Nathan Yonkee / Mbed OS Nucleo_read_button_interrupt_copy

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Dependencies:   PinDetect Data_Clock_Pair Seeed_Chainable_LED

SeeedChainableLED.h@7:018155c80657, 2017-05-21 (annotated)

Committer:
tulanthoar
Date:
Sun May 21 13:03:32 2017 -0600
Revision:
7:018155c80657
Add classes for chainable LEDs

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tulanthoar 7:018155c80657 1 /**
tulanthoar 7:018155c80657 2 * @file SeeedChainableLED.h
tulanthoar 7:018155c80657 3 * @brief control the chainable LED module from Seeed Studios
tulanthoar 7:018155c80657 4 * @author Nathan Yonkee
tulanthoar 7:018155c80657 5 * @version 1.0
tulanthoar 7:018155c80657 6 * @date 2017-04-20
tulanthoar 7:018155c80657 7 */
tulanthoar 7:018155c80657 8 #ifndef SEEED_CHAINABLE_LED_H
tulanthoar 7:018155c80657 9 #define SEEED_CHAINABLE_LED_H
tulanthoar 7:018155c80657 10 #include "mbed.h"
tulanthoar 7:018155c80657 11 #include "DataClockPair.h"
tulanthoar 7:018155c80657 12
tulanthoar 7:018155c80657 13 class SeeedChainableLED {
tulanthoar 7:018155c80657 14 private:
tulanthoar 7:018155c80657 15 DigitalOut datPin_;
tulanthoar 7:018155c80657 16 DigitalOut clkPin_;
tulanthoar 7:018155c80657 17 void start_cmd();
tulanthoar 7:018155c80657 18 void stop_cmd();
tulanthoar 7:018155c80657 19 void pin_delay(int delay_us = 6);
tulanthoar 7:018155c80657 20 void send_byte(int byte);
tulanthoar 7:018155c80657 21 void send_color(int r, int g, int b);
tulanthoar 7:018155c80657 22 public:
tulanthoar 7:018155c80657 23 void set_color_rgb(int r, int g, int b, int led = 0);
tulanthoar 7:018155c80657 24 void clear_led();
tulanthoar 7:018155c80657 25 void turn_on();
tulanthoar 7:018155c80657 26 SeeedChainableLED (DataClockPair pins);
tulanthoar 7:018155c80657 27 };
tulanthoar 7:018155c80657 28
tulanthoar 7:018155c80657 29 SeeedChainableLED::SeeedChainableLED(DataClockPair pins) : datPin_(pins.dataPin), clkPin_(pins.clockPin) {
tulanthoar 7:018155c80657 30 clear_led();
tulanthoar 7:018155c80657 31 }
tulanthoar 7:018155c80657 32
tulanthoar 7:018155c80657 33 void SeeedChainableLED::start_cmd() {
tulanthoar 7:018155c80657 34 send_byte(0x00);
tulanthoar 7:018155c80657 35 send_byte(0x00);
tulanthoar 7:018155c80657 36 send_byte(0x00);
tulanthoar 7:018155c80657 37 send_byte(0x00);
tulanthoar 7:018155c80657 38 }
tulanthoar 7:018155c80657 39
tulanthoar 7:018155c80657 40 void SeeedChainableLED::stop_cmd() {
tulanthoar 7:018155c80657 41 start_cmd();
tulanthoar 7:018155c80657 42 }
tulanthoar 7:018155c80657 43
tulanthoar 7:018155c80657 44 void SeeedChainableLED::clear_led() {
tulanthoar 7:018155c80657 45 set_color_rgb(0,0,0);
tulanthoar 7:018155c80657 46 }
tulanthoar 7:018155c80657 47
tulanthoar 7:018155c80657 48 void SeeedChainableLED::turn_on() {
tulanthoar 7:018155c80657 49 set_color_rgb(255,255,255);
tulanthoar 7:018155c80657 50 }
tulanthoar 7:018155c80657 51
tulanthoar 7:018155c80657 52 void SeeedChainableLED::pin_delay(int delay_us) {
tulanthoar 7:018155c80657 53 wait_us(delay_us);
tulanthoar 7:018155c80657 54 }
tulanthoar 7:018155c80657 55
tulanthoar 7:018155c80657 56 void SeeedChainableLED::set_color_rgb(int r, int g, int b, int led) {
tulanthoar 7:018155c80657 57 start_cmd();
tulanthoar 7:018155c80657 58 send_color(r, g, b);
tulanthoar 7:018155c80657 59 stop_cmd();
tulanthoar 7:018155c80657 60 }
tulanthoar 7:018155c80657 61
tulanthoar 7:018155c80657 62 void SeeedChainableLED::send_color(int red, int green, int blue) {
tulanthoar 7:018155c80657 63 // Start by sending a byte with the format "1 1 /B7 /B6 /G7 /G6 /R7 /R6"
tulanthoar 7:018155c80657 64 int prefix = 0b11000000;
tulanthoar 7:018155c80657 65 if ((blue & 0x80) == 0) prefix|= 0b00100000;
tulanthoar 7:018155c80657 66 if ((blue & 0x40) == 0) prefix|= 0b00010000;
tulanthoar 7:018155c80657 67 if ((green & 0x80) == 0) prefix|= 0b00001000;
tulanthoar 7:018155c80657 68 if ((green & 0x40) == 0) prefix|= 0b00000100;
tulanthoar 7:018155c80657 69 if ((red & 0x80) == 0) prefix|= 0b00000010;
tulanthoar 7:018155c80657 70 if ((red & 0x40) == 0) prefix|= 0b00000001;
tulanthoar 7:018155c80657 71 send_byte(prefix);
tulanthoar 7:018155c80657 72 // Now send the 3 colors
tulanthoar 7:018155c80657 73 send_byte(blue);
tulanthoar 7:018155c80657 74 send_byte(green);
tulanthoar 7:018155c80657 75 send_byte(red);
tulanthoar 7:018155c80657 76 }
tulanthoar 7:018155c80657 77
tulanthoar 7:018155c80657 78 void SeeedChainableLED::send_byte(int byte) {
tulanthoar 7:018155c80657 79 for (int i = 0; i < 8; i++) {
tulanthoar 7:018155c80657 80 pin_delay();
tulanthoar 7:018155c80657 81 datPin_ = byte & 0x80;
tulanthoar 7:018155c80657 82 byte <<= 1;
tulanthoar 7:018155c80657 83 clkPin_ = 0;
tulanthoar 7:018155c80657 84 pin_delay();
tulanthoar 7:018155c80657 85 clkPin_ = 1;
tulanthoar 7:018155c80657 86 }
tulanthoar 7:018155c80657 87 }
tulanthoar 7:018155c80657 88
tulanthoar 7:018155c80657 89 #endif