0.96寸OLED STM32F103程序

以下是一个STM32F103芯片驱动0.96寸OLED屏幕的示例程序，使用SPI协议进行通信。请确保正确连接硬件，并按照注释修改代码中的引脚和SPI口。

#include "stm32f10x.h"
#include "stm32f10x_spi.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"

#define OLED_SPI_PORT       SPI1
#define OLED_SPI_GPIO_PORT  GPIOA
#define OLED_SPI_CS_PIN     GPIO_Pin_4
#define OLED_SPI_SCK_PIN    GPIO_Pin_5
#define OLED_SPI_MOSI_PIN   GPIO_Pin_7

void delay_ms(uint32_t ms)
{
    while (ms--) {
        volatile uint32_t x = 8000;
        while (x--);
    }
}

void OLED_SPI_Init(void)
{
    SPI_InitTypeDef spi_init;

    /* Enable clock for GPIOA and SPI1 */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_SPI1, ENABLE);

    /* Configure SPI GPIO pins */
    GPIO_InitTypeDef gpio_init;
    gpio_init.GPIO_Pin = OLED_SPI_SCK_PIN | OLED_SPI_MOSI_PIN;
    gpio_init.GPIO_Mode = GPIO_Mode_AF_PP;
    gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(OLED_SPI_GPIO_PORT, &gpio_init);

    /* Configure SPI CS pin */
    gpio_init.GPIO_Pin = OLED_SPI_CS_PIN;
    gpio_init.GPIO_Mode = GPIO_Mode_Out_PP;
    gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(OLED_SPI_GPIO_PORT, &gpio_init);
    GPIO_SetBits(OLED_SPI_GPIO_PORT, OLED_SPI_CS_PIN);

    /* Configure SPI */
    SPI_StructInit(&spi_init);
    spi_init.SPI_Mode = SPI_Mode_Master;
    spi_init.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
    spi_init.SPI_CRCPolynomial = 7;
    SPI_Init(OLED_SPI_PORT, &spi_init);

    /* Enable SPI */
    SPI_Cmd(OLED_SPI_PORT, ENABLE);
}

void OLED_Write_Command(uint8_t cmd)
{
    GPIO_ResetBits(OLED_SPI_GPIO_PORT, OLED_SPI_CS_PIN);
    SPI_I2S_SendData(OLED_SPI_PORT, 0x00);
    while (SPI_I2S_GetFlagStatus(OLED_SPI_PORT, SPI_I2S_FLAG_BSY) == SET);
    SPI_I2S_SendData(OLED_SPI_PORT, cmd);
    while (SPI_I2S_GetFlagStatus(OLED_SPI_PORT, SPI_I2S_FLAG_BSY) == SET);
    GPIO_SetBits(OLED_SPI_GPIO_PORT, OLED_SPI_CS_PIN);
}

void OLED_Write_Data(uint8_t data)
{
    GPIO_ResetBits(OLED_SPI_GPIO_PORT, OLED_SPI_CS_PIN);
    SPI_I2S_SendData(OLED_SPI_PORT, 0x01);
    while (SPI_I2S_GetFlagStatus(OLED_SPI_PORT, SPI_I2S_FLAG_BSY) == SET);
    SPI_I2S_SendData(OLED_SPI_PORT, data);
    while (SPI_I2S_GetFlagStatus(OLED_SPI_PORT, SPI_I2S_FLAG_BSY) == SET);
    GPIO_SetBits(OLED_SPI_GPIO_PORT, OLED_SPI_CS_PIN);
}

void OLED_Init(void)
{
    OLED_Write_Command(0xAE);   //display off
    OLED_Write_Command(0xA8);   //set multiplex ratio
    OLED_Write_Command(0x3F);   //1/64 duty
    OLED_Write_Command(0xD3);   //set display offset
    OLED_Write_Command(0x00);
    OLED_Write_Command(0x40);   //set start line
    OLED_Write_Command(0xA0);   //segment remap
    OLED_Write_Command(0xC0);   //COM scan direction
    OLED_Write_Command(0xDA);   //set COM pins
    OLED_Write_Command(0x12);
    OLED_Write_Command(0x81);   //set contrast
    OLED_Write_Command(0xCF);
    OLED_Write_Command(0xD9);   //set precharge period
    OLED_Write_Command(0xF1);
    OLED_Write_Command(0xDB);   //set VCOMH deselect level
    OLED_Write_Command(0x30);
    OLED_Write_Command(0xA4);   //disable display all on
    OLED_Write_Command(0xA6);   //normal display
    OLED_Write_Command(0xAF);   //display on
}

void OLED_Set_Pos(uint8_t x, uint8_t y)
{
    OLED_Write_Command(0xB0 + y);
    OLED_Write_Command(((x & 0xF0) >> 4) | 0x10);
    OLED_Write_Command(x & 0x0F);
}

void OLED_Clear_Screen(void)
{
    uint8_t i, j;
    for (i = 0; i < 8; i++) {
        OLED_Set_Pos(0, i);
        for (j = 0; j < 128; j++) {
            OLED_Write_Data(0x00);
        }
    }
}

void OLED_Show_Char(uint8_t x, uint8_t y, uint8_t ch)
{
    uint8_t i, j;
    ch = ch - ' ';
    OLED_Set_Pos(x, y);
    for (i = 0; i < 6; i++) {
        OLED_Write_Data(Font6x8[ch][i]);
    }
}

void OLED_Show_String(uint8_t x, uint8_t y, char *str)
{
    uint8_t i = 0;
    while (str[i]) {
        OLED_Show_Char(x, y, str[i]);
        x += 6;
        i++;
    }
}

int main(void)
{
    OLED_SPI_Init();
    OLED_Init();
    OLED_Clear_Screen();
    OLED_Show_String(0, 0, "Hello, World!");
    while (1) {
        delay_ms(1000);
    }
}