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] 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(-)

diff --git a/firmware/sgpio-rx/sgpio-rx.c b/firmware/sgpio-rx/sgpio-rx.c
index dbee1d3f..4993a7c3 100644
--- a/firmware/sgpio-rx/sgpio-rx.c
+++ b/firmware/sgpio-rx/sgpio-rx.c
@@ -69,8 +69,8 @@ void rx_test() {
         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;