45 lines
828 B
C++
45 lines
828 B
C++
#pragma once
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#include <Wire.h>
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class Tca9548a {
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public:
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explicit Tca9548a(uint8_t address) : address_(address), activeChannel_(0xFF) {}
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bool begin() {
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Wire.beginTransmission(address_);
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return Wire.endTransmission() == 0;
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}
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bool selectChannel(uint8_t channel) {
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if (channel > 7) {
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return false;
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}
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const uint8_t mask = static_cast<uint8_t>(1u << channel);
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if (mask == activeChannel_) {
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return true;
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}
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Wire.beginTransmission(address_);
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Wire.write(mask);
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if (Wire.endTransmission() != 0) {
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return false;
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}
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activeChannel_ = mask;
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return true;
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}
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void disableAll() {
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Wire.beginTransmission(address_);
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Wire.write(0x00);
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Wire.endTransmission();
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activeChannel_ = 0x00;
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}
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private:
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uint8_t address_;
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uint8_t activeChannel_;
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};
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