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Update Wire.cpp 

Adds a check to verify if the port had been already enabled, and only in that case disables/re-enables the port. This also solves the issue of setClock being called after begin(), but doesn't not enable the port if begin() had not been called yet.
This commit is contained in:
victorpv 2017-09-11 22:49:03 -05:00 committed by GitHub
parent 799f2b3b8a
commit a530b6a3d4
1 changed files with 4 additions and 2 deletions
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6
STM32F1/libraries/Wire/Wire.cpp
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@ -97,8 +97,10 @@ void HardWire::setClock(uint32_t frequencyHz)
dev_flags &= ~I2C_FAST_MODE;// clear FAST_MODE bit
break;
}
i2c_disable(sel_hard);
i2c_master_enable(sel_hard, dev_flags);
if (sel_hard->regs->CR1 & I2C_CR1_PE){
i2c_disable(sel_hard);
i2c_master_enable(sel_hard, dev_flags);
}
}
HardWire Wire(1);