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Adjust AGC to work with high decimations

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This commit is contained in:
Jan Hamal Dvořák 2024-02-26 12:29:49 +01:00
parent cf494d2a4d
commit 524326faf5
Signed by: mordae
GPG key ID: 1782BCC23EE007B9
1 changed files with 4 additions and 4 deletions
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8
src/main.c
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@ -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);