| Line 74... |
Line 74... |
{
|
{
|
int reg;
|
int reg;
|
int ovd = (sockit_owm.ovd >> portnum) & 0x1;
|
int ovd = (sockit_owm.ovd >> portnum) & 0x1;
|
|
|
// lock transfer
|
// lock transfer
|
ALT_SEM_PEND (sockit_owm.trn, 0);
|
ALT_SEM_PEND (sockit_owm.cyc, 0);
|
|
|
// write RST
|
// reset pulse
|
IOWR_SOCKIT_OWM (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_POWER_OFST)
|
IOWR_SOCKIT_OWM_CTL (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_CTL_POWER_OFST )
|
| (portnum << SOCKIT_OWM_SEL_OFST)
|
| (portnum << SOCKIT_OWM_CTL_SEL_OFST )
|
| (sockit_owm.ena << SOCKIT_OWM_ETX_OFST)
|
| (sockit_owm.ien ? SOCKIT_OWM_CTL_IEN_MSK : 0x00)
|
| (ovd << SOCKIT_OWM_OVD_OFST)
|
| ( SOCKIT_OWM_CTL_CYC_MSK )
|
| SOCKIT_OWM_RST_MSK);
|
| (ovd ? SOCKIT_OWM_CTL_OVD_MSK : 0x00)
|
|
| ( SOCKIT_OWM_CTL_RST_MSK ));
|
|
|
// wait for irq to set the transfer end flag
|
// wait for irq to set the transfer end flag
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
// wait for STX (end of transfer cycle) and read the presence status
|
// wait for STX (end of transfer cycle) and read the presence status
|
while ((reg = IORD_SOCKIT_OWM (sockit_owm.base)) & SOCKIT_OWM_TRN_MSK);
|
while ((reg = IORD_SOCKIT_OWM_CTL (sockit_owm.base)) & SOCKIT_OWM_CTL_CYC_MSK);
|
|
|
// release transfer lock
|
// release transfer lock
|
ALT_SEM_POST (sockit_owm.trn);
|
ALT_SEM_POST (sockit_owm.cyc);
|
|
|
// return DRX (presence detect)
|
// return negated DAT (presence detect)
|
return (~reg >> SOCKIT_OWM_DAT_OFST) & 0x1;
|
return (~reg & SOCKIT_OWM_CTL_DAT_MSK); // NOTE the shortcut
|
}
|
}
|
|
|
//--------------------------------------------------------------------------
|
//--------------------------------------------------------------------------
|
// Send 1 bit of communication to the 1-Wire Net and return the
|
// Send 1 bit of communication to the 1-Wire Net and return the
|
// result 1 bit read from the 1-Wire Net. The parameter 'sendbit'
|
// result 1 bit read from the 1-Wire Net. The parameter 'sendbit'
|
| Line 114... |
Line 115... |
{
|
{
|
int reg;
|
int reg;
|
int ovd = (sockit_owm.ovd >> portnum) & 0x1;
|
int ovd = (sockit_owm.ovd >> portnum) & 0x1;
|
|
|
// lock transfer
|
// lock transfer
|
ALT_SEM_PEND (sockit_owm.trn, 0);
|
ALT_SEM_PEND (sockit_owm.cyc, 0);
|
|
|
// write RST
|
// read/write data
|
IOWR_SOCKIT_OWM (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_POWER_OFST)
|
IOWR_SOCKIT_OWM_CTL (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_CTL_POWER_OFST )
|
| (portnum << SOCKIT_OWM_SEL_OFST)
|
| (portnum << SOCKIT_OWM_CTL_SEL_OFST )
|
| (sockit_owm.ena << SOCKIT_OWM_ETX_OFST)
|
| (sockit_owm.ien ? SOCKIT_OWM_CTL_IEN_MSK : 0x00)
|
| (ovd << SOCKIT_OWM_OVD_OFST)
|
| ( SOCKIT_OWM_CTL_CYC_MSK )
|
| ((sendbit & 0x1) << SOCKIT_OWM_DAT_OFST));
|
| (ovd ? SOCKIT_OWM_CTL_OVD_MSK : 0x00)
|
|
| (sendbit & SOCKIT_OWM_CTL_DAT_MSK )); // NOTE the shortcut
|
|
|
// wait for irq to set the transfer end flag
|
// wait for irq to set the transfer end flag
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
// wait for STX (end of transfer cycle) and read the read data bit
|
// wait for STX (end of transfer cycle) and read the read data bit
|
while ((reg = IORD_SOCKIT_OWM (sockit_owm.base)) & SOCKIT_OWM_TRN_MSK);
|
while ((reg = IORD_SOCKIT_OWM_CTL (sockit_owm.base)) & SOCKIT_OWM_CTL_CYC_MSK);
|
|
|
// release transfer lock
|
// release transfer lock
|
ALT_SEM_POST (sockit_owm.trn);
|
ALT_SEM_POST (sockit_owm.cyc);
|
|
|
// return DRX (read bit)
|
// return DAT (read bit)
|
return (reg >> SOCKIT_OWM_DAT_OFST) & 0x1;
|
return (reg & SOCKIT_OWM_CTL_DAT_MSK); // NOTE the shortcut
|
}
|
}
|
|
|
//--------------------------------------------------------------------------
|
//--------------------------------------------------------------------------
|
// Send 8 bits of communication to the 1-Wire Net and return the
|
// Send 8 bits of communication to the 1-Wire Net and return the
|
// result 8 bits read from the 1-Wire Net. The parameter 'sendbyte'
|
// result 8 bits read from the 1-Wire Net. The parameter 'sendbyte'
|
| Line 203... |
Line 205... |
//
|
//
|
// Returns: current 1-Wire Net speed
|
// Returns: current 1-Wire Net speed
|
//
|
//
|
SMALLINT owSpeed(int portnum, SMALLINT new_speed)
|
SMALLINT owSpeed(int portnum, SMALLINT new_speed)
|
{
|
{
|
if (new_speed == MODE_OVERDRIVE) sockit_owm.ovd |= (1 << portnum);
|
int select;
|
if (new_speed == MODE_NORMAL ) sockit_owm.ovd &= ~(1 << portnum);
|
select = 0x1 << portnum;
|
|
// if overdrive is implemented use it
|
|
if (sockit_owm.ovd_e) {
|
|
if (new_speed == MODE_OVERDRIVE) sockit_owm.ovd |= select;
|
|
if (new_speed == MODE_NORMAL ) sockit_owm.ovd &= ~select;
|
|
}
|
// return the current port state
|
// return the current port state
|
return ((sockit_owm.ovd >> portnum) & 0x1) ? MODE_OVERDRIVE : MODE_NORMAL;
|
return (sockit_owm.ovd & select) ? MODE_OVERDRIVE : MODE_NORMAL;
|
}
|
}
|
|
|
//--------------------------------------------------------------------------
|
//--------------------------------------------------------------------------
|
// Set the 1-Wire Net line level. The values for NewLevel are
|
// Set the 1-Wire Net line level. The values for NewLevel are
|
// as follows:
|
// as follows:
|
| Line 228... |
Line 235... |
SMALLINT owLevel(int portnum, SMALLINT new_level)
|
SMALLINT owLevel(int portnum, SMALLINT new_level)
|
{
|
{
|
if (new_level == MODE_STRONG5) {
|
if (new_level == MODE_STRONG5) {
|
// set the power bit
|
// set the power bit
|
sockit_owm.pwr |= (1 << portnum);
|
sockit_owm.pwr |= (1 << portnum);
|
IOWR_SOCKIT_OWM (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_POWER_OFST)
|
IOWR_SOCKIT_OWM_CTL (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_CTL_POWER_OFST) | SOCKIT_OWM_CTL_PWR_MSK);
|
| SOCKIT_OWM_PWR_MSK
|
|
| SOCKIT_OWM_IDL_MSK);
|
|
}
|
}
|
if (new_level == MODE_NORMAL) {
|
if (new_level == MODE_NORMAL) {
|
// clear the power bit
|
// clear the power bit
|
sockit_owm.pwr &= ~(1 << portnum);
|
sockit_owm.pwr &= ~(1 << portnum);
|
IOWR_SOCKIT_OWM (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_POWER_OFST)
|
IOWR_SOCKIT_OWM_CTL (sockit_owm.base, (sockit_owm.pwr << SOCKIT_OWM_CTL_POWER_OFST));
|
| SOCKIT_OWM_IDL_MSK);
|
|
}
|
}
|
// return the current port state
|
// return the current port state
|
return ((sockit_owm.pwr >> portnum) & 0x1) ? MODE_STRONG5 : MODE_NORMAL;
|
return ((sockit_owm.pwr >> portnum) & 0x1) ? MODE_STRONG5 : MODE_NORMAL;
|
}
|
}
|
|
|
| Line 266... |
Line 270... |
void msDelay(int len)
|
void msDelay(int len)
|
{
|
{
|
#if SOCKIT_OWM_HW_DLY
|
#if SOCKIT_OWM_HW_DLY
|
int i;
|
int i;
|
|
|
|
// compute the number delay cycles depending on delay time
|
|
len = (len * sockit_owm.f_dly) >> 16;
|
|
|
// lock transfer
|
// lock transfer
|
ALT_SEM_PEND (sockit_owm.trn, 0);
|
ALT_SEM_PEND (sockit_owm.cyc, 0);
|
|
|
for (i=0; i<len; i++) {
|
for (i=0; i<len; i++) {
|
// create a 960us pause
|
// create a 960us pause
|
IOWR_SOCKIT_OWM (sockit_owm.base, ( sockit_owm.pwr << SOCKIT_OWM_POWER_OFST)
|
IOWR_SOCKIT_OWM_CTL (sockit_owm.base, ( sockit_owm.pwr << SOCKIT_OWM_CTL_POWER_OFST )
|
| ( sockit_owm.ena << SOCKIT_OWM_ETX_OFST)
|
| ( sockit_owm.ien ? SOCKIT_OWM_CTL_IEN_MSK : 0x00)
|
| ((sockit_owm.pwr & 0x1) << SOCKIT_OWM_PWR_OFST)
|
| ((sockit_owm.pwr & 0x1) ? SOCKIT_OWM_CTL_PWR_MSK : 0x00)
|
| SOCKIT_OWM_DLY_MSK);
|
| ( SOCKIT_OWM_CTL_CYC_MSK )
|
|
| ( SOCKIT_OWM_CTL_DLY_MSK ));
|
|
|
// wait for irq to set the transfer end flag
|
// wait for irq to set the transfer end flag
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
ALT_FLAG_PEND (sockit_owm.irq, 0x1, OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME, 0);
|
// wait for STX (end of transfer cycle)
|
// wait for STX (end of transfer cycle)
|
while (IORD_SOCKIT_OWM (sockit_owm.base) & SOCKIT_OWM_TRN_MSK);
|
while (IORD_SOCKIT_OWM_CTL (sockit_owm.base) & SOCKIT_OWM_CTL_CYC_MSK);
|
|
|
// release transfer lock
|
// release transfer lock
|
ALT_SEM_POST (sockit_owm.trn);
|
ALT_SEM_POST (sockit_owm.cyc);
|
}
|
}
|
#else
|
#else
|
#ifdef UCOS_II
|
#ifdef UCOS_II
|
// uCOS-II timed delay
|
// uCOS-II timed delay
|
OSTimeDlyHMSM(0,0,0,len);
|
OSTimeDlyHMSM(0,0,0,len);
|
