From 126444c564d30d65116be5f772bdf47594d62884 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Thu, 10 Jun 2010 10:10:05 -0700
Subject: Moved mux calculations into dsp type1 utils.

Fixed error in db basic freq range switcheroo.
---
 host/lib/usrp/dsp_utils.hpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'host/lib/usrp/dsp_utils.hpp')

diff --git a/host/lib/usrp/dsp_utils.hpp b/host/lib/usrp/dsp_utils.hpp
index cfe5375f8..e0ec46184 100644
--- a/host/lib/usrp/dsp_utils.hpp
+++ b/host/lib/usrp/dsp_utils.hpp
@@ -31,6 +31,41 @@ namespace dsp_type1{
         return std::ceil(std::log(num)/std::log(T(2)));
     }
 
+    /*!
+     * Calculate the rx mux word from properties.
+     * \param is_quadrature true if the subdev is complex
+     * \param is_iq_swapped true if the i and q are reversed
+     * \param the 32-bit rx mux control word
+     */
+    static inline boost::uint32_t calc_rx_mux_word(
+        bool is_quadrature,
+        bool is_iq_swapped
+    ){
+        boost::uint32_t rx_mux = 0;
+        if (is_quadrature){
+            rx_mux = (0x01 << 2) | (0x00 << 0); //Q=ADC1, I=ADC0
+        }else{
+            rx_mux = (0x11 << 2) | (0x00 << 0); //Q=ZERO, I=ADC0
+        }
+        if (is_iq_swapped){
+            rx_mux = (rx_mux << 2) | (rx_mux >> 2);
+        }
+        return rx_mux;
+    }
+
+    /*!
+     * Calculate the tx mux word from properties.
+     * \param is_iq_swapped true if the i and q are reversed
+     * \param the 32-bit tx mux control word
+     */
+    static inline boost::uint32_t calc_tx_mux_word(bool is_iq_swapped){
+        boost::uint32_t tx_mux = 0x10;
+        if (is_iq_swapped){
+            tx_mux = (tx_mux << 4) | (tx_mux >> 4);
+        }
+        return tx_mux;
+    }
+
     /*!
      * Calculate the cordic word from the frequency and clock rate.
      * The frequency will be set to the actual (possible) frequency.
-- 
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