diff options
Diffstat (limited to 'Modelica-Arduino-MDD_Arduino_Revised/Resources/src/serialComm.c')
| -rwxr-xr-x | Modelica-Arduino-MDD_Arduino_Revised/Resources/src/serialComm.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/Modelica-Arduino-MDD_Arduino_Revised/Resources/src/serialComm.c b/Modelica-Arduino-MDD_Arduino_Revised/Resources/src/serialComm.c new file mode 100755 index 0000000..6fd915a --- /dev/null +++ b/Modelica-Arduino-MDD_Arduino_Revised/Resources/src/serialComm.c @@ -0,0 +1,156 @@ +#include <errno.h> +#include <termios.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> /* memset */ +#include <stdio.h> +#include <stropts.h> +#include "../Include/serial.h" +#define MAXPORTS 5 +static int fd; + +int set_interface_attribs (int fd, int speed, int parity) +{ + struct termios tty; + memset (&tty, 0, sizeof(tty)); + if (tcgetattr (fd, &tty) != 0) + { + return -1; + } + int posix_baudrate=0; + + switch(speed) { + case 115200: posix_baudrate = B115200; break; + //default: return -1; + } + cfsetospeed (&tty, posix_baudrate); + cfsetispeed (&tty, posix_baudrate); + + tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8; // 8-bit chars + // disable IGNBRK for mismatched speed tests; otherwise receive break + // as \000 chars + tty.c_iflag &= ~IGNBRK; // disable break processing + tty.c_lflag = 0; // no signaling chars, no echo, + // no canonical processing + tty.c_oflag = 0; // no remapping, no delays + tty.c_cc[VMIN] = 0; // read doesn't block + tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout + + tty.c_iflag &= ~(IXON | IXOFF | IXANY); // shut off xon/xoff ctrl + + tty.c_cflag |= (CLOCAL | CREAD);// ignore modem controls, + // enable reading + tty.c_cflag &= ~(PARENB | PARODD); // shut off parity + tty.c_cflag |= parity; + tty.c_cflag &= ~CSTOPB; + tty.c_cflag &= ~CRTSCTS; + + if (tcsetattr (fd, TCSANOW, &tty) != 0) + { + return -1; + } + return 0; +} + + +void set_blocking (int b, int should_block) +{ + struct termios tty; + memset (&tty, 0, sizeof tty); + if (tcgetattr (b, &tty) != 0) + { + return; + } + + tty.c_cc[VMIN] = should_block ? 1 : 0; + tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout + + //if (tcsetattr (fd, TCSANOW, &tty) != 0) + // error_message ("error %d setting term attributes", errno); +} + +int open_serial(int handle,int port, int baudrate){ + char* portname; + //printf("%d\n",port); + int OK; + switch(port){ + case 0: portname = "//dev/ttyACM0";break; + case 1: portname = "//dev/ttyACM1";break; + case 2: portname = "//dev/ttyACM2";break; + case 3: portname = "//dev/ttyACM3";break; + case 4: portname = "//dev/ttyACM4";break; + case 5: portname = "//dev/ttyACM5";break; + case 6: portname = "//dev/ttyACM6";break; + case 7: portname = "//dev/ttyACM7";break; + //default : return 2; + } + OK = 0; + //printf("%s\n",portname); + fd = open (portname, O_RDWR | O_NOCTTY | O_SYNC); + //fd = open (portname, O_RDWR | O_NOCTTY); //srikant + //printf("%d\n",fd); + if (fd < 0) + { + OK=2; + return OK; + } + set_interface_attribs (fd, baudrate, 0); + set_blocking (fd, 0); // set no blocking + //printf("Program running with status : %d\n",OK); + return OK; +} + +int close_serial(int handle){ + //usleep(1000); + close(fd); + //printf("Program closing....\n"); + return 0; +} + +int write_serial(int handle, char str[],int size){ + if(write(fd, str, size)!=-1) + { + //printf("serial write started.\n"); + //printf("%s\n",str ); + //printf("%d\n",(int)str[0] ); + } + usleep(size*100); + return 0; +} + + +int status_serial(int handle,int nb[]){ + nb[0] = 2; + nb[1] = 2; + int OK=0; + //printf("Getting status.....\n"); + return OK; +} + +int read_serial(int handle,char buf[],int size){ + + char readbuf[size+1]; + //int fl=tcflush(fd,TCOFLUSH); + //int fl=ioctl(fd,I_FLUSH,FLUSHW); + if(read(fd, readbuf, size)!=-1) + { + readbuf[size]='\0'; + int i; + for (i = 0; i < size; ++i) + { + buf[i]=(readbuf[i]); + //printf("%u\n",buf[i] ); + } + buf[size]='\0'; + //printf("Reading has commenced..\n"); + //printf("%d\n",(int)strlen(readbuf)); + //printf("%s\n",readbuf); + return 0; + } + else + return 2 ; +} +/*void read_serial(int *handle,char buf[],int *size){ + read(fd, buf, *size); + printf("Reading has commenced..\n"); +}*/ |