From 722202c477817732716c29f00b37f754b7abf3a6 Mon Sep 17 00:00:00 2001
From: Bernhard Tittelbach <xro@realraum.at>
Date: Fri, 22 Jun 2012 02:19:00 +0000
Subject: rx detect works, still receiving mostly noise

git-svn-id: https://svn.spreadspace.org/mur.sat@550 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/hhd70dongle/hhd70.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'software/hhd70dongle/hhd70.c')

diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c
index 6b2ce5f..9b79797 100644
--- a/software/hhd70dongle/hhd70.c
+++ b/software/hhd70dongle/hhd70.c
@@ -37,7 +37,7 @@ void hhd70_init(void)
 {
     //configure Direction of SS / PB0 , MOSI and SCLK as Output to drive CS of CC1101
     SPI_DDR = (1<<MOSI)|(1<<SCK)|(1<<CS)|(1<<RE)|(1<<TE);
-    SPI_PORT = (1<<CS) | (1<<RE) | (1<<TE);        
+    SPI_PORT = (1<<CS) | (1<<RE) | (1<<TE) | (1<<GDO2);
     SPCR = (1<<SPE)|(1<<MSTR); // | (0<<DORD)  //select MSB first: DORD == 0
     // SPSR = (0<<SPI2X) // f_osc/4
     // SPSR = (1<<SPI2X) // f_osc/2
@@ -107,5 +107,6 @@ void hhd70_palna_off(void)
 
 int8_t hhd70_rx_data_available(void)
 {
-    return SPI_PINB_REG & (1 << GDO2);
+    //check if GDO2 pin has been pulled low by c1101
+    return (SPI_PINB_REG & (1 << GDO2)) == 0;
 }
\ No newline at end of file
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