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@ -20,12 +20,13 @@
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ws2812.h"
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#define pinmask(pin) (_BV((pin)&0xF))
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/*
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* Forward declare internal functions
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*
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@ -33,20 +34,21 @@
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* The length is the number of bytes to send - three per LED.
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*/
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void ws2812_sendarray(uint8_t *array, uint16_t length);
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void ws2812_sendarray_mask(uint8_t *array, uint16_t length, uint8_t pinmask);
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static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi);
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// Setleds for standard RGB
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void inline ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) {
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// ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
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ws2812_setleds_pin(ledarray, leds, _BV(RGB_DI_PIN & 0xF));
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void inline ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) {
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// wrap up usage of RGB_DI_PIN
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ws2812_setleds_pin(ledarray, number_of_leds, RGB_DI_PIN);
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}
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void inline ws2812_setleds_pin(LED_TYPE *ledarray, uint16_t leds, uint8_t pinmask) {
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// new universal format (DDR)
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_SFR_IO8((RGB_DI_PIN >> 4) + 1) |= pinmask;
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void ws2812_setleds_pin(LED_TYPE *ledarray, uint16_t number_of_leds, uint8_t pin) {
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DDRx_ADDRESS(RGB_DI_PIN) |= pinmask(pin);
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ws2812_sendarray_mask((uint8_t *)ledarray, leds * sizeof(LED_TYPE), pinmask);
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uint8_t masklo = ~(pinmask(pin)) & PORTx_ADDRESS(pin);
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uint8_t maskhi = pinmask(pin) | PORTx_ADDRESS(pin);
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ws2812_sendarray_mask((uint8_t *)ledarray, number_of_leds * sizeof(LED_TYPE), masklo, maskhi);
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#ifdef RGBW
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_delay_us(80);
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@ -55,8 +57,6 @@ void inline ws2812_setleds_pin(LED_TYPE *ledarray, uint16_t leds, uint8_t pinmas
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#endif
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}
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void ws2812_sendarray(uint8_t *data, uint16_t datlen) { ws2812_sendarray_mask(data, datlen, _BV(RGB_DI_PIN & 0xF)); }
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/*
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This routine writes an array of bytes with RGB values to the Dataout pin
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using the fast 800kHz clockless WS2811/2812 protocol.
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@ -118,14 +118,9 @@ void ws2812_sendarray(uint8_t *data, uint16_t datlen) { ws2812_sendarray_mask(da
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#define w_nop8 w_nop4 w_nop4
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#define w_nop16 w_nop8 w_nop8
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void inline ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t maskhi) {
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uint8_t curbyte, ctr, masklo;
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uint8_t sreg_prev;
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static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi) {
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uint8_t curbyte, ctr, sreg_prev;
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// masklo =~maskhi&ws2812_PORTREG;
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// maskhi |= ws2812_PORTREG;
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masklo = ~maskhi & _SFR_IO8((RGB_DI_PIN >> 4) + 2);
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maskhi |= _SFR_IO8((RGB_DI_PIN >> 4) + 2);
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sreg_prev = SREG;
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cli();
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@ -188,7 +183,7 @@ void inline ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t maskhi
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" dec %0 \n\t" // '1' [+2] '0' [+2]
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" brne loop%=\n\t" // '1' [+3] '0' [+4]
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: "=&d"(ctr)
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: "r"(curbyte), "I"(_SFR_IO_ADDR(_SFR_IO8((RGB_DI_PIN >> 4) + 2))), "r"(maskhi), "r"(masklo));
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: "r"(curbyte), "I"(_SFR_IO_ADDR(PORTx_ADDRESS(RGB_DI_PIN))), "r"(maskhi), "r"(masklo));
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}
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SREG = sreg_prev;
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