forked from M-Labs/zynq-rs
i2c: conservative timing, avoid SCL/SDA races. Closes #83
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@ -150,6 +150,7 @@ impl I2c {
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self.sda_oe(true);
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self.half_period();
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self.scl_oe(true);
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self.half_period();
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// postcondition: SCL and SDA low
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Ok(())
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}
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@ -188,6 +189,7 @@ impl I2c {
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self.scl_oe(false);
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self.half_period();
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self.scl_oe(true);
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self.half_period();
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}
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self.sda_oe(false);
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self.half_period();
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@ -196,6 +198,7 @@ impl I2c {
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// Read ack/nack
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let ack = !self.sda_i();
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self.scl_oe(true);
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self.half_period();
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self.sda_oe(true);
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// postcondition: SCL and SDA low
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