[ZAP] The generated defaults in endpoint_config.h does not comply with endianness

[tlykkeberg-grundfos]

Problem

When setting a default value for a particular attribute in the .zap file, the resulting generated file endpoint_config.h does not reflect the big-endian and little-endian versions correctly. They are both stored big-endian wise. That would be expected to be different in the two GENERATED_DEFAULTS tables for big- and little-endian.

Example:
Setting the LifetimeRunningHours in the PCC cluster to 0x123456 in the ZAP UI tool, and then saving the .zap file, results in the following content in the .zap file. Which is correct.

            {
              "name": "LifetimeRunningHours",
              "code": 21,
              "mfgCode": null,
              "side": "server",
              "included": 1,
              "storageOption": "RAM",
              "singleton": 0,
              "bounded": 0,
              "defaultValue": "0x123456",
              "reportable": 0,
              "minInterval": 1,
              "maxInterval": 65534,
              "reportableChange": 0
            },

Then running the ./scripts/tools/zap_regen_all.py script generates the following contents in the endpoint_config.h file.

#if BIGENDIAN_CPU
#define GENERATED_DEFAULTS                                                                                                         \
    {                                                                                                                              \
.......
            /* Endpoint: 1, Cluster: Pump Configuration and Control (server), big-endian */                                        \
                                                                                                                                   \
            /* 1377 - LifetimeRunningHours, */                                                                                     \
            0x12, 0x34, 0x56,                                                                                                      \
.......
#else // !BIGENDIAN_CPU
#define GENERATED_DEFAULTS                                                                                                         \
    {                                                                                                                              \
.......
            /* Endpoint: 1, Cluster: Pump Configuration and Control (server), little-endian */                                     \
                                                                                                                                   \
            /* 1377 - LifetimeRunningHours, */                                                                                     \
            0x12, 0x34, 0x56,                                                                                                      \
                                                                                                                                   \
.......
    }

#endif // BIGENDIAN_CPU

Proposed Solution

Make the ZAP tool generate the correct default values in the endpoint_config.h files.

[jmeg-sfy]

It is a known issues which block FeatureMap for example, some work has already been down to fix it.
So i guess there are already tickets open for this
@vivien-apple @tecimovic

[jmeg-sfy]

#9725