started conversion of pico code for communication with pc, use of stdin/out instead of input and print

SW/RPi_Pico/main.py

@@ -12,6 +12,21 @@ BRIGHTNESS = 0.2  # Adjust the brightness (0.0 - 1.0)
 
 led_strip = neopixel.NeoPixel(Pin(ws_pin), led_num)
 
+def set_neopixel_brightness(color):
+    r, g, b = color
+    r = int(r * BRIGHTNESS)
+    g = int(g * BRIGHTNESS)
+    b = int(b * BRIGHTNESS)
+    return (r, g, b)
+
+def set_neopixel_color(r,g,b):
+    color = (r,g,b)
+    color = set_neopixel_brightness(color)
+    led_strip.fill(color)
+    led_strip.write()
+
+set_neopixel_color(0,0,0)
+
 # SPI
 spi_dev = SPI(0, baudrate=1000000)
 cs = Pin(17, Pin.OUT)
@@ -20,7 +35,7 @@ cs.on()
 # SENSOR INIT
 pn532 = nfc.PN532(spi_dev,cs)
 ic, ver, rev, support = pn532.get_firmware_version()
-print('Found PN532 with firmware version: {0}.{1}'.format(ver, rev))
+#print('Found PN532 with firmware version: {0}.{1}'.format(ver, rev))
 
 # Configure PN532 to communicate with MiFare cards
 pn532.SAM_configuration()
@@ -38,20 +53,6 @@ def read_nfc(dev, tmot):
         print('Found card with UID:', [hex(i) for i in uid])
         print('Number_id: {}'.format(string_ID))
 
-#set neopixel brightness
-def set_neopixel_brightness(color):
-    r, g, b = color
-    r = int(r * BRIGHTNESS)
-    g = int(g * BRIGHTNESS)
-    b = int(b * BRIGHTNESS)
-    return (r, g, b)
-
-def set_neopixel_color(r,g,b):
-    color = (r,g,b)
-    color = set_neopixel_brightness(color)
-    led_strip.fill(color)
-    led_strip.write()
-
 def loop_neopixel():
     # Display red
     color = (255, 0, 0)  # Red color
@@ -75,7 +76,7 @@ def loop_neopixel():
     time.sleep(1)
 
 def read_nfc_loop():
-    print("Waiting for RFID/NFC card to read!")
+    sys.stdout.write('Waiting for RFID/NFC card to read!\r')
     set_neopixel_color(255,0,0)
     while True:
         # Check if a card is available to read
@@ -84,12 +85,10 @@ def read_nfc_loop():
         if uid is not None:
             break
     
-    print("")
-    print("Found card with UID:", [hex(i) for i in uid])
-    
     set_neopixel_color(255,255,0)
         
-    ntag_string = ''
+    ntag_string = 'Data: '
+    sys.stdout.write('Reading ntag                      \r')
     for page in range(20,40):
         try:
             ntag2xx_page = pn532.ntag2xx_read_block(page)
@@ -98,14 +97,14 @@ def read_nfc_loop():
                 for char in ntag2xx_page:
                     ntag_string += chr(char)
             else:
-                print('Error reading card')
+                sys.stdout.write('Error reading card\r')
                 return 1
         except:
-            print('Error reading card')
+            sys.stdout.write('Error reading card\r')
             return 1
             
     set_neopixel_color(0,255,0)
-    print(ntag_string)
+    sys.stdout.write(ntag_string + '\r')
     time.sleep(3)
     
     return 0
@@ -118,7 +117,7 @@ def write_nfc_loop(data):
     if (length % 4) != 0:
         pages += 1
 
-    print("Waiting for RFID/NFC card to write to!")
+    sys.stdout.write("Waiting for RFID/NFC card to write to!\r")
     set_neopixel_color(255,0,0)
     while True:
         # Check if a card is available to read
@@ -132,12 +131,12 @@ def write_nfc_loop(data):
     
     set_neopixel_color(255,255,0)
     
-    print('Erasing card')
+    sys.stdout.write('Erasing card\r')
     for page in range(20,41):
         content_erase = b'\x00\x00\x00\x00'
         pn532.ntag2xx_write_block(page, content_erase)
         
-    print('Writing card')
+    sys.stdout.write('Writing card\r')
     for page in range(20,20 + pages):
         content_slice = bytearray(4)
         for i in range(0,4):
@@ -149,15 +148,19 @@ def write_nfc_loop(data):
         print(content_slice)
         pn532.ntag2xx_write_block(page, content_slice)
         
-    print('Write done')
+    sys.stdout.write('Write done\r')
     set_neopixel_color(0,255,0)
 
 def loop():
-        rw = input('Read or Write tags? [R/w]')
+    poll_results = poll_obj.poll(1)
+    if poll_results:
+        rw = sys.stdin.readline().strip()
+        sys.stdout.write("received data: " + rw + "\r")
         rw = rw.lower()
         if rw == 'w':
             while True:
-                data = input('ID:')
+                sys.stdout.write('ID: \r')
+                data = sys.stdin.readline().strip()
                 write_nfc_loop(data)
         elif rw == 'r':
             while True:
@@ -166,24 +169,24 @@ def loop():
             while True:
                 read_nfc_loop()
         else:
-            print('Invalid option')
+            sys.stdout.write('Invalid option\r')
 
 poll_obj = select.poll()
 poll_obj.register(sys.stdin, select.POLLIN)
 
 set_neopixel_color(0,0,255)
 
-try:
-    while True:
-        poll_results = poll_obj.poll(1)
-        if poll_results:
-            while True:
-                try:
-                    ret = loop()
-                except:
-                    set_neopixel_color(0,0,255)
-                    break
-        else:
-            continue
-except:
-    set_neopixel_color(0,0,0)
+
+while True:
+    poll_results = poll_obj.poll(1)
+    if poll_results:
+        while True:
+            try:
+                ret = loop()
+            except:
+               set_neopixel_color(0,0,255)
+               break
+    else:
+        continue
+#except:
+#    set_neopixel_color(0,0,0)