/* only called for a single page, and that page is 0,1,2 only*/
static GOOD_OR_BAD OW_w_page(const BYTE * data, size_t size, off_t offset, const struct parsedname *pn)
{
int page = offset / _1W_2436_PAGESIZE; // integer round-down ok
BYTE scratchin[] = { _1W_READ_SCRATCHPAD, offset, };
BYTE scratchout[] = { _1W_WRITE_SCRATCHPAD, offset, };
BYTE p[_1W_2436_PAGESIZE];
static BYTE copyout[] = { _1W_COPY_SP1_TO_NV1, _1W_COPY_SP2_TO_NV2, _1W_COPY_SP3_TO_NV3, };
BYTE *copy = ©out[page];
struct transaction_log twrite[] = {
TRXN_START,
TRXN_WRITE2(scratchout),
TRXN_WRITE(data, size),
TRXN_END,
};
struct transaction_log tread[] = {
TRXN_START,
TRXN_WRITE2(scratchin),
TRXN_READ(p, size),
TRXN_COMPARE(data, p, size),
TRXN_END,
};
struct transaction_log tcopy[] = {
TRXN_START,
TRXN_WRITE1(copy),
TRXN_DELAY(10),
TRXN_END,
};
RETURN_BAD_IF_BAD(BUS_transaction(twrite, pn)) ;
RETURN_BAD_IF_BAD(BUS_transaction(tread, pn)) ;
return BUS_transaction(tcopy, pn) ;
}
/* 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) ;
}
/* Byte-oriented write */
static GOOD_OR_BAD OW_w_mem(const BYTE * data, size_t size, off_t offset, const struct parsedname *pn)
{
BYTE scratch[_DS2430A_MEM_SIZE];
BYTE vr[] = { _1W_READ_SCRATCHPAD, BYTE_MASK(offset), };
BYTE of[] = { _1W_WRITE_SCRATCHPAD, BYTE_MASK(offset), };
BYTE cp[] = { _1W_COPY_SCRATCHPAD, _1W_COPY_SCRATCHPAD_VALIDATION_KEY, };
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE2(of),
TRXN_WRITE(data, size),
TRXN_START,
TRXN_WRITE2(vr),
TRXN_READ(scratch, size),
TRXN_COMPARE(data,scratch,size),
TRXN_START,
TRXN_WRITE2(cp),
TRXN_DELAY(10),
TRXN_END,
};
/* load scratch pad if incomplete write */
if ( size != _DS2430A_MEM_SIZE ) {
RETURN_BAD_IF_BAD( OW_r_mem( scratch, 0, 0x00, pn)) ;
}
/* write data to scratchpad */
/* read back the scratchpad */
/* copy scratchpad to memory */
return BUS_transaction(t, pn);
}
/* 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);
}
}
/* write Charge Pump */
static GOOD_OR_BAD OW_w_cp(const int val, const struct parsedname *pn)
{
BYTE resp[1];
BYTE cmd[] = { _1W_WRITE_CONTROL_REGISTER, (val) ? 0x4C : 0x0C };
BYTE ns[] = { _1W_RELEASE_WIPER, };
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE2(cmd),
TRXN_READ1(resp),
TRXN_WRITE1(ns),
TRXN_COMPARE(resp, &cmd[1], 1),
TRXN_END
};
return BUS_transaction(t, pn);
}
/* write Wiper */
static GOOD_OR_BAD OW_w_wiper(const UINT val, const struct parsedname *pn)
{
BYTE resp[1];
BYTE cmd[] = { _1W_WRITE_POSITION, (BYTE) val, };
BYTE ns[] = { _1W_RELEASE_WIPER, };
struct transaction_log t[] = {
TRXN_START,
TRXN_WRITE2(cmd),
TRXN_READ1(resp),
TRXN_WRITE1(ns),
TRXN_COMPARE(resp, &cmd[1], 1),
TRXN_END
};
return BUS_transaction(t, pn);
}
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) ;
}
/* 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;
}
