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tests/extmod/machine_uart_irq_txidle.py: Simplify the test script.

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Now that no minimal delay time is required for SAMD devices.

Signed-off-by: robert-hh <robert@hammelrath.com>
This commit is contained in:
robert-hh
2024-08-29 12:10:32 +02:00
committed by Damien George
parent 1a6279ba37
commit e23fdb1f77
1 changed files with 2 additions and 10 deletions
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12
tests/extmod/machine_uart_irq_txidle.py
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@@ -16,27 +16,20 @@ if "rp2" in sys.platform:
uart_id = 0
tx_pin = "GPIO0"
rx_pin = "GPIO1"
min_window = 1
elif "samd" in sys.platform and "ItsyBitsy M0" in sys.implementation._machine:
uart_id = 0
tx_pin = "D1"
rx_pin = "D0"
# For SAMD delay_ms has to be used for the trailing window, and the
# mininmal time is 11 ms to allow for scheduling.
min_window = 11
elif "samd" in sys.platform and "ItsyBitsy M4" in sys.implementation._machine:
uart_id = 3
tx_pin = "D1"
rx_pin = "D0"
min_window = 11
elif "mimxrt" in sys.platform:
uart_id = 1
tx_pin = None
min_window = 0
elif "nrf" in sys.platform:
uart_id = 0
tx_pin = None
min_window = 0
else:
print("Please add support for this test on this platform.")
raise SystemExit
@@ -61,12 +54,11 @@ for bits_per_s in (2400, 9600, 115200):
# the test marks a time window close to the expected of the sending
# and the time at which the IRQ should have been fired.
# It is just a rough estimation of 10 characters before and
# 20 characters after the data's end, unless there is a need to
# wait a minimal time, like for SAMD devices.
# 20 characters after the data's end.
bits_per_char = 10 # 1(startbit) + 8(bits) + 1(stopbit) + 0(parity)
start_time_us = (len(text) - 10) * bits_per_char * 1_000_000 // bits_per_s
window_ms = max(min_window, 20 * bits_per_char * 1_000 // bits_per_s + 1)
window_ms = 20 * bits_per_char * 1_000 // bits_per_s + 1
print("write", bits_per_s)
uart.write(text)