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Fix MCP23x17 not disabling pullup after config change (#2855)
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@ -24,6 +24,7 @@ void MCP23X17Base::pin_mode(uint8_t pin, gpio::Flags flags) {
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uint8_t gppu = pin < 8 ? mcp23x17_base::MCP23X17_GPPUA : mcp23x17_base::MCP23X17_GPPUB;
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if (flags == gpio::FLAG_INPUT) {
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this->update_reg(pin, true, iodir);
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this->update_reg(pin, false, gppu);
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} else if (flags == (gpio::FLAG_INPUT | gpio::FLAG_PULLUP)) {
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this->update_reg(pin, true, iodir);
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this->update_reg(pin, true, gppu);
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