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altos: Share common LCO functions in ao_lco_bits.c
[fw/altos]
/
src
/
drivers
/
ao_quadrature.c
diff --git
a/src/drivers/ao_quadrature.c
b/src/drivers/ao_quadrature.c
index deecfb79422b9c2980507a0a00e9eb3344b64842..59e845181ceea6f5f43f0fe1c854f185e2806076 100644
(file)
--- a/
src/drivers/ao_quadrature.c
+++ b/
src/drivers/ao_quadrature.c
@@
-23,6
+23,10
@@
#include <ao_event.h>
__xdata int32_t ao_quadrature_count[AO_QUADRATURE_COUNT];
#include <ao_event.h>
__xdata int32_t ao_quadrature_count[AO_QUADRATURE_COUNT];
+#ifndef AO_QUADRATURE_SINGLE_CODE
+static int8_t ao_quadrature_step[AO_QUADRATURE_COUNT];
+#endif
+
static uint8_t ao_quadrature_state[AO_QUADRATURE_COUNT];
struct ao_debounce {
static uint8_t ao_quadrature_state[AO_QUADRATURE_COUNT];
struct ao_debounce {
@@
-39,20
+43,25
@@
static struct ao_debounce ao_debounce_state[AO_QUADRATURE_COUNT][2];
#define pinb(q) AO_QUADRATURE_ ## q ## _B ## _PIN
#define isr(q) ao_quadrature_isr_ ## q
#define pinb(q) AO_QUADRATURE_ ## q ## _B ## _PIN
#define isr(q) ao_quadrature_isr_ ## q
-#define DEBOUNCE 10
+#ifndef AO_QUADRATURE_DEBOUNCE
+#error must define AO_QUADRATURE_DEBOUNCE
+#endif
static uint8_t
ao_debounce(uint8_t cur, struct ao_debounce *debounce)
{
static uint8_t
ao_debounce(uint8_t cur, struct ao_debounce *debounce)
{
- if (cur == debounce->state)
- debounce->count = 0;
- else {
- if (++debounce->count == DEBOUNCE) {
- debounce->state = cur;
- debounce->count = 0;
- }
+#if AO_QUADRATURE_DEBOUNCE > 0
+ if (debounce->count > 0) {
+ debounce->count--;
+ } else if (cur != debounce->state) {
+ debounce->state = cur;
+ debounce->count = AO_QUADRATURE_DEBOUNCE;
}
return debounce->state;
}
return debounce->state;
+#else
+ (void) debounce;
+ return cur;
+#endif
}
static uint16_t
}
static uint16_t
@@
-70,8
+79,21
@@
ao_quadrature_read(struct stm_gpio *gpio, uint8_t pin_a, uint8_t pin_b, struct a
#define _ao_quadrature_get(q) ao_quadrature_read(port(q), bita(q), bitb(q), ao_debounce_state[q])
static void
#define _ao_quadrature_get(q) ao_quadrature_read(port(q), bita(q), bitb(q), ao_debounce_state[q])
static void
-_ao_quadrature_
queue
(uint8_t q, int8_t step)
+_ao_quadrature_
step
(uint8_t q, int8_t step)
{
{
+#ifndef AO_QUADRATURE_SINGLE_CODE
+ ao_quadrature_step[q] += step;
+ if (ao_quadrature_state[q] != 0)
+ return;
+ if (ao_quadrature_step[q] >= 4) {
+ ao_quadrature_step[q] = 0;
+ step = 1;
+ } else if (ao_quadrature_step[q] <= -4) {
+ ao_quadrature_step[q] = 0;
+ step = -1;
+ } else
+ return;
+#endif
ao_quadrature_count[q] += step;
#if AO_EVENT
ao_event_put_isr(AO_EVENT_QUADRATURE, q, step);
ao_quadrature_count[q] += step;
#if AO_EVENT
ao_event_put_isr(AO_EVENT_QUADRATURE, q, step);
@@
-79,17
+101,28
@@
_ao_quadrature_queue(uint8_t q, int8_t step)
ao_wakeup(&ao_quadrature_count[q]);
}
ao_wakeup(&ao_quadrature_count[q]);
}
+static const struct {
+ uint8_t prev, next;
+} ao_quadrature_steps[4] = {
+ [0] { .prev = 2, .next = 1 },
+ [1] { .prev = 0, .next = 3 },
+ [3] { .prev = 1, .next = 2 },
+ [2] { .prev = 3, .next = 0 },
+};
+
static void
_ao_quadrature_set(uint8_t q, uint8_t new) {
static void
_ao_quadrature_set(uint8_t q, uint8_t new) {
- uint8_t old
= ao_quadrature_state[q]
;
+ uint8_t old;
- if (old != new && new == 0) {
- if (old & 2)
- _ao_quadrature_queue(q, 1);
- else if (old & 1)
- _ao_quadrature_queue(q, -1);
- }
+ ao_arch_block_interrupts();
+ old = ao_quadrature_state[q];
ao_quadrature_state[q] = new;
ao_quadrature_state[q] = new;
+ ao_arch_release_interrupts();
+
+ if (new == ao_quadrature_steps[old].next)
+ _ao_quadrature_step(q, 1);
+ else if (new == ao_quadrature_steps[old].prev)
+ _ao_quadrature_step(q, -1);
}
static void
}
static void
@@
-124,21
+157,32
@@
ao_quadrature_test(void)
uint8_t q;
int32_t c;
uint8_t s;
uint8_t q;
int32_t c;
uint8_t s;
+#ifndef AO_QUADRATURE_SINGLE_CODE
+ int8_t t = 0;
+#endif
ao_cmd_decimal();
q = ao_cmd_lex_i;
ao_cmd_decimal();
q = ao_cmd_lex_i;
- if (q >= AO_QUADRATURE_COUNT)
{
+ if (q >= AO_QUADRATURE_COUNT)
ao_cmd_status = ao_cmd_syntax_error;
ao_cmd_status = ao_cmd_syntax_error;
+ if (ao_cmd_status != ao_cmd_success)
return;
return;
- }
c = -10000;
s = 0;
while (ao_quadrature_count[q] != 10) {
if (ao_quadrature_count[q] != c ||
c = -10000;
s = 0;
while (ao_quadrature_count[q] != 10) {
if (ao_quadrature_count[q] != c ||
- ao_quadrature_state[q] != s) {
+#ifndef AO_QUADRATURE_SINGLE_CODE
+ ao_quadrature_step[q] != t ||
+#endif
+ ao_quadrature_state[q] != s)
+ {
c = ao_quadrature_count[q];
s = ao_quadrature_state[q];
c = ao_quadrature_count[q];
s = ao_quadrature_state[q];
+#ifndef AO_QUADRATURE_SINGLE_CODE
+ t = ao_quadrature_step[q];
+ printf("step %3d ", t);
+#endif
printf ("count %3d state %2x\n", c, s);
flush();
}
printf ("count %3d state %2x\n", c, s);
flush();
}