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authorJack Humbert <jack.humb@gmail.com>2016-10-16 16:03:33 -0400
committerJack Humbert <jack.humb@gmail.com>2016-10-16 16:03:33 -0400
commit5f91fb413624781ac79db641549b9e08753c04b5 (patch)
treeab94b44cdc5c501ac6d9bcba920dd9a5141a7963 /quantum/light_ws2812.c
parentb8679bbe045a2285d6ab6bbc420121b26f516b9a (diff)
working with power limit
Diffstat (limited to 'quantum/light_ws2812.c')
-rwxr-xr-xquantum/light_ws2812.c137
1 files changed, 136 insertions, 1 deletions
diff --git a/quantum/light_ws2812.c b/quantum/light_ws2812.c
index 401845e855..d38dac4c69 100755
--- a/quantum/light_ws2812.c
+++ b/quantum/light_ws2812.c
@@ -16,6 +16,122 @@
#include <util/delay.h>
#include "debug.h"
+#define RGBW_BB_TWI 1
+
+#ifdef RGBW_BB_TWI
+
+// Port for the I2C
+#define I2C_DDR DDRD
+#define I2C_PIN PIND
+#define I2C_PORT PORTD
+
+// Pins to be used in the bit banging
+#define I2C_CLK 0
+#define I2C_DAT 1
+
+#define I2C_DATA_HI()\
+I2C_DDR &= ~ (1 << I2C_DAT);\
+I2C_PORT |= (1 << I2C_DAT);
+#define I2C_DATA_LO()\
+I2C_DDR |= (1 << I2C_DAT);\
+I2C_PORT &= ~ (1 << I2C_DAT);
+
+#define I2C_CLOCK_HI()\
+I2C_DDR &= ~ (1 << I2C_CLK);\
+I2C_PORT |= (1 << I2C_CLK);
+#define I2C_CLOCK_LO()\
+I2C_DDR |= (1 << I2C_CLK);\
+I2C_PORT &= ~ (1 << I2C_CLK);
+
+#define I2C_DELAY 1
+
+void I2C_WriteBit(unsigned char c)
+{
+ if (c > 0)
+ {
+ I2C_DATA_HI();
+ }
+ else
+ {
+ I2C_DATA_LO();
+ }
+
+ I2C_CLOCK_HI();
+ _delay_us(I2C_DELAY);
+
+ I2C_CLOCK_LO();
+ _delay_us(I2C_DELAY);
+
+ if (c > 0)
+ {
+ I2C_DATA_LO();
+ }
+
+ _delay_us(I2C_DELAY);
+}
+
+// Inits bitbanging port, must be called before using the functions below
+//
+void I2C_Init()
+{
+ I2C_PORT &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
+
+ I2C_CLOCK_HI();
+ I2C_DATA_HI();
+
+ _delay_us(I2C_DELAY);
+}
+
+// Send a START Condition
+//
+void I2C_Start()
+{
+ // set both to high at the same time
+ I2C_DDR &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
+ _delay_us(I2C_DELAY);
+
+ I2C_DATA_LO();
+ _delay_us(I2C_DELAY);
+
+ I2C_CLOCK_LO();
+ _delay_us(I2C_DELAY);
+}
+
+// Send a STOP Condition
+//
+void I2C_Stop()
+{
+ I2C_CLOCK_HI();
+ _delay_us(I2C_DELAY);
+
+ I2C_DATA_HI();
+ _delay_us(I2C_DELAY);
+}
+
+// write a byte to the I2C slave device
+//
+unsigned char I2C_Write(unsigned char c)
+{
+ for (char i = 0; i < 8; i++)
+ {
+ I2C_WriteBit(c & 128);
+
+ c <<= 1;
+ }
+
+
+ I2C_WriteBit(0);
+ _delay_us(I2C_DELAY);
+ _delay_us(I2C_DELAY);
+
+ // _delay_us(I2C_DELAY);
+ //return I2C_ReadBit();
+ return 0;
+}
+
+
+#endif
+
// Setleds for standard RGB
void inline ws2812_setleds(struct cRGB *ledarray, uint16_t leds)
{
@@ -41,6 +157,25 @@ void inline ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t leds)
_SFR_IO8((RGB_DI_PIN >> 4) + 1) |= _BV(RGB_DI_PIN & 0xF);
ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(RGB_DI_PIN & 0xF));
+
+ #ifdef RGBW_BB_TWI
+ cli();
+ TWCR = 0;
+ I2C_Init();
+ I2C_Start();
+ I2C_Write(0x84);
+ uint16_t datlen = leds<<2;
+ uint8_t curbyte;
+ uint8_t * data = (uint8_t*)ledarray;
+ while (datlen--) {
+ curbyte=*data++;
+ I2C_Write(curbyte % 0x10);
+ }
+ I2C_Stop();
+ sei();
+ #endif
+
+
_delay_us(80);
}
@@ -123,7 +258,7 @@ void inline ws2812_sendarray_mask(uint8_t *data,uint16_t datlen,uint8_t maskhi)
cli();
while (datlen--) {
- curbyte=*data++;
+ curbyte=(*data++) % 0x10;
asm volatile(
" ldi %0,8 \n\t"