From 5b6e46cef3723b804cddb6771572d2e5260b2dd7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Hamal=20Dvo=C5=99=C3=A1k?= <mordae@anilinux.org>
Date: Tue, 27 Feb 2024 20:33:07 +0100
Subject: [PATCH] Print RSSI from AGC in interactive RX mode
---
src/main.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/main.c b/src/main.c
index 436993b..821188c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -83,6 +83,7 @@ static int dma_ch_tx_cos = -1;
static queue_t iq_queue;
static int gap = 0;
+static int agc = 0;
#define PSU_PIN 23
@@ -574,7 +575,6 @@ static void rf_rx(void)
int lpQa3 = 0;
int64_t dcI = 0, dcQ = 0;
- int agc = 0;
while (true) {
if (multicore_fifo_rvalid()) {
@@ -798,10 +798,12 @@ static void do_rx(int rx_pin, int bias_pin, float freq, char mode)
fwrite(block, sizeof block, 1, stdout);
fflush(stdout);
} else {
+ float rssi = 10.0f * log10f(powf((float)agc / (float)INT_MAX, 2));
+
for (int i = 0; i < IQ_BLOCK_LEN / 2; i += 8) {
int I = block[i * 2];
int Q = block[i * 2 + 1];
- printf("%2i %12i %12i ", gap, I, Q);
+ printf("%+4i %+4.0f %12i %12i ", gap, rssi, I, Q);
plot_IQ(I, Q);
putchar('\n');
}