Merge branch 'mmajoral-fix_stop_FPGA_receiver' into next

src/algorithms/acquisition/adapters/galileo_e1_pcps_ambiguous_acquisition_fpga.cc

@@ -189,8 +189,8 @@ GalileoE1PcpsAmbiguousAcquisitionFpga::GalileoE1PcpsAmbiguousAcquisitionFpga(
 
 void GalileoE1PcpsAmbiguousAcquisitionFpga::stop_acquisition()
 {
-    // this command causes the SW to reset the HW.
-    acquisition_fpga_->reset_acquisition();
+    // stop the acquisition and the other FPGA modules.
+    acquisition_fpga_->stop_acquisition();
 }
 
 

src/algorithms/acquisition/adapters/galileo_e5a_pcps_acquisition_fpga.cc

@@ -192,8 +192,8 @@ GalileoE5aPcpsAcquisitionFpga::GalileoE5aPcpsAcquisitionFpga(
 
 void GalileoE5aPcpsAcquisitionFpga::stop_acquisition()
 {
-    // this command causes the SW to reset the HW.
-    acquisition_fpga_->reset_acquisition();
+    // stop the acquisition and the other FPGA modules.
+    acquisition_fpga_->stop_acquisition();
 }
 
 

src/algorithms/acquisition/adapters/gps_l1_ca_pcps_acquisition_fpga.cc

@@ -168,8 +168,8 @@ GpsL1CaPcpsAcquisitionFpga::GpsL1CaPcpsAcquisitionFpga(
 
 void GpsL1CaPcpsAcquisitionFpga::stop_acquisition()
 {
-    // this command causes the SW to reset the HW.
-    acquisition_fpga_->reset_acquisition();
+    // stop the acquisition and the other FPGA modules.
+    acquisition_fpga_->stop_acquisition();
 }
 
 

src/algorithms/acquisition/adapters/gps_l2_m_pcps_acquisition_fpga.cc

@@ -158,6 +158,8 @@ GpsL2MPcpsAcquisitionFpga::GpsL2MPcpsAcquisitionFpga(
 
 void GpsL2MPcpsAcquisitionFpga::stop_acquisition()
 {
+    // stop the acquisition and the other FPGA modules.
+    acquisition_fpga_->stop_acquisition();
 }
 
 

src/algorithms/acquisition/adapters/gps_l5i_pcps_acquisition_fpga.cc

@@ -170,8 +170,8 @@ GpsL5iPcpsAcquisitionFpga::GpsL5iPcpsAcquisitionFpga(
 
 void GpsL5iPcpsAcquisitionFpga::stop_acquisition()
 {
-    // this command causes the SW to reset the HW.
-    acquisition_fpga_->reset_acquisition();
+    // stop the acquisition and the other FPGA modules.
+    acquisition_fpga_->stop_acquisition();
 }
 
 

src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.cc

@@ -301,3 +301,11 @@ void pcps_acquisition_fpga::reset_acquisition()
     d_acquisition_fpga->reset_acquisition();
     d_acquisition_fpga->close_device();
 }
+
+void pcps_acquisition_fpga::stop_acquisition()
+{
+    // this function stops the acquisition and the other FPGA Modules.
+    d_acquisition_fpga->open_device();
+    d_acquisition_fpga->stop_acquisition();
+    d_acquisition_fpga->close_device();
+}

src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition_fpga.h

@@ -189,6 +189,11 @@ public:
      */
     void reset_acquisition();
 
+    /*!
+     * \brief stop the acquisition and the other FPGA modules.
+     */
+    void stop_acquisition();
+
 private:
     friend pcps_acquisition_fpga_sptr pcps_make_acquisition_fpga(pcpsconf_fpga_t conf_);
     explicit pcps_acquisition_fpga(pcpsconf_fpga_t conf_);

src/algorithms/acquisition/libs/fpga_acquisition.cc

@@ -240,11 +240,15 @@ void Fpga_Acquisition::close_device()
 
 void Fpga_Acquisition::reset_acquisition()
 {
-    // printf("============ resetting the hw now from the acquisition ===============");
-    d_map_base[8] = RESET_ACQUISITION;  // writing a 2 to d_map_base[8] resets the acquisition. This causes a reset of all
+    d_map_base[8] = RESET_ACQUISITION;  // setting bit 2 of d_map_base[8] resets the acquisition. This causes a reset of all
                                         // the FPGA HW modules including the multicorrelators
 }
 
+void Fpga_Acquisition::stop_acquisition()
+{
+    d_map_base[8] = STOP_ACQUISITION;  // setting bit 3 of d_map_base[8] stops the acquisition module. This stops all
+                                       // the FPGA HW modules including the multicorrelators
+}
 
 // this function is only used for the unit tests
 void Fpga_Acquisition::read_fpga_total_scale_factor(uint32_t *total_scale_factor, uint32_t *fw_scale_factor)

src/algorithms/acquisition/libs/fpga_acquisition.h

@@ -105,6 +105,11 @@ public:
      */
     void reset_acquisition();
 
+    /*!
+     * \brief stop the acquisition and the FPGA modules.
+     */
+    void stop_acquisition();
+
     /*!
      * \brief Read the scaling factor that has been used by the FFT-IFFT
      */
@@ -138,8 +143,9 @@ public:
 private:
     // FPGA register parameters
     static const uint32_t PAGE_SIZE_DEFAULT = 0x10000;            // default page size for the multicorrelator memory map
-    static const uint32_t RESET_ACQUISITION = 2;                  // command to reset the multicorrelator
-    static const uint32_t LAUNCH_ACQUISITION = 1;                 // command to launch the multicorrelator
+    static const uint32_t LAUNCH_ACQUISITION = 1;                 // command to launch the acquisition process
+    static const uint32_t RESET_ACQUISITION = 2;                  // command to reset the acquisition and the FPGA Modules
+    static const uint32_t STOP_ACQUISITION = 4;                   // command to stop the acquisition and the FPGA modules
     static const uint32_t TEST_REG_SANITY_CHECK = 0x55AA;         // value to check the presence of the test register (to detect the hw)
     static const uint32_t LOCAL_CODE_CLEAR_MEM = 0x10000000;      // command to clear the internal memory of the multicorrelator
     static const uint32_t MEM_LOCAL_CODE_WR_ENABLE = 0x0C000000;  // command to enable the ENA and WR pins of the internal memory of the multicorrelator