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Serial port management

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Laurent Vivier 2004-06-21 22:39:25 +00:00
parent 39d225cfc7
commit 574e8bdd9d
2 changed files with 237 additions and 0 deletions
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226
second/serial.c Normal file
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/*
*
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <string.h>
#include <unistd.h>
#include "misc.h"
#include "glue.h"
/*
* Technical Note TN1119 "Serial Port Apocrypha"
*
* from http://developer.apple.com/technotes/tn/tn1119.html
*
* Inside Macintosh, Devices, "Using the Serial Driver" :
*
* http://developer.apple.com/documentation/mac/Devices/Devices-315.html
*
* OpenDriver:
*
* http://developer.apple.com/documentation/mac/Devices/Devices-23.html
*
*/
/*
*
* ".AOut" Serial port A (modem) output
* ".AIn" Serial port A (modem) input
* ".BOut" Serial port B (printer) output
* ".BIn" Serial port B (printer) input
*
*/
OSErr OpenDriver(ConstStr255Param name, short *drvrRefNum)
{
OSErr err;
ParamBlockRec param;
memset(&param, 0, sizeof(ParamBlockRec));
param.ioNamePtr = (u_int32_t)name;
param.ioPermssn = fsCurPerm;
err = PBOpenSync(&param);
if (err != noErr)
return err;
*drvrRefNum = param.ioRefNum;
return param.ioResult;
}
OSErr CloseDriver(short refNum)
{
OSErr err;
ParamBlockRec param;
memset(&param, 0, sizeof(ParamBlockRec));
param.ioRefNum = refNum;
err = PBCloseSync(&param);
if (err != noErr)
return err;
return param.ioResult;
}
int setserial(short refNum, unsigned int bitrate, unsigned int datasize,
int parity, int stopbits)
{
CntrlParam param;
short seropts;
int res;
switch(bitrate)
{
case 150:
seropts = baud150;
break;
case 300:
seropts = baud300;
break;
case 600:
seropts = baud600;
break;
case 1200:
seropts = baud1200;
break;
case 1800:
seropts = baud1800;
break;
case 2400:
seropts = baud2400;
break;
case 3600:
seropts = baud3600;
break;
case 4800:
seropts = baud3600;
break;
case 7200:
seropts = baud7200;
break;
case 9600:
seropts = baud9600;
break;
case 14400:
seropts = baud14400;
break;
case 19200:
seropts = baud19200;
break;
case 28800:
seropts = baud28800;
break;
case 38400:
seropts = baud38400;
break;
case 57600:
seropts = baud57600;
break;
default:
seropts = baud9600;
break;
}
switch(datasize)
{
case 5:
seropts |= data5;
break;
case 6:
seropts |= data6;
break;
case 7:
seropts |= data7;
break;
case 8:
seropts |= data8;
break;
default:
seropts |= data8;
break;
}
switch(parity)
{
case 0:
seropts |= noParity;
break;
case 1:
seropts |= oddParity;
break;
case 2:
seropts |= evenParity;
break;
}
switch(stopbits)
{
case 0:
seropts |= stop10;
break;
case 1:
seropts |= stop15;
break;
case 2:
seropts |= stop20;
break;
}
param.csCode = kSERDConfiguration;
param.csParam[0] = seropts;
param.ioCRefNum = refNum;
param.ioVRefNum = 0;
param.ioCompletion = 0;
res = PBControlSync((ParmBlkPtr)&param);
return res;
}
ssize_t write(int fd, const void *buf, size_t count)
{
int res;
ParamBlockRec param;
param.ioCompletion = 0;
param.ioVRefNum = 0;
param.ioRefNum = fd;
param.ioBuffer = (u_int32_t)buf;
param.ioReqCount= count;
param.ioPosMode = fsAtMark;
param.ioPosOffset = 0;
res = PBWriteSync(&param);
if (res != noErr)
return 0;
return param.ioActCount;
}

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/*
*
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
OSErr OpenDriver(ConstStr255Param name, short *drvrRefNum);
OSErr CloseDriver(short refNum);
extern int setserial(short refNum, unsigned int bitrate, unsigned int datasize,
int parity, int stopbits);