#include <stdio.h>  
#include <string.h>  
#include <jni.h>  
#include <fcntl.h> /*包括文件操作，如open() read() close()write()等*/  
#include <android/log.h>  
#define LOG_TAG "a7105"  #define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)  
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)  #define DEVICE_NAME "/dev/a7105_spi_moni" //device point    int fd;  jstring Java_com_example_a7105demo_a7105Class_stringFromJNI( JNIEnv* env, jobject thiz )  
{  return (*env)->NewStringUTF(env, "This is a7105 demo project!");  
}  jint Java_com_example_a7105demo_a7105Class_Init( JNIEnv* env)  
{  LOGE("a7105Class()\n");  fd = open(DEVICE_NAME, 0);  LOGE("a7105Class()-> fd = %d \n", fd);  if (fd < 0){  LOGE("open device %s error \n", DEVICE_NAME);  return 0;  }  return 1;  
} #if 0  
jint Java_com_example_a7105demo_a7105Class_IOCTL( JNIEnv* env, jobject obj , jint ID, jint state)  
{  LOGE("IOCTL()-> %d dvr gpio State \n",state);  LOGE("IOCTL()-> %d dvr gpio State \n",0);  ioctl(fd,state, NULL);  return 1;  
}  
#endifjint Java_com_example_a7105demo_a7105Class_Read( JNIEnv* env, jobject obj, jintArray bufArr, jint bufLen)  
{ char *bufByte;  int *bufInt;int fd;	int ret;int i;bufByte = malloc(bufLen);  bufInt = malloc(bufLen); LOGE("++++++++Read+++++++++ /n"); (*env)->GetIntArrayRegion(env, bufArr, 0, bufLen, bufInt);fd = open(DEVICE_NAME, O_RDONLY);  if (fd < 0){LOGE("open device %s error \n", DEVICE_NAME);  return fd;}ret = read(fd, bufByte, bufLen);if (ret < 0) {LOGE("open device %s error \n", DEVICE_NAME);  return 0;  }for (i = 0; i < bufLen; i++) {  bufInt[i] = bufByte[i]; LOGE("a7105Class_Read:bufByte = %x, bufInt = %d\n", bufByte[i], bufInt[i]);} /*将读取的值，返回到VM中*/  (*env)->SetIntArrayRegion(env, bufArr, 0, bufLen, bufInt); close(fd);return 1;  
}  jint Java_com_example_a7105demo_a7105Class_Write( JNIEnv* env, jobject obj, jintArray bufArr, jint bufLen)  
{ char *bufByte;  int *bufInt;int fd;	int i;LOGE("++++++++Write+++++++++ /n"); bufByte = malloc(bufLen);  bufInt = malloc(bufLen); (*env)->GetIntArrayRegion(env, bufArr, 0, bufLen, bufInt); /*驱动是byte，所以将int转换成byte*/for (i = 0; i < bufLen; i++) {  bufByte[i] = bufInt[i]; LOGE("a7105Class_Write:bufByte = %x, bufInt = %d\n", bufByte[i], bufInt[i]);}fd = open(DEVICE_NAME, O_WRONLY);  if (fd < 0){LOGE("open device %s error \n", DEVICE_NAME);  return fd;}write(fd, bufByte, bufLen);close(fd); return 1;  
}    
jint Java_com_example_a7105demo_a7105Class_CLOSE( JNIEnv* env, jobject obj )  
{  close(fd);  return 1;  
}