static void read_option(t_env *e, int ac, char **av)
{
if (ac != 2)
error_arg();
if (open_file(e, av[1]) == 0)
error_map();
}
/* init_method2(): file method but check existing devices(s) */
static int init_method2(int dev_no)
{
FHANDLE dev_handle; /* device handle */
int gen_status; /* generic error codes returned to the application */
int other_dev;
gen_status = NORMAL; /* assume normal status */
other_dev = dev_no;
if (pos_setup[dev_no].init_flag)
gen_status = DEV_EXIST;
if (gen_status == DEV_EXIST) /* already initialized */
{
/* update the POS Device table */
update_table(1, dev_no, pos_setup[other_dev].file_num, -1, -1, -1, -1);
gen_status = NORMAL;
}
else /* not yet initialized */
{
dev_handle = _fsOpen(pos_setup[dev_no].dev_type, OPEN_FLAGS );
gen_status = error_map(_fsError()); /* get the generic error status */
if (gen_status == NORMAL)
update_table(1, dev_no, dev_handle, -1, -1, -1, -1); /* update the POS Device table */
}
return gen_status;
}
/* int close_method1(): file method */
static int close_method1(int dev_no)
{
int gen_status; /* generic error codes returned to the application */
_fsClose(pos_setup[dev_no].file_num);
gen_status = error_map(_fsError()); /* get the generic error status */
if (gen_status == NORMAL)
update_table(0, dev_no, -1, -1, -1, -1, -1); /* update the POS Device table */
return gen_status;
}
/* init_method1(): file method */
static int init_method1(int dev_no)
{
FHANDLE dev_handle; /* device handle */
int gen_status; /* generic error codes returned to the application */
dev_handle = _fsOpen(pos_setup[dev_no].dev_type, OPEN_FLAGS );
gen_status = error_map(_fsError()); /* get the generic error status */
if (gen_status == NORMAL)
update_table(1, dev_no, dev_handle, -1, -1, -1, -1); /* update the POS Device table */
return gen_status;
}
/* close_method2(): file method but check existing devices(s) */
static int close_method2(int dev_no)
{
int gen_status; /* generic error codes returned to the application */
int other_dev;
other_dev = 0;
gen_status = NORMAL; /* assume normal status */
switch (dev_no)
{
case POS_KEYBOARD:
case POS_CARD_READ:
case POS_CKEYLOCK: /* check existing devices */
if (chk_init_flag(POS_CARD_READ)) /* card reader */
++other_dev;
if (chk_init_flag(POS_CKEYLOCK)) /* keylock */
++other_dev;
if (chk_init_flag(POS_KEYBOARD)) /* POS keyboard */
++other_dev;
break;
}
if (other_dev > 1) /* link to other devices */
update_table(0, dev_no, -1, -1, -1, -1, -1); /* update the POS Device table */
else
{
_fsClose(pos_setup[dev_no].file_num);
gen_status = error_map(_fsError()); /* get the generic error status */
if (gen_status == NORMAL)
update_table(0, dev_no, -1, -1, -1, -1, -1); /* update the POS Device table */
}
return gen_status;
}
/* pos_device_chk: performs additional hardware checking or initialization */
static int pos_device_chk(int dev_no)
{
int gen_status; /* generic error codes returned to the application */
unsigned char esc_cmd[12]; /* holds the escape sequence command */
int port_status;
gen_status = NORMAL; /* assume normal */
switch (dev_no)
{
#if 1
case POS_CASH_DISP: /* cashier or operator display */
/* clear the screen */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = 'C';
/* cursor off and no blink */
esc_cmd[2] = ESC_CODE;
esc_cmd[3] = 'A';
esc_cmd[4] = 0x01;
/* set cursor to the leftmost column */
esc_cmd[5] = ESC_CODE;
esc_cmd[6] = 'D';
esc_cmd[7] = 0x00;
/* select overwrite mode
esc_cmd[8] = ESC_CODE;
esc_cmd[9] = 'S';
esc_cmd[10] = 0x02; */
_fsWrite(pos_setup[dev_no].file_num, esc_cmd, 8);
gen_status = error_map(_fsError());
if (gen_status == NORMAL)
{
/* select overwrite mode */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = 'S';
esc_cmd[2] = 0x02;
_fsWrite(pos_setup[dev_no].file_num, esc_cmd, 3);
gen_status = error_map(_fsError());
}
break;
case POS_CUST_DISP1: /* 1 X 9 integrated customer display */
/* initialize display */
esc_cmd[0] = 0x00;
/* clear the screen and set the cursor to the leftmost column */
esc_cmd[1] = '\n';
_fsWrite(pos_setup[dev_no].file_num, esc_cmd, 2);
gen_status = error_map(_fsError());
break;
#endif
case POS_CUST_DISP2: /* 2 X 20 customer display (additional) */
port_status = pfl_com_init(pos_setup[dev_no].port, pos_setup[dev_no].setup,
(unsigned char) pos_setup[dev_no].protocol);
if ((port_status & 0x0030) != 0x0030) /* data set ready & clear to send */
gen_status = DEV_NOT_READY;
if (gen_status == NORMAL)
{
/* initialize display */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = '@';
/* set character set to U.S.A. */
esc_cmd[2] = ESC_CODE;
esc_cmd[3] = 'f';
esc_cmd[4] = 'A';
/* select font: comply with ASCII code */
esc_cmd[5] = ESC_CODE;
esc_cmd[6] = 'c';
esc_cmd[7] = 'A';
if (pfl_com_nsend(esc_cmd, 8))
gen_status = DEV_NOT_READY;
delay(50); /* put some delay */
/* specify overwrite mode */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = 0x11;
/* move the cursor to the leftmost position on the upper line
esc_cmd[2] = ESC_CODE;
esc_cmd[3] = '[';
esc_cmd[4] = 'H'; */
if (pfl_com_nsend(esc_cmd, 2))
gen_status = DEV_NOT_READY;
delay(500); /* put some delay */
/* clear display screen */
esc_cmd[0] = 0x0c;
if (pfl_com_send(esc_cmd[0]))
gen_status = DEV_NOT_READY;
delay(500);
}
break;
case OPT_SLIP_PRNTR: /* optional slip printer */
port_status = pfl_com_init(pos_setup[dev_no].port, pos_setup[dev_no].setup,
(unsigned char) pos_setup[dev_no].protocol);
/* check printer status: see corresponding printer manual for verifying the printer status */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = 0x76;
pfl_com_nsend(esc_cmd, 2);
if (pfl_com_drecv() == -1) /* cannot retrieve the status */
gen_status = DEV_NOT_READY;
break;
case POS_SCAN: /* scanner or optical reader */
port_status = pfl_com_init(pos_setup[dev_no].port, pos_setup[dev_no].setup,
(unsigned char) pos_setup[dev_no].protocol);
/*if (!(port_status & 0x0020)) */ /* data set ready ? */
/* gen_status = DEV_NOT_READY; */ /* scanner not ready */
gen_status = NORMAL;
break;
case POS_CASH_DRAW: /* cash drawer */
port_status = pfl_com_init(pos_setup[dev_no].port, pos_setup[dev_no].setup,
(unsigned char) pos_setup[dev_no].protocol);
if (!(port_status & 0x0010)) /* not clear to send */
gen_status = DEV_NOT_READY;
break;
case POS_PRINTER: /* POS RJS printer */
/* set paper end signal to journal printer */
esc_cmd[0] = ESC_CODE;
esc_cmd[1] = 'c';
esc_cmd[2] = '3';
esc_cmd[3] = 1;
pfl_lpt_nsend(pos_setup[dev_no].lpt_port, esc_cmd, 4);
delay(50); /* put some delay */
port_status = pfl_lpt_sts(pos_setup[dev_no].lpt_port);
/* timeout, I/O error, out of paper, busy, and not selected status */
if ((port_status & 0x29) || !(port_status & 0x80) || !(port_status & 0x10))
gen_status = DEV_NOT_READY;
break;
case POS_KEYBOARD:
pfl_key_clear(); /* clear POS keyboard buffer */
break;
case POS_CKEYLOCK:
if (!check_pfl_klck()) /* PFL_KLCK.COM not installed */
gen_status = NO_DRIVER;
break;
}
if (gen_status != NORMAL) /* update the POS Device table */
{
if (pos_setup[dev_no].open_method == 1) /* device opened as a file */
_fsClose(pos_setup[dev_no].file_num);
else if (pos_setup[dev_no].open_method == 2) /* file method but linked to
other devices */
close_link_dev(dev_no);
update_table(0, dev_no, -1, -1, -1, -1, -1); /* update the POS Device table */
}
return gen_status;
}
