Error 0x3: failed to ioctl
时间: 2023-11-14 10:05:20 浏览: 36
I'm sorry, but without more context it is difficult to provide a specific solution for this error message. Can you please provide more information about where and when this error message appears?
相关问题
2-21 17:25:18.572 12142 12142 I CAM_ERR : CAM-EEPROM: cam_eeprom_pkt_parse: 1329 read_eeprom_memory failed 02-21 17:25:18.574 12142 12142 I CAM_ERR : CAM-EEPROM: cam_eeprom_driver_cmd: 1540 Failed in eeprom pkt Parsing 02-21 17:25:18.574 12142 12142 I CAM_ERR : CAM-EEPROM: cam_eeprom_subdev_ioctl: 70 Failed in Driver cmd: -22 02-21 17:25:29.955 12215 12215 I CAM_ERR : CAMERA: cam_ispv4_driver_cmd: 1200 cam_ispv4_turn_on fail 02-21 17:25:33.800 12558 12558 I CAM_ERR : CAM-UTIL: cam_common_register_mini_dump_cb: 238 No free index available 02-21 17:25:34.861 0 0 I [ C2] CAM_ERR: CAM-CCI: cam_cci_irq: 359 Base:ffffffc00df93000, cci: 1, M1_Q1 NACK ERROR: 0x40000000 02-21 17:25:34.861 12558 12558 I CAM_ERR : CAM-CCI: cam_cci_read: 1453 CCI1_I2C_M1_Q1 ERROR with Slave 0xa2 02-21 17:25:34.861 12558 12558 I CAM_ERR : CAM-CCI: cam_cci_read_bytes: 1816 CCI1_I2C_M1 Failed to read rc:-22 02-21 17:25:34.861 12558 12558 I CAM_ERR : CAM-CCI: cam_cci_core_cfg: 2023 rc: -22 02-21 17:25:34.861 12558 12558 I CAM_ERR : CAM-EEPROM: cam_eeprom_read_memory: 114 read failed rc -22 02-21 17:25:34.861 12558 12558 I CAM_ERR : CAM-EEPROM: cam_eeprom_pkt_parse: 1329 read_eeprom_memory failed 02-21 17:25:34.863 12558 12558 I CAM_ERR : CAM-EEPROM: cam_eeprom_driver_cmd: 1540 Failed in eeprom pkt Parsing 02-21 17:25:34.863 12558 12558 I CAM_ERR : CAM-EEPROM: cam_eeprom_subdev_ioctl: 70 Failed in Driver cmd: -22
这段日志显示了一些摄像头相关的错误信息。其中包括CAM-EEPROM的错误,CAM-CCI的错误和CAMERA的错误。这些错误可能与摄像头硬件或驱动程序有关。具体的错误信息包括读取EEPROM内存失败、解析EEPROM数据包失败、CCI通信错误等。这些错误可能导致摄像头无法正常工作。为了解决这些问题,可能需要检查硬件连接、更新驱动程序或联系摄像头供应商获取支持。
写一个linux下光敏电阻的驱动程序
好的,以下是可以用来驱动光敏电阻的简单代码:
```c
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <linux/i2c-dev.h>
#include <sys/ioctl.h>
// 定义 I2C 设备的地址和寄存器地址
#define I2C_ADDRESS 0x48
#define I2C_REGISTER 0x00
// 用于读取 ADC 值,将其转换为电压值
float read_adc(int fd) {
unsigned char buffer[2];
float voltage;
// 读取 I2C 设备
if (read(fd, buffer, 2) != 2) {
printf("Error: Failed to read from the i2c bus.\n");
exit(1);
}
// 将 ADC 值转换为电压
int value = (buffer[0] << 8) | buffer[1];
voltage = (float)value / 32767.0 * 3.3;
return voltage;
}
int main(int argc, char **argv) {
int fd;
char *filename = "/dev/i2c-1";
// 打开 I2C 总线
if ((fd = open(filename, O_RDWR)) < 0) {
printf("Error: Failed to open the i2c bus.\n");
exit(1);
}
// 设置 I2C 设备地址
if (ioctl(fd, I2C_SLAVE, I2C_ADDRESS) < 0) {
printf("Error: Failed to set the i2c slave address.\n");
exit(1);
}
// 写入寄存器地址
unsigned char buffer[1] = { I2C_REGISTER };
if (write(fd, buffer, 1) != 1) {
printf("Error: Failed to write to the i2c bus.\n");
exit(1);
}
// 读取 ADC 值并输出
float voltage = read_adc(fd);
printf("Voltage: %4.2f V\n", voltage);
// 关闭 I2C 总线
close(fd);
}
```
这个驱动程序使用了 Linux 的 I2C 系统来访问光敏电阻,并将 ADC 值转换为电压值输出。您需要将 I2C_ADDRESS 和 I2C_REGISTER 设置为您的设备的地址和寄存器地址,然后就可以编译和运行该代码了。