/* write alarm settings */
static GOOD_OR_BAD OW_w_s_alarm(const BYTE * data, const struct parsedname *pn)
{
BYTE old_register[6];
BYTE new_register[6];
BYTE control_value[1];
BYTE alarm_access[] = { _1W_WRITE_CONDITIONAL_SEARCH_REGISTER,
LOW_HIGH_ADDRESS(_ADDRESS_ALARM_REGISTERS),
};
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE3(alarm_access),
TRXN_WRITE2(data),
TRXN_WRITE1(control_value),
TRXN_END,
};
// get the existing register contents
RETURN_BAD_IF_BAD( OW_r_reg(old_register, pn) ) ;
control_value[0] = (data[2] & 0x03) | (old_register[5] & 0x0C);
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
/* Re-Read registers */
RETURN_BAD_IF_BAD(OW_r_reg(new_register, pn)) ;
return (data[0] != new_register[3]) || (data[1] != new_register[4])
|| (control_value[0] != (new_register[5] & 0x0F)) ? gbBAD : gbGOOD;
}
/* PAged access -- pre-screened */
static GOOD_OR_BAD OW_w_mem(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[4 + 32] = { _1W_WRITE_SCRATCHPAD, LOW_HIGH_ADDRESS(offset), };
struct transaction_log tcopy[] = {
TRXN_START,
TRXN_WRITE3(p),
TRXN_WRITE(data, size),
TRXN_END,
};
struct transaction_log tread[] = {
TRXN_START,
TRXN_WRITE1(p),
TRXN_READ(&p[1], 3 + size),
TRXN_COMPARE(data, &p[4], size),
TRXN_END,
};
struct transaction_log tsram[] = {
TRXN_START,
TRXN_WRITE(p, 4),
TRXN_DELAY(32),
TRXN_END,
};
/* Copy to scratchpad */
RETURN_BAD_IF_BAD(BUS_transaction(tcopy, pn)) ;
/* Re-read scratchpad and compare */
p[0] = _1W_READ_SCRATCHPAD;
RETURN_BAD_IF_BAD(BUS_transaction(tread, pn)) ;
/* Copy Scratchpad to SRAM */
p[0] = _1W_COPY_SCRATCHPAD;
return BUS_transaction(tsram, pn) ;
}
/* Write control/status */
static GOOD_OR_BAD OW_w_control(const BYTE data, const struct parsedname *pn)
{
BYTE write_string[1 + 2 + 1] = { _1W_WRITE_CONDITIONAL_SEARCH_REGISTER,
LOW_HIGH_ADDRESS(_ADDRESS_CONTROL_STATUS_REGISTER), data,
};
BYTE check_string[1 + 2 + 3 + 2] = { _1W_READ_PIO_REGISTERS,
LOW_HIGH_ADDRESS(_ADDRESS_CONTROL_STATUS_REGISTER),
};
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE(write_string, 4),
/* Read registers */
TRXN_START,
TRXN_WR_CRC16(check_string, 3, 3),
TRXN_END,
};
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
return ((data & 0x0F) != (check_string[3] & 0x0F)) ? gbBAD : gbGOOD ;
}
/* paged, and pre-screened */
static GOOD_OR_BAD OW_w_23page(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[1 + 2 + 32 + 2] = { _1W_WRITE_SCRATCHPAD, LOW_HIGH_ADDRESS(offset), };
struct transaction_log tcopy[] = {
TRXN_START,
TRXN_WR_CRC16(p, 3 + size, 0),
TRXN_END,
};
struct transaction_log treread[] = {
TRXN_START,
TRXN_WRITE1(p),
TRXN_READ(&p[1], 3 + size),
TRXN_COMPARE(&p[4], data, size),
TRXN_END,
};
struct transaction_log twrite33[] = {
TRXN_START,
TRXN_WRITE(p, 4),
TRXN_DELAY(5),
TRXN_END,
};
struct transaction_log twriteEC20[] = {
TRXN_START,
TRXN_WRITE(p, 4),
TRXN_DELAY(10),
TRXN_END,
};
/* Copy to scratchpad */
memcpy(&p[3], data, size);
if (((offset + size) & 0x1F)) { // doesn't end on page boundary, no crc16
tcopy[2].type = tcopy[3].type = trxn_nop;
}
RETURN_BAD_IF_BAD(BUS_transaction(tcopy, pn)) ;
/* Re-read scratchpad and compare */
/* Note that we tacitly shift the data one byte down for the E/S byte */
p[0] = _1W_READ_SCRATCHPAD;
RETURN_BAD_IF_BAD(BUS_transaction(treread, pn)) ;
/* Copy Scratchpad to SRAM */
p[0] = _1W_COPY_SCRATCHPAD;
switch (pn->sn[0]) {
case 0x23: // DS2433
return BUS_transaction(twrite33,pn);
case 0x43:
default: // DS28EC20
return BUS_transaction(twriteEC20,pn);
}
}
/* No CRC -- 0xF0 code */
GOOD_OR_BAD COMMON_read_memory_F0(struct one_wire_query *owq, size_t page, size_t pagesize)
{
off_t offset = OWQ_offset(owq) + page * pagesize;
BYTE p[3] = { _1W_READ_F0, LOW_HIGH_ADDRESS(offset), };
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE3(p),
TRXN_READ((BYTE *) OWQ_buffer(owq), OWQ_size(owq)),
TRXN_END,
};
Set_OWQ_length(owq);
return BUS_transaction(t, PN(owq));
}
// use new read_all command
static GOOD_OR_BAD OW_r_all(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[4] = { _1W_READ_ALL, LOW_HIGH_ADDRESS(offset), };
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE3(p),
TRXN_READ1(&p[3]),
TRXN_CRC8(p, 4),
TRXN_READ(data, size),
};
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
return gbGOOD;
}
/* Extra 8 bytes, too */
GOOD_OR_BAD COMMON_read_memory_plus_counter(BYTE * extra, size_t page, size_t pagesize, struct parsedname *pn)
{
off_t offset = (page + 1) * pagesize - _1W_Throw_Away_Bytes; // last byte of page
BYTE p[3 + _1W_Throw_Away_Bytes + 8 + 2] = { _1W_READ_A5, LOW_HIGH_ADDRESS(offset), };
struct transaction_log t[] = {
TRXN_START,
TRXN_WR_CRC16(p, 3, _1W_Throw_Away_Bytes + 8),
TRXN_END,
};
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
memcpy(extra, &p[3 + _1W_Throw_Away_Bytes], 8);
LEVEL_DEBUG("Counter Data: %.2X %.2X %.2X %.2X %.2X %.2X %.2X %.2X", extra[0], extra[1], extra[2], extra[3], extra[4], extra[5], extra[6], extra[7] );
return gbGOOD;
}
/* Read 6 bytes --
0x88 PIO logic State
0x89 PIO output Latch state
0x8A PIO Activity Latch
0x8B Conditional Ch Mask
0x8C Londitional Ch Polarity
0x8D Control/Status
plus 2 more bytes to get to the end of the page and qualify for a CRC16 checksum
*/
static GOOD_OR_BAD OW_r_reg(BYTE * data, const struct parsedname *pn)
{
BYTE p[3 + 8 + 2] = { _1W_READ_PIO_REGISTERS,
LOW_HIGH_ADDRESS(_ADDRESS_PIO_LOGIC_STATE),
};
struct transaction_log t[] = {
TRXN_START,
TRXN_WR_CRC16(p, 3, 8),
TRXN_END,
};
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
memcpy(data, &p[3], 6);
return gbGOOD;
}
static GOOD_OR_BAD OW_w_byte(BYTE data, off_t offset, struct parsedname *pn)
{
BYTE p[5] = { _1W_WRITE_MEMORY, LOW_HIGH_ADDRESS(offset), data, 0xFF };
BYTE q[1];
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE(p,4),
TRXN_READ1(&p[4]),
TRXN_CRC8(p, 4+1),
TRXN_PROGRAM,
TRXN_READ1(q),
TRXN_COMPARE(q,&data,1) ,
TRXN_END,
};
return BUS_transaction(t, pn) ;
}
/* read REAL DS2431 pages -- 8 bytes. */
static GOOD_OR_BAD OW_w_2Dpage(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
off_t pageoff = offset & 0x07;
BYTE p[4 + 8 + 2] = { _1W_WRITE_SCRATCHPAD, LOW_HIGH_ADDRESS(offset - pageoff),
};
struct transaction_log tcopy[] = {
TRXN_START,
TRXN_WRITE(p, 3 + 8),
TRXN_END,
};
struct transaction_log tread[] = {
TRXN_START,
TRXN_WR_CRC16(p, 1, 3 + 8),
TRXN_COMPARE(&p[4], data, size),
TRXN_END,
};
struct transaction_log tsram[] = {
TRXN_START,
TRXN_WRITE(p, 4),
TRXN_DELAY(13),
TRXN_END,
};
if (size != 8) { // incomplete page
OWQ_allocate_struct_and_pointer(owq_old);
OWQ_create_temporary(owq_old, (char *) &p[3], 8, offset - pageoff, pn);
if (COMMON_read_memory_F0(owq_old, 0, 0)) {
return gbBAD;
}
}
memcpy(&p[3 + pageoff], data, size);
/* Copy to scratchpad */
RETURN_BAD_IF_BAD(BUS_transaction(tcopy, pn)) ;
/* Re-read scratchpad and compare */
p[0] = _1W_READ_SCRATCHPAD;
RETURN_BAD_IF_BAD(BUS_transaction(tread, pn)) ;
/* Copy Scratchpad to SRAM */
p[0] = _1W_COPY_SCRATCHPAD;
return BUS_transaction(tsram, pn) ;
}
// reads to end of page and discards extra
// uses CRC8
static GOOD_OR_BAD OW_r_page(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[4] = { _1W_READ_DATA_CRC8, LOW_HIGH_ADDRESS(offset), };
BYTE q[33];
int rest = 33 - (offset & 0x1F);
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE3(p),
TRXN_READ1(&p[3]),
TRXN_CRC8(p, 4),
TRXN_READ(q, rest),
TRXN_CRC8(q, rest),
TRXN_END,
};
RETURN_BAD_IF_BAD(BUS_transaction(t, pn)) ;
memcpy(data, q, size);
return gbGOOD;
}
static GOOD_OR_BAD OW_w_status(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[6] = { _1W_WRITE_STATUS, LOW_HIGH_ADDRESS(offset), data[0] };
GOOD_OR_BAD ret = gbGOOD;
struct transaction_log tfirst[] = {
TRXN_START,
TRXN_WR_CRC16(p, 4, 0),
TRXN_PROGRAM,
TRXN_READ1(p),
TRXN_END,
};
if (size == 0) {
return gbGOOD;
}
if (size == 1) {
return BUS_transaction(tfirst, pn) || (p[0] & (~data[0]));
}
BUSLOCK(pn);
if ( BAD(BUS_transaction(tfirst, pn)) || (p[0] & ~data[0])) {
ret = gbBAD;
} else {
size_t i;
const BYTE *d = &data[1];
UINT s = offset + 1;
struct transaction_log trest[] = {
//TRXN_WR_CRC16_SEEDED( p, &s, 1, 0 ) ,
TRXN_WR_CRC16_SEEDED(p, p, 1, 0),
TRXN_PROGRAM,
TRXN_READ1(p),
TRXN_END,
};
for (i = 0; i < size; ++i, ++d, ++s) {
if ( BAD(BUS_transaction(trest, pn)) || (p[0] & ~d[0])) {
ret = gbBAD;
break;
}
}
}
BUSUNLOCK(pn);
return ret;
}
/* paged, and pre-screened */
static GOOD_OR_BAD OW_w_mem(BYTE * data, size_t size, off_t offset, struct parsedname *pn)
{
BYTE p[1 + 2 + 32 + 2] = { _1W_WRITE_SCRATCHPAD, LOW_HIGH_ADDRESS(offset), };
struct transaction_log tcopy[] = {
TRXN_START,
TRXN_WRITE(p, 3 + size),
TRXN_END,
};
struct transaction_log tcopy_crc16[] = {
TRXN_START,
TRXN_WR_CRC16(p, 3 + size, 0),
TRXN_END,
};
struct transaction_log tread[] = {
TRXN_START,
TRXN_WRITE1(p),
TRXN_READ(&p[1], 3 + size),
TRXN_COMPARE(data, &p[4], size),
TRXN_END,
};
struct transaction_log tsram[] = {
TRXN_START,
TRXN_WRITE(p, 4),
TRXN_END,
};
/* Copy to scratchpad */
memcpy(&p[3], data, size);
RETURN_BAD_IF_BAD(BUS_transaction(((offset + size) & 0x1F) != 0 ? tcopy : tcopy_crc16, pn)) ;
/* Re-read scratchpad and compare */
/* Note that we tacitly shift the data one byte down for the E/S byte */
p[0] = _1W_READ_SCRATCHPAD;
RETURN_BAD_IF_BAD(BUS_transaction(tread, pn)) ;
/* Copy Scratchpad to SRAM */
p[0] = _1W_COPY_SCRATCHPAD;
return BUS_transaction(tsram, pn) ;
}
/* write to 2450 */
static GOOD_OR_BAD OW_w_mem(BYTE * p, size_t size, off_t offset, struct parsedname *pn)
{
// command, address(2) , data , crc(2), databack
BYTE buf[6] = { _1W_WRITE_MEMORY, LOW_HIGH_ADDRESS(offset), p[0], };
BYTE echo[1];
size_t i;
struct transaction_log tfirst[] = {
TRXN_START,
TRXN_WR_CRC16(buf, 4, 0),
TRXN_READ1(echo),
TRXN_COMPARE(echo, p, 1),
TRXN_END,
};
struct transaction_log trest[] = { // note no TRXN_START
TRXN_WRITE1(buf),
TRXN_READ2(&buf[1]),
TRXN_READ1(echo),
TRXN_END,
};
//printf("2450 W mem size=%d location=%d\n",size,location) ;
if (size == 0) {
return gbGOOD;
}
/* Send the first byte (handled differently) */
RETURN_BAD_IF_BAD(BUS_transaction(tfirst, pn)) ;
/* rest of the bytes */
for (i = 1; i < size; ++i) {
buf[0] = p[i];
RETURN_BAD_IF_BAD( BUS_transaction(trest, pn) ) ;
if ( CRC16seeded(buf, 3, offset + i) || (echo[0] != p[i]) ) {
return gbBAD;
}
}
return gbGOOD;
}
