79 lines
1.9 KiB
Python
79 lines
1.9 KiB
Python
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# Test machine.UART.IRQ_RX firing for each character received.
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#
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# IMPORTANT: This test requires hardware connections: the UART TX and RX
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# pins must be wired together.
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try:
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from machine import UART
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UART.IRQ_RX
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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import time, sys
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byte_by_byte = False
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# Configure pins based on the target.
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if "esp32" in sys.platform:
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uart_id = 1
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tx_pin = 4
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rx_pin = 5
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elif "pyboard" in sys.platform:
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uart_id = 4
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tx_pin = None # PA0
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rx_pin = None # PA1
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elif "samd" in sys.platform and "ItsyBitsy M0" in sys.implementation._machine:
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uart_id = 0
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tx_pin = "D1"
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rx_pin = "D0"
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byte_by_byte = True
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elif "samd" in sys.platform and "ItsyBitsy M4" in sys.implementation._machine:
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uart_id = 3
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tx_pin = "D1"
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rx_pin = "D0"
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elif "nrf" in sys.platform:
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uart_id = 0
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tx_pin = None
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rx_pin = None
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elif "renesas-ra" in sys.platform:
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uart_id = 9
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tx_pin = None # P602 @ RA6M2
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rx_pin = None # P601 @ RA6M2
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elif "CC3200" in sys.implementation._machine:
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# CC3200 doesn't work because it's too slow and has an allocation error in the handler.
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print("SKIP")
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raise SystemExit
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else:
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print("Please add support for this test on this platform.")
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raise SystemExit
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def irq(u):
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print("IRQ_RX:", bool(u.irq().flags() & u.IRQ_RX), "data:", u.read(1))
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text = "1234"
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# Test that the IRQ is called for each byte received.
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# Use slow baudrates so that the IRQ has time to run.
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for bits_per_s in (2400, 9600):
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if tx_pin is None:
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uart = UART(uart_id, bits_per_s)
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else:
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uart = UART(uart_id, bits_per_s, tx=tx_pin, rx=rx_pin)
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uart.irq(irq, uart.IRQ_RX)
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print("write", bits_per_s)
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if byte_by_byte:
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# slow devices need data to be sent slow
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for c in text:
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uart.write(c)
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uart.flush()
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else:
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uart.write(text)
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uart.flush()
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time.sleep_ms(100)
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print("done")
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