// range is 5=5V or 2=2.5V
static GOOD_OR_BAD OW_set_range( int range, struct parsedname * pn )
{
int stored_range ;
/* Range */
if ( BAD( Cache_Get_SlaveSpecific(&stored_range, sizeof(stored_range), SlaveSpecificTag(RAN), pn))
|| stored_range != range) {
// need to set resolution
BYTE p[_1W_2450_PAGESIZE];
RETURN_BAD_IF_BAD( OW_r_mem(p, _1W_2450_PAGESIZE, _ADDRESS_CONTROL_PAGE, pn) ) ;
switch ( range ) {
case 2:
p[_1W_2450_REG_A+1] &= ~_1W_2450_IR ;
p[_1W_2450_REG_B+1] &= ~_1W_2450_IR ;
p[_1W_2450_REG_C+1] &= ~_1W_2450_IR ;
p[_1W_2450_REG_D+1] &= ~_1W_2450_IR ;
break ;
case 5:
default:
p[_1W_2450_REG_A+1] |= _1W_2450_IR ;
p[_1W_2450_REG_B+1] |= _1W_2450_IR ;
p[_1W_2450_REG_C+1] |= _1W_2450_IR ;
p[_1W_2450_REG_D+1] |= _1W_2450_IR ;
break ;
}
RETURN_BAD_IF_BAD( OW_w_mem(p, _1W_2450_PAGESIZE, _ADDRESS_CONTROL_PAGE, pn) );
return Cache_Add_SlaveSpecific(&range, sizeof(int), SlaveSpecificTag(RAN), pn);
}
return gbGOOD ;
}
/* write flag */
static ZERO_OR_ERROR FS_w_flag(struct one_wire_query *owq)
{
struct parsedname *pn = PN(owq);
BYTE cr;
BYTE fl = pn->selected_filetype->data.c;
OWQ_allocate_struct_and_pointer(owq_flag);
OWQ_create_temporary(owq_flag, (char *) &cr, 1, 0x0201, pn);
if (COMMON_read_memory_F0(owq_flag, 0, 0)) {
return -EINVAL;
}
if (OWQ_Y(owq)) {
if (cr & fl) {
return 0;
}
} else {
if ((cr & fl) == 0) {
return 0;
}
}
cr ^= fl; /* flip the bit */
if (OW_w_mem(&cr, 1, 0x0201, pn)) {
return -EINVAL;
}
return 0;
}
/* Write a pio register */
static GOOD_OR_BAD OW_w_pio( int pio, struct parsedname *pn)
{
BYTE p[1];
RETURN_BAD_IF_BAD( OW_r_mem(p, 1, _ADDRESS_CONTROL_PAGE + 2 * pn->extension, pn) ) ;
p[0] |= _1W_2450_OE | _1W_2450_OC ;
if ( pio==0 ) {
p[0] &= ~_1W_2450_OC ;
}
return OW_w_mem(p, 1, _ADDRESS_CONTROL_PAGE + 2 * pn->extension, pn);
}
/* write powered flag */
static ZERO_OR_ERROR FS_w_power(struct one_wire_query *owq)
{
BYTE p = _1W_2450_POWERED; /* powered */
BYTE q = _1W_2450_UNPOWERED; /* parasitic */
if (OW_w_mem(OWQ_Y(owq) ? &p : &q, 1, _ADDRESS_POWERED, PN(owq))) {
return -EINVAL;
}
Cache_Add_SlaveSpecific(&OWQ_Y(owq), sizeof(int), SlaveSpecificTag(POW), PN(owq));
return 0;
}
static GOOD_OR_BAD OW_w_mask( int y, BYTE mask, struct parsedname *pn)
{
BYTE p[1];
RETURN_BAD_IF_BAD( OW_r_mem(p, 1, _ADDRESS_CONTROL_PAGE + 2 * pn->extension + 1, pn) ) ;
if ( y ) {
p[0] |= mask ;
} else {
p[0] &= ~mask ;
}
// Clear POR as well
p[0] &= ~_1W_2450_POR ;
return OW_w_mem(p, 1, _ADDRESS_CONTROL_PAGE + 2 * pn->extension + 1, pn) ;
}
/* write 4 or 5 byte number */
static GOOD_OR_BAD OW_w_ulong(uint64_t * L, size_t size, off_t offset, struct parsedname *pn)
{
BYTE data[5] = { 0x00, 0x00, 0x00, 0x00, 0x00, };
if (size > 5) {
return -ERANGE;
}
data[0] = BYTE_MASK(L[0]);
data[1] = BYTE_MASK(L[0] >> 8);
data[2] = BYTE_MASK(L[0] >> 16);
data[3] = BYTE_MASK(L[0] >> 24);
data[4] = BYTE_MASK(L[0] >> 32);
if (OW_w_mem(data, size, offset, pn)) {
return gbBAD;
}
return gbGOOD;
}
static GOOD_OR_BAD OW_w_vset( _FLOAT V, enum V_alarm_level ae, struct parsedname *pn)
{
BYTE p[_1W_2450_PAGESIZE];
RETURN_BAD_IF_BAD( OW_r_mem(p, 2, _ADDRESS_ALARM_PAGE + 2 * pn->extension, pn) ) ;
switch ( ae ) {
case V2_ae_high:
p[1] = 100. * V ;
break ;
case V2_ae_low:
p[0] = 100. * V ;
break ;
case V5_ae_high:
p[1] = 50. * V ;
break ;
case V5_ae_low:
p[0] = 50. * V ;
break ;
}
return OW_w_mem(p, 2, _ADDRESS_ALARM_PAGE + 2 * pn->extension, pn) ;
}
static GOOD_OR_BAD OW_set_resolution( int resolution, struct parsedname * pn )
{
int stored_resolution ;
/* Resolution */
if ( BAD( Cache_Get_SlaveSpecific(&stored_resolution, sizeof(stored_resolution), SlaveSpecificTag(RES), pn))
|| stored_resolution != resolution) {
// need to set resolution
BYTE p[_1W_2450_PAGESIZE];
RETURN_BAD_IF_BAD( OW_r_mem(p, _1W_2450_PAGESIZE, _ADDRESS_CONTROL_PAGE, pn) ) ;
p[_1W_2450_REG_A] &= ~_1W_2450_RC_MASK ;
p[_1W_2450_REG_A] |= ( resolution & _1W_2450_RC_MASK ) ;
p[_1W_2450_REG_B] &= ~_1W_2450_RC_MASK ;
p[_1W_2450_REG_B] |= ( resolution & _1W_2450_RC_MASK ) ;
p[_1W_2450_REG_C] &= ~_1W_2450_RC_MASK ;
p[_1W_2450_REG_C] |= ( resolution & _1W_2450_RC_MASK ) ;
p[_1W_2450_REG_D] &= ~_1W_2450_RC_MASK ;
p[_1W_2450_REG_D] |= ( resolution & _1W_2450_RC_MASK ) ;
RETURN_BAD_IF_BAD( OW_w_mem(p, _1W_2450_PAGESIZE, _ADDRESS_CONTROL_PAGE, pn) );
return Cache_Add_SlaveSpecific(&resolution, sizeof(int), SlaveSpecificTag(RES), pn);
}
return gbGOOD ;
}
/* alarm */
static ZERO_OR_ERROR FS_w_set_alarm(struct one_wire_query *owq)
{
BYTE c;
switch (OWQ_U(owq)) {
case 0:
c = 0 << 3;
break;
case 1:
c = 1 << 3;
break;
case 10:
c = 2 << 3;
break;
case 11:
c = 3 << 3;
break;
case 100:
c = 4 << 3;
break;
case 101:
c = 5 << 3;
break;
case 110:
c = 6 << 3;
break;
case 111:
c = 7 << 3;
break;
default:
return -ERANGE;
}
if (OW_w_mem(&c, 1, 0x200, PN(owq))) {
return -EINVAL;
}
return 0;
}
static ZERO_OR_ERROR FS_w_memory(struct one_wire_query *owq)
{
return GB_to_Z_OR_E(OW_w_mem((BYTE *) OWQ_buffer(owq), OWQ_size(owq), (size_t) OWQ_offset(owq), PN(owq))) ;
}