int openArduino(char* portname, char** error)
{
RUNLOG("#### arduino.js # start openArduino...\n");
DCB dcb = {0};
COMMTIMEOUTS timeout;
if(handle != NULL){
closeArduino();
}
handle = CreateFile(portname
, GENERIC_READ | GENERIC_WRITE
, 0
, NULL
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, NULL
);
if(handle == INVALID_HANDLE_VALUE){
return -1;
}
GetCommState(handle, &dcb);
dcb.BaudRate = CBR_9600;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
timeout.ReadIntervalTimeout = 10;
timeout.ReadTotalTimeoutMultiplier = 1;
timeout.ReadTotalTimeoutConstant = 10;
timeout.WriteTotalTimeoutMultiplier = 1;
timeout.WriteTotalTimeoutConstant = 10;
if(SetCommState(handle, &dcb) == FALSE){
return -1;
}
if(SetCommTimeouts(handle, &timeout) == FALSE){
return -1;
}
Sleep(2000);
//wait until Arduino finish the setup
char buffer[BUFFER_SIZE];
memset(buffer , '\0' , sizeof(buffer));
response(buffer);
RUNLOG("#### arduino.js # return openArduino...\n");
return 0;
}
int openArduino(char* portname, char** error)
{
if (device_file_descriptor != -1) {
closeArduino();
}
fprintf(stderr,"enter openArduino\n"); //KK
// NSLog(/*@*/"openArduino:[%s]",portname);
const char *bsdPath = portname;
struct termios gOriginalTTYAttrs;
speed_t baudRate = 9600;
unsigned long mics = 3;
int serialFileDescriptor = open(bsdPath, O_RDWR | O_NOCTTY | O_NDELAY );
device_file_descriptor = serialFileDescriptor;
// TIOCEXCL causes blocking of non-root processes on this serial-port
if ( ioctl(serialFileDescriptor, TIOCEXCL) == -1) {
*error = "Error: couldn't obtain lock on serial port";
NSLog(/*@*/"%s", *error);
return -1;
}
if ( fcntl(serialFileDescriptor, F_SETFL, 0) == -1) {
// clear the O_NONBLOCK flag; all calls from here on out are blocking for non-root processes
*error = "Error: couldn't obtain lock on serial port";
NSLog(/*@*/"%s", *error);
return -1;
}
// Get the current options and save them so we can restore the default settings later.
if ( tcgetattr(serialFileDescriptor, &gOriginalTTYAttrs) == -1) {
*error = "Error: couldn't get serial attributes";
NSLog(/*@*/"%s", *error);
return -1;
}
// copy the old termios settings into the current
// you want to do this so that you get all the control characters assigned
struct termios options = gOriginalTTYAttrs;
/*
cfmakeraw(&options) is equivilent to:
options->c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
options->c_oflag &= ~OPOST;
options->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
options->c_cflag &= ~(CSIZE | PARENB);
options->c_cflag |= CS8;
*/
cfmakeraw(&options);
// set tty attributes (raw-mode in this case)
if ( tcsetattr(serialFileDescriptor, TCSANOW, &options) == -1) {
*error = "Error: couldn't get serial attributes";
NSLog(/*@*/"%s", *error);
return -1;
}
// Set baud rate (any arbitrary baud rate can be set this way)
/***********************************************/
//if ( ioctl(serialFileDescriptor, IOSSIOSPEED, &baudRate) == -1) {
// *error = "Error: Baud Rate out of bounds";
// NSLog(/*@*/"%s", *error);
// return -1;
//}
// by KK
if( cfsetspeed(&options, baudRate) == -1 ) {
NSLog("Error: Baud Rate out of bounds","");
return -1;
}
/***********************************************/
// Set the receive latency (a.k.a. don't wait to buffer data)
//if ( ioctl(serialFileDescriptor, IOSSDATALAT, &mics) == -1) {
// *error = "Error: coudln't set serial latency";
// NSLog(/*@*/"%s", *error);
// return -1;
//}
//wait until Arduino finish the setup
char buffer[BUFFER_SIZE];
memset(buffer , '\0' , sizeof(buffer));
response(buffer);
return 0;
}
