Pinkbyte/yasnd
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implement proper LPT control circuit init on daemon start

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This commit is contained in:
Sergey Popov 2011-12-19 11:22:17 +04:00
parent e7d900d9b7
commit bb6b2328aa
1 changed files with 39 additions and 16 deletions
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55
yasnd.c
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@ -45,6 +45,42 @@ void* allocate_memory(int bytes)
return result;
}
/*
Function, that turn off all LPT port pins.
This is needed to unlock LPT control circuit, when
management computer is just booted
*/
void lpt_init()
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Unlocking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Unlock circuit
outb (0, lpt_port);
}
/*
Function, that turn on first LPT port pin and turn off others.
This is needed to lock LPT control circuit, when
management computer is rebooted
*/
void lpt_lock()
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Locking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Lock circuit
outb (1, lpt_port);
}
void init()
{
// Initialize config parsing library
@ -110,6 +146,9 @@ void init()
// initialize gammu structures
if (sms_send_enable)
gammu_init();
// initialize LPT control circuit
if (lpt_enable)
lpt_init();
}
void check_host(int num,host_decl* host)
@ -136,22 +175,6 @@ void check_host(int num,host_decl* host)
host->helper_pid=pid;
}
/*
Function, that turn on first LPT port pin and turn off others.
This is needed to lock LPT control circuit, when
management computer is rebooted
*/
void lpt_lock()
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: LPT port access error");
exit(EXIT_FAILURE);
}
// Lock circuit
outb (1, lpt_port);
}
/*
Function, that turn on only one LPT port pin, defined by it argument, wait a second,
and turn off all pins. That is enough to reset specified host.