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#include "project.h"
static unsigned motor_pos[HANDS];
static unsigned off[HANDS];
#define M1_A GPIO11
#define M1_A_PORT GPIOB
#define M1_B GPIO12
#define M1_B_PORT GPIOB
#define M1_C GPIO13
#define M1_C_PORT GPIOB
#define M1_D GPIO14
#define M1_D_PORT GPIOB
#define ADJUST_CCW GPIO0
#define ADJUST_CCW_PORT GPIOC
#define ADJUST_CW GPIO1
#define ADJUST_CW_PORT GPIOC
static void coils (unsigned m, int a, int b, int c, int d)
{
if (!m) return;
c^=d;
d^=c;
c^=d;
#if 0
a^=c;
c^=a;
a^=c;
b^=d;
d^=b;
b^=d;
#endif
if (a)
SET (M1_A);
else
CLEAR (M1_A);
if (b)
SET (M1_B);
else
CLEAR (M1_B);
if (c)
SET (M1_C);
else
CLEAR (M1_C);
if (d)
SET (M1_D);
else
CLEAR (M1_D);
//printf ("Motor %d: %+d %+d\r\n", m, a - b, c - d);
}
static void step (unsigned m, int d)
{
unsigned s = motor_pos[m];
if (d < 0) d += MOTOR_STEPS;
s += d;
s %= MOTOR_STEPS;
#if 0
// full step
switch (s & 3) {
case 0:
coils (m, 0, 1, 0, 1);
break;
case 1:
coils (m, 0, 1, 1, 0);
break;
case 2:
coils (m, 1, 0, 1, 0);
break;
case 3:
coils (m, 1, 0, 0, 1);
break;
}
#endif
#if 0
// half step
coils (m, !! ((s + 1) & 4), !! ((s + 6) & 4), !! ((s + 4) & 4), !! ((s + 7) & 4));
#endif
#if 1
//60deg phase
switch(s%6) {
case 0:
coils(m,0,0,1,0);
break;
case 1:
coils(m,1,0,1,0);
break;
case 2:
coils(m,1,0,0,0);
break;
case 3:
coils(m,0,0,0,1);
break;
case 4:
coils(m,0,1,0,1);
break;
case 5:
coils(m,0,1,0,0);
break;
}
#endif
if (!m)
BKP_DR8 = motor_pos[0] = s;
else
BKP_DR9 = motor_pos[1] = s;
}
#define ADJ_P 2500
void motor_tick (void)
{
static uint32_t last,blast;
unsigned i, d;
static unsigned adjusting = ADJ_P; /*5 seconds*/
unsigned hp[2];
if ((ticks - last) < 2) return;
last=ticks;
if ((ticks - blast) > 100) {
if (!GET(ADJUST_CCW)) {
adjusting=ADJ_P;
motor_pos[1]+=MOTOR_PHASES;
motor_pos[1]%=MOTOR_STEPS;
}
if (!GET(ADJUST_CW)) {
adjusting=ADJ_P;
motor_pos[1]+=MOTOR_STEPS-MOTOR_PHASES;
motor_pos[1]%=MOTOR_STEPS;
}
blast=ticks;
}
if (adjusting || !hands_ready) {
if (adjusting) adjusting--;
hp[0]=0;
hp[1]=0;
} else {
hp[0]=hands_pos[0];
hp[1]=hands_pos[1];
}
//printf("HANDS: %d -> %d %d -> %d\r\n",hands_pos[0],motor_pos[0],hands_pos[1],motor_pos[1]);
for (i = 0; i < HANDS; ++i) {
d = MOTOR_STEPS;
d+=hp[i];
d -= motor_pos[i];
d %= MOTOR_STEPS;
if (d) {
if (d < (MOTOR_STEPS / 2))
step (i, 1);
else
step (i, -1);
}
}
}
void motor_init (void)
{
MAP_OUTPUT_PP (M1_A);
MAP_OUTPUT_PP (M1_B);
MAP_OUTPUT_PP (M1_C);
MAP_OUTPUT_PP (M1_D);
MAP_INPUT_PU(ADJUST_CCW);
MAP_INPUT_PU(ADJUST_CW);
motor_pos[0] = BKP_DR8;
motor_pos[1] = BKP_DR9;
step (0, 0);
step (1, 0);
}
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