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asked 2023-10-06 14:59:57 +0000

chuanlu66 gravatar image

hf_register_info question

Hi,

how can we use this bit mask? does bit mask will mask sf19_func_vals?

for example, initially sf19_func_vals = 0xff, I set bitmask to 0x03 below, then final sf19_func_vals will be 0x03?

static hf_register_info hf[] = { { &hf_sf19_Func_Code, { "Function", "sf19.func", FT_UINT8, BASE_DEC, VALS(sf19_func_vals), 0x0, "Message Function Code Identifier", HFILL } },

{ &hf_sf19_Length,
    { "Length", "sf19.len",
      FT_UINT16, BASE_DEC, NULL, 0x0,
      "Message Length", HFILL }
},
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updated 2023-10-06 17:34:27 +0000

Jaap gravatar image

hf_register_info question

Hi,

how can we use this bit mask? does bit mask will mask sf19_func_vals?

for example, initially sf19_func_vals = 0xff, I set bitmask to 0x03 below, then final sf19_func_vals will be 0x03?

static hf_register_info hf[] = {  { &hf_sf19_Func_Code,  { "Function", "sf19.func",  FT_UINT8, BASE_DEC, VALS(sf19_func_vals), 0x0, 0x0,
          "Message Function Code Identifier", HFILL } },
}
    },      
 { &hf_sf19_Length,
     { "Length", "sf19.len",
       FT_UINT16, BASE_DEC, NULL, 0x0,
       "Message Length", HFILL }
 },