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Add RAM.
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a15d4610f7
commit
0537e59486
@ -35,6 +35,9 @@ class RTC {
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switch(selected_) {
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default:
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if(ram_selected()) {
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return ram_[ram_address()];
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}
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return 0xff;
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case 0x00: return bcd(time_date->tm_sec); // Seconds [0-59]
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@ -63,7 +66,8 @@ class RTC {
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}
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private:
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int selected_;
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std::size_t selected_;
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std::array<uint8_t, 50> ram_{};
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uint8_t statusA_ = 0x00;
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uint8_t statusB_ = 0x02;
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@ -71,6 +75,9 @@ class RTC {
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bool is_decimal() const { return statusB_ & 0x04; }
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bool is_24hour() const { return statusB_ & 0x02; }
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bool ram_selected() const { return selected_ >= 0xe && selected_ < 0xe + ram_.size(); }
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std::size_t ram_address() const { return selected_ - 0xe; }
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template <typename IntT>
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uint8_t bcd(IntT input) {
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// If calendar is in binary format, don't convert.
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@ -87,7 +94,11 @@ class RTC {
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void write_register(uint8_t value) {
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switch(selected_) {
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default: break;
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default:
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if(ram_selected()) {
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ram_[ram_address()] = value;
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}
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break;
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case 0x0a: statusA_ = value; break;
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case 0x0b: statusB_ = value; break;
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}
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