David Knight / PololuLedStrip

This library lets you control the addressable RGB LED strips from Pololu Robotics. Forked to add selectable colour order (Support RGB or GRB Leds)

Fork of PololuLedStrip by David Grayson

PololuLedStrip.cpp@1:102307d9b701, 2013-02-27 (annotated)

Committer:
DavidEGrayson
Date:
Wed Feb 27 01:43:44 2013 +0000
Revision:
1:102307d9b701
Child:
4:d3b60bd43811
Initial commit.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DavidEGrayson 1:102307d9b701 1 #include "PololuLedStrip.h"
DavidEGrayson 1:102307d9b701 2
DavidEGrayson 1:102307d9b701 3 bool PololuLedStrip::interruptFriendly = false;
DavidEGrayson 1:102307d9b701 4
DavidEGrayson 1:102307d9b701 5 PololuLedStrip::PololuLedStrip(PinName pinName)
DavidEGrayson 1:102307d9b701 6 {
DavidEGrayson 1:102307d9b701 7 gpio_init(&gpio, pinName, PIN_OUTPUT);
DavidEGrayson 1:102307d9b701 8 }
DavidEGrayson 1:102307d9b701 9
DavidEGrayson 1:102307d9b701 10 void PololuLedStrip::write(rgb_color * colors, unsigned int count)
DavidEGrayson 1:102307d9b701 11 {
DavidEGrayson 1:102307d9b701 12 __disable_irq(); // Disable interrupts temporarily because we don't want our pulse timing to be messed up.
DavidEGrayson 1:102307d9b701 13
DavidEGrayson 1:102307d9b701 14 while(count--)
DavidEGrayson 1:102307d9b701 15 {
DavidEGrayson 1:102307d9b701 16 led_strip_write_color(colors++, gpio.reg_set, gpio.reg_clr, gpio.mask);
DavidEGrayson 1:102307d9b701 17
DavidEGrayson 1:102307d9b701 18 if (interruptFriendly)
DavidEGrayson 1:102307d9b701 19 {
DavidEGrayson 1:102307d9b701 20 __enable_irq();
DavidEGrayson 1:102307d9b701 21 __nop();
DavidEGrayson 1:102307d9b701 22 __nop();
DavidEGrayson 1:102307d9b701 23 __nop();
DavidEGrayson 1:102307d9b701 24 __disable_irq();
DavidEGrayson 1:102307d9b701 25 }
DavidEGrayson 1:102307d9b701 26 }
DavidEGrayson 1:102307d9b701 27
DavidEGrayson 1:102307d9b701 28 __enable_irq(); // Re-enable interrupts now that we are done.
DavidEGrayson 1:102307d9b701 29 wait_us(24); // Hold the line low for 24 microseconds to send the reset signal.
DavidEGrayson 1:102307d9b701 30 }