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-rw-r--r--keyboards/work_louder/rgb_functions.c157
1 files changed, 152 insertions, 5 deletions
diff --git a/keyboards/work_louder/rgb_functions.c b/keyboards/work_louder/rgb_functions.c
index 5a2043f9b4..c9106b3976 100644
--- a/keyboards/work_louder/rgb_functions.c
+++ b/keyboards/work_louder/rgb_functions.c
@@ -17,13 +17,160 @@
#include QMK_KEYBOARD_H
#include "rgb_functions.h"
-#if defined(RGBLIGHT_ENABLE) && defined(RGB_MATRIX_EANBLE)
-# undef RGB_DI_PIN
-# define RGBLIGHT_DI_PIN
-# include "ws2812.c"
+#ifdef RGBLIGHT_ENABLE
+# include "ws2812.h"
+# include <avr/interrupt.h>
+# include <avr/io.h>
+# include <util/delay.h>
+
+# define pinmask(pin) (_BV((pin)&0xF))
+
+/*
+ * Forward declare internal functions
+ *
+ * The functions take a byte-array and send to the data output as WS2812 bitstream.
+ * The length is the number of bytes to send - three per LED.
+ */
+
+static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi);
+
+/*
+ This routine writes an array of bytes with RGB values to the Dataout pin
+ using the fast 800kHz clockless WS2811/2812 protocol.
+*/
+
+// Timing in ns
+# define w_zeropulse 350
+# define w_onepulse 900
+# define w_totalperiod 1250
+
+// Fixed cycles used by the inner loop
+# define w_fixedlow 2
+# define w_fixedhigh 4
+# define w_fixedtotal 8
+
+// Insert NOPs to match the timing, if possible
+# define w_zerocycles (((F_CPU / 1000) * w_zeropulse) / 1000000)
+# define w_onecycles (((F_CPU / 1000) * w_onepulse + 500000) / 1000000)
+# define w_totalcycles (((F_CPU / 1000) * w_totalperiod + 500000) / 1000000)
+
+// w1_nops - nops between rising edge and falling edge - low
+# if w_zerocycles >= w_fixedlow
+# define w1_nops (w_zerocycles - w_fixedlow)
+# else
+# define w1_nops 0
+# endif
+
+// w2_nops - nops between fe low and fe high
+# if w_onecycles >= (w_fixedhigh + w1_nops)
+# define w2_nops (w_onecycles - w_fixedhigh - w1_nops)
+# else
+# define w2_nops 0
+# endif
+
+// w3_nops - nops to complete loop
+# if w_totalcycles >= (w_fixedtotal + w1_nops + w2_nops)
+# define w3_nops (w_totalcycles - w_fixedtotal - w1_nops - w2_nops)
+# else
+# define w3_nops 0
+# endif
+
+// The only critical timing parameter is the minimum pulse length of the "0"
+// Warn or throw error if this timing can not be met with current F_CPU settings.
+# define w_lowtime ((w1_nops + w_fixedlow) * 1000000) / (F_CPU / 1000)
+# if w_lowtime > 550
+# error "Light_ws2812: Sorry, the clock speed is too low. Did you set F_CPU correctly?"
+# elif w_lowtime > 450
+# warning "Light_ws2812: The timing is critical and may only work on WS2812B, not on WS2812(S)."
+# warning "Please consider a higher clockspeed, if possible"
+# endif
+
+# define w_nop1 "nop \n\t"
+# define w_nop2 "rjmp .+0 \n\t"
+# define w_nop4 w_nop2 w_nop2
+# define w_nop8 w_nop4 w_nop4
+# define w_nop16 w_nop8 w_nop8
+
+static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi) {
+ uint8_t curbyte, ctr, sreg_prev;
+
+ sreg_prev = SREG;
+ cli();
+
+ while (datlen--) {
+ curbyte = (*data++);
+
+ asm volatile(" ldi %0,8 \n\t"
+ "loop%=: \n\t"
+ " out %2,%3 \n\t" // '1' [01] '0' [01] - re
+# if (w1_nops & 1)
+ w_nop1
+# endif
+# if (w1_nops & 2)
+ w_nop2
+# endif
+# if (w1_nops & 4)
+ w_nop4
+# endif
+# if (w1_nops & 8)
+ w_nop8
+# endif
+# if (w1_nops & 16)
+ w_nop16
+# endif
+ " sbrs %1,7 \n\t" // '1' [03] '0' [02]
+ " out %2,%4 \n\t" // '1' [--] '0' [03] - fe-low
+ " lsl %1 \n\t" // '1' [04] '0' [04]
+# if (w2_nops & 1)
+ w_nop1
+# endif
+# if (w2_nops & 2)
+ w_nop2
+# endif
+# if (w2_nops & 4)
+ w_nop4
+# endif
+# if (w2_nops & 8)
+ w_nop8
+# endif
+# if (w2_nops & 16)
+ w_nop16
+# endif
+ " out %2,%4 \n\t" // '1' [+1] '0' [+1] - fe-high
+# if (w3_nops & 1)
+ w_nop1
+# endif
+# if (w3_nops & 2)
+ w_nop2
+# endif
+# if (w3_nops & 4)
+ w_nop4
+# endif
+# if (w3_nops & 8)
+ w_nop8
+# endif
+# if (w3_nops & 16)
+ w_nop16
+# endif
+
+ " dec %0 \n\t" // '1' [+2] '0' [+2]
+ " brne loop%=\n\t" // '1' [+3] '0' [+4]
+ : "=&d"(ctr)
+ : "r"(curbyte), "I"(_SFR_IO_ADDR(PORTx_ADDRESS(RGBLIGHT_DI_PIN))), "r"(maskhi), "r"(masklo));
+ }
+
+ SREG = sreg_prev;
+}
void rgblight_call_driver(LED_TYPE *start_led, uint8_t num_leds) {
- ws2812_setleds(start_led, num_leds);
+ DDRx_ADDRESS(RGBLIGHT_DI_PIN) |= pinmask(RGBLIGHT_DI_PIN);
+
+ uint8_t masklo = ~(pinmask(RGBLIGHT_DI_PIN)) & PORTx_ADDRESS(RGBLIGHT_DI_PIN);
+ uint8_t maskhi = pinmask(RGBLIGHT_DI_PIN) | PORTx_ADDRESS(RGBLIGHT_DI_PIN);
+
+ ws2812_sendarray_mask((uint8_t *)start_led, num_leds * sizeof(LED_TYPE), masklo, maskhi);
+
+ _delay_us(WS2812_TRST_US);
}
#endif