Changes between Version 5 and Version 6 of howto/bitfields_in_microblaze

Timestamp:

Feb 18, 2015, 10:57:48 AM (9 years ago)

Author:

chunter

Comment:

--

howto/bitfields_in_microblaze

@@ -194 +194 @@
 }}}
 
-{{{phy_header}}} is a struct made up of two bit-fields ({{{l_sig_bf}}} and {{{ht_sig_bf}}}) followed by a 16-bit variable {{{service}}}.
+{{{phy_header}}} is a struct made up of two bit-fields ({{{l_sig_bf}}} and {{{ht_sig_bf}}}) followed by a 16-bit variable {{{service}}}. We now define a function that will print these various elements when given a pointer to a {{{phy_header}}} struct:
+
+{{{
+#!div style="font-size: 90%"
+  {{{#!C
+void print_phy_header(phy_header* my_header){
+        xil_printf("L-SIG Rate:            %d\n",   my_header->l_sig.rate);
+        xil_printf("L-SIG Reserved:        %d\n",   my_header->l_sig.reserved);
+        xil_printf("L-SIG Length:          %d\n",   my_header->l_sig.length);
+        xil_printf("L-SIG Parity:          %d\n",   my_header->l_sig.parity);
+        xil_printf("L-SIG Tail:            %d\n",   my_header->l_sig.tail);
+        xil_printf("HT-SIG MCS:            %d\n",   my_header->ht_sig.mcs);
+        xil_printf("HT-SIG BW:             %d\n",   my_header->ht_sig.bw);
+        xil_printf("HT-SIG LEN:            %d\n",   my_header->ht_sig.len);
+        xil_printf("HT-SIG SMOOTHING:      %d\n",   my_header->ht_sig.smoothing);
+        xil_printf("HT-SIG NOT_SOUNDING:   %d\n",   my_header->ht_sig.not_sounding);
+        xil_printf("HT-SIG RESERVED:       %d\n",   my_header->ht_sig.reserved);
+        xil_printf("HT-SIG AGG:            %d\n",   my_header->ht_sig.agg);
+        xil_printf("HT-SIG STBC:           %d\n",   my_header->ht_sig.stbc);
+        xil_printf("HT-SIG FEC:            %d\n",   my_header->ht_sig.fec);
+        xil_printf("HT-SIG SHORT_GI:       %d\n",   my_header->ht_sig.short_gi);
+        xil_printf("HT-SIG N_ESS:          %d\n",   my_header->ht_sig.n_ess);
+        xil_printf("HT-SIG CRC:            %d\n",   my_header->ht_sig.crc);
+        xil_printf("HT-SIG TAIL:           %d\n",   my_header->ht_sig.tail);
+        xil_printf("Service:               0x%x\n", my_header->service);
+}
+  }}}
+}}}
+
+Finally, we use this struct to recast the {{{rx_bytes}} array defined earlier and print the result:
+
+{{{
+#!div style="font-size: 90%"
+  {{{#!C
+void print_phy_header(phy_header* my_header){
+        print_phy_header( (phy_header*)rx_bytes );
+}
+  }}}
+}}}
+
+
+
 
 = Example: Register Access =