[HW] Platform change to RPI Pico

@@ -8,3 +8,4 @@
 
 ## 일정
 + 2021.05.03: Init(개인 아두이노 코드 git에서 이전)
++ 2021.05.11: Arduino 개발 중단, RaspberryPi Pico로 플랫폼 이전, C++ -> MicroPython
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-from bluetooth import *
-
-socket = BluetoothSocket( RFCOMM )
-socket.connect(("04:A3:16:99:C7:42", 1))
-print("bluetooth connected!")
-
-msg = input("send message : ")
-socket.send(msg)
-
-print("finished")
-socket.close()
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+from bluetooth import *
+import time
+
+client_socket = BluetoothSocket( RFCOMM )
+client_socket.connect(("00:18:91:D8:24:39", 1))
+print("bluetooth connected!")
+
+def _send_data(msg:str):
+    client_socket.send(msg)
+
+def _recv_data():
+    # 소켓에 2초간 받을 수 있는 시간을 준다
+    client_socket.settimeout(2)
+
+    # 데이터 받을 변수
+    data = ''
+
+    try:
+        timeout_start = time.time()
+        timeout = 2
+        while time.time() < timeout_start + timeout:
+            data += client_socket.recv(1024).decode('utf-8')
+    except:
+        print("INFO: DATA RECV TIMEOUT")
+    finally:
+        return data
+
+
+while True:
+    sel_mode = input("SELECT MODE: ")
+
+    if sel_mode == 'W':
+        msg = input("send message : ")
+        _send_data(msg)
+        
+    elif sel_mode == 'WR':
+        msg = input("send message : ")
+        _send_data(msg)
+
+        data = _recv_data()
+        print(f"Received: {data}")
+
+client_socket.close()
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+import uos
+import machine
+import utime
+
+uart0 = machine.UART(0,baudrate=9600)
+
+# --------------------------------------------------- #
+# INTERNAL FUNCTIONS
+# --------------------------------------------------- #
+def _clartBuf(uart=uart0):
+    ''' Clear Buffer
+    '''
+    while uart.any():
+        print(uart.read(1))
+
+# --------------------------------------------------- #
+# FUNCTIONS
+# --------------------------------------------------- #
+def send_data_bt(sdata:str):
+    ''' Send string data using Bluetooth
+    '''
+    _clartBuf()
+    uart0.write(sdata)
+
+
+def recv_data_bt():
+    ''' Receive string data using Bluetooth
+    '''
+    _clartBuf()
+    prvMills = utime.ticks_ms()
+    received_data = ''
+
+    while (utime.ticks_ms()-prvMills)<2000:
+        if uart0.any():
+            single_data = uart0.read(1)
+            received_data += single_data.decode('utf-8')
+    
+    return received_data
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+''' Original code from https://www.raspberrypi.org/forums/viewtopic.php?t=303606
+'''
+import utime
+import rp2 
+from rp2 import PIO, asm_pio
+from machine import Pin
+
+# --------------------------------------------------- #
+# INIT
+# --------------------------------------------------- #
+# For VCC
+dht_pwr = Pin(14, Pin.OUT)
+# For data
+dht_data = Pin(15, Pin.IN, Pin.PULL_UP)
+
+# Power on
+dht_pwr.value(1)
+# Create empty state
+sm=rp2.StateMachine(1)
+# Wait for DHT22 to start up
+utime.sleep(2)
+
+# --------------------------------------------------- #
+# INIT2
+# --------------------------------------------------- #
+@asm_pio(set_init=(PIO.OUT_HIGH),autopush=True, push_thresh=8) #output one byte at a time
+def DHT22():
+    #drive output low for at least 20ms
+    set(pindirs,1)              #set pin to output  
+    set(pins,0)                 #set pin low
+    set(y,31)                   #prepare countdown, y*x*100cycles
+    label ('waity')
+    set(x,31) 
+    label ('waitx')
+    nop() [30] 
+    jmp(x_dec,'waitx')          #decrement x reg every 100 cycles
+    jmp(y_dec,'waity')          #decrement y reg every time x reaches zero
+     
+    #begin reading from device
+    set(pindirs,0)              #set pin to input 
+    wait(1,pin,0)               #check pin is high before starting
+    wait(0,pin,0)
+    wait(1,pin,0)
+    wait(0,pin,0)               #wait for start of data
+
+    #read databit
+    label('readdata')
+    set(x,21)                   #reset x register to count down from 20
+    wait(1,pin,0)               #wait for high signal
+    label('countdown')
+    jmp(pin,'continue')         #if pin still high continue counting
+    #pin is low before countdown is complete - bit '0' detected
+    set(y,0)                 
+    in_(y, 1)                   #shift '0' into the isr
+    jmp('readdata')             #read the next bit
+        
+    label('continue')
+    jmp(x_dec,'countdown')      #decrement x reg and continue counting if x!=0
+    #pin is still high after countdown complete - bit '1' detected 
+    set(y,1)                  
+    in_(y, 1)                   #shift one bit into the isr
+    wait(0,pin,0)               #wait for low signal (next bit) 
+    jmp('readdata')             #read the next bit
+    
+
+# --------------------------------------------------- #
+# FUNCTIONS
+# --------------------------------------------------- #
+def work_dht():
+    data=[]
+    total=0
+    sm.init(DHT22,freq=1600000,set_base=dht_data,in_base=dht_data,jmp_pin=dht_data) 
+    sm.active(1)    
+    for i in range(5):         #data should be 40 bits (5 bytes) long
+        data.append(sm.get())  #read byte
+    
+    #check checksum (lowest 8 bits of the sum of the first 4 bytes)
+    for i in range(4):
+        total=total+data[i]
+    if((total & 255) == data[4]):
+        humidity=((data[0]<<8)  + data[1])/10.0
+        temperature=(((data[2] &0x7f) << 8)  + data[3]) /10.0
+        if (data[2] & 0x80) == 0x80:
+            temperature = -temperature
+        return [humidity, temperature]       
+    else:
+        return False
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+import array, utime
+from machine import Pin
+import rp2
+
+import neopixel
+import dht
+import bluetoooth as bto
+
+# --------------------------------------------------- #
+# INIT
+# --------------------------------------------------- #
+
+
+# --------------------------------------------------- #
+# ENTRYPOINT
+# --------------------------------------------------- #
+def _run():
+    while True:
+        input_data = bto.recv_data_bt()
+        if input_data != '':
+            input_data = input_data.strip()
+            print('INPUT FOUND ', input_data)
+            print(len(input_data))
+            if input_data == 'A':
+                neopixel.work_led(0.2)
+            elif input_data == 'B':
+                dht_data = dht.work_dht()
+                if dht_data == False:
+                    print("ERROR: DHT22 NOT WORKING")
+                else:
+                    print("INFO: HUMI ", dht_data[0])
+                    print("INFO: TEMP ", dht_data[1])
+                    send_string = str(dht_data[0]) + ',' + str(dht_data[1])
+                    print(send_string)
+                    bto.send_data_bt(send_string)
+            else:
+                print('WRONG INPUT')
+
+if __name__ == '__main__':
+    _run()
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+''' Original code from https://core-electronics.com.au/tutorials/how-to-use-ws2812b-rgb-leds-with-raspberry-pi-pico.html
+'''
+import array, utime
+from machine import Pin
+import rp2
+
+# --------------------------------------------------- #
+# INIT
+# --------------------------------------------------- #
+NUM_LEDS = 8
+PIN_NUM = 22
+
+BLACK = (0, 0, 0)
+RED = (255, 0, 0)
+YELLOW = (255, 150, 0)
+GREEN = (0, 255, 0)
+CYAN = (0, 255, 255)
+BLUE = (0, 0, 255)
+PURPLE = (180, 0, 255)
+WHITE = (255, 255, 255)
+COLORS = (BLACK, RED, YELLOW, GREEN, CYAN, BLUE, PURPLE, WHITE, BLACK)
+
+# --------------------------------------------------- #
+# INIT2
+# --------------------------------------------------- #
+@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=24)
+def ws2812():
+    T1 = 2
+    T2 = 5
+    T3 = 3
+    wrap_target()
+    label("bitloop")
+    out(x, 1)               .side(0)    [T3 - 1]
+    jmp(not_x, "do_zero")   .side(1)    [T1 - 1]
+    jmp("bitloop")          .side(1)    [T2 - 1]
+    label("do_zero")
+    nop()                   .side(0)    [T2 - 1]
+    wrap()
+
+# Create the StateMachine with the ws2812 program, outputting on pin
+sm = rp2.StateMachine(0, ws2812, freq=8_000_000, sideset_base=Pin(PIN_NUM))
+# Start the StateMachine, it will wait for data on its FIFO.
+sm.active(1)
+# Display a pattern on the LEDs via an array of LED RGB values.
+ar = array.array("I", [0 for _ in range(NUM_LEDS)])
+
+# --------------------------------------------------- #
+# INTERNAL FUNCTIONS
+# --------------------------------------------------- #
+def _pixels_show(brightness:int = 0.2):
+    dimmer_ar = array.array("I", [0 for _ in range(NUM_LEDS)])
+    for i,c in enumerate(ar):
+        r = int(((c >> 8) & 0xFF) * brightness)
+        g = int(((c >> 16) & 0xFF) * brightness)
+        b = int((c & 0xFF) * brightness)
+        dimmer_ar[i] = (g<<16) + (r<<8) + b
+    sm.put(dimmer_ar, 8)
+    utime.sleep_ms(10)
+
+def _pixels_set(i, color):
+    ar[i] = (color[1]<<16) + (color[0]<<8) + color[2]
+
+def _pixels_fill(color):
+    for i in range(len(ar)):
+        _pixels_set(i, color)
+
+
+# --------------------------------------------------- #
+# FUNCTIONS
+# --------------------------------------------------- #
+def work_led(brightness:int = 0.2):
+    for color in COLORS:
+        _pixels_fill(color)
+        _pixels_show(brightness)
+        utime.sleep(0.4)