Merge branch 'master' into wip/burx_support

* master: (39 commits)
  Add gru.hexshort to deal with short hex constants
  Assign USB PID for Hans de Bok
  Add missing buffer allocator hint to gr_ofdm_sampler.cc
  Really fix the missing include for boost::bind
  gr-wxgui: Added additional color table entries
  Missed updates for omnithread/mblock removal
  Remove omnithreads library.
  Remove mblock library.  We hardly knew 'ye.
  Convert gr-audio-portaudio to Boost via gruel
  Further updates for removing omnithreads
  Update build configuration for OSX omnithreads changeover
  Add missing include file for boost::bind
  Convert gcell to use boost::threads instead of omnithread.
  Fix sequence error indication after stopping then restarting streaming on USRP2.
  initial move from mld_threads to gruel:: namespace threads and such
  Initial changes to remove mld_thread and instead use gruel:: namespace classes
  Fixing doxygen warnings from arb_resampler. Also, removed set_taps from public
  Fixing doxygen warnings from channelizer block.
  Fixing documentation to get rid of doxygen warnings.
  Adding documentation for fff version of othe PFB clock sync algorithm.
  ...

2 files changed, 12 insertions, 6 deletions

diff --git a/usrp2/firmware/lib/adf4350.c b/usrp2/firmware/lib/adf4350.c
index 0725c9337..dbab654ea 100644
--- a/usrp2/firmware/lib/adf4350.c
+++ b/usrp2/firmware/lib/adf4350.c
@@ -30,7 +30,7 @@
 #define MIN_VCO_FREQ U2_DOUBLE_TO_FXPT_FREQ(2.2e9)                      /* minimum vco freq */
 #define MAX_VCO_FREQ U2_DOUBLE_TO_FXPT_FREQ(4.4e9)                      /* minimum vco freq */
 #define MAX_FREQ MAX_VCO_FREQ                                           /* upper bound freq (rf div = 1) */
-#define MIN_FREQ DIV_ROUND(MIN_VCO_FREQ, MAX_RF_DIV)                    /* calculated lower bound freq */
+#define MIN_FREQ U2_DOUBLE_TO_FXPT_FREQ(68.75e6)                        /* lower bound freq (rf div = 16) */
 
 u2_fxpt_freq_t adf4350_get_max_freq(void){
 	return MAX_FREQ;
@@ -170,7 +170,7 @@ bool adf4350_set_freq(u2_fxpt_freq_t freq, struct db_base *dbb){
 	adf4350_load_register(2, dbb);
 	adf4350_load_register(4, dbb);
 	adf4350_load_register(0, dbb); /* register 0 must be last */
-	return true;
+	return adf4350_get_locked(dbb);
 }
 
 u2_fxpt_freq_t adf4350_get_freq(struct db_base *dbb){
diff --git a/usrp2/firmware/lib/db_wbxng.c b/usrp2/firmware/lib/db_wbxng.c
index 115ac8a24..954633da2 100644
--- a/usrp2/firmware/lib/db_wbxng.c
+++ b/usrp2/firmware/lib/db_wbxng.c
@@ -29,6 +29,9 @@
 #include <stdio.h>
 #include <stdint.h>
 
+#define min(X,Y) ((X) < (Y) ? (X) : (Y))
+#define max(X,Y) ((X) > (Y) ? (X) : (Y))
+
 bool wbxng_init_rx(struct db_base *dbb);
 bool wbxng_init_tx(struct db_base *dbb);
 bool wbxng_set_freq(struct db_base *dbb, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc);
@@ -45,7 +48,7 @@ struct db_wbxng_rx db_wbxng_rx = {
   .base.is_tx = false,
   .base.output_enables = RX2_RX1N|RXBB_EN|ATTN_MASK|ENABLE_33|ENABLE_5|PLL_CE|PLL_PDBRF|ATTN_MASK,
   .base.used_pins = 0xFFFF,
-  .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(67.5e6),
+  .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(68.75e6),
   .base.freq_max = U2_DOUBLE_TO_FXPT_FREQ(2200e6),
   .base.gain_min = U2_DOUBLE_TO_FXPT_GAIN(0),
   .base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(31.5),
@@ -81,7 +84,7 @@ struct db_wbxng_tx db_wbxng_tx = {
   .base.is_tx = true,
   .base.output_enables = RX_TXN|TXMOD_EN|ENABLE_33|ENABLE_5|PLL_CE|PLL_PDBRF,
   .base.used_pins = 0xFFFF,
-  .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(67.5e6),
+  .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(68.75e6),
   .base.freq_max = U2_DOUBLE_TO_FXPT_FREQ(2200e6),
   .base.gain_min = U2_DOUBLE_TO_FXPT_GAIN(0),
   .base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(25),
@@ -149,8 +152,11 @@ wbxng_init_rx(struct db_base *dbb)
 bool
 wbxng_set_freq(struct db_base *dbb, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc)
 {
-  bool ok = adf4350_set_freq(2*freq,dbb);
-  *dc = adf4350_get_freq(dbb)/2;
+  // clamp freq
+  u2_fxpt_freq_t clamp_freq = max(dbb->freq_min, min(freq, dbb->freq_max));
+  //printf("Requested LO freq = %u", (uint32_t) ((clamp_freq >> U2_FPF_RP)/1000));
+  bool ok = adf4350_set_freq(clamp_freq<<1,dbb);
+  *dc = adf4350_get_freq(dbb)>>1;
 
   return ok;
 }