Class to control the chainable RGB LED light from Seeed Studios
Dependents: Nucleo_read_button_interrupt_copy Seeed_Grove_4_Digit_Display_Clock
SeeedChainableLED.h@0:fab321797d4b, 2017-05-21 (annotated)
- Committer:
- tulanthoar
- Date:
- Sun May 21 19:20:57 2017 +0000
- Revision:
- 0:fab321797d4b
initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tulanthoar | 0:fab321797d4b | 1 | /** |
tulanthoar | 0:fab321797d4b | 2 | * @file SeeedChainableLED.h |
tulanthoar | 0:fab321797d4b | 3 | * @brief control the chainable LED module from Seeed Studios |
tulanthoar | 0:fab321797d4b | 4 | * @author Nathan Yonkee |
tulanthoar | 0:fab321797d4b | 5 | * @version 1.0 |
tulanthoar | 0:fab321797d4b | 6 | * @date 2017-04-20 |
tulanthoar | 0:fab321797d4b | 7 | */ |
tulanthoar | 0:fab321797d4b | 8 | #ifndef SEEED_CHAINABLE_LED_H |
tulanthoar | 0:fab321797d4b | 9 | #define SEEED_CHAINABLE_LED_H |
tulanthoar | 0:fab321797d4b | 10 | #include "mbed.h" |
tulanthoar | 0:fab321797d4b | 11 | #include "DataClockPair.h" |
tulanthoar | 0:fab321797d4b | 12 | |
tulanthoar | 0:fab321797d4b | 13 | class SeeedChainableLED { |
tulanthoar | 0:fab321797d4b | 14 | private: |
tulanthoar | 0:fab321797d4b | 15 | DigitalOut datPin_; |
tulanthoar | 0:fab321797d4b | 16 | DigitalOut clkPin_; |
tulanthoar | 0:fab321797d4b | 17 | void start_cmd(); |
tulanthoar | 0:fab321797d4b | 18 | void stop_cmd(); |
tulanthoar | 0:fab321797d4b | 19 | void pin_delay(int delay_us = 6); |
tulanthoar | 0:fab321797d4b | 20 | void send_byte(int byte); |
tulanthoar | 0:fab321797d4b | 21 | void send_color(int r, int g, int b); |
tulanthoar | 0:fab321797d4b | 22 | public: |
tulanthoar | 0:fab321797d4b | 23 | void set_color_rgb(int r, int g, int b, int led = 0); |
tulanthoar | 0:fab321797d4b | 24 | void clear_led(); |
tulanthoar | 0:fab321797d4b | 25 | void turn_on(); |
tulanthoar | 0:fab321797d4b | 26 | SeeedChainableLED (DataClockPair pins); |
tulanthoar | 0:fab321797d4b | 27 | }; |
tulanthoar | 0:fab321797d4b | 28 | |
tulanthoar | 0:fab321797d4b | 29 | SeeedChainableLED::SeeedChainableLED(DataClockPair pins) : datPin_(pins.dataPin), clkPin_(pins.clockPin) { |
tulanthoar | 0:fab321797d4b | 30 | clear_led(); |
tulanthoar | 0:fab321797d4b | 31 | } |
tulanthoar | 0:fab321797d4b | 32 | |
tulanthoar | 0:fab321797d4b | 33 | void SeeedChainableLED::start_cmd() { |
tulanthoar | 0:fab321797d4b | 34 | send_byte(0x00); |
tulanthoar | 0:fab321797d4b | 35 | send_byte(0x00); |
tulanthoar | 0:fab321797d4b | 36 | send_byte(0x00); |
tulanthoar | 0:fab321797d4b | 37 | send_byte(0x00); |
tulanthoar | 0:fab321797d4b | 38 | } |
tulanthoar | 0:fab321797d4b | 39 | |
tulanthoar | 0:fab321797d4b | 40 | void SeeedChainableLED::stop_cmd() { |
tulanthoar | 0:fab321797d4b | 41 | start_cmd(); |
tulanthoar | 0:fab321797d4b | 42 | } |
tulanthoar | 0:fab321797d4b | 43 | |
tulanthoar | 0:fab321797d4b | 44 | void SeeedChainableLED::clear_led() { |
tulanthoar | 0:fab321797d4b | 45 | set_color_rgb(0,0,0); |
tulanthoar | 0:fab321797d4b | 46 | } |
tulanthoar | 0:fab321797d4b | 47 | |
tulanthoar | 0:fab321797d4b | 48 | void SeeedChainableLED::turn_on() { |
tulanthoar | 0:fab321797d4b | 49 | set_color_rgb(255,255,255); |
tulanthoar | 0:fab321797d4b | 50 | } |
tulanthoar | 0:fab321797d4b | 51 | |
tulanthoar | 0:fab321797d4b | 52 | void SeeedChainableLED::pin_delay(int delay_us) { |
tulanthoar | 0:fab321797d4b | 53 | wait_us(delay_us); |
tulanthoar | 0:fab321797d4b | 54 | } |
tulanthoar | 0:fab321797d4b | 55 | |
tulanthoar | 0:fab321797d4b | 56 | void SeeedChainableLED::set_color_rgb(int r, int g, int b, int led) { |
tulanthoar | 0:fab321797d4b | 57 | start_cmd(); |
tulanthoar | 0:fab321797d4b | 58 | send_color(r, g, b); |
tulanthoar | 0:fab321797d4b | 59 | stop_cmd(); |
tulanthoar | 0:fab321797d4b | 60 | } |
tulanthoar | 0:fab321797d4b | 61 | |
tulanthoar | 0:fab321797d4b | 62 | void SeeedChainableLED::send_color(int red, int green, int blue) { |
tulanthoar | 0:fab321797d4b | 63 | // Start by sending a byte with the format "1 1 /B7 /B6 /G7 /G6 /R7 /R6" |
tulanthoar | 0:fab321797d4b | 64 | int prefix = 0b11000000; |
tulanthoar | 0:fab321797d4b | 65 | if ((blue & 0x80) == 0) prefix|= 0b00100000; |
tulanthoar | 0:fab321797d4b | 66 | if ((blue & 0x40) == 0) prefix|= 0b00010000; |
tulanthoar | 0:fab321797d4b | 67 | if ((green & 0x80) == 0) prefix|= 0b00001000; |
tulanthoar | 0:fab321797d4b | 68 | if ((green & 0x40) == 0) prefix|= 0b00000100; |
tulanthoar | 0:fab321797d4b | 69 | if ((red & 0x80) == 0) prefix|= 0b00000010; |
tulanthoar | 0:fab321797d4b | 70 | if ((red & 0x40) == 0) prefix|= 0b00000001; |
tulanthoar | 0:fab321797d4b | 71 | send_byte(prefix); |
tulanthoar | 0:fab321797d4b | 72 | // Now send the 3 colors |
tulanthoar | 0:fab321797d4b | 73 | send_byte(blue); |
tulanthoar | 0:fab321797d4b | 74 | send_byte(green); |
tulanthoar | 0:fab321797d4b | 75 | send_byte(red); |
tulanthoar | 0:fab321797d4b | 76 | } |
tulanthoar | 0:fab321797d4b | 77 | |
tulanthoar | 0:fab321797d4b | 78 | void SeeedChainableLED::send_byte(int byte) { |
tulanthoar | 0:fab321797d4b | 79 | for (int i = 0; i < 8; i++) { |
tulanthoar | 0:fab321797d4b | 80 | pin_delay(); |
tulanthoar | 0:fab321797d4b | 81 | datPin_ = byte & 0x80; |
tulanthoar | 0:fab321797d4b | 82 | byte <<= 1; |
tulanthoar | 0:fab321797d4b | 83 | clkPin_ = 0; |
tulanthoar | 0:fab321797d4b | 84 | pin_delay(); |
tulanthoar | 0:fab321797d4b | 85 | clkPin_ = 1; |
tulanthoar | 0:fab321797d4b | 86 | } |
tulanthoar | 0:fab321797d4b | 87 | } |
tulanthoar | 0:fab321797d4b | 88 | |
tulanthoar | 0:fab321797d4b | 89 | #endif |