09d070aa55
These all require hardware connections, so live in a different directory.
Except for the IRQ_BREAK test of ESP32 devices a single UART with loopback
is sufficient.
General:
SAMD21: Due to the limited flash size only SAMD21 devices with external
flash support uart.irq().
IRQ_BREAK:
ESP32 needs different UART devices for creating and sensing a break.
Lacking a second UART the test is skipped for ESP32S2 and ESP32C3. RP2
does not pass the test reliable at 115200 baud, reason to be found.
Thus the upper limit is set to 57600 Baud.
Coverage:
esp32 pass when different UART devices are used.
rp2 pass up to 57600 baud
IRQ_RX:
SAMD21: Being a slow device it needs data to be sent byte-by-byte at
9600 baud, since the IRQ callback is scheduled delayed and then the
flags do not match any more. The data matches since it is queued in
the FIFO resp. ringbuffer.
CC3200: The test cannot be performed since no calls are accepted in the
IRQ handler like u.read(). Skipped.
Coverage:
cc3200 fail due to major differences in the implementation.
esp32 pass
nrf pass
renesas-ra pass
samd pass see the notes.
stm32 pass
IRQ_RXIDLE:
STM32: With PyBoard the IRQ is called several times, but only once with
the flag IRQ_RXIDLE set.
Coverage:
esp32 pass
mimxrt pass
renesas-ra pass
rp2 pass
samd pass for both SAMD21 and SAMD51
stm32 fail. see notes.
Signed-off-by: Damien George <damien@micropython.org>
Signed-off-by: robert-hh <robert@hammelrath.com>
71 lines
1.7 KiB
Python
71 lines
1.7 KiB
Python
# Test machine.UART.IRQ_RXIDLE firing after a set of characters are 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_RXIDLE
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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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# 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 "mimxrt" in sys.platform:
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uart_id = 1
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tx_pin = None
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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 "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 "rp2" in sys.platform:
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uart_id = 0
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tx_pin = "GPIO0"
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rx_pin = "GPIO1"
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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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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_RXIDLE:", bool(u.irq().flags() & u.IRQ_RXIDLE), "data:", u.read())
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text = "12345678"
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# Test that the IRQ is called for each set of byte received.
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for bits_per_s in (2400, 9600, 115200):
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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_RXIDLE)
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print("write", bits_per_s)
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uart.write(text)
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uart.flush()
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print("ready")
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time.sleep_ms(100)
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print("done")
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