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5bafb0bf68
All the existing `machine.UART` tests in extmod and extmod_hardware are converted to use the new `target_wiring` scheme, which removes a lot of duplicated board-specific settings. All the existing boards that were supported by these UART tests now have their own `target_wiring` file. Some configurations are board specific (eg NUCLEO_WB55) and others are port specific. Signed-off-by: Damien George <damien@micropython.org>
49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
# 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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if "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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from target_wiring import uart_loopback_args, uart_loopback_kwargs
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byte_by_byte = "ItsyBitsy M0" in sys.implementation._machine
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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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uart = UART(*uart_loopback_args, baudrate=bits_per_s, **uart_loopback_kwargs)
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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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