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提升433弱信号解码响应速度

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This commit is contained in:
吴琪
2026-07-28 10:38:02 +08:00
parent 8d3116c2a4
commit 80fa89da50
1 changed files with 14 additions and 144 deletions
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project/example/ble/ble_peripheral/app/src/rf433_decoder.c
+14 -144
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@@ -3,16 +3,14 @@
#define RF433_FIFO_SIZE 256u
#define RF433_GLITCH_DYNAMIC_MIN 2u
#define RF433_GLITCH_DYNAMIC_MAX 4u
#define RF433_SYNC_LOW_MIN 35u //45改35
#define RF433_SYNC_LOW_MAX 200u //180改200
#define RF433_SYNC_HIGH_MIN 1u
#define RF433_SYNC_HIGH_MAX 15u //12改15
#define RF433_BIT_LEN 24u
#define RF433_REPEAT_CONFIRM 1u //2改1
#define RF433_DIRECT_CONFIRM 1u
#define RF433_WEAK_CONFIRM 2u
#define RF433_LEVEL_TIMEOUT 300u //300
@@ -21,7 +19,8 @@
#define RF433_PROCESS_MAX_ONCE 32u
#define RF433_FRAME_SCORE_MIN 50u //70改50
#define RF433_FRAME_SCORE_DIRECT_MIN 50u
#define RF433_FRAME_SCORE_WEAK_MIN 35u
#define RF433_BIT_SCORE_GOOD 4u
#define RF433_BIT_SCORE_NORMAL 3u
#define RF433_BIT_SCORE_POOR 1u
@@ -35,12 +34,6 @@
#define RF433_ANTI_REPEAT_TICK 200u
#if RF433_DECODER_DEBUG_PULSE
#define RF433_PULSE_LOG(fmt, ...) RF433_DECODER_LOG(fmt, ##__VA_ARGS__)
#else
#define RF433_PULSE_LOG(fmt, ...)
#endif
#if RF433_DECODER_DEBUG_DETAIL
#define RF433_DETAIL_LOG(fmt, ...) RF433_DECODER_LOG(fmt, ##__VA_ARGS__)
#else
@@ -94,17 +87,8 @@ typedef struct
} Rf433Decode_t;
typedef struct
{
Rf433Pulse_t p0;
Rf433Pulse_t p1;
Rf433Pulse_t p2;
uint8_t cnt;
} Rf433Repair_t;
static Rf433Fifo_t s_fifo;
static Rf433Decode_t s_dec;
static Rf433Repair_t s_repair;
static uint16_t rf433_limit_t(uint16_t t)
{
@@ -170,17 +154,6 @@ static void rf433_decode_reset(void)
rf433_update_range_by_t(4u);
}
static void rf433_repair_reset(void)
{
s_repair.cnt = 0;
s_repair.p0.level = 0;
s_repair.p0.width = 0;
s_repair.p1.level = 0;
s_repair.p1.width = 0;
s_repair.p2.level = 0;
s_repair.p2.width = 0;
}
static void rf433_debug_reset(const char *reason, uint16_t high, uint16_t low)
{
RF433_DETAIL_LOG("[RF433 RESET] %s bits=%d high=%d low=%d data=0x%06X T=%d win=%d lost=%d\r\n",
@@ -211,7 +184,6 @@ void rf433_decoder_init(void)
rf433_decode_reset();
rf433_repair_reset();
}
void rf433_decoder_sample(uint8_t level)
@@ -337,23 +309,6 @@ static void rf433_update_t_by_bit(uint16_t high, uint16_t low, uint8_t bit)
rf433_update_range_by_t(t_filter);
}
static uint16_t rf433_get_glitch_max(void)
{
uint16_t v = s_dec.t / 2u;
if (v < RF433_GLITCH_DYNAMIC_MIN)
{
v = RF433_GLITCH_DYNAMIC_MIN;
}
if (v > RF433_GLITCH_DYNAMIC_MAX)
{
v = RF433_GLITCH_DYNAMIC_MAX;
}
return v;
}
static bool rf433_is_short(uint16_t width)
{
return ((width >= s_dec.short_min) && (width <= s_dec.short_max));
@@ -486,7 +441,7 @@ static void rf433_update_window_by_score(uint8_t score)
rf433_update_range_by_t(s_dec.t);
}
static void rf433_output_code(uint32_t code)
static void rf433_output_code(uint32_t code, uint8_t required_count)
{
if (code == s_dec.last_code)
{
@@ -506,9 +461,9 @@ static void rf433_output_code(uint32_t code)
RF433_DETAIL_LOG("[RF433 REPEAT] code=0x%06X same=%d/%d\r\n",
(unsigned int)code,
s_dec.same_cnt,
RF433_REPEAT_CONFIRM);
required_count);
if (s_dec.same_cnt >= RF433_REPEAT_CONFIRM)
if (s_dec.same_cnt >= required_count)
{
s_dec.frame.code = code;
s_dec.frame.bit_len = RF433_BIT_LEN;
@@ -545,7 +500,6 @@ static void rf433_process_clean_pulse(Rf433Pulse_t pulse)
{
rf433_debug_reset("timeout", s_dec.last_high, pulse.width);
rf433_decode_reset();
rf433_repair_reset();
return;
}
@@ -631,9 +585,13 @@ static void rf433_process_clean_pulse(Rf433Pulse_t pulse)
(unsigned int)((s_dec.data >> 8) & 0xFFu),
(unsigned int)(s_dec.data & 0xFFu));
if (s_dec.frame_score >= RF433_FRAME_SCORE_MIN)
if (s_dec.frame_score >= RF433_FRAME_SCORE_DIRECT_MIN)
{
rf433_output_code(s_dec.data);
rf433_output_code(s_dec.data, RF433_DIRECT_CONFIRM);
}
else if (s_dec.frame_score >= RF433_FRAME_SCORE_WEAK_MIN)
{
rf433_output_code(s_dec.data, RF433_WEAK_CONFIRM);
}
else
{
@@ -643,7 +601,6 @@ static void rf433_process_clean_pulse(Rf433Pulse_t pulse)
}
rf433_decode_reset();
rf433_repair_reset();
}
}
else
@@ -664,96 +621,9 @@ static void rf433_process_clean_pulse(Rf433Pulse_t pulse)
#endif
rf433_debug_reset("bit", s_dec.last_high, s_dec.last_low);
rf433_decode_reset();
rf433_repair_reset();
}
}
static bool rf433_can_merge_glitch(Rf433Pulse_t a, Rf433Pulse_t b, Rf433Pulse_t c)
{
if (a.level != c.level)
{
return false;
}
if (b.width > rf433_get_glitch_max())
{
return false;
}
if (a.width == 0u || c.width == 0u)
{
return false;
}
return true;
}
static void rf433_repair_input_pulse(Rf433Pulse_t pulse)
{
Rf433Pulse_t merged;
Rf433Pulse_t out;
RF433_PULSE_LOG("[RF433 RAW] L=%d W=%d\r\n", pulse.level, pulse.width);
if (pulse.width == 0u)
{
return;
}
if (pulse.width > RF433_LEVEL_TIMEOUT)
{
rf433_debug_reset("timeout", s_dec.last_high, pulse.width);
rf433_decode_reset();
rf433_repair_reset();
return;
}
if (s_repair.cnt == 0u)
{
s_repair.p0 = pulse;
s_repair.cnt = 1u;
return;
}
if (s_repair.cnt == 1u)
{
s_repair.p1 = pulse;
s_repair.cnt = 2u;
return;
}
s_repair.p2 = pulse;
if (rf433_can_merge_glitch(s_repair.p0, s_repair.p1, s_repair.p2))
{
merged.level = s_repair.p0.level;
merged.width = (uint16_t)(s_repair.p0.width +
s_repair.p1.width +
s_repair.p2.width);
RF433_PULSE_LOG("[RF433 MERGE] %d:%d + %d:%d + %d:%d => %d:%d\r\n",
s_repair.p0.level,
s_repair.p0.width,
s_repair.p1.level,
s_repair.p1.width,
s_repair.p2.level,
s_repair.p2.width,
merged.level,
merged.width);
s_repair.p0 = merged;
s_repair.cnt = 1u;
return;
}
out = s_repair.p0;
RF433_PULSE_LOG("[RF433 CLEAN] L=%d W=%d\r\n", out.level, out.width);
rf433_process_clean_pulse(out);
s_repair.p0 = s_repair.p1;
s_repair.p1 = s_repair.p2;
s_repair.cnt = 2u;
}
void rf433_decoder_process(void)
{
Rf433Pulse_t pulse;
@@ -764,7 +634,7 @@ void rf433_decoder_process(void)
while ((cnt < RF433_PROCESS_MAX_ONCE) && rf433_fifo_pop(&pulse))
{
rf433_repair_input_pulse(pulse);
rf433_process_clean_pulse(pulse);
cnt++;
}
}