WLED/usermods/EleksTube_IPS/ChipSelect.h

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#ifndef CHIP_SELECT_H
#define CHIP_SELECT_H
#include "Hardware.h"
/*
* `digit`s are as defined in Hardware.h, 0 == seconds ones, 5 == hours tens.
*/
class ChipSelect {
private:
uint8_t digits_map;
const uint8_t all_on = 0x3F;
const uint8_t all_off = 0x00;
public:
ChipSelect() : digits_map(all_off) {}
void update() {
// Documented in README.md. Q7 and Q6 are unused. Q5 is Seconds Ones, Q0 is Hours Tens.
// Q7 is the first bit written, Q0 is the last. So we push two dummy bits, then start with
// Seconds Ones and end with Hours Tens.
// CS is Active Low, but digits_map is 1 for enable, 0 for disable. So we bit-wise NOT first.
uint8_t to_shift = (~digits_map) << 2;
digitalWrite(CSSR_LATCH_PIN, LOW);
shiftOut(CSSR_DATA_PIN, CSSR_CLOCK_PIN, LSBFIRST, to_shift);
digitalWrite(CSSR_LATCH_PIN, HIGH);
}
void begin()
{
pinMode(CSSR_LATCH_PIN, OUTPUT);
pinMode(CSSR_DATA_PIN, OUTPUT);
pinMode(CSSR_CLOCK_PIN, OUTPUT);
digitalWrite(CSSR_DATA_PIN, LOW);
digitalWrite(CSSR_CLOCK_PIN, LOW);
digitalWrite(CSSR_LATCH_PIN, LOW);
update();
}
// These speak the indexes defined in Hardware.h.
// So 0 is disabled, 1 is enabled (even though CS is active low, this gets mapped.)
// So bit 0 (LSB), is index 0, is SECONDS_ONES
// Translation to what the 74HC595 uses is done in update()
void setDigitMap(uint8_t map, bool update_=true) { digits_map = map; if (update_) update(); }
uint8_t getDigitMap() { return digits_map; }
// Helper functions
// Sets just the one digit by digit number
void setDigit(uint8_t digit, bool update_=true) { setDigitMap(0x01 << digit, update_); }
void setAll(bool update_=true) { setDigitMap(all_on, update_); }
void clear(bool update_=true) { setDigitMap(all_off, update_); }
void setSecondsOnes() { setDigit(SECONDS_ONES); }
void setSecondsTens() { setDigit(SECONDS_TENS); }
void setMinutesOnes() { setDigit(MINUTES_ONES); }
void setMinutesTens() { setDigit(MINUTES_TENS); }
void setHoursOnes() { setDigit(HOURS_ONES); }
void setHoursTens() { setDigit(HOURS_TENS); }
bool isSecondsOnes() { return ((digits_map & SECONDS_ONES_MAP) > 0); }
bool isSecondsTens() { return ((digits_map & SECONDS_TENS_MAP) > 0); }
bool isMinutesOnes() { return ((digits_map & MINUTES_ONES_MAP) > 0); }
bool isMinutesTens() { return ((digits_map & MINUTES_TENS_MAP) > 0); }
bool isHoursOnes() { return ((digits_map & HOURS_ONES_MAP) > 0); }
bool isHoursTens() { return ((digits_map & HOURS_TENS_MAP) > 0); }
};
#endif // CHIP_SELECT_H