43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
'''
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Simple program sending an incrementing number over two UART channels to a TTL UART to RS485 converter.
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Inspired by and partly based on Waveshare's example code to the 2 Channel RS485 HAT for the Pi Pico.
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Copyright (C) 2024 Benjamin Burkhardt
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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from machine import UART, Pin
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import time
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uart0 = UART(0, baudrate=115200, tx=Pin(0), rx=Pin(1))
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uart1 = UART(1, baudrate=115200, tx=Pin(4), rx=Pin(5))
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print('Starting RS485 simple send...')
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txData = b'Starting RS485 simple send...\r\n'
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uart0.write(txData)
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uart1.write(txData)
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a=0
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time.sleep(0.1)
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while True:
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time.sleep(0.5)
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a=a+1
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uart0.write("{}\r\n".format(a))
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print(f"[CH0]: Sent data: {a}")#shell output
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time.sleep(0.5)
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a=a+1
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uart1.write("{}\r\n".format(a))
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print(f"[CH1]: Sent data: {a}")#shell output
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