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author | James McKenzie <git@madingley.org> | 2014-12-15 12:10:09 +0000 |
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committer | James McKenzie <git@madingley.org> | 2014-12-15 12:10:09 +0000 |
commit | dcfe43860be2daf118e81a59029a34f018926ae5 (patch) | |
tree | 5d662969a51473eaaab6a8994e9f07b868c8ffa6 /clock.c | |
download | clock-dcfe43860be2daf118e81a59029a34f018926ae5.tar.gz clock-dcfe43860be2daf118e81a59029a34f018926ae5.tar.bz2 clock-dcfe43860be2daf118e81a59029a34f018926ae5.zip |
Diffstat (limited to 'clock.c')
-rw-r--r-- | clock.c | 182 |
1 files changed, 182 insertions, 0 deletions
@@ -0,0 +1,182 @@ +/* +* Light_WS2812 library example - RGB_blinky +* +* cycles one LED through red, green, blue +* +* This example is configured for a ATtiny85 with PLL clock fuse set and +* the WS2812 string connected to PB4. +*/ + +#include "project.h" + + +#define N_COLORS (288*2) +#define N_LEDS 24 + + +struct RGB led[N_LEDS]; + + + +static uint32_t ticks; /* 4 ticks per second */ + + +static void +do_hand (int w, uint8_t r, uint8_t g, uint8_t b) +{ + int i, j; + + for (i = 0; w >= 50; ++i, w -= 50); + + i %= N_LEDS; + j = i + 1; + j %= N_LEDS; + + led[i].r += (r * (49 - w)) / 49; + led[i].g += (g * (49 - w)) / 49; + led[i].b += (b * (49 - w)) / 49; + + led[j].r += (r * w) / 49; + led[j].g += (g * w) / 49; + led[j].b += (b * w) / 49; + +} + + +static void +tick (void) +{ + uint32_t r; + ticks++; + + + + if ((ticks%20)<10) { + PORTD&=~(1<<5); + } else { + PORTD|=1<<5; + } + + + memset (led, 0, sizeof (led)); + + r = ticks % 1200; + + do_hand (r, 255, 0, 0); + + r = (ticks / 60) % 1200; + + do_hand (r, 0, 255, 0); + + r = (ticks / 720) % 1200; + + + + do_hand (r, 0, 0, 255); + + ws2812_setleds (led, N_LEDS); + +} + +static void off(void) +{ + memset (led, 0, sizeof (led)); + ws2812_setleds (led, N_LEDS); +} + +int get_int(char *buf) +{ +int r; + +r=buf[0]-'0'; +r*=10; +r+=buf[1]-'0'; + +return r; +} + + +static void command_dispatch(char *buf) +{ +uint32_t r=ticks/20; +int h,m,s; + +if ((buf[2]==':') && (buf[5]==':')) { + h=get_int(buf); + m=get_int(buf+3); + s=get_int(buf+6); + + r=h; + r*=60; + r+=m; + r*=60; + r+=s; + ticks=r*20; +} + + +h=r/3600; +r -= h*3600; +m=r/60; +r -= m*60; +s=r; +printf("%02d.%02d.%02d\n",h,m,s); +} + + + +static void serial_dispatch(void) +{ +static char buf[64]; +static int bptr=0; + +int r=usb_serial_getchar(); +if (r==-1) return; + + +if (r==10) { + buf[bptr]=0; + command_dispatch(buf); + bptr=0; + return; +} + +buf[bptr++]=r; + +if (bptr==(sizeof(buf) -1 )) { + bptr=0; + return; +} +} + + + +int +main (void) +{ + int i, j, k; + + setup_clocks (); + off(); + stdio_init (); + + + DDRD|=1<<5; + + ticks=0; + ticks*=60; + ticks+=30; + ticks*=60; + ticks+=15; + ticks*=20; + + + + + while (1) + { + tick (); + serial_dispatch(); + _delay_ms (50); // wait for 500ms. + } +} |