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From 6f9e7fdab838ab3ec0a20410c5c9d4373e6603a4 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 15 Aug 2015 10:03:12 -0700
Subject: [PATCH 49/68] Adapt code to signed samples.
Necessary due to change in CPLD to produce signed samples.
---
firmware/sgpio-rx/sgpio-rx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/firmware/sgpio-rx/sgpio-rx.c
+++ b/firmware/sgpio-rx/sgpio-rx.c
@@ -66,8 +66,8 @@
buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A);
/* find the magnitude squared */
- sigi = (buffer[i & 4095] & 0xff) - 0x80;
- sigq = ((buffer[i & 4095] >> 8) & 0xff) - 0x80;
+ sigi = buffer[i & 4095] & 0xff;
+ sigq = (buffer[i & 4095] >> 8) & 0xff;
magsq = sigi * sigq;
if ((uint16_t)magsq & 0x8000) {
magsq ^= 0xffff;
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