Nathan Yonkee / Mbed OS Seeed_Grove_4_Digit_Display_Clock

fork of seeed studio 4-digit display for st nucleo board

Dependencies:   Data_Clock_Pair Seeed_Chainable_LED Seeed_Four_Digit_Disp Seeed_IR_Temp_Sensor Seeed_Led_Bar

Fork of Seeed_Grove_4_Digit_Display_Clock by Seeed

SeeedLedBar.h

Committer:
tulanthoar
Date:
2017-04-21
Revision:
8:09c844708255
Parent:
7:b16b9733d859
Child:
12:a16d86fac131

File content as of revision 8:09c844708255:

#ifndef SEEED_LED_BAR_H
#define SEEED_LED_BAR_H
#include "mbed.h"

class SeeedLedBar {
  private:
    DigitalOut datPin_;
    DigitalOut clkPin_;
    void pin_delay(int delay_us = 2);
    static const int glbCmdMode_ = 0x00;
    void send_sixtn_bits(int sixtnBits);
    void set_leds(int ledPower[]);
  public:
    SeeedLedBar(PinName dataOut, PinName clockOut);
    void ten_on();
    void ten_off();
    void ten_set(int ledPower[]);
};

SeeedLedBar::SeeedLedBar(PinName dataOut, PinName clockOut) : datPin_(dataOut), clkPin_(clockOut) { }

void SeeedLedBar::pin_delay(int delay_us) {
    wait_us(delay_us);
}

void SeeedLedBar::send_sixtn_bits(int sixtnBits) {
    for (int i = 0; i < 16; i++) {
        pin_delay();
        datPin_ = sixtnBits & 0x8000;
        pin_delay();
        clkPin_ = !clkPin_;
        sixtnBits <<= 1;
    }
}

void SeeedLedBar::set_leds(int ledPower[]) {
    send_sixtn_bits(glbCmdMode_);
    for (int i = 0; i < 10; i++) send_sixtn_bits(ledPower[i]);
    // Two extra empty bits for padding the command to the correct length
    send_sixtn_bits(0x00);
    send_sixtn_bits(0x00);
    pin_delay();
    datPin_ = 0;
    pin_delay();
    for (int i = 0; i < 4; i++) {
        pin_delay();
        datPin_ = 1;
        pin_delay();
        datPin_ = 0;
    }
}

void SeeedLedBar::ten_on() {
    int all_on[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
    set_leds(all_on);
}

void SeeedLedBar::ten_off() {
    int all_off[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
    set_leds(all_off);
}

void SeeedLedBar::ten_set(int ledPower[]) {
    set_leds(ledPower);
}

#endif