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tornado/fw/tornado.c: update signal processing from sim/alg.c

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This commit is contained in:
Werner Almesberger 2012-12-15 04:53:57 -03:00
parent 45f14d214a
commit 2dc2fb278c
1 changed files with 12 additions and 8 deletions
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20
tornado/fw/tornado.c
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@ -96,10 +96,10 @@ static uint16_t adc(bool x)
} }
#define E_SHIFT 3 /* ~ 0.1 */ #define E_SHIFT 8 /* ~ 0.06 */
#define M_SHIFT 11 /* ~ 1/sample_rate */ #define M_SHIFT 11 /* ~ 2/sample_rate */
#define HYSTERESIS 14 #define HYSTERESIS 9 /* 1 g / 3 */
static const uint8_t img[] PROGMEM = { static const uint8_t img[] PROGMEM = {
@ -115,8 +115,8 @@ static volatile uint16_t sample_t = 0, sample_v;
static void zxing(uint16_t x, uint16_t y) static void zxing(uint16_t x, uint16_t y)
{ {
static uint16_t e = 512 << E_SHIFT; static uint32_t e = (uint32_t) 512 << E_SHIFT;
static uint32_t m = 512 << M_SHIFT; static uint32_t m = (uint32_t) 512 << M_SHIFT;
int16_t d; int16_t d;
static bool up = 0; static bool up = 0;
static bool on = 0; static bool on = 0;
@ -125,10 +125,9 @@ static void zxing(uint16_t x, uint16_t y)
sample_t++; sample_t++;
sample_v = x; sample_v = x;
return;
e = y+(e-(e >> E_SHIFT)); e = x+(e-(e >> E_SHIFT));
m = y+(m-(m >> M_SHIFT)); m = x+(m-(m >> M_SHIFT));
d = (e >> E_SHIFT)-(m >> M_SHIFT); d = (e >> E_SHIFT)-(m >> M_SHIFT);
if (up) { if (up) {
if (d < -HYSTERESIS) if (d < -HYSTERESIS)
@ -227,10 +226,15 @@ int main(void)
uint32_t n = 0; uint32_t n = 0;
sample = zxing; sample = zxing;
/* MMC doesn't work when running from battery, probably because we
have no regulation. Just disable it for now. */
#if 0
if (!mmc_init()) if (!mmc_init())
panic(); panic();
#endif
accel_start(); accel_start();
sei(); sei();
while (1);
while (1) { while (1) {
uint16_t t, v; uint16_t t, v;