做一个C++程序,生成一个24C02的二进制测试向量,
时间: 2024-04-30 09:18:03 浏览: 12
以下是一个简单的C程序,用于生成24C02 EEPROM的测试向量。它将在控制台上输出16个十六进制数,每个数占2个字节,共32个字节。
```c
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MAX 255
int main()
{
srand(time(NULL)); // 初始化随机数种子
// 生成16个随机数
int i, data[16];
for(i=0; i<16; i++)
{
data[i] = rand() % (MAX+1);
}
// 输出测试向量
printf("Test vector:\n");
for(i=0; i<16; i++)
{
printf("%02X%02X ", i, data[i]); // 每个数占2个字节,共32个字节
}
printf("\n");
return 0;
}
```
注意,此程序只是一个简单的例子,生成的测试向量可能不适用于所有情况。在实际应用中,您需要根据具体情况设计更适合的测试向量。
相关问题
做一个C++程序,生成24C02的测试向量
我理解你的意思是要编写一个 C 程序,用于生成 24C02 EEPROM 的测试向量,是吗?如果是的话,下面是一个简单的示例程序,可以为你提供一些帮助。
```c
#include <stdio.h>
#define PAGE_SIZE 16
#define EEPROM_SIZE 256
int main() {
int i, j;
unsigned char eeprom[EEPROM_SIZE];
// Initialize EEPROM with random data
for (i = 0; i < EEPROM_SIZE; i++) {
eeprom[i] = rand() % 256;
}
// Print out the test vectors
for (i = 0; i < EEPROM_SIZE / PAGE_SIZE; i++) {
printf("Page %d:\n", i);
for (j = 0; j < PAGE_SIZE; j++) {
printf("%02X ", eeprom[i * PAGE_SIZE + j]);
}
printf("\n");
}
return 0;
}
```
上面这个程序使用了 C 标准库中的 rand() 函数,生成了一个随机的 EEPROM 数据。然后它遍历 EEPROM 中的每个页面,并将每个页面中的字节打印为十六进制数。你可以将输出复制到测试向量文档中,作为测试向量使用。请注意,由于 EEPROM 中的数据是可编程的,因此你可以使用任何你想要的数据来进行测试。
写一个mx6ull 的linux 24c02 驱动
下面是一个简单的 MX6ULL Linux 24C02 EEPROM 驱动框架,仅供参考:
```c
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/device.h>
#include <linux/err.h>
#define EEPROM_ADDR 0x50
#define EEPROM_PAGE_SIZE 8
/* MX6ULL 24C02 EEPROM 驱动数据结构体 */
struct mx6ull_eeprom {
struct i2c_client *client;
u8 *buffer;
};
/* MX6ULL 24C02 EEPROM 驱动读函数 */
static int mx6ull_eeprom_read(struct i2c_client *client, u16 addr, u8 *buffer, u32 count)
{
struct i2c_msg msg[2];
u8 addr_buf[2];
int ret;
addr_buf[0] = addr >> 8;
addr_buf[1] = addr & 0xFF;
msg[0].addr = client->addr;
msg[0].flags = 0;
msg[0].len = 2;
msg[0].buf = addr_buf;
msg[1].addr = client->addr;
msg[1].flags = I2C_M_RD;
msg[1].len = count;
msg[1].buf = buffer;
ret = i2c_transfer(client->adapter, msg, 2);
if (ret == 2)
return 0;
return -EIO;
}
/* MX6ULL 24C02 EEPROM 驱动写函数 */
static int mx6ull_eeprom_write(struct i2c_client *client, u16 addr, const u8 *buffer, u32 count)
{
struct i2c_msg msg;
u8 *buf;
int ret, wrote = 0;
buf = kmalloc(EEPROM_PAGE_SIZE + 2, GFP_KERNEL);
if (!buf)
return -ENOMEM;
while (count > 0) {
u32 chunk_size = min_t(u32, count, EEPROM_PAGE_SIZE);
buf[0] = addr >> 8;
buf[1] = addr & 0xFF;
memcpy(&buf[2], buffer + wrote, chunk_size);
msg.addr = client->addr;
msg.flags = 0;
msg.len = chunk_size + 2;
msg.buf = buf;
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret != 1) {
kfree(buf);
return -EIO;
}
msleep(5);
addr += chunk_size;
wrote += chunk_size;
count -= chunk_size;
}
kfree(buf);
return 0;
}
/* MX6ULL 24C02 EEPROM 驱动读取函数 */
static ssize_t mx6ull_eeprom_read_from_eeprom(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
struct mx6ull_eeprom *eeprom = file->private_data;
int ret;
if (*ppos + count > 256)
return -EINVAL;
mutex_lock(&eeprom->client->dev.mutex);
ret = mx6ull_eeprom_read(eeprom->client, *ppos, eeprom->buffer, count);
if (ret == 0) {
if (copy_to_user(buf, eeprom->buffer, count))
ret = -EFAULT;
else
*ppos += count;
}
mutex_unlock(&eeprom->client->dev.mutex);
return ret;
}
/* MX6ULL 24C02 EEPROM 驱动写入函数 */
static ssize_t mx6ull_eeprom_write_to_eeprom(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
struct mx6ull_eeprom *eeprom = file->private_data;
int ret;
if (*ppos + count > 256)
return -EINVAL;
if (copy_from_user(eeprom->buffer, buf, count))
return -EFAULT;
mutex_lock(&eeprom->client->dev.mutex);
ret = mx6ull_eeprom_write(eeprom->client, *ppos, eeprom->buffer, count);
if (ret == 0)
*ppos += count;
mutex_unlock(&eeprom->client->dev.mutex);
return ret;
}
/* MX6ULL 24C02 EEPROM 驱动文件操作结构体 */
static const struct file_operations mx6ull_eeprom_fops = {
.owner = THIS_MODULE,
.read = mx6ull_eeprom_read_from_eeprom,
.write = mx6ull_eeprom_write_to_eeprom,
};
/* MX6ULL 24C02 EEPROM 驱动设备树匹配列表 */
static const struct of_device_id mx6ull_eeprom_of_match[] = {
{ .compatible = "fsl,imx6ull-eeprom", },
{},
};
MODULE_DEVICE_TABLE(of, mx6ull_eeprom_of_match);
/* MX6ULL 24C02 EEPROM 驱动 I2C 设备 ID 列表 */
static const struct i2c_device_id mx6ull_eeprom_id[] = {
{ "mx6ull-eeprom", 0 },
{},
};
MODULE_DEVICE_TABLE(i2c, mx6ull_eeprom_id);
/* MX6ULL 24C02 EEPROM 驱动匹配函数 */
static int mx6ull_eeprom_driver_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct mx6ull_eeprom *eeprom;
struct device *dev;
int ret;
/* 分配 MX6ULL 24C02 EEPROM 驱动数据结构体 */
eeprom = devm_kzalloc(&client->dev, sizeof(struct mx6ull_eeprom), GFP_KERNEL);
if (!eeprom)
return -ENOMEM;
/* 初始化 MX6ULL 24C02 EEPROM 驱动数据结构体 */
eeprom->client = client;
eeprom->buffer = kmalloc(EEPROM_PAGE_SIZE, GFP_KERNEL);
if (!eeprom->buffer)
return -ENOMEM;
/* 注册 MX6ULL 24C02 EEPROM 驱动文件节点 */
dev = &client->dev;
if (!devm_create_file(dev, &dev_attr_eeprom)) {
dev_err(dev, "failed to create sysfs entry\n");
return -ENOMEM;
}
/* 注册 MX6ULL 24C02 EEPROM 驱动文件操作结构体 */
ret = alloc_chrdev_region(&eeprom->devno, 0, 1, "mx6ull-eeprom");
if (ret < 0)
return ret;
cdev_init(&eeprom->cdev, &mx6ull_eeprom_fops);
eeprom->cdev.owner = THIS_MODULE;
ret = cdev_add(&eeprom->cdev, eeprom->devno, 1);
if (ret < 0)
goto out_unregister_region;
device_create(mx6ull_eeprom_class, NULL, eeprom->devno, NULL, "mx6ull-eeprom");
i2c_set_clientdata(client, eeprom);
return 0;
out_unregister_region:
unregister_chrdev_region(eeprom->devno, 1);
return ret;
}
/* MX6ULL 24C02 EEPROM 驱动移除函数 */
static int mx6ull_eeprom_driver_remove(struct i2c_client *client)
{
struct mx6ull_eeprom *eeprom = i2c_get_clientdata(client);
device_destroy(mx6ull_eeprom_class, eeprom->devno);
cdev_del(&eeprom->cdev);
unregister_chrdev_region(eeprom->devno, 1);
kfree(eeprom->buffer);
return 0;
}
/* MX6ULL 24C02 EEPROM 驱动 I2C 设备结构体 */
static struct i2c_driver mx6ull_eeprom_driver = {
.driver = {
.name = "mx6ull-eeprom",
.of_match_table = mx6ull_eeprom_of_match,
},
.probe = mx6ull_eeprom_driver_probe,
.remove = mx6ull_eeprom_driver_remove,
.id_table = mx6ull_eeprom_id,
};
module_i2c_driver(mx6ull_eeprom_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("MX6ULL 24C02 EEPROM Driver");
```
当然,以上代码只是一个简单的框架,具体的实现还需要根据具体的硬件平台和 24C02 EEPROM 来进行相应的修改和实现。
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