HW profile ID (HWPID) uniquely specifies the functionality of the device, the user peripherals, and FRC it implements, its behavior etc. HWPID as a mandatory part of the DPA request message can also be used to ensure that only certain devices execute DPA request. Unique HWPID values are allocated by IQRF Alliance primarily for standard and certified devices in order to maintain its uniqueness.
HWPID is actually a 2-byte wide value coded using little-endian style. It stores both manufacturer unique ID (primary key) and unique (manufacturer’s) product ID (secondary key). There are 4 versions (classes) of the magnitude of the Manufacturer vs. Products groups.
|
Product |
Manufacturer class #1 |
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|
bit.15 |
bit.14 |
bit.13 |
bit.12 |
bit.11 |
bit.10 |
bit.9 |
bit.8 |
bit.7 |
bit.6 |
bit.5 |
bit.4 |
bit.3 |
bit.2 |
bit.1 |
bit.0 |
|
x |
x |
x |
x |
x |
x |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
x |
x |
0 |
|
Product ID |
|
|
|
|
|
|
|
Manufacturer ID |
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|
Product |
Manufacturer class #2 |
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|
bit.15 |
bit.14 |
bit.13 |
bit.12 |
bit.11 |
bit.10 |
bit.9 |
bit.8 |
bit.7 |
bit.6 |
bit.5 |
bit.4 |
bit.3 |
bit.2 |
bit.1 |
bit.0 |
|
x |
x |
x |
x |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
x |
x(1) |
x(1) |
x(1) |
1(1) |
|
Product ID |
|
|
|
|
|
|
|
Manufacturer ID |
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|
Product |
Manufacturer class #3 |
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|
bit.15 |
bit.14 |
bit.13 |
bit.12 |
bit.11 |
bit.10 |
bit.9 |
bit.8 |
bit.7 |
bit.6 |
bit.5 |
bit.4 |
bit.3 |
bit.2 |
bit.1 |
bit.0 |
|
x |
x |
x |
x |
x |
x |
x(2) |
x(2) |
x(2) |
x(2) |
x(2) |
x(2) |
x(2) |
x |
x |
0 |
|
Product ID |
Manufacturer ID |
||||||||||||||
|
Product |
Manufacturer class #4 |
||||||||||||||
|
bit.15 |
bit.14 |
bit.13 |
bit.12 |
bit.11 |
bit.10 |
bit.9 |
bit.8 |
bit.7 |
bit.6 |
bit.5 |
bit.4 |
bit.3 |
bit.2 |
bit.1 |
bit.0 |
|
x |
x |
x |
x |
x(3) |
x(3) |
x(3) |
x(3) |
x(3) |
x(3) |
x(3) |
x |
x(1) |
x(1) |
x(1) |
1(1) |
|
Product ID |
Manufacturer ID |
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(1) bit.[0-3] ≠ [1111] (because of reserved HWPIDs 0x???F)
(2) bit.[3-9] ≠ [0000000]
(3) bit.[5-11] ≠ [0000000]
Product Product ID. In case the range does not fit all devices from the manufacturer an extra manufacturer’s ID will be assigned.
Manufacturer Manufacturer ID.
Summary: there are four classes of Manufacturers:
1. Up to 4 (2^2) manufacturers with up to 64 products for each manufacturer.
2. Up to 14 (2^4 - 2^1) manufacturers with up to 16 products for each manufacturer.
3. Up to 2032 (2^11 - 2^4) manufacturers with up to 16 products for each manufacturer.
4. Up to 7112 (2^13 - 2^6 - 2^10 + 2^3) manufacturers with up to 4 products for each manufacturer.