school project using led strip
Fork of PololuLedStrip by
PololuLedStrip.h
- Committer:
- DavidEGrayson
- Date:
- 2013-02-27
- Revision:
- 0:06475317f283
- Child:
- 1:102307d9b701
File content as of revision 0:06475317f283:
#include "mbed.h" #ifndef _POLOLU_LED_STRIP_H #define _POLOLU_LED_STRIP_H namespace Pololu { #ifndef _POLOLU_RGB_COLOR #define _POLOLU_RGB_COLOR typedef struct rgb_color { uint8_t red, green, blue; } rgb_color; #endif extern "C" int led_strip_write_color(rgb_color *, volatile uint32_t * set, volatile uint32_t * clear, uint32_t mask); class PololuLedStrip { gpio_t gpio; public: PololuLedStrip(PinName pin); void write(rgb_color * colors, unsigned int count); static bool interruptFriendly; }; bool PololuLedStrip::interruptFriendly; PololuLedStrip::PololuLedStrip(PinName pinName) { gpio_init(&gpio, pinName, PIN_OUTPUT); } void PololuLedStrip::write(rgb_color * colors, unsigned int count) { __disable_irq(); // Disable interrupts temporarily because we don't want our pulse timing to be messed up. while(count--) { led_strip_write_color(colors++, gpio.reg_set, gpio.reg_clr, gpio.mask); if (interruptFriendly) { __enable_irq(); __nop(); __nop(); __nop(); __disable_irq(); } } __enable_irq(); // Re-enable interrupts now that we are done. wait_us(24); // Hold the line low for 24 microseconds to send the reset signal. } } using namespace Pololu; #endif