From 524326faf562e8043a7b4ef1d07e695c8a32881b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jan=20Hamal=20Dvo=C5=99=C3=A1k?= Date: Mon, 26 Feb 2024 12:29:49 +0100 Subject: [PATCH] Adjust AGC to work with high decimations --- src/main.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/main.c b/src/main.c index 85244ed..4db6232 100644 --- a/src/main.c +++ b/src/main.c @@ -570,7 +570,7 @@ static void rf_rx(void) int lpQa3 = 0; int64_t dcI = 0, dcQ = 0; - int64_t agc = 127; + int64_t agc = 0; while (true) { if (multicore_fifo_rvalid()) { @@ -654,10 +654,10 @@ static void rf_rx(void) dI = ((dI << 19) - dcI) >> 19; dQ = ((dQ << 19) - dcQ) >> 19; - dI <<= 32; - dQ <<= 32; + dI <<= 16; + dQ <<= 16; - agc -= (1 << 12) / DECIMATION * BANDWIDTH; + agc = (agc * UINT16_MAX) >> 16; if (llabs(dI) > agc) agc = llabs(dI);