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tornado/fw/: display test text on positive zero crossing

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This commit is contained in:
Werner Almesberger 2012-12-04 07:28:55 -03:00
parent c6bef66427
commit f3c22bc6ab
2 changed files with 23 additions and 5 deletions
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6
tornado/fw/Makefile
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@ -78,6 +78,11 @@ boot.elf: $(BOOT_OBJS)
$(BUILD) $(OBJCOPY) -j .text -j .data -O ihex $< $@
$(SIZE) $@
tornado.o: img.inc
img.inc: txt/t
(cd txt; ./t) >$@ || { rm -f $@; exit 1; }
# ----- Cleanup ---------------------------------------------------------------
clean:
@ -86,6 +91,7 @@ clean:
rm -f boot.hex boot.elf
rm -f $(BOOT_OBJS) $(BOOT_OBJS:.o=.d)
rm -f version.c version.d version.o
rm -f img.inc
# ----- Build version ---------------------------------------------------------

22
tornado/fw/tornado.c
View File

@ -2,6 +2,7 @@
#include <stdint.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#define F_CPU 8000000UL
#include <util/delay.h>
@ -100,6 +101,11 @@ static uint16_t adc(bool x)
#define HYSTERESIS 14
static const uint8_t img[] PROGMEM = {
#include "img.inc"
};
static void zxing(uint16_t x, uint16_t y)
{
static uint8_t one[LED_BYTES] =
@ -109,24 +115,30 @@ static void zxing(uint16_t x, uint16_t y)
int16_t d;
static bool up = 0;
static bool on = 0;
static const prog_uint8_t *p;
static uint16_t cols = 0;
e = y+(e-(e >> E_SHIFT));
m = y+(m-(m >> M_SHIFT));
d = (e >> E_SHIFT)-(m >> M_SHIFT);
if (on) {
on = 0;
led_off();
}
if (up) {
if (d < -HYSTERESIS)
up = 0;
} else {
if (d > HYSTERESIS) {
up = 1;
led_show(one);
p = img;
cols = sizeof(img)/LED_BYTES;
on = 1;
}
}
if (cols) {
led_show_pgm(p);
p += 8;
cols--;
} else {
led_off();
}
}