基于stm32的标准库函数写一个iic协议的0.96寸oled的驱动程序

以下是一个基于STM32标准库函数的IIC协议的0.96寸OLED驱动程序：

#include "stm32f10x.h"

#define OLED_ADDR 0x78
#define OLED_CMD 0x00
#define OLED_DATA 0x40

void delay_ms(uint16_t ms) {
    while (ms--) {
        volatile uint32_t x = 1000;
        while (x--);
    }
}

void IIC_Start(void) {
    GPIOB->BSRR = GPIO_BSRR_BR6;
    GPIOB->BSRR = GPIO_BSRR_BS7;
    delay_ms(1);
}

void IIC_Stop(void) {
    GPIOB->BSRR = GPIO_BSRR_BR7;
    GPIOB->BSRR = GPIO_BSRR_BS6;
    delay_ms(1);
}

void IIC_SendByte(uint8_t data) {
    uint8_t i;
    for (i = 0; i < 8; i++) {
        if ((data << i) & 0x80) {
            GPIOB->BSRR = GPIO_BSRR_BS7;
        } else {
            GPIOB->BSRR = GPIO_BSRR_BR7;
        }
        GPIOB->BSRR = GPIO_BSRR_BS6;
        delay_ms(1);
        GPIOB->BSRR = GPIO_BSRR_BR6;
    }
    GPIOB->BSRR = GPIO_BSRR_BS7;
    GPIOB->BSRR = GPIO_BSRR_BS6;
    delay_ms(1);
}

void OLED_Init(void) {
    IIC_Start();
    IIC_SendByte(OLED_ADDR << 1);
    IIC_SendByte(OLED_CMD);
    IIC_SendByte(0xae); //turn off oled panel
    IIC_SendByte(0xd5);
    IIC_SendByte(0x80); //set display clock divide ratio/oscillator frequency
    IIC_SendByte(0xa8); //set multiplex ratio
    IIC_SendByte(0x3f); //1/64 duty
    IIC_SendByte(0xd3); //set display offset
    IIC_SendByte(0x00);
    IIC_SendByte(0x40); //set start line
    IIC_SendByte(0x8d); //charge pump
    IIC_SendByte(0x14);
    IIC_SendByte(0x20); //set memory mode
    IIC_SendByte(0x00);
    IIC_SendByte(0xa1); //set segment remap
    IIC_SendByte(0xc8); //set com output scan direction
    IIC_SendByte(0xda); //set com pins hardware configuration
    IIC_SendByte(0x12);
    IIC_SendByte(0x81); //set contrast control
    IIC_SendByte(0xcf);
    IIC_SendByte(0xd9); //set pre-charge period
    IIC_SendByte(0xf1);
    IIC_SendByte(0xdb); //set vcomh
    IIC_SendByte(0x40);
    IIC_SendByte(0xa4); //disable entire display on
    IIC_SendByte(0xa6); //set normal display
    IIC_SendByte(0xaf); //turn on oled panel
    IIC_Stop();
}

void OLED_SetPos(uint8_t x, uint8_t y) {
    IIC_Start();
    IIC_SendByte(OLED_ADDR << 1);
    IIC_SendByte(OLED_CMD);
    IIC_SendByte(0xb0 + y);
    IIC_SendByte(((x & 0xf0) >> 4) | 0x10);
    IIC_SendByte((x & 0x0f) | 0x01);
    IIC_Stop();
}

void OLED_Fill(uint8_t dat) {
    uint8_t i, j;
    IIC_Start();
    IIC_SendByte(OLED_ADDR << 1);
    IIC_SendByte(OLED_CMD);
    for (i = 0; i < 8; i++) {
        OLED_SetPos(0, i);
        for (j = 0; j < 128; j++) {
            IIC_SendByte(dat);
        }
    }
    IIC_Stop();
}

void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr) {
    uint8_t i;
    uint8_t c = chr - 32;
    if (x > 120 || y > 7) {
        return;
    }
    IIC_Start();
    IIC_SendByte(OLED_ADDR << 1);
    IIC_SendByte(OLED_CMD);
    OLED_SetPos(x, y);
    for (i = 0; i < 6; i++) {
        IIC_SendByte(F6x8[c][i]);
    }
    IIC_Stop();
}

void OLED_ShowString(uint8_t x, uint8_t y, uint8_t *str) {
    uint8_t i = 0;
    while (str[i] != '\0') {
        OLED_ShowChar(x, y, str[i]);
        x += 6;
        if (x > 122) {
            x = 0;
            y++;
        }
        if (y > 7) {
            break;
        }
        i++;
    }
}

int main(void) {
    RCC->APB2ENR |= RCC_APB2ENR_IOPBEN;
    GPIOB->CRL &= ~GPIO_CRL_CNF6;
    GPIOB->CRL |= GPIO_CRL_MODE6_0;
    GPIOB->CRL &= ~GPIO_CRL_CNF7;
    GPIOB->CRL |= GPIO_CRL_MODE7_0;
    OLED_Init();
    OLED_Fill(0x00);
    OLED_ShowString(0, 0, "Hello World!");
    while (1);
}

这个驱动程序使用了STM32F10x的标准库函数来实现IIC协议的通信，并且可以在0.96寸OLED屏幕上显示字符和字符串。需要注意的是，这个程序中的OLED屏幕地址是0x78，如果你使用的是其他OLED屏幕，可能需要修改这个地址。同时，这个程序中的字符和字符串显示使用了一个6x8的字体，如果你需要显示其他字体，可能需要修改对应的字模表。