用了黄山i2c代码https://wiki.lckfb.com/zh-hans/hspi-sf32lb52/lckfb-hspi-sf32lb52/iic.html，编译问题
请提供更多的上下文：
- 你使用的是什么SDK版本
- 代码是否有过修改
- 你使用的操作系统是什么
#include "bf0_hal.h"
#include "board.h"
#include "drv_io.h"
#include "rtthread.h"
#include "stdbool.h"
#include "stdio.h"
#include "string.h"
#define DBG_TAG "i2c_example"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>
static struct rt_i2c_bus_device* i2c_bus = NULL;
static const uint8_t AW32001_ADDRESS = 0x49; // 7-bit I2C address for AW32001
static const char* I2C_BUS_NAME = "i2c2";
static bool i2c_init(struct rt_i2c_bus_device** bus)
{
*bus = rt_i2c_bus_device_find(I2C_BUS_NAME);
if (*bus == RT_NULL)
{
LOG_E("I2C bus not found");
return false;
}
rt_kprintf("I2C bus found success\n");
rt_device_open((rt_device_t) (*bus), RT_DEVICE_FLAG_RDWR);
rt_kprintf("I2C bus opened success\n");
struct rt_i2c_configuration configuration = {
.mode = 0,
.addr = 0,
.timeout = 500, // Waiting for timeout period (ms)
.max_hz = 400000, // I2C rate (hz)
};
rt_i2c_configure(*bus, &configuration);
rt_kprintf("I2C bus configured success\n");
return true;
}
static void scan_i2c_devices(struct rt_i2c_bus_device** bus)
{
rt_uint8_t buf[1];
struct rt_i2c_msg msg;
msg.addr = AW32001_ADDRESS;
msg.flags = RT_I2C_RD; /* 读标志，底层会先发从机地址 + R/W = R */
msg.buf = buf; /* 接收一个字节（不用在意接收到的值）*/
msg.len = 1;
for (rt_uint8_t addr = 0x03; addr <= 0x77; addr++)
{
/* 只做一次字节的读操作来检测 ACK */
msg.addr = addr;
msg.flags = RT_I2C_RD; /* 读标志，底层会先发从机地址 + R/W = R */
msg.buf = buf; /* 接收一个字节（不用在意接收到的值）*/
msg.len = 1;
rt_int32_t ret = rt_i2c_transfer(*bus, &msg, 1);
if (ret == 1)
{
/* 设备有响应 */
rt_kprintf("Find I2C device at address 0x%02X\n", addr);
}
}
}
static void read_chip_id(struct rt_i2c_bus_device** bus)
{
rt_uint8_t buf[1];
struct rt_i2c_msg msg;
rt_int32_t ret;
msg.addr = AW32001_ADDRESS;
msg.flags = RT_I2C_WR;
msg.buf = buf;
msg.len = 1;
buf[0] = 0x0A; // AW32001 chip ID register address
ret = rt_i2c_transfer(*bus, &msg, 1);
if (ret != 1)
{
LOG_E("Failed to write to I2C device");
return;
}
msg.flags = RT_I2C_RD;
ret = rt_i2c_transfer(*bus, &msg, 1);
if (ret != 1)
{
LOG_E("Failed to read from I2C device");
return;
}
rt_kprintf("AW32001 chip ID: 0x%02X\n", buf[0]);
}
static void read_chip_id_simple(struct rt_i2c_bus_device** bus)
{
rt_uint8_t buf[1];
rt_int32_t ret = rt_i2c_mem_read(*bus, AW32001_ADDRESS, 0x0A, 8, buf, 1);
if (ret != 1)
{
LOG_E("Failed to read from I2C device");
return;
}
rt_kprintf("AW32001 chip ID: 0x%02X\n", buf[0]);
}
static void write_charge_current(struct rt_i2c_bus_device** bus, uint8_t current)
{
const uint8_t CHARGE_CURRENT_ADDRESS = 0x02;
rt_uint8_t buf[1];
rt_int32_t ret;
ret = rt_i2c_mem_read(*bus, AW32001_ADDRESS, CHARGE_CURRENT_ADDRESS, 8, buf, 1);
if (ret != 1)
{
LOG_E("Failed to read from I2C device");
return;
}
// current: bit0-bit5
buf[0] = (buf[0] & 0xC0) | (current & 0x3F);
ret = rt_i2c_mem_write(*bus, AW32001_ADDRESS, CHARGE_CURRENT_ADDRESS, 8, buf, 1);
if (ret != 1)
{
LOG_E("Failed to write to I2C device");
return;
}
rt_kprintf("AW32001 charge current set to: 0x%02X\n", buf[0]);
}
/**
* @brief Main program
* @param None
* @retval 0 if success, otherwise failure number
*/
int main(void)
{
/* Output a message on console using printf function */
rt_kprintf("Hello world!\n");
if (i2c_init(&i2c_bus) == false)
{
LOG_E("I2C initialization failed");
return -1;
}
if (i2c_bus == RT_NULL)
{
LOG_E("I2C bus not found");
return false;
}
scan_i2c_devices(&i2c_bus);
read_chip_id(&i2c_bus);
read_chip_id_simple(&i2c_bus);
uint8_t charge_current = 0;
/* Infinite loop */
while (1)
{
charge_current++;
if (charge_current > 0x1F)
{
charge_current = 0;
}
write_charge_current(&i2c_bus, charge_current);
rt_thread_mdelay(100);
}
return 0;
}
未复现，建议提供最小复现工程