BASIC stamp manual v2.2

OWOUT – BASIC Stamp Command Reference
Page 306 • BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com
Conversion
Formatter
Type of Number Notes
DEC{1..5} Decimal, optionally fixed to 1 – 5 digits 1
SDEC{1..5} Signed decimal, optionally fixed to 1 – 5 digits 1,2
HEX{1..4} Hexadecimal, optionally fixed to 1 – 4 digits 1,3
SHEX{1..4} Signed hexadecimal, optionally fixed to 1 – 4 digits 1,2
IHEX{1..4} Indicated hexadecimal, optionally fixed to 1 – 4 digits ($ prefix) 1
ISHEX{1..4}
Signed, indicated hexadecimal, optionally fixed to 1 – 4 digits
($ prefix)
1,2
BIN{1..16} Binary, optionally fixed to 1 – 16 digits 1
SBIN{1..16} Signed binary, optionally fixed to 1 – 16 digits 1,2
IBIN{1..16} Indicated binary, optionally fixed to 1 – 16 digits (% prefix) 1
ISBIN{1..16}
Signed, indicated binary, optionally fixed to 1 – 16 digits (%
prefix)
1,2
Table 5.71: OWOUT Conversion
Formatters.
1 Fixed-digit formatters like DEC4 will pad the number with leading 0s if necessary; ex:
DEC4 65 sends 0065. If a number is larger than the specified number of digits, the
leading digits will be dropped; ex: DEC4 56422 sends 6422.
2 Signed modifiers work under two's complement rules.
3 The HEX modifier can be used for BCD to Decimal Conversion. See “Hex to BCD
Conversion” on page 97.
The 1-Wire protocol has a well-defined standard for transaction sequences.
Every transaction sequence consists of four parts: 1) Initialization, 2) ROM
Function Command, 3) Memory Function Command, and 4)
Transaction/Data. Additionally, the ROM Function Command and
Memory Function Command are always 8 bits wide (1 byte in size) and is
sent least-significant-bit (LSB) first.
The Initialization part consists of a reset pulse (generated by the master)
and will be followed by a presence pulse (generated by all slave devices).
Figure 5.24 details the reset pulse generated by the BASIC Stamp and a
typical presence pulse generated by a 1-Wire slave, in response.