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Add info about the API in the README

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Signed-off-by: Joachim Strömbergson <joachim@assured.se>
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Joachim Strömbergson 2023-05-08 10:40:34 +02:00 committed by dehanj
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hw/application_fpga/core/uds/README.md
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@ -15,7 +15,20 @@ accessed. This means that the even if the chip select (cs) control
input is forced high, the content will become all zero when the read input is forced high, the content will become all zero when the read
bit has been set after one cycle. bit has been set after one cycle.
## API
There are eight addresses in the API. These are defined by the
two values ADDR_UDS_FIRST and ADDR_UDS_LAST:
´´´
ADDR_UDS_FIRST: 0x10
ADDR_UDS_LAST: 0x17
´´´
These addresses are read once.
Any access to another address will be ignored by the core.
## Implementation ## Implementation
The UDS words are implemented in discrete registers. The UDS words are implemented using discrete registers.