请你根据我给你的KS106的说明书，写stm32f103与KS106进行RS485通讯的驱动程序，包括.c和.h以及main，你需要给我这三个程序，实现stm32接收KS106读到的数据

好的，以下是基于STM32F103与KS106进行RS485通讯的完整驱动程序，包括`.h`文件、`.c`文件和`main`函数。这些代码实现了STM32接收KS106读到的数据的功能。

### `ks106_rs485.h`

#ifndef __KS106_RS485_H__
#define __KS106_RS485_H__

#include "stm32f10x.h"

#define KS106_ADDRESS 0xE8
#define RS485_BAUD_RATE 9600

void KS106_RS485_Init(void);
uint16_t KS106_ReadDistance(void);

#endif /* __KS106_RS485_H__ */

### `ks106_rs485.c`

#include "ks106_rs485.h"
#include "usart.h"
#include "delay.h"

// UART1 initialization for RS485 communication
void USART1_RS485_Init(uint32_t baudrate) {
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    // Enable GPIOA and USART1 clocks
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

    // Configure USART1 Tx (PA9) as alternate function push-pull
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // Configure USART1 Rx (PA10) as input floating
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // Configure USART1
    USART_InitStructure.USART_BaudRate = baudrate;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStructure);

    // Enable USART1
    USART_Cmd(USART1, ENABLE);
}

// Send a byte over RS485
void RS485_SendByte(uint8_t data) {
    while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    USART_SendData(USART1, data);
}

// Read a byte from RS485
uint8_t RS485_ReadByte(void) {
    while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
    return USART_ReceiveData(USART1);
}

// Initialize RS485 communication with KS106
void KS106_RS485_Init(void) {
    USART1_RS485_Init(RS485_BAUD_RATE);
}

// Read distance from KS106
uint16_t KS106_ReadDistance(void) {
    uint8_t high_byte, low_byte;
    uint16_t distance;

    // Send command to read distance
    RS485_SendByte(KS106_ADDRESS << 1);  // Write address
    RS485_SendByte(0x02);                // Register 2
    RS485_SendByte(0x30);                // Command 0x30

    // Wait for response
    delay_ms(1);

    // Read high byte
    RS485_SendByte((KS106_ADDRESS << 1) | 1);  // Read address
    high_byte = RS485_ReadByte();

    // Read low byte
    low_byte = RS485_ReadByte();

    // Combine bytes to form distance
    distance = (high_byte << 8) | low_byte;

    return distance;
}

### `main.c`

#include "stm32f10x.h"
#include "ks106_rs485.h"
#include "delay.h"

int main(void) {
    // Initialize system clock
    SystemInit();

    // Initialize RS485 communication with KS106
    KS106_RS485_Init();

    while (1) {
        // Read distance from KS106
        uint16_t distance = KS106_ReadDistance();

        // Display or process the distance value
        // For example, print the distance using UART
        // printf("Distance: %d mm\r\n", distance);

        // Delay before next reading
        delay_ms(500);
    }
}

### 说明

1. **`ks106_rs485.h`**:
- 包含了必要的头文件和宏定义。
- 声明了初始化和读取距离的函数。

2. **`ks106_rs485.c`**:
- 实现了USART1的初始化，用于RS485通信。
- 提供了发送和接收字节的函数。
- 实现了初始化RS485通信和读取距离的函数。

3. **`main.c`**:
- 初始化系统时钟和RS485通信。
- 在主循环中不断读取KS106的距离值，并进行处理（例如打印）。

请确保您的项目中包含了必要的库文件（如`usart.h`和`delay.h`），并且已经正确配置了STM32的硬件资源。希望这些代码对您有所帮助！