Android之串口通信（CMake）_android cmake native lib

1.创建SerialPort应用

1.勾选Include C++ support

2.选择Toolchain Default

3.在Android视图下查看项目对应目录中是否存在CMakeList.txt和native-lib.cpp

2.native-lib.cpp更名为SerialPortControl.cpp

1.点击鼠标右键–>>Refactor–>>Rename

2.更名为SerialPortControl.cpp

3.将下面SerialPortControl.cpp文件中的代码粘贴到项目cpp文件夹下的SerialPortControl.cpp中

SerialPortControl.cpp

#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <jni.h>

static speed_t getBaudrate(jint baudRate)
{
    switch(baudRate)
    {
        case 0: return B0;
        case 50: return B50;
        case 75: return B75;
        case 110: return B110;
        case 134: return B134;
        case 150: return B150;
        case 200: return B200;
        case 300: return B300;
        case 600: return B600;
        case 1200: return B1200;
        case 1800: return B1800;
        case 2400: return B2400;
        case 4800: return B4800;
        case 9600: return B9600;
        case 19200: return B19200;
        case 38400: return B38400;
        case 57600: return B57600;
        case 115200: return B115200;
        case 230400: return B230400;
        case 460800: return B460800;
        case 500000: return B500000;
        case 576000: return B576000;
        case 921600: return B921600;
        case 1000000: return B1000000;
        case 1152000: return B1152000;
        case 1500000: return B1500000;
        case 2000000: return B2000000;
        case 2500000: return B2500000;
        case 3000000: return B3000000;
        case 3500000: return B3500000;
        case 4000000: return B4000000;
        default: return -1;
    }
}

JNIEXPORT jobject JNICALL Java_com_SerialPort_open(JNIEnv *env, jclass thiz,jstring path,jint baudRate) {

    int fd;
    speed_t speed;
    jobject mFileDescriptor;

    {
        speed = getBaudrate(baudRate);
        if (speed == -
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