/*
 * 2023/02/27 T.Wanibe
 * 方法論が見つかったので記録に残す
 * 結局dot表示を制御するためには8bitのセグメント制御をするしかなさそう
 * 数字のセグメント情報はTM1637.hに記載があるので対応はできる
 * custom_display()というAPIを用意して対応する。
 * 
 */
#define          TIMER_INTERRUPT_DEBUG          1
#define         _TIMERINTERRUPT_LOGLEVEL_       4
#include        "RPi_Pico_TimerInterrupt.h"
#include        "TM1637.h"
#define         SEG_DP  0x80
#define         ON 1
#define         OFF 0
#define         TIMER0_INTERVAL_MS      1000
int8_t         TimeDisp[] = {0x00, 0x00, 0x00, 0x00};
unsigned char   ClockPoint = 1;
unsigned char   Update;
unsigned char   halfsecond = 0;
unsigned char   second;
unsigned char   minute = 0;
unsigned char   hour = 12;
static int8_t tube_tab[] = {0x3f, 0x06, 0x5b, 0x4f,
                            0x66, 0x6d, 0x7d, 0x07,
                            0x7f, 0x6f, 0x77, 0x7c,
                            0x39, 0x5e, 0x79, 0x71
                           }; //0~9,A,b,C,d,E,F
#define         CLK 18                  //pins definitions for TM1637 and can be changed to other ports
#define         DIO 19
//TM1637Display tm1637(CLK, DIO);
//GyverTM1637     tm1637(CLK, DIO);
TM1637          tm1637(CLK, DIO);
RPI_PICO_Timer  ITimer0(0);
//--------------
void custom_display(uint8_t bit_addr, uint8_t seg_data) {
        tm1637.start();
        tm1637.writeByte( 0x44 );
        tm1637.stop();
        tm1637.start();
        tm1637.writeByte(bit_addr | 0xc0);
        tm1637.writeByte(seg_data);
        tm1637.stop();
        tm1637.start();
        tm1637.writeByte(tm1637.cmd_disp_ctrl);
        tm1637.stop();
}
//--------------
bool TimingISR(struct repeating_timer *t) {
        halfsecond ++;
        Update = ON;
        if (halfsecond == 2) {
                second ++;
                if (second == 60) {
                        minute ++;
                        if (minute == 60) {
                                hour ++;
                                if (hour == 24) {
                                        hour = 0;
                                }
                                minute = 0;
                        }
                        second = 0;
                }
                halfsecond = 0;
        }
        // Serial.println(second);
        ClockPoint = (~ClockPoint) & 0x01;
        return true;
}
//--------------
void TimeUpdate(void) {
        tm1637.point(POINT_OFF);
        TimeDisp[0] = hour / 10;
        TimeDisp[1] = hour % 10;
        TimeDisp[2] = minute / 10;
        TimeDisp[3] = minute % 10;
        if (ClockPoint) {
                custom_display( 0, tube_tab[TimeDisp[0]]);
                custom_display( 1, tube_tab[TimeDisp[1]] | SEG_DP);
                custom_display( 2, tube_tab[TimeDisp[2]]);
                custom_display( 3, tube_tab[TimeDisp[3]]);
        } else {
                custom_display( 0, tube_tab[TimeDisp[0]]);
                custom_display( 1, tube_tab[TimeDisp[1]]);
                custom_display( 2, tube_tab[TimeDisp[2]]);
                custom_display( 3, tube_tab[TimeDisp[3]]);
        }
        Update = OFF;
}
//--------------
void setup() {
        tm1637.set(7);                           //0..7
        tm1637.clearDisplay();
        //Timer1.initialize(500000);//timing for 500ms
        //Timer1.attachInterrupt(TimingISR);//declare the interrupt serve routine:TimingISR
        //マイクロ秒単位の間隔
        if (ITimer0.attachInterruptInterval(TIMER0_INTERVAL_MS * 500, TimingISR)){
                if(Serial){
                        Serial.print(F("Starting ITimer0 OK, millis() = ")); Serial.println(millis());
                }
        }else{
                if(Serial){
                        Serial.println(F("Can't set ITimer0. Select another freq. or timer"));
                }
        }
}
void loop() {
    if (Update == ON) {
        TimeUpdate();
    }
}