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Diffstat (limited to 'tests/i2c-master/README.md')
| -rw-r--r-- | tests/i2c-master/README.md | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/tests/i2c-master/README.md b/tests/i2c-master/README.md deleted file mode 100644 index 9ebb3c5..0000000 --- a/tests/i2c-master/README.md +++ /dev/null @@ -1,31 +0,0 @@ -i2c master mode tests. - -While many of the disco boards have some form of i2c device onboard, -which would, on the face of it, make testing easy, it's a different -device on each board, and there are boards without it. - -Instead, use a known I2C peripheral on all boards, and require/expect -a known fixed i2c slave device. (Eventually, this will be a soft -controllable i2c slave in the auto test setup ;) - -the "trigger" pin is bounced when each iteration of the test code starts, -allowing synchronization with a sigrok script that helps assure that -results are as expected. - -Debug is via SWO wherever possible, uart (tx only) on less capable cores - -Pinouts: (External PullUps REQUIRED!) - -board SCLK SDA i2cperiph trigger uart -f4-disco PB8 PB9 i2c1 PB13 -l1-disco PB8 PB9 i2c1 PB13 -f072-disco PB8 PB9 i2c1 PB12 PA9! - - -Notes for monitoring with sigrok: -$ sigrok-cli -d fx2lafw -C D0=SDA,D1=SCL,D2=Trig -c samplerate=4Mhz:captureratio=4 --time=150ms -t Trig=r -o cap2.cli.sr -# Then open the .sr file in pulseview. something's wrong with decoding -# directly from the cli! - -# or.... -$ sigrok-cli -d fx2lafw -C D0=SDA,D1=SCL,D2=Trig -c samplerate=4Mhz:captureratio=4 --time=150ms -t Trig=r -P i2c:scl=SCL:sda=SDA |