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= Using UART on the Raspberry Pi Pico
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:xrefstyle: short
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Send data from the UART1 port to the UART0 port.
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== Other code to try
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[source.python]
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uart0 = UART(0) #opens a UART connection at the default baudrate of 115,200
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uart0.readline() #reads until the CR (\r) and NL (\n) characters then returns the line
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== Wiring information
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See <<uart-wiring-diagram>> for wiring instructions.
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[[uart-wiring-diagram]]
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[pdfwidth=75%]
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.Wiring two of the Pico's ports together. Be sure to wire UART0:TX to UART1:RX and UART0:RX to UART1:TX.
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image::pico_uart_example.png[]
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== List of Files
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A list of files with descriptions of their function;
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uart.py:: The example code.
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Plik binarny nie jest wyświetlany.
Po Szerokość: | Wysokość: | Rozmiar: 148 KiB |
37
uart/uart.py
37
uart/uart.py
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from machine import UART, Pin
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from time import sleep_us
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class myUART(UART):
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def readUntil(self, termination, maxlen=-1, includeTermination=True):
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result = ''
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while maxlen < 0 or len(result) < maxlen:
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if self.any():
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#print("here")
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result += chr(self.read(1)[0])
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#print(result)
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if result.endswith(termination):
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if not includeTermination:
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result = result[:-len(termination)]
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break
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sleep_us(10)
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return result
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uart = myUART(0, baudrate=9600, tx=Pin(0), rx=Pin(1), bits=8, parity=None, stop=1)
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uart.write("AT+GMR\r\n")
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print(uart.readUntil('OK',maxlen=-1, includeTermination=True))
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from machine import UART, Pin
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import time
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uart1 = UART(1, baudrate=9600, tx=Pin(8), rx=Pin(9))
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uart0 = UART(0, baudrate=9600, tx=Pin(0), rx=Pin(1))
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txData = b'hello world\n\r'
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uart1.write(txData)
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time.sleep(0.1)
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rxData = bytes()
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while uart0.any() > 0:
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rxData += uart0.read(1)
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print(rxData.decode('utf-8'))
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