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circuitpython/tests/pyb/i2c_error.py

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tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# test I2C errors, with polling (disabled irqs) and DMA
import pyb
from pyb import I2C
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
if not hasattr(pyb, "Accel"):
print("SKIP")
tests/pyb: Refactor pyboard tests to work on PYBv1, PYBLITEv1 and PYBD.
2019-12-13 00:43:17 -05:00
raise SystemExit
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# init accelerometer
pyb.Accel()
# get I2C bus
stmhal/i2c: Add option to I2C to enable/disable use of DMA transfers. New keyword option in constructor and init() method is "dma=<bool>". DMA is now disabled by default for I2C transfers because it currently does not handle I2C bus errors very well (eg if slave device doesn't ACK or NACK correctly during a transfer).
2016-11-11 01:36:19 -05:00
i2c = I2C(1, I2C.MASTER, dma=True)
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# test polling mem_read
pyb.disable_irq()
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
pyb.enable_irq()
try:
pyb.disable_irq()
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 77, 0x0A) # should fail
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
except OSError as e:
pyb.enable_irq()
print(repr(e))
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# test polling mem_write
pyb.disable_irq()
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
pyb.enable_irq()
try:
pyb.disable_irq()
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 77, 0x0A) # should fail
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
except OSError as e:
pyb.enable_irq()
print(repr(e))
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# test DMA mem_read
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
try:
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 77, 0x0A) # should fail
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
except OSError as e:
print(repr(e))
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_read(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
# test DMA mem_write
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 76, 0x0A) # should succeed
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
try:
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 77, 0x0A) # should fail
tests: For pyboard, add test for I2C error handling and recovery.
2016-01-29 19:06:04 -05:00
except OSError as e:
print(repr(e))
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting.
2020-03-22 22:26:08 -04:00
i2c.mem_write(1, 76, 0x0A) # should succeed