improve

CARDPUTER CircuitPython/full_display_test.py

@@ -0,0 +1,28 @@
+import board
+import terminalio
+from adafruit_display_text import label
+from keyboard import Keyboard
+
+# GUIDE
+# type freely! CTRL+D clears the text.
+# backspace, space, and return function as expected.
+# keys not recognised WILL print "UNKNOWN 0x??", but this is useful for extra key scans
+######
+
+keyb = Keyboard()
+
+text = ""
+text_area = label.Label(terminalio.FONT, text=text)
+text_area.x = 10
+text_area.y = 10
+board.DISPLAY.root_group = text_area
+
+while True:
+    key = keyb.scan()
+    if key == "BACKSP":
+        text = text[:-1]
+    elif key == "CTRLD":
+        text = ""
+    else:
+        text = text+key
+    text_area.text = text

CARDPUTER CircuitPython/keyboard.py

@@ -4,7 +4,7 @@ class Keyboard:
     def __init__(self):
         # the number row starts with 3 and ends with the number, e.g. key number 5 is 0x35
         self.number_row=["0x30","0x31","0x32","0x33","0x34","0x35","0x36","0x37","0x38","0x39"]
-        self.shift_number_row={"0x21":"!","0x40":"@","0x23":"#","0x24":"$","0x25":"%","0x5e":"^","0x26":"&","0x2a":"*","0x28":"(","0x29":")"}
+        self.chars={"0x21":"!","0x40":"@","0x23":"#","0x24":"$","0x25":"%","0x5e":"^","0x26":"&","0x2a":"*","0x28":"(","0x29":")", "0x3f":"?"}
         self.lowercase={
             "0x71":"q", "0x77":"w", "0x65":"e", "0x72":"r", "0x74":"t", "0x79":"y", "0x75":"u", "0x69":"i", "0x6f":"o", "0x70":"p",
             "0x61":"a", "0x73":"s", "0x64":"d", "0x66":"f", "0x67":"g", "0x68":"h", "0x6a":"j", "0x6b":"k", "0x6c":"l",
@@ -15,6 +15,9 @@ class Keyboard:
             "0x41":"A", "0x53":"S", "0x44":"D", "0x46":"F", "0x47":"G", "0x48":"H", "0x4a":"J", "0x4b":"K", "0x4c":"L",
             "0x5a":"Z", "0x58":"X", "0x43":"C", "0x56":"V", "0x42":"B", "0x4e":"N", "0x4d":"M"
         }
+        self.special={
+            "0xa":"\n", "0x8":"BACKSP", "0x20":" ", "0x3b":"UP", "0x2e":"DOWN", "0x2c":"LEFT", "0x2f":"RIGHT", "0x10d":"OPTD", "0x4":"CTRLD", "0x13":"CTRLS"
+        }
 
     def scan(self):
         code=hex(ord(sys.stdin.read(1)))
@@ -23,12 +26,14 @@ class Keyboard:
         key = None
         if code in self.number_row:
             key = str(self.number_row.index(code))
-        elif code in self.shift_number_row:
+        elif code in self.chars:
-            key = self.shift_number_row[code]
+            key = self.chars[code]
         elif code in self.lowercase:
             key = self.lowercase[code]
         elif code in self.uppercase:
             key = self.uppercase[code]
+        elif code in self.special:
+            key = self.special[code]
             
         if key:
             return key