From 32a96e580d411ba2fec03f7f07f4a46412fb27ca Mon Sep 17 00:00:00 2001
From: Andrea Santaniello <lupetto@insicuri.net>
Date: Fri, 17 Apr 2026 17:34:55 +0200
Subject: [PATCH] Update psa.c

---
 lib/subghz/protocols/psa.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/subghz/protocols/psa.c b/lib/subghz/protocols/psa.c
index 34b30a89..79e71341 100644
--- a/lib/subghz/protocols/psa.c
+++ b/lib/subghz/protocols/psa.c
@@ -1069,6 +1069,8 @@ void subghz_protocol_decoder_psa_feed(void* context, bool level, uint32_t durati
                                  &instance->manchester_state,
                                  &decoded_bit)) {
                 uint32_t carry = (instance->decode_data_low >> 31) & 1;
+                // PSA AM uses inverted Manchester convention
+                decoded_bit = !decoded_bit;
                 instance->decode_data_low = (instance->decode_data_low << 1) | (decoded_bit ? 1 : 0);
                 instance->decode_data_high = (instance->decode_data_high << 1) | carry;
                 instance->decode_count_bit++;