2 * Simulator of microcontrollers (serial.cc)
4 * Copyright (C) 1999,99 Drotos Daniel, Talker Bt.
6 * To contact author send email to drdani@mazsola.iit.uni-miskolc.hu
10 /* This file is part of microcontroller simulator: ucsim.
12 UCSIM is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 UCSIM is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with UCSIM; see the file COPYING. If not, write to the Free
24 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
53 cl_serial::cl_serial(class cl_uc *auc):
54 cl_hw(auc, HW_UART, 0, "uart")
56 serial_in= serial_out= NIL;
59 cl_serial::~cl_serial(void)
63 if (isatty(fileno(serial_out)))
64 tcsetattr(fileno(serial_out), TCSANOW, &saved_attributes_out);
69 if (isatty(fileno(serial_in)))
70 tcsetattr(fileno(serial_in), TCSANOW, &saved_attributes_in);
73 delete serial_in_file_option;
74 delete serial_out_file_option;
83 set_name("mcs51_uart");
84 sfr= uc->address_space(MEM_SFR_ID);
87 //sbuf= sfr->register_hw(SBUF, this, 0);
88 //pcon= sfr->register_hw(PCON, this, 0);
89 //scon= sfr->register_hw(SCON, this, 0);
90 register_cell(sfr, SBUF, &sbuf, wtd_restore_write);
91 register_cell(sfr, PCON, &pcon, wtd_restore_write);
92 register_cell(sfr, SCON, &scon, wtd_restore_write);
95 serial_in_file_option= new cl_optref(this);
96 serial_in_file_option->init();
97 serial_in_file_option->use("serial_in_file");
98 serial_out_file_option= new cl_optref(this);
99 serial_out_file_option->init();
100 serial_out_file_option->use("serial_out_file");
103 /*if ((fni= serial_in_file_option->get_value((char*)0)))
104 serial_in= fopen(fni, "r");
105 if ((fno= serial_out_file_option->get_value((char*)0)))
106 serial_out= fopen(fno, "w");*/
108 //serial_in = (FILE*)application->args->get_parg(0, "Ser_in");
109 //serial_out= (FILE*)application->args->get_parg(0, "Ser_out");
110 serial_in = (FILE*)serial_in_file_option->get_value((void*)0);
111 serial_out= (FILE*)serial_out_file_option->get_value((void*)0);
114 // making `serial' unbuffered
115 if (setvbuf(serial_in, NULL, _IONBF, 0))
116 perror("Unbuffer serial input channel");
117 // setting O_NONBLOCK
118 if ((i= fcntl(fileno(serial_in), F_GETFL, 0)) < 0)
119 perror("Get flags of serial input");
121 if (fcntl(fileno(serial_in), F_SETFL, i) < 0)
122 perror("Set flags of serial input");
123 // switching terminal to noncanonical mode
124 if (isatty(fileno(serial_in)))
126 tcgetattr(fileno(serial_in), &saved_attributes_in);
127 tcgetattr(fileno(serial_in), &tattr);
128 tattr.c_lflag&= ~(ICANON|ECHO);
129 tattr.c_cc[VMIN] = 1;
130 tattr.c_cc[VTIME]= 0;
131 tcsetattr(fileno(serial_in), TCSAFLUSH, &tattr);
134 fprintf(stderr, "Warning: serial input interface connected to a "
135 "non-terminal file.\n");
139 // making `serial' unbuffered
140 if (setvbuf(serial_out, NULL, _IONBF, 0))
141 perror("Unbuffer serial output channel");
142 // setting O_NONBLOCK
143 if ((i= fcntl(fileno(serial_out), F_GETFL, 0)) < 0)
144 perror("Get flags of serial output");
146 if (fcntl(fileno(serial_out), F_SETFL, i) < 0)
147 perror("Set flags of serial output");
148 // switching terminal to noncanonical mode
149 if (isatty(fileno(serial_out)))
151 tcgetattr(fileno(serial_out), &saved_attributes_out);
152 tcgetattr(fileno(serial_out), &tattr);
153 tattr.c_lflag&= ~(ICANON|ECHO);
154 tattr.c_cc[VMIN] = 1;
155 tattr.c_cc[VTIME]= 0;
156 tcsetattr(fileno(serial_out), TCSAFLUSH, &tattr);
159 fprintf(stderr, "Warning: serial output interface connected to a "
160 "non-terminal file.\n");
163 class cl_hw *t2= uc->get_hw(HW_TIMER, 2, 0);
164 if ((there_is_t2= t2 != 0))
166 t_mem d= sfr->get(T2CON);
167 t2_baud= d & (bmRCLK | bmTCLK);
176 cl_serial::new_hw_added(class cl_hw *new_hw)
178 if (new_hw->cathegory == HW_TIMER &&
181 there_is_t2= DD_TRUE;
182 t_mem d= sfr->get(T2CON);
183 t2_baud= d & (bmRCLK | bmTCLK);
188 cl_serial::added_to_uc(void)
190 uc->it_sources->add(new cl_it_src(bmES , SCON, bmTI , 0x0023, false,
191 "serial transmit", 6));
192 uc->it_sources->add(new cl_it_src(bmES , SCON, bmRI , 0x0023, false,
193 "serial receive", 6));
197 cl_serial::read(class cl_memory_cell *cell)
206 cl_serial::write(class cl_memory_cell *cell, t_mem *val)
219 _bmREN= *val & bmREN;
229 _divby= _bmSMOD?16:32;
233 _divby= _bmSMOD?16:32;
237 _divby= _bmSMOD?16:32;
241 else if (cell == pcon)
243 _bmSMOD= *val & bmSMOD;
247 _divby= _bmSMOD?16:32;
250 _divby= _bmSMOD?16:32;
253 _divby= _bmSMOD?16:32;
257 _divby= _bmSMOD?16:32;
262 cl_serial::mem_cell_changed(class cl_m *mem, t_addr addr)
275 cl_serial::serial_bit_cnt(void)
278 int *tr_src= 0, *rec_src= 0;
285 rec_src= &s_rec_tick;
289 //divby = (/*pcon->get()&bmSMOD*/_bmSMOD)?16:32;
294 //divby = (/*pcon->get()&bmSMOD*/_bmSMOD)?16:32;
296 rec_src= &s_rec_tick;
303 while (*tr_src >= _divby)
307 //printf("serial bit sent %d\n",uc->ticks->ticks);
312 while (*rec_src >= _divby)
322 cl_serial::tick(int cycles)
326 serial_bit_cnt(/*_mode*/);
331 scon->set_bit1(bmTI);
334 putc(s_out, serial_out);
338 //printf("serial out %d bit rems %d\n",s_tr_bit,uc->ticks->ticks);
340 if ((/*scn & bmREN*/_bmREN) &&
344 fd_set set; static struct timeval timeout= {0,0};
346 FD_SET(fileno(serial_in), &set);
347 int i= select(fileno(serial_in)+1, &set, NULL, NULL, &timeout);
349 FD_ISSET(fileno(serial_in), &set))
351 s_receiving= DD_TRUE;
353 s_rec_tick= /*uc51->*/s_rec_t1= 0;
357 (s_rec_bit >= _bits))
359 if (::read(fileno(serial_in), &c, 1) == 1)
365 s_receiving= DD_FALSE;
370 s_tr_tick+= (l= cycles * uc->clock_per_cycle());
376 cl_serial::received(int c)
378 scon->set_bit1(bmRI);
382 cl_serial::reset(void)
390 s_sending = DD_FALSE;
391 s_receiving= DD_FALSE;
397 cl_serial::happen(class cl_hw *where, enum hw_event he, void *params)
399 if (where->cathegory == HW_TIMER)
403 //printf("serial: timer overflowed %ld\n", uc->ticks->ticks);
407 if (where->id == 2 /*&& there_is_t2*/)
411 case EV_T2_MODE_CHANGED:
414 s_rec_t1= s_tr_t1= 0;
415 t_mem *d= (t_mem *)params;
416 t2_baud= *d & (bmRCLK | bmTCLK);
420 //printf("T2
\abaud ov r%d t%d\n",s_rec_t1,s_tr_t1);
431 cl_serial::print_info(class cl_console *con)
433 char *modes[]= { "Shift, fixed clock",
434 "8 bit UART timer clocked",
435 "9 bit UART fixed clock",
436 "9 bit UART timer clocked" };
439 con->dd_printf("%s[%d]", id_string, id);
440 int mode= (sc&(bmSM0|bmSM1))>>6;
441 con->dd_printf(" %s", modes[mode]);
442 if (mode == 1 || mode == 2)
443 con->dd_printf(" (timer%d)", (t2_baud)?2:1);
444 con->dd_printf(" MultiProc=%s",
445 (mode&2)?((sc&bmSM2)?"ON":"OFF"):"none");
446 con->dd_printf(" irq=%s", (sfr->get(IE)&bmES)?"en":"dis");
447 con->dd_printf(" prio=%d", uc->it_priority(bmPS));
448 con->dd_printf("\n");
450 con->dd_printf("Receiver");
451 con->dd_printf(" %s", (sc&bmREN)?"ON":"OFF");
452 con->dd_printf(" RB8=%c", (sc&bmRB8)?'1':'0');
453 con->dd_printf(" irq=%c", (sc&bmRI)?'1':'0');
454 con->dd_printf("\n");
456 con->dd_printf("Transmitter");
457 con->dd_printf(" TB8=%c", (sc&bmTB8)?'1':'0');
458 con->dd_printf(" irq=%c", (sc&bmTI)?'1':'0');
459 con->dd_printf("\n");
460 /*con->dd_printf("s_rec_t1=%d s_rec_bit=%d s_rec_tick=%d\n",
461 s_rec_t1, s_rec_bit, s_rec_tick);
462 con->dd_printf("s_tr_t1=%d s_tr_bit=%d s_tr_tick=%d\n",
463 s_tr_t1, s_tr_bit, s_tr_tick);
464 con->dd_printf("divby=%d bits=%d\n", _divby, _bits);*/
468 /* End of s51.src/serial.cc */