Modify usbcan for using ringbuffer, refresh kicad schematic & PCB

F0:F030,F042,F072/usbcan_ringbuffer/kicad/gerbers/stm32.drl

@@ -0,0 +1,121 @@
+M48
+; DRILL file {KiCad 6.0.5} date Пт 28 окт 2022 16:52:02
+; FORMAT={-:-/ absolute / metric / decimal}
+; #@! TF.CreationDate,2022-10-28T16:52:02+03:00
+; #@! TF.GenerationSoftware,Kicad,Pcbnew,6.0.5
+; #@! TF.FileFunction,MixedPlating,1,2
+FMAT,2
+METRIC
+; #@! TA.AperFunction,Plated,PTH,ViaDrill
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+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
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+; #@! TA.AperFunction,Plated,PTH,ViaDrill
+T3C0.600
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T4C0.650
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T5C0.700
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T6C0.800
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T7C0.950
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T8C1.300
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T9C2.300
+; #@! TA.AperFunction,Plated,PTH,ComponentDrill
+T10C3.000
+%
+G90
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