编写stm32f103c6t6用LCD1602显示数字的代码

好的，以下是使用stm32f103c6t6控制LCD1602显示数字的代码，供参考：

#include "stm32f10x.h"
#include "delay.h"

void LCD_Init(void);
void LCD_Write_Command(uint8_t command);
void LCD_Write_Data(uint8_t data);
void LCD_Write_String(char* string);
void LCD_Clear(void);
void LCD_Set_Cursor(uint8_t row, uint8_t column);

int main(void)
{
    SystemInit();
    SysTick_Init();

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // Enable GPIOA clock

    GPIO_InitTypeDef GPIO_InitStructure;

    // Configure PA0-PA5 as push-pull outputs
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    LCD_Init(); // Initialize LCD

    while(1)
    {
        LCD_Set_Cursor(0, 0); // Set cursor to first row, first column
        LCD_Write_String("Counter:"); // Write string to LCD
        LCD_Set_Cursor(1, 0); // Set cursor to second row, first column
        LCD_Write_Data('0'); // Write data to LCD
        Delay_ms(1000); // Delay for 1 second
    }
}

void LCD_Init(void)
{
    LCD_Write_Command(0x38); // Initialize 8-bit mode
    LCD_Write_Command(0x0C); // Turn on display, cursor, and blink
    LCD_Write_Command(0x01); // Clear display
    LCD_Write_Command(0x06); // Set direction of entry
}

void LCD_Write_Command(uint8_t command)
{
    GPIO_ResetBits(GPIOA, GPIO_Pin_0); // Set RS pin to 0
    GPIO_Write(GPIOA, (command << 2)); // Write command to data pins
    GPIO_SetBits(GPIOA, GPIO_Pin_1); // Set EN pin to 1
    Delay_us(1); // Delay for 1us
    GPIO_ResetBits(GPIOA, GPIO_Pin_1); // Set EN pin to 0
    Delay_ms(1); // Delay for 1ms
}

void LCD_Write_Data(uint8_t data)
{
    GPIO_SetBits(GPIOA, GPIO_Pin_0); // Set RS pin to 1
    GPIO_Write(GPIOA, (data << 2)); // Write data to data pins
    GPIO_SetBits(GPIOA, GPIO_Pin_1); // Set EN pin to 1
    Delay_us(1); // Delay for 1us
    GPIO_ResetBits(GPIOA, GPIO_Pin_1); // Set EN pin to 0
    Delay_ms(1); // Delay for 1ms
}

void LCD_Write_String(char* string)
{
    while(*string) // Loop through each character in string
    {
        LCD_Write_Data(*string++); // Write character to LCD
    }
}

void LCD_Clear(void)
{
    LCD_Write_Command(0x01); // Clear display
}

void LCD_Set_Cursor(uint8_t row, uint8_t column)
{
    uint8_t address = (row * 0x40) + column; // Calculate address of cursor
    LCD_Write_Command(0x80 | address); // Set cursor to address
}

在这个例子中，我们使用PA0-PA5（即D0-D5）控制LCD1602，PA0作为RS，PA1作为EN。我们使用delay.h中的延迟函数来控制LCD的操作时间。在main函数中，我们设置LCD光标，写入字符串“Counter:”，然后设置光标到第二行第一列，写入数字0。最后我们使用1秒的延迟，然后重复这个过程。

当然，这只是一个例子，你可以根据自己的需求修改代码。同时，为了让代码更加易懂，我建议你在使用之前先阅读LCD1602的数据手册。