kingkevin
/
led_clock-old
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

add function to display hour

This commit is contained in:
King Kévin 2016-02-19 11:31:30 +01:00
parent 2a7d921d1a
commit c40e097015
1 changed files with 41 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
main.c
View File

@ -38,6 +38,14 @@
/* flag set in interrupts to be processed in main task */
volatile bool button_flag = false; // button has been pressed
// the number of ticks in one second
#define TICKS_PER_SECOND 255
/* I can't do the following in define because how defines are stored would cause an integer overflow in the arithmetics */
const uint32_t ticks_second = TICKS_PER_SECOND; // the number of ticks in one second
const uint32_t ticks_minute = 60*TICKS_PER_SECOND; // the number of ticks in one minute
const uint32_t ticks_hour = 60*60*TICKS_PER_SECOND; // the number of ticks in one hour
const uint32_t ticks_midday = 12*60*60*TICKS_PER_SECOND; // the number of ticks in one midday (12 hours)
uint8_t clock_leds[WS2812B_LEDS*3] = {0}; // RGB values for the WS2812b clock LEDs
/* default output (i.e. for printf) */
@ -87,7 +95,7 @@ void led_toggle(void)
}
/* switch off all clock LEDs */
static void leds_clear(void)
static void clock_clear(void)
{
// set all colors of all LEDs to 0
for (uint16_t i=0; i<LENGTH(clock_leds); i++) {
@ -96,16 +104,35 @@ static void leds_clear(void)
}
/* set hours mark on clock LEDs */
static void leds_hours(void)
static void clock_hours(void)
{
for (uint8_t hour=0; hour<12; hour++) {
uint16_t led = LENGTH(clock_leds)/3/12*hour;
uint16_t led = WS2812B_LEDS/12*hour;
clock_leds[led*3+0] = 0xff;
clock_leds[led*3+1] = 0xff;
clock_leds[led*3+2] = 0xff;
}
}
/* set hour progress on clock LEDs */
static void clock_hour(uint32_t time)
{
time %= ticks_midday; // the LED strip can only display 12 hours
uint32_t led_hour = WS2812B_LEDS*time/ticks_midday; // scale to number of LEDs
if (led_hour<WS2812B_LEDS) {
clock_leds[led_hour*3+0] = 0;
clock_leds[led_hour*3+1] = 0;
clock_leds[led_hour*3+2] = 0xff;
}
/*
for (uint16_t led=0; led<hour; led++) {
clock_leds[led*3+0] = 0;
clock_leds[led*3+1] = 0;
clock_leds[led*3+2] = 0xff;
}
*/
}
/* set the LEDs */
static void leds_set(void)
{
@ -141,11 +168,15 @@ int main(void)
#endif
ws2812b_setup(); // setup WS2812b LEDs
leds_clear(); // clear LED values
clock_clear(); // clear clock LEDs
printf("welcome to the CuVoodoo LED clock\n"); // print welcome message
led_on(); // switch on LED to indicate setup completed
clock_hour(6*ticks_hour);
leds_set(); // set the colors of all LEDs
ws2812b_transmit(); // transmit set color
bool action = false; // if an action has been performed don't go to sleep
button_flag = false; // reset button flag
char c; // to store received character
@ -184,11 +215,14 @@ int main(void)
clock_leds[1] = 0;
clock_leds[2] = 0xff;
break;
case 'h': // show hours
leds_hours();
case 'm': // show hour marks
clock_hours();
break;
case 'h': // show hours
clock_hour(6*ticks_hour);
break;
default: // set no color
leds_clear();
clock_clear();
break;
}
leds_set(); // set the colors of all LEDs