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Use SoftWire for Master and Wire for Slave #2

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lpatiny opened this issue Aug 28, 2018 · 1 comment

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lpatiny commented Aug 28, 2018

Some devices are Master I2C one 2 pins as well as Slave I2C on the SDA / SCL pins.

Problem with the official Wire library is that it tends to crash when you hotplug devices or there is some communication problems.

arduino/Arduino#1476

We should systematically use SoftI2CMaster for Master I2C that has the following interesting flags:

I2C_PULLUP = 1 meaning that internal pullups should be used
I2C_CPUFREQ, when changing CPU clock frequency dynamically
I2C_FASTMODE = 1 meaning that the I2C bus allows speeds up to 400 kHz
I2C_SLOWMODE = 1 meaning that the I2C bus will allow only up to 25 kHz
I2C_NOINTERRUPT = 1 in order to prohibit interrupts while

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lpatiny commented Sep 5, 2018

Closed by bff5153

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