diff options
Diffstat (limited to 'comport/comport.c')
| -rw-r--r-- | comport/comport.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/comport/comport.c b/comport/comport.c index e326912..1293024 100644 --- a/comport/comport.c +++ b/comport/comport.c @@ -14,6 +14,7 @@ MP 20060824 added clock_delay call in comport_devicename MP 20060924 added comport_enum to list available ports in Windows MP 20060925 add devices message to enumerate actual devices, info just outputs current port state MP 20061016 write_serial checks for GetOverlappedResult to avoid tx buffer overflow errors +MP 20070719 added "ports" method to output list of available ports on status outlet */ #include "m_pd.h" @@ -269,6 +270,7 @@ static void comport_output_xonxoff(t_comport *x); static void comport_enum(t_comport *x); static void comport_info(t_comport *x); static void comport_devices(t_comport *x); +static void comport_ports(t_comport *x); static void comport_verbose(t_comport *x, t_floatarg f); static void comport_help(t_comport *x); void comport_setup(void); @@ -1356,6 +1358,75 @@ static void comport_enum(t_comport *x) #endif /* _WIN32 */ } +static void comport_ports(t_comport *x) +{ /* the same as comport_enum except outputs list of available ports on status outlet */ + unsigned int i, j = 0; + int ports[COMPORT_MAX]; /* we don't know how many there might be but 99 is probably safe */ +#ifdef _WIN32 + HANDLE fd; + char device_name[10]; + DWORD dw; + + for(i = 1; i < COMPORT_MAX; i++) + { + sprintf(device_name, "\\\\.\\COM%d", i);/* the recommended way to specify COMs above 9 */ + fd = CreateFile( device_name, + GENERIC_READ | GENERIC_WRITE, + 0, + 0, + OPEN_EXISTING, + FILE_FLAG_OVERLAPPED, + 0); + dw = 0L; + if(fd == INVALID_HANDLE_VALUE) + dw = GetLastError(); + else + CloseHandle(fd); + if ((dw == 0)||(dw == ERROR_ACCESS_DENIED)) ports[j++]=i; + } +#else + glob_t glob_buffer; + int fd; + struct termios test; + +/* first look for registered devices in the filesystem */ + switch( glob( x->serial_device_name, 0, NULL, &glob_buffer ) ) + { + case GLOB_NOSPACE: + error("[comport] out of memory for \"%s\"",x->serial_device_name); + break; +# ifdef GLOB_ABORTED + case GLOB_ABORTED: + error("[comport] aborted \"%s\"",x->serial_device_name); + break; +# endif /* GLOB_ABORTED */ +# ifdef GLOB_NOMATCH + case GLOB_NOMATCH: + error("[comport] no serial devices found for \"%s\"",x->serial_device_name); + break; +# endif /* GLOB_NOMATCH */ + } + for(i = 0; (i < glob_buffer.gl_pathc) && (j < COMPORT_MAX); i++) + { +/* now try to open the device */ + if((fd = open(glob_buffer.gl_pathv[i], OPENPARAMS)) != INVALID_HANDLE_VALUE) + { +/* now see if it has attributes */ + if ((tcgetattr(fd, &test)) != -1) + ports[j++] = i;/* this one really exists */ + close (fd); + } + } +#endif /* _WIN32 */ + if (j) + { + t_atom *output_atom = getbytes(j*sizeof(t_atom)); + for (i = 0; i < j; ++i) SETFLOAT(&output_atom[i], ports[i]); + outlet_anything( x->x_status_outlet, gensym("ports"), j, output_atom); + freebytes(output_atom, j*sizeof(t_atom)); + } +} + static void comport_output_print(t_comport *x) { post("[comport]: available serial ports:"); @@ -1475,6 +1546,7 @@ static void comport_help(t_comport *x) " verbose <level> ... for debug set verbosity to level\n" " info ... output info on status outlet\n" " devices ... post list of available devices\n" + " ports ... output list of available devices on status outlet\n" " help ... post this help"); } @@ -1508,6 +1580,7 @@ void comport_setup(void) class_addmethod(comport_class, (t_method)comport_help, gensym("help"), 0); class_addmethod(comport_class, (t_method)comport_info, gensym("info"), 0); class_addmethod(comport_class, (t_method)comport_devices, gensym("devices"), 0); + class_addmethod(comport_class, (t_method)comport_ports, gensym("ports"), 0); #ifndef _WIN32 null_tv.tv_sec = 0; /* no wait */ |