Add PS/2 support -- ps2io module

locale/ID.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -518,6 +518,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Channel EXTINT sedang digunakan"
@@ -546,6 +547,10 @@ msgstr ""
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -932,6 +937,10 @@ msgstr "Tidak ada GCLK yang kosong"
 msgid "No hardware random available"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1015,6 +1024,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr "Tambahkan module apapun pada filesystem\n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2176,7 +2189,7 @@ msgstr ""
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr ""
 

locale/circuitpython.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:41-0700\n"
+"POT-Creation-Date: 2019-05-22 16:00-0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -506,6 +506,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr ""
@@ -534,6 +535,10 @@ msgstr ""
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr ""
@@ -907,6 +912,10 @@ msgstr ""
 msgid "No hardware random available"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -989,6 +998,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2131,7 +2144,7 @@ msgstr ""
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr ""
 

locale/de_DE.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: Pascal Deneaux\n"
 "Language-Team: Sebastian Plamauer, Pascal Deneaux\n"
@@ -510,6 +510,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Drive mode wird nicht verwendet, wenn die Richtung input ist."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "EXTINT Kanal ist schon in Benutzung"
@@ -538,6 +539,10 @@ msgstr "Eine UUID wird erwartet"
 msgid "Expected tuple of length %d, got %d"
 msgstr "Habe ein Tupel der Länge %d erwartet aber %d erhalten"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr "Akquirieren des Mutex gescheitert"
@@ -920,6 +925,10 @@ msgstr "Keine freien GCLKs"
 msgid "No hardware random available"
 msgstr "Kein hardware random verfügbar"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1004,6 +1013,10 @@ msgstr "Pixel außerhalb der Puffergrenzen"
 msgid "Plus any modules on the filesystem\n"
 msgstr "und alle Module im Dateisystem \n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2178,7 +2191,7 @@ msgstr "Objekt ist kein Iterator"
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "Objekt ist nicht in sequence"
 

locale/en_US.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -506,6 +506,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr ""
@@ -534,6 +535,10 @@ msgstr ""
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr ""
@@ -907,6 +912,10 @@ msgstr ""
 msgid "No hardware random available"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -989,6 +998,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2131,7 +2144,7 @@ msgstr ""
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr ""
 

locale/en_x_pirate.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-07-27 11:55-0700\n"
 "Last-Translator: \n"
 "Language-Team: @sommersoft, @MrCertainly\n"
@@ -510,6 +510,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Avast! EXTINT channel already in use"
@@ -538,6 +539,10 @@ msgstr ""
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr ""
@@ -911,6 +916,10 @@ msgstr ""
 msgid "No hardware random available"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -993,6 +1002,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2135,7 +2148,7 @@ msgstr ""
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr ""
 

locale/es.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-08-24 22:56-0500\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -524,6 +524,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Modo Drive no se usa cuando la dirección es input."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "El canal EXTINT ya está siendo utilizado"
@@ -554,6 +555,10 @@ msgstr "Se espera un %q"
 msgid "Expected tuple of length %d, got %d"
 msgstr "Se esperaba un tuple de %d, se obtuvo %d"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -946,6 +951,10 @@ msgstr "Sin GCLKs libres"
 msgid "No hardware random available"
 msgstr "No hay hardware random disponible"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1035,6 +1044,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr "Incapaz de montar de nuevo el sistema de archivos"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2213,7 +2226,7 @@ msgstr "objeto no es un iterator"
 msgid "object not callable"
 msgstr "objeto no puede ser llamado"
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "objeto no en secuencia"
 

locale/fil.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-12-20 22:15-0800\n"
 "Last-Translator: Timothy <me@timothygarcia.ca>\n"
 "Language-Team: fil\n"
@@ -519,6 +519,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Drive mode ay hindi ginagamit kapag ang direksyon ay input."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Ginagamit na ang EXTINT channel"
@@ -549,6 +550,10 @@ msgstr "Umasa ng %q"
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -941,6 +946,10 @@ msgstr "Walang libreng GCLKs"
 msgid "No hardware random available"
 msgstr "Walang magagamit na hardware random"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1028,6 +1037,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr "Kasama ang kung ano pang modules na sa filesystem\n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2212,7 +2225,7 @@ msgstr "object ay hindi iterator"
 msgid "object not callable"
 msgstr "hindi matatawag ang object"
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "object wala sa sequence"
 

locale/fr.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 0.1\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2019-04-14 20:05+0100\n"
 "Last-Translator: Pierrick Couturier <arofarn@arofarn.info>\n"
 "Language-Team: fr\n"
@@ -522,6 +522,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Le mode Drive n'est pas utilisé quand la direction est 'input'."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Canal EXTINT déjà utilisé"
@@ -552,6 +553,10 @@ msgstr "Un UUID est attendu"
 msgid "Expected tuple of length %d, got %d"
 msgstr "Tuple de longueur %d attendu, obtenu %d"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -949,6 +954,10 @@ msgstr "Pas de GCLK libre"
 msgid "No hardware random available"
 msgstr "Pas de source matérielle d'aléa disponible"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1045,6 +1054,10 @@ msgstr "Pixel au-delà des limites du tampon"
 msgid "Plus any modules on the filesystem\n"
 msgstr "Ainsi que tout autre module présent sur le système de fichiers\n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr "Appuyez sur une touche pour entrer sur REPL ou CTRL-D pour recharger."
@@ -2247,7 +2260,7 @@ msgstr "l'objet n'est pas un itérateur"
 msgid "object not callable"
 msgstr "objet non appelable"
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "l'objet n'est pas dans la séquence"
 

locale/it_IT.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-10-02 16:27+0200\n"
 "Last-Translator: Enrico Paganin <enrico.paganin@mail.com>\n"
 "Language-Team: \n"
@@ -519,6 +519,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Canale EXTINT già in uso"
@@ -549,6 +550,10 @@ msgstr "Atteso un %q"
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -940,6 +945,10 @@ msgstr "Nessun GCLK libero"
 msgid "No hardware random available"
 msgstr "Nessun generatore hardware di numeri casuali disponibile"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1033,6 +1042,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr "Imposssibile rimontare il filesystem"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2208,7 +2221,7 @@ msgstr "l'oggetto non è un iteratore"
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "oggetto non in sequenza"
 

locale/pl.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2019-03-19 18:37-0700\n"
 "Last-Translator: Radomir Dopieralski <circuitpython@sheep.art.pl>\n"
 "Language-Team: pl\n"
@@ -509,6 +509,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Tryb sterowania nieużywany w trybie wejścia."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Kanał EXTINT w użyciu"
@@ -537,6 +538,10 @@ msgstr "Oczekiwano UUID"
 msgid "Expected tuple of length %d, got %d"
 msgstr "Oczekiwano krotkę długości %d, otrzymano %d"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr "Nie udało się uzyskać blokady"
@@ -917,6 +922,10 @@ msgstr "Brak wolnych GLCK"
 msgid "No hardware random available"
 msgstr "Brak generatora liczb losowych"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -999,6 +1008,10 @@ msgstr "Piksel poza granicami bufora"
 msgid "Plus any modules on the filesystem\n"
 msgstr "Oraz moduły w systemie plików\n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr "Dowolny klawisz aby uruchomić konsolę. CTRL-D aby przeładować."
@@ -2156,7 +2169,7 @@ msgstr "obiekt nie jest iteratorem"
 msgid "object not callable"
 msgstr "obiekt nie jest wywoływalny"
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "obiektu nie ma sekwencji"
 

locale/pt_BR.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2018-10-02 21:14-0000\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -514,6 +514,7 @@ msgid "Drive mode not used when direction is input."
 msgstr ""
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "Canal EXTINT em uso"
@@ -544,6 +545,10 @@ msgstr "Esperado um"
 msgid "Expected tuple of length %d, got %d"
 msgstr ""
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr "Falha ao enviar comando."
+
 #: ports/nrf/common-hal/bleio/Device.c
 #, fuzzy
 msgid "Failed to acquire mutex"
@@ -930,6 +935,10 @@ msgstr "Não há GCLKs livre"
 msgid "No hardware random available"
 msgstr ""
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr "Sem suporte de hardware no pino de clock"
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1016,6 +1025,10 @@ msgstr ""
 msgid "Plus any modules on the filesystem\n"
 msgstr "Não é possível remontar o sistema de arquivos"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr "Buffer Ps2 vazio"
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr ""
@@ -2165,7 +2178,7 @@ msgstr ""
 msgid "object not callable"
 msgstr ""
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "objeto não em seqüência"
 

locale/zh_Latn_pinyin.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: circuitpython-cn\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-05-13 17:34-0700\n"
+"POT-Creation-Date: 2019-05-22 15:56-0300\n"
 "PO-Revision-Date: 2019-04-13 10:10-0700\n"
 "Last-Translator: hexthat\n"
 "Language-Team: Chinese Hanyu Pinyin\n"
@@ -510,6 +510,7 @@ msgid "Drive mode not used when direction is input."
 msgstr "Fāngxiàng shūrù shí qūdòng móshì méiyǒu shǐyòng."
 
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "EXTINT channel already in use"
 msgstr "EXTINT píndào yǐjīng shǐyòng"
@@ -538,6 +539,10 @@ msgstr "Yùqí UUID"
 msgid "Expected tuple of length %d, got %d"
 msgstr "Qīwàng de chángdù wèi %d de yuán zǔ, dédào %d"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Failed sending command."
+msgstr ""
+
 #: ports/nrf/common-hal/bleio/Device.c
 msgid "Failed to acquire mutex"
 msgstr "Wúfǎ huòdé mutex"
@@ -917,6 +922,10 @@ msgstr "Méiyǒu miǎnfèi de GCLKs"
 msgid "No hardware random available"
 msgstr "Méiyǒu kěyòng de yìngjiàn suíjī"
 
+#: ports/atmel-samd/common-hal/ps2io/Ps2.c
+msgid "No hardware support on clk pin"
+msgstr ""
+
 #: ports/atmel-samd/common-hal/frequencyio/FrequencyIn.c
 #: ports/atmel-samd/common-hal/pulseio/PulseIn.c
 msgid "No hardware support on pin"
@@ -1004,6 +1013,10 @@ msgstr "Xiàngsù chāochū huǎnchōng qū biānjiè"
 msgid "Plus any modules on the filesystem\n"
 msgstr "Zài wénjiàn xìtǒng shàng tiānjiā rènhé mókuài\n"
 
+#: shared-bindings/ps2io/Ps2.c
+msgid "Pop from an empty Ps2 buffer"
+msgstr ""
+
 #: main.c
 msgid "Press any key to enter the REPL. Use CTRL-D to reload."
 msgstr "Àn xià rènhé jiàn jìnrù REPL. Shǐyòng CTRL-D chóngxīn jiāzài."
@@ -2168,7 +2181,7 @@ msgstr "duìxiàng bùshì diédài qì"
 msgid "object not callable"
 msgstr "duìxiàng wúfǎ diàoyòng"
 
-#: py/sequence.c
+#: py/sequence.c shared-bindings/displayio/Group.c
 msgid "object not in sequence"
 msgstr "duìxiàng bùshì xùliè"
 

ports/atmel-samd/boards/cp32-m4/mpconfigboard.mk

@@ -15,3 +15,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CHIP_VARIANT = SAMD51J20A
 CHIP_FAMILY = samd51
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/datalore_ip_m4/mpconfigboard.mk

@@ -18,3 +18,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CIRCUITPY_NETWORK = 1
 MICROPY_PY_WIZNET5K = 5500
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/feather_m4_express/mpconfigboard.mk

@@ -18,3 +18,5 @@ CHIP_FAMILY = samd51
 
 CIRCUITPY_NETWORK = 1
 MICROPY_PY_WIZNET5K = 5500
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.mk

@@ -15,3 +15,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CHIP_VARIANT = SAMD51P20A
 CHIP_FAMILY = samd51
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.mk

@@ -16,3 +16,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CHIP_VARIANT = SAMD51G19A
 CHIP_FAMILY = samd51
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/metro_m4_airlift_lite/mpconfigboard.mk

@@ -18,3 +18,5 @@ CHIP_FAMILY = samd51
 
 CIRCUITPY_NETWORK = 1
 MICROPY_PY_WIZNET5K = 5500
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/metro_m4_express/mpconfigboard.mk

@@ -18,3 +18,5 @@ CHIP_FAMILY = samd51
 
 CIRCUITPY_NETWORK = 1
 MICROPY_PY_WIZNET5K = 5500
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/mini_sam_m4/mpconfigboard.mk

@@ -17,3 +17,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CHIP_VARIANT = SAMD51G19A
 CHIP_FAMILY = samd51
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/boards/trellis_m4_express/mpconfigboard.mk

@@ -16,3 +16,5 @@ CIRCUITPY_TOUCHIO = 0
 
 CHIP_VARIANT = SAMD51G19A
 CHIP_FAMILY = samd51
+
+CIRCUITPY_PS2IO = 1

ports/atmel-samd/common-hal/ps2io/Ps2.c

@@ -0,0 +1,441 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017-2018 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "common-hal/ps2io/Ps2.h"
+
+#include <stdint.h>
+
+#include "atmel_start_pins.h"
+#include "hal/include/hal_gpio.h"
+
+#include "background.h"
+#include "eic_handler.h"
+#include "mpconfigport.h"
+#include "py/gc.h"
+#include "py/runtime.h"
+#include "samd/external_interrupts.h"
+#include "samd/pins.h"
+#include "shared-bindings/microcontroller/__init__.h"
+#include "shared-bindings/ps2io/Ps2.h"
+#include "supervisor/shared/translate.h"
+
+#include "tick.h"
+
+#define STATE_IDLE 0
+#define STATE_RECV 1
+#define STATE_RECV_PARITY 2
+#define STATE_RECV_STOP 3
+#define STATE_RECV_ERR 10
+
+#define ERROR_STARTBIT 0x01
+#define ERROR_TIMEOUT 0x02
+#define ERROR_PARITY 0x04
+#define ERROR_STOPBIT 0x08
+#define ERROR_BUFFER 0x10
+
+#define ERROR_TX_CLKLO 0x100
+#define ERROR_TX_CLKHI 0x200
+#define ERROR_TX_ACKDATA 0x400
+#define ERROR_TX_ACKCLK 0x800
+#define ERROR_TX_RTS 0x1000
+#define ERROR_TX_NORESP 0x2000
+
+static void ps2_set_config(ps2io_ps2_obj_t* self) {
+    uint32_t sense_setting = EIC_CONFIG_SENSE0_FALL_Val;
+    set_eic_handler(self->channel, EIC_HANDLER_PS2);
+    turn_on_eic_channel(self->channel, sense_setting);
+}
+
+static void disable_interrupt(ps2io_ps2_obj_t* self) {
+    uint32_t mask = 1 << self->channel;
+    EIC->INTENCLR.reg = mask << EIC_INTENSET_EXTINT_Pos;
+}
+
+static void resume_interrupt(ps2io_ps2_obj_t* self) {
+    disable_interrupt(self);
+
+    self->state = STATE_IDLE;
+    gpio_set_pin_function(self->clk_pin, GPIO_PIN_FUNCTION_A);
+    uint32_t mask = 1 << self->channel;
+    EIC->INTFLAG.reg = mask << EIC_INTFLAG_EXTINT_Pos;
+    EIC->INTENSET.reg = mask << EIC_INTENSET_EXTINT_Pos;
+
+    ps2_set_config(self);
+}
+
+static void clk_hi(ps2io_ps2_obj_t* self) {
+    // External pull-up
+    // Must set pull after setting direction.
+    gpio_set_pin_direction(self->clk_pin, GPIO_DIRECTION_IN);
+    gpio_set_pin_pull_mode(self->clk_pin, GPIO_PULL_OFF);
+}
+
+static bool wait_clk_lo(ps2io_ps2_obj_t* self, uint32_t us) {
+    clk_hi(self);
+    common_hal_mcu_delay_us(1);
+    while (gpio_get_pin_level(self->clk_pin) && us) {
+        --us;
+        common_hal_mcu_delay_us(1);
+    }
+    return us;
+}
+
+static bool wait_clk_hi(ps2io_ps2_obj_t* self, uint32_t us) {
+    clk_hi(self);
+    common_hal_mcu_delay_us(1);
+    while (!gpio_get_pin_level(self->clk_pin) && us) {
+        --us;
+        common_hal_mcu_delay_us(1);
+    }
+    return us;
+}
+
+static void clk_lo(ps2io_ps2_obj_t* self) {
+    gpio_set_pin_pull_mode(self->clk_pin, GPIO_PULL_OFF);
+    gpio_set_pin_direction(self->clk_pin, GPIO_DIRECTION_OUT);
+    gpio_set_pin_level(self->clk_pin, 0);
+}
+
+static void data_hi(ps2io_ps2_obj_t* self) {
+    // External pull-up
+    gpio_set_pin_direction(self->data_pin, GPIO_DIRECTION_IN);
+    gpio_set_pin_pull_mode(self->data_pin, GPIO_PULL_OFF);
+}
+
+static bool wait_data_lo(ps2io_ps2_obj_t* self, uint32_t us) {
+    data_hi(self);
+    common_hal_mcu_delay_us(1);
+    while (gpio_get_pin_level(self->data_pin) && us) {
+        --us;
+        common_hal_mcu_delay_us(1);
+    }
+    return us;
+}
+
+static bool wait_data_hi(ps2io_ps2_obj_t* self, uint32_t us) {
+    data_hi(self);
+    common_hal_mcu_delay_us(1);
+    while (!gpio_get_pin_level(self->data_pin) && us) {
+        --us;
+        common_hal_mcu_delay_us(1);
+    }
+    return us;
+}
+
+static void data_lo(ps2io_ps2_obj_t* self) {
+    gpio_set_pin_pull_mode(self->data_pin, GPIO_PULL_OFF);
+    gpio_set_pin_direction(self->data_pin, GPIO_DIRECTION_OUT);
+    gpio_set_pin_level(self->data_pin, 0);
+}
+
+static void idle(ps2io_ps2_obj_t* self) {
+    clk_hi(self);
+    data_hi(self);
+}
+
+static void inhibit(ps2io_ps2_obj_t* self) {
+    clk_lo(self);
+    data_hi(self);
+}
+
+static void delay_us(uint32_t t) {
+    common_hal_mcu_delay_us(t);
+}
+
+void ps2_interrupt_handler(uint8_t channel) {
+    // Grab the current time first.
+    uint32_t current_us;
+    uint64_t current_ms;
+    current_tick(&current_ms, &current_us);
+
+    ps2io_ps2_obj_t* self = get_eic_channel_data(channel);
+    int data_bit = gpio_get_pin_level(self->data_pin) ? 1 : 0;
+
+    // test for timeout
+    if (self->state != STATE_IDLE) {
+        int64_t diff_ms = current_ms - self->last_int_ms;
+        if (diff_ms >= 2) { // a.k.a. > 1.001ms
+            self->last_errors |= ERROR_TIMEOUT;
+            self->state = STATE_IDLE;
+        }
+    }
+
+    self->last_int_us = current_us;
+    self->last_int_ms = current_ms;
+
+    if (self->state == STATE_IDLE) {
+        self->bits = 0;
+        self->parity = false;
+        self->bitcount = 0;
+        self->state = STATE_RECV;
+        if (data_bit) {
+            // start bit should be 0
+            self->last_errors |= ERROR_STARTBIT;
+            self->state = STATE_RECV_ERR;
+                } else {
+            self->state = STATE_RECV;
+        }
+
+    } else if (self->state == STATE_RECV) {
+        if (data_bit) {
+            self->bits |= data_bit << self->bitcount;
+            self->parity = !self->parity;
+        }
+        ++self->bitcount;
+        if (self->bitcount >= 8) {
+            self->state = STATE_RECV_PARITY;
+        }
+
+    } else if (self->state == STATE_RECV_PARITY) {
+        ++self->bitcount;
+        if (data_bit) {
+            self->parity = !self->parity;
+        }
+        if (!self->parity) {
+            self->last_errors |= ERROR_PARITY;
+            self->state = STATE_RECV_ERR;
+        } else {
+            self->state = STATE_RECV_STOP;
+        }
+
+    } else if (self->state == STATE_RECV_STOP) {
+        ++self->bitcount;
+        if (! data_bit) {
+            self->last_errors |= ERROR_STOPBIT;
+        } else if (self->waiting_cmd_response) {
+            self->cmd_response = self->bits;
+            self->waiting_cmd_response = false;
+        } else if (self->bufcount >= sizeof(self->buffer)) {
+            self->last_errors |= ERROR_BUFFER;
+        } else {
+            self->buffer[self->bufposw] = self->bits;
+            self->bufposw = (self->bufposw + 1) % sizeof(self->buffer);
+            self->bufcount++;
+        }
+        self->state = STATE_IDLE;
+
+    } else if (self->state == STATE_RECV_ERR) {
+        // just count the bits until idle
+        if (++self->bitcount >= 10) {
+            self->state = STATE_IDLE;
+        }
+    }
+}
+
+void common_hal_ps2io_ps2_construct(ps2io_ps2_obj_t* self,
+        const mcu_pin_obj_t* data_pin, const mcu_pin_obj_t* clk_pin) {
+    if (!clk_pin->has_extint) {
+        mp_raise_RuntimeError(translate("No hardware support on clk pin"));
+    }
+    if (eic_get_enable() && !eic_channel_free(clk_pin->extint_channel)) {
+        mp_raise_RuntimeError(translate("EXTINT channel already in use"));
+    }
+
+    clk_hi(self);
+    data_hi(self);
+
+    self->channel = clk_pin->extint_channel;
+    self->clk_pin = clk_pin->number;
+    self->data_pin = data_pin->number;
+    self->state = STATE_IDLE;
+    self->bufcount = 0;
+    self->bufposr = 0;
+    self->bufposw = 0;
+    self->waiting_cmd_response = false;
+
+    set_eic_channel_data(clk_pin->extint_channel, (void*) self);
+
+    // Check to see if the EIC is enabled and start it up if its not.'
+    if (eic_get_enable() == 0) {
+        turn_on_external_interrupt_controller();
+    }
+
+    gpio_set_pin_function(clk_pin->number, GPIO_PIN_FUNCTION_A);
+    gpio_set_pin_function(data_pin->number, GPIO_PIN_FUNCTION_A);
+
+    turn_on_cpu_interrupt(self->channel);
+
+    claim_pin(clk_pin);
+    claim_pin(data_pin);
+
+    // Set config will enable the EIC.
+    ps2_set_config(self);
+}
+
+bool common_hal_ps2io_ps2_deinited(ps2io_ps2_obj_t* self) {
+    return self->clk_pin == NO_PIN;
+}
+
+void common_hal_ps2io_ps2_deinit(ps2io_ps2_obj_t* self) {
+    if (common_hal_ps2io_ps2_deinited(self)) {
+        return;
+    }
+    set_eic_handler(self->channel, EIC_HANDLER_NO_INTERRUPT);
+    turn_off_eic_channel(self->channel);
+    reset_pin_number(self->clk_pin);
+    reset_pin_number(self->data_pin);
+    self->clk_pin = NO_PIN;
+    self->data_pin = NO_PIN;
+}
+
+uint16_t common_hal_ps2io_ps2_get_len(ps2io_ps2_obj_t* self) {
+    return self->bufcount;
+}
+
+bool common_hal_ps2io_ps2_get_paused(ps2io_ps2_obj_t* self) {
+    uint32_t mask = 1 << self->channel;
+    return (EIC->INTENSET.reg & (mask << EIC_INTENSET_EXTINT_Pos)) == 0;
+}
+
+int16_t common_hal_ps2io_ps2_popleft(ps2io_ps2_obj_t* self)
+{
+    common_hal_mcu_disable_interrupts();
+    if (self->bufcount <= 0) {
+        common_hal_mcu_enable_interrupts();
+        return -1;
+    }
+    uint8_t b = self->buffer[self->bufposr];
+    self->bufposr = (self->bufposr + 1) % sizeof(self->buffer);
+    self->bufcount -= 1;
+    common_hal_mcu_enable_interrupts();
+    return b;
+}
+
+uint16_t common_hal_ps2io_ps2_clear_errors(ps2io_ps2_obj_t* self)
+{
+    common_hal_mcu_disable_interrupts();
+    uint16_t errors = self->last_errors;
+    self->last_errors = 0;
+    common_hal_mcu_enable_interrupts();
+    return errors;
+}
+
+// Based upon TMK implementation of PS/2 protocol
+// https://github.com/tmk/tmk_keyboard/blob/master/tmk_core/protocol/ps2_interrupt.c
+
+int16_t common_hal_ps2io_ps2_sendcmd(ps2io_ps2_obj_t* self, uint8_t b)
+{
+    disable_interrupt(self);
+    inhibit(self);
+    delay_us(100);
+
+    /* RTS and start bit */
+    data_lo(self);
+    clk_hi(self);
+    if (!wait_clk_lo(self, 10000)) {
+        self->last_errors |= ERROR_TX_RTS;
+        goto ERROR;
+    }
+
+    bool parity = true;
+    for (uint8_t i = 0; i < 8; i++) {
+        delay_us(15);
+        if (b & (1 << i)) {
+            parity = !parity;
+            data_hi(self);
+        } else {
+            data_lo(self);
+        }
+        if (!wait_clk_hi(self, 50)) {
+            self->last_errors |= ERROR_TX_CLKHI;
+            goto ERROR;
+        }
+        if (!wait_clk_lo(self, 50)) {
+            self->last_errors |= ERROR_TX_CLKLO;
+            goto ERROR;
+        }
+    }
+
+    delay_us(15);
+    if (parity) {
+        data_hi(self);
+    } else {
+        data_lo(self);
+    }
+    if (!wait_clk_hi(self, 50)) {
+        self->last_errors |= ERROR_TX_CLKHI;
+        goto ERROR;
+    }
+    if (!wait_clk_lo(self, 50)) {
+        self->last_errors |= ERROR_TX_CLKLO;
+        goto ERROR;
+    }
+
+    /* Stop bit */
+    delay_us(15);
+    data_hi(self);
+
+    /* Ack */
+    if (!wait_data_lo(self, 50)) {
+        self->last_errors |= ERROR_TX_ACKDATA;
+        goto ERROR;
+    }
+    if (!wait_clk_lo(self, 50)) {
+        self->last_errors |= ERROR_TX_ACKCLK;
+        goto ERROR;
+    }
+
+    /* wait for idle state */
+    if (!wait_clk_hi(self, 50)) {
+        self->last_errors |= ERROR_TX_ACKCLK;
+        goto ERROR;
+    }
+    if (!wait_data_hi(self, 50)) {
+        self->last_errors |= ERROR_TX_ACKDATA;
+        goto ERROR;
+    }
+
+    /* Wait for response byte */
+    self->waiting_cmd_response = true;
+    idle(self);
+    resume_interrupt(self);
+
+    for (int i = 0; i < 25; ++i) {
+        delay_us(1000);
+        common_hal_mcu_disable_interrupts();
+        bool has_response = !self->waiting_cmd_response;
+        uint8_t response = self->cmd_response;
+        common_hal_mcu_enable_interrupts();
+
+        if (has_response) {
+            return response;
+        }
+    }
+
+    /* No response */
+    common_hal_mcu_disable_interrupts();
+    self->waiting_cmd_response = false;
+    self->last_errors |= ERROR_TX_NORESP;
+    common_hal_mcu_enable_interrupts();
+    return -1;
+
+    /* Other errors */
+ERROR:
+    idle(self);
+    resume_interrupt(self);
+    return -1;
+}

ports/atmel-samd/common-hal/ps2io/Ps2.h

@@ -0,0 +1,62 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_PS2IO_PS2_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_PS2IO_PS2_H
+
+#include "common-hal/microcontroller/Pin.h"
+
+#include "py/obj.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    uint8_t channel;
+    uint8_t clk_pin;
+    uint8_t data_pin;
+
+    uint8_t state;
+    uint64_t last_int_ms;
+    uint32_t last_int_us;
+
+    uint16_t bits;
+    bool parity;
+    uint8_t bitcount;
+
+    uint8_t buffer[16];
+    uint8_t bufcount;
+    uint8_t bufposr;
+    uint8_t bufposw;
+
+    uint16_t last_errors;
+
+    bool waiting_cmd_response;
+    uint8_t cmd_response;
+} ps2io_ps2_obj_t;
+
+void ps2_interrupt_handler(uint8_t channel);
+
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_PS2IO_PS2_H

ports/atmel-samd/common-hal/ps2io/__init__.c

@@ -0,0 +1 @@
+// No ps2io module functions.

ports/atmel-samd/eic_handler.c

@@ -25,6 +25,7 @@
  */
 
 #include "common-hal/pulseio/PulseIn.h"
+#include "common-hal/ps2io/Ps2.h"
 #include "common-hal/rotaryio/IncrementalEncoder.h"
 #include "shared-bindings/microcontroller/__init__.h"
 //#include "samd/external_interrupts.h"
@@ -46,6 +47,12 @@ void shared_eic_handler(uint8_t channel) {
         break;
 #endif
 
+#if CIRCUITPY_PS2IO
+    case EIC_HANDLER_PS2:
+        ps2_interrupt_handler(channel);
+        break;
+#endif
+
 #if CIRCUITPY_ROTARYIO
     case EIC_HANDLER_INCREMENTAL_ENCODER:
         incrementalencoder_interrupt_handler(channel);

ports/atmel-samd/eic_handler.h

@@ -29,6 +29,7 @@
 #define EIC_HANDLER_NO_INTERRUPT 0x0
 #define EIC_HANDLER_PULSEIN 0x1
 #define EIC_HANDLER_INCREMENTAL_ENCODER 0x2
+#define EIC_HANDLER_PS2 0x3
 
 void set_eic_handler(uint8_t channel, uint8_t eic_handler);
 void shared_eic_handler(uint8_t channel);

ports/atmel-samd/supervisor/port.c

@@ -52,6 +52,7 @@
 #include "common-hal/pulseio/PulseIn.h"
 #include "common-hal/pulseio/PulseOut.h"
 #include "common-hal/pulseio/PWMOut.h"
+#include "common-hal/ps2io/Ps2.h"
 #include "common-hal/rtc/RTC.h"
 #include "common-hal/touchio/TouchIn.h"
 #include "samd/cache.h"

ports/atmel-samd/tools/gen_pin_name_table.py

@@ -156,6 +156,9 @@ capabilities = {
                    "PA14", "PA15", "PA16", "PA17", "PA18", "PA19", "PA20",
                    "PA21", "PA22", "PA23", "PA30", "PA31"]
     },
+    "ps2io": {
+        "Ps2": ALL_BUT_USB,
+    },
     "touchio": {
         "TouchIn": ["PA02", "PA03", "PB08", "PB09", "PA04", "PA05", "PA06",
                     "PA07", "PB02", "PB03"]

py/circuitpy_defns.mk

@@ -162,6 +162,9 @@ endif
 ifeq ($(CIRCUITPY_PULSEIO),1)
 SRC_PATTERNS += pulseio/%
 endif
+ifeq ($(CIRCUITPY_PS2IO),1)
+SRC_PATTERNS += ps2io/%
+endif
 ifeq ($(CIRCUITPY_RANDOM),1)
 SRC_PATTERNS += random/%
 endif
@@ -252,6 +255,8 @@ $(filter $(SRC_PATTERNS), \
 	pulseio/PulseIn.c \
 	pulseio/PulseOut.c \
 	pulseio/__init__.c \
+	ps2io/Ps2.c \
+	ps2io/__init__.c \
 	rotaryio/IncrementalEncoder.c \
 	rotaryio/__init__.c \
 	rtc/RTC.c \

py/circuitpy_mpconfig.h

@@ -416,6 +416,13 @@ extern const struct _mp_obj_module_t pulseio_module;
 #define PULSEIO_MODULE
 #endif
 
+#if CIRCUITPY_PS2IO
+extern const struct _mp_obj_module_t ps2io_module;
+#define PS2IO_MODULE         { MP_OBJ_NEW_QSTR(MP_QSTR_ps2io), (mp_obj_t)&ps2io_module },
+#else
+#define PS2IO_MODULE
+#endif
+
 #if CIRCUITPY_RANDOM
 extern const struct _mp_obj_module_t random_module;
 #define RANDOM_MODULE          { MP_OBJ_NEW_QSTR(MP_QSTR_random), (mp_obj_t)&random_module },
@@ -580,6 +587,7 @@ extern const struct _mp_obj_module_t ustack_module;
     PEW_MODULE \
     PIXELBUF_MODULE \
     PULSEIO_MODULE \
+    PS2IO_MODULE \
     RANDOM_MODULE \
     RE_MODULE \
     ROTARYIO_MODULE \

py/circuitpy_mpconfig.mk

@@ -153,6 +153,12 @@ CIRCUITPY_PULSEIO = 1
 endif
 CFLAGS += -DCIRCUITPY_PULSEIO=$(CIRCUITPY_PULSEIO)
 
+# Only for SAMD boards for the moment
+ifndef CIRCUITPY_PS2IO
+CIRCUITPY_PS2IO = 0
+endif
+CFLAGS += -DCIRCUITPY_PS2IO=$(CIRCUITPY_PS2IO)
+
 ifndef CIRCUITPY_RANDOM
 CIRCUITPY_RANDOM = 1
 endif

shared-bindings/index.rst

@@ -53,6 +53,7 @@ Module             Supported Ports
 `nvm`              **SAMD Express**
 `os`               **All Supported**
 `pulseio`          **SAMD/SAMD Express**
+`ps2io`            **SAMD/SAMD Express**
 `random`           **All Supported**
 `rotaryio`         **SAMD51, SAMD Express**
 `storage`          **All Supported**

shared-bindings/ps2io/Ps2.c

@@ -0,0 +1,237 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+
+#include "lib/utils/context_manager_helpers.h"
+#include "py/objproperty.h"
+#include "py/runtime.h"
+#include "py/runtime0.h"
+#include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/ps2io/Ps2.h"
+#include "shared-bindings/util.h"
+#include "supervisor/shared/translate.h"
+
+//| .. currentmodule:: ps2io
+//|
+//| :class:`Ps2` -- Communicate with a PS/2 keyboard or mouse
+//| =========================================================
+//|
+//| Ps2 implements the PS/2 keyboard/mouse serial protocol, used in
+//| legacy devices. It is similar to UART but there are only two
+//| lines (Data and Clock). PS/2 devices are 5V, so bidirectional
+//| level converters must be used to connect the I/O lines to pins
+//| of 3.3V boards.
+//|
+//| .. class:: Ps2(data_pin, clock_pin)
+//|
+//|   Create a Ps2 object associated with the given pins.
+//|
+//|   :param ~microcontroller.Pin data_pin: Pin tied to data wire.
+//|   :param ~microcontroller.Pin clock_pin: Pin tied to clock wire.
+//|     This pin must support interrupts.
+//|
+//|   Read one byte from PS/2 keyboard and turn on Scroll Lock LED::
+//|
+//|     import ps2io
+//|     import board
+//|
+//|     kbd = ps2io.Ps2(board.D10, board.D11)
+//|
+//|     while len(kbd) == 0:
+//|         pass
+//|
+//|     print(kbd.popleft())
+//|     print(kbd.sendcmd(0xed))
+//|     print(kbd.sendcmd(0x01))
+//|
+STATIC mp_obj_t ps2io_ps2_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+    enum { ARG_datapin, ARG_clkpin };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_datapin, MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_clkpin, MP_ARG_REQUIRED | MP_ARG_OBJ },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+    assert_pin(args[ARG_clkpin].u_obj, false);
+    assert_pin(args[ARG_datapin].u_obj, false);
+    const mcu_pin_obj_t* clkpin = MP_OBJ_TO_PTR(args[ARG_clkpin].u_obj);
+    assert_pin_free(clkpin);
+    const mcu_pin_obj_t* datapin = MP_OBJ_TO_PTR(args[ARG_datapin].u_obj);
+    assert_pin_free(datapin);
+
+    ps2io_ps2_obj_t *self = m_new_obj(ps2io_ps2_obj_t);
+    self->base.type = &ps2io_ps2_type;
+
+    common_hal_ps2io_ps2_construct(self, datapin, clkpin);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+//|   .. method:: deinit()
+//|
+//|      Deinitialises the Ps2 and releases any hardware resources for reuse.
+//|
+STATIC mp_obj_t ps2io_ps2_deinit(mp_obj_t self_in) {
+    ps2io_ps2_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    common_hal_ps2io_ps2_deinit(self);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(ps2io_ps2_deinit_obj, ps2io_ps2_deinit);
+
+//|   .. method:: __enter__()
+//|
+//|      No-op used by Context Managers.
+//|
+//  Provided by context manager helper.
+
+//|   .. method:: __exit__()
+//|
+//|      Automatically deinitializes the hardware when exiting a context. See
+//|      :ref:`lifetime-and-contextmanagers` for more info.
+//|
+STATIC mp_obj_t ps2io_ps2_obj___exit__(size_t n_args, const mp_obj_t *args) {
+    (void)n_args;
+    common_hal_ps2io_ps2_deinit(args[0]);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(ps2io_ps2___exit___obj, 4, 4, ps2io_ps2_obj___exit__);
+
+//|   .. method:: popleft()
+//|
+//|     Removes and returns the oldest received byte. When buffer
+//|     is empty, raises an IndexError exception.
+//|
+STATIC mp_obj_t ps2io_ps2_obj_popleft(mp_obj_t self_in) {
+    ps2io_ps2_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    raise_error_if_deinited(common_hal_ps2io_ps2_deinited(self));
+
+    int b = common_hal_ps2io_ps2_popleft(self);
+    if (b < 0) {
+        mp_raise_IndexError(translate("Pop from an empty Ps2 buffer"));
+    }
+    return MP_OBJ_NEW_SMALL_INT(b);
+}
+MP_DEFINE_CONST_FUN_OBJ_1(ps2io_ps2_popleft_obj, ps2io_ps2_obj_popleft);
+
+//|   .. method:: sendcmd(byte)
+//|
+//|     Sends a command byte to PS/2. Returns the response byte, typically
+//|     the general ack value (0xFA). Some commands return additional data
+//|     which is available through :py:func:`popleft()`.
+//|
+//|     Raises a RuntimeError in case of failure. The root cause can be found
+//|     by calling :py:func:`clear_errors()`. It is advisable to call
+//|     :py:func:`clear_errors()` before :py:func:`sendcmd()` to flush any
+//|     previous errors.
+//|
+//|     :param int byte: byte value of the command
+//|
+STATIC mp_obj_t ps2io_ps2_obj_sendcmd(mp_obj_t self_in, mp_obj_t ob) {
+    ps2io_ps2_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    raise_error_if_deinited(common_hal_ps2io_ps2_deinited(self));
+    mp_int_t cmd = mp_obj_get_int(ob) & 0xff;
+    int resp = common_hal_ps2io_ps2_sendcmd(self, cmd);
+    if (resp < 0) {
+        mp_raise_RuntimeError(translate("Failed sending command."));
+    }
+    return MP_OBJ_NEW_SMALL_INT(resp);
+}
+MP_DEFINE_CONST_FUN_OBJ_2(ps2io_ps2_sendcmd_obj, ps2io_ps2_obj_sendcmd);
+
+//|   .. method:: clear_errors()
+//|
+//|     Returns and clears a bitmap with latest recorded communication errors.
+//|
+//|     Reception errors (arise asynchronously, as data is received):
+//|
+//|     0x01: start bit not 0
+//|
+//|     0x02: timeout
+//|
+//|     0x04: parity bit error
+//|
+//|     0x08: stop bit not 1
+//|
+//|     0x10: buffer overflow, newest data discarded
+//|
+//|     Transmission errors (can only arise in the course of sendcmd()):
+//|
+//|     0x100: clock pin didn't go to LO in time
+//|
+//|     0x200: clock pin didn't go to HI in time
+//|
+//|     0x400: data pin didn't ACK
+//|
+//|     0x800: clock pin didn't ACK
+//|
+//|     0x1000: device didn't respond to RTS
+//|
+//|     0x2000: device didn't send a response byte in time
+//|
+STATIC mp_obj_t ps2io_ps2_obj_clear_errors(mp_obj_t self_in) {
+    ps2io_ps2_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    raise_error_if_deinited(common_hal_ps2io_ps2_deinited(self));
+
+    return MP_OBJ_NEW_SMALL_INT(common_hal_ps2io_ps2_clear_errors(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(ps2io_ps2_clear_errors_obj, ps2io_ps2_obj_clear_errors);
+
+//|   .. method:: __len__()
+//|
+//|     Returns the number of received bytes in buffer, available
+//|     to :py:func:`popleft()`.
+//|
+STATIC mp_obj_t ps2_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
+    ps2io_ps2_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    raise_error_if_deinited(common_hal_ps2io_ps2_deinited(self));
+    uint16_t len = common_hal_ps2io_ps2_get_len(self);
+    switch (op) {
+        case MP_UNARY_OP_BOOL: return mp_obj_new_bool(len != 0);
+        case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(len);
+        default: return MP_OBJ_NULL; // op not supported
+    }
+}
+
+STATIC const mp_rom_map_elem_t ps2io_ps2_locals_dict_table[] = {
+    // Methods
+    { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&ps2io_ps2_deinit_obj) },
+    { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
+    { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&ps2io_ps2___exit___obj) },
+    { MP_ROM_QSTR(MP_QSTR_popleft), MP_ROM_PTR(&ps2io_ps2_popleft_obj) },
+    { MP_ROM_QSTR(MP_QSTR_sendcmd), MP_ROM_PTR(&ps2io_ps2_sendcmd_obj) },
+    { MP_ROM_QSTR(MP_QSTR_clear_errors), MP_ROM_PTR(&ps2io_ps2_clear_errors_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(ps2io_ps2_locals_dict, ps2io_ps2_locals_dict_table);
+
+const mp_obj_type_t ps2io_ps2_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_Ps2,
+    .make_new = ps2io_ps2_make_new,
+    .unary_op = ps2_unary_op,
+    .locals_dict = (mp_obj_dict_t*)&ps2io_ps2_locals_dict,
+};

shared-bindings/ps2io/Ps2.h

@@ -0,0 +1,45 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO_PS2_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO_PS2_H
+
+#include "common-hal/microcontroller/Pin.h"
+#include "common-hal/ps2io/Ps2.h"
+
+extern const mp_obj_type_t ps2io_ps2_type;
+
+extern void common_hal_ps2io_ps2_construct(ps2io_ps2_obj_t* self,
+    const mcu_pin_obj_t* data_pin, const mcu_pin_obj_t* clk_pin);
+extern void common_hal_ps2io_ps2_deinit(ps2io_ps2_obj_t* self);
+extern bool common_hal_ps2io_ps2_deinited(ps2io_ps2_obj_t* self);
+extern uint16_t common_hal_ps2io_ps2_get_len(ps2io_ps2_obj_t* self);
+extern int16_t common_hal_ps2io_ps2_popleft(ps2io_ps2_obj_t* self);
+extern int16_t common_hal_ps2io_ps2_sendcmd(ps2io_ps2_obj_t* self, uint8_t b);
+extern uint16_t common_hal_ps2io_ps2_clear_errors(ps2io_ps2_obj_t* self);
+
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO_PS2_H

shared-bindings/ps2io/__init__.c

@@ -0,0 +1,73 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+
+#include "py/obj.h"
+#include "py/runtime.h"
+
+#include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/ps2io/Ps2.h"
+
+//| :mod:`ps2io` --- Support for PS/2 protocol
+//| =====================================================
+//|
+//| .. module:: ps2io
+//|   :synopsis: Support for PS/2 based devices 
+//|   :platform: SAMD21
+//|
+//| The `ps2io` module contains classes to provide PS/2 communication.
+//|
+//| Libraries
+//|
+//| .. toctree::
+//|     :maxdepth: 3
+//|
+//|     Ps2
+//|
+
+//| .. warning:: This module is not available in some SAMD21 builds. See the
+//|   :ref:`module-support-matrix` for more info.
+//|
+
+//| All classes change hardware state and should be deinitialized when they
+//| are no longer needed if the program continues after use. To do so, either
+//| call :py:meth:`!deinit` or use a context manager. See
+//| :ref:`lifetime-and-contextmanagers` for more info.
+//|
+
+STATIC const mp_rom_map_elem_t ps2io_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_ps2io) },
+    { MP_ROM_QSTR(MP_QSTR_Ps2), MP_ROM_PTR(&ps2io_ps2_type) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(ps2io_module_globals, ps2io_module_globals_table);
+
+const mp_obj_module_t ps2io_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&ps2io_module_globals,
+};

shared-bindings/ps2io/__init__.h

@@ -0,0 +1,35 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Scott Shawcroft
+ * Copyright (c) 2019 Elvis Pfutzenreuter <epxx@epxx.co>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO___INIT___H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO___INIT___H
+
+#include "py/obj.h"
+
+// Nothing now.
+
+#endif  // MICROPY_INCLUDED_SHARED_BINDINGS_PS2IO___INIT___H