTC_TimeStructure.RTC_Seconds);
SSD1306_GotoXY(0, 0);
SSD1306_Puts(time, &Font_11x18, 1);
SSD1306_UpdateScreen();
}
```
5. 最后,在主函数中调用上述函数即可。例如:
```c
int main(void)
{
I2C_Configuration();
OLED_Configuration();
while (1)
{
OLED_ShowTime();
Delay_ms(1000);
}
}
```
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