Optimize some things

kicad/cpu.sch

@@ -3,7 +3,7 @@ EELAYER 30 0
 EELAYER END
 $Descr A4 11693 8268
 encoding utf-8
-Sheet 4 4
+Sheet 3 4
 Title ""
 Date "2020-10-03"
 Rev ""
@@ -206,7 +206,7 @@ L Switch:SW_Push SW?
 U 1 1 5F840B63
 P 850 1050
 F 0 "SW?" V 804 1198 50  0000 L CNN
-F 1 "SW_Push" V 895 1198 50  0000 L CNN
+F 1 "Reset" V 895 1198 50  0000 L CNN
 F 2 "" H 850 1250 50  0001 C CNN
 F 3 "~" H 850 1250 50  0001 C CNN
 	1    850  1050
@@ -587,4 +587,41 @@ Text HLabel 7150 4200 2    50   Input ~ 0
 AUDIO_L
 Text HLabel 7150 4300 2    50   Input ~ 0
 AUDIO_R
+Text Notes 6550 4200 0    50   ~ 0
+:ADC1_4
+Text Notes 6550 4300 0    50   ~ 0
+:ADC1_5
+$Comp
+L Connector:TestPoint TP?
+U 1 1 5F7A98FC
+P 7050 4600
+F 0 "TP?" V 7050 4800 50  0000 L CNN
+F 1 "PA8" V 7000 4550 50  0000 L CNN
+F 2 "" H 7250 4600 50  0001 C CNN
+F 3 "~" H 7250 4600 50  0001 C CNN
+	1    7050 4600
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	7050 4600 6550 4600
+Wire Wire Line
+	7050 4700 6550 4700
+$Comp
+L Connector:TestPoint TP?
+U 1 1 5F7AF4B9
+P 7050 4700
+F 0 "TP?" V 7050 4900 50  0000 L CNN
+F 1 "PA9" V 7000 4650 50  0000 L CNN
+F 2 "" H 7250 4700 50  0001 C CNN
+F 3 "~" H 7250 4700 50  0001 C CNN
+	1    7050 4700
+	0    1    1    0   
+$EndComp
+NoConn ~ 6550 4900
+NoConn ~ 5250 5000
+NoConn ~ 5250 4900
+NoConn ~ 5250 4500
+NoConn ~ 5250 4200
+NoConn ~ 5250 4100
+NoConn ~ 5250 4000
 $EndSCHEMATC

kicad/io.sch

@@ -277,7 +277,7 @@ L Connector:USB_B_Micro J?
 U 1 1 5F7ABAAB
 P 1000 2100
 F 0 "J?" H 1057 2567 50  0000 C CNN
-F 1 "USB_B_Micro" H 1057 2476 50  0000 C CNN
+F 1 "USB" H 1057 2476 50  0000 C CNN
 F 2 "" H 1150 2050 50  0001 C CNN
 F 3 "~" H 1150 2050 50  0001 C CNN
 	1    1000 2100
@@ -756,8 +756,8 @@ $EndComp
 Wire Wire Line
 	3800 5050 3800 4950
 Wire Wire Line
-	2550 4350 3000 4350
+	2250 4350 2800 4350
-Text Label 2550 4350 0    50   ~ 0
+Text Label 2250 4350 0    50   ~ 0
 AUDIO_IN_L
 $Comp
 L power:VDDA #PWR?
@@ -903,10 +903,6 @@ F 3 "" H 3800 6600 50  0001 C CNN
 $EndComp
 Wire Wire Line
 	3800 6600 3800 6500
-Wire Wire Line
-	2550 5900 3000 5900
-Text Label 2550 5900 0    50   ~ 0
-AUDIO_IN_R
 $Comp
 L power:VDDA #PWR?
 U 1 1 5F849D17
@@ -958,4 +954,66 @@ F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 1500 6600 50  0001 C CNN
 $EndComp
 Text Notes 3500 7100 0    50   ~ 0
 TODO: Set sensible\ngain for input stage.
+$Comp
+L Device:R R?
+U 1 1 5F7C2195
+P 2800 4600
+F 0 "R?" H 2600 4650 50  0000 L CNN
+F 1 "47k" H 2600 4550 50  0000 L CNN
+F 2 "" V 2730 4600 50  0001 C CNN
+F 3 "~" H 2800 4600 50  0001 C CNN
+	1    2800 4600
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2800 4450 2800 4350
+Connection ~ 2800 4350
+Wire Wire Line
+	2800 4350 3000 4350
+$Comp
+L power:GND #PWR?
+U 1 1 5F7DF715
+P 2800 5050
+F 0 "#PWR?" H 2800 4800 50  0001 C CNN
+F 1 "GND" H 2805 4877 50  0000 C CNN
+F 2 "" H 2800 5050 50  0001 C CNN
+F 3 "" H 2800 5050 50  0001 C CNN
+	1    2800 5050
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2800 5050 2800 4750
+Wire Wire Line
+	2250 5900 2800 5900
+Text Label 2250 5900 0    50   ~ 0
+AUDIO_IN_R
+$Comp
+L Device:R R?
+U 1 1 5F7F1A27
+P 2800 6150
+F 0 "R?" H 2600 6200 50  0000 L CNN
+F 1 "47k" H 2600 6100 50  0000 L CNN
+F 2 "" V 2730 6150 50  0001 C CNN
+F 3 "~" H 2800 6150 50  0001 C CNN
+	1    2800 6150
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2800 6000 2800 5900
+Connection ~ 2800 5900
+Wire Wire Line
+	2800 5900 3000 5900
+$Comp
+L power:GND #PWR?
+U 1 1 5F7F1A34
+P 2800 6600
+F 0 "#PWR?" H 2800 6350 50  0001 C CNN
+F 1 "GND" H 2805 6427 50  0000 C CNN
+F 2 "" H 2800 6600 50  0001 C CNN
+F 3 "" H 2800 6600 50  0001 C CNN
+	1    2800 6600
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	2800 6600 2800 6300
 $EndSCHEMATC

kicad/sabik-cpu-cache.lib

@@ -172,6 +172,23 @@ X Pin_4 4 -200 -200 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Connector_TestPoint
+#
+DEF Connector_TestPoint TP 0 30 N N 1 F N
+F0 "TP" 0 270 50 H V C CNN
+F1 "Connector_TestPoint" 0 200 50 H V C CNN
+F2 "" 200 0 50 H I C CNN
+F3 "" 200 0 50 H I C CNN
+$FPLIST
+ Pin*
+ Test*
+$ENDFPLIST
+DRAW
+C 0 130 30 0 1 0 N
+X 1 1 0 0 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Connector_USB_B_Micro
 #
 DEF Connector_USB_B_Micro J 0 40 Y Y 1 F N