diff options
Diffstat (limited to 'host/lib/usrp/b200/b200_impl.cpp')
| -rw-r--r-- | host/lib/usrp/b200/b200_impl.cpp | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/host/lib/usrp/b200/b200_impl.cpp b/host/lib/usrp/b200/b200_impl.cpp index 273153c16..84153309e 100644 --- a/host/lib/usrp/b200/b200_impl.cpp +++ b/host/lib/usrp/b200/b200_impl.cpp @@ -266,16 +266,30 @@ b200_impl::b200_impl(const device_addr_t &device_addr) : _b200_type = B200; } - //set up frontend mapping + //////////////////////////////////////////////////////////////////// + // Set up frontend mapping + //////////////////////////////////////////////////////////////////// + // Explanation: The AD9361 has 2 frontends, FE1 and FE2. + // On the B210 FE1 maps to the B-side (or radio 1), and FE2 maps + // to the A-side (or radio 0). So, logically, the radios are swapped + // between the host side and the AD9361-side. + // B200 is more complicated: On Revs <= 4, the A-side is connected, + // which means FE2 is used (like B210). On Revs >= 5, the left side + // ("B-side") is connected, because these revs use an AD9364, which + // does not have an FE2, so we don't swap FEs. + + // Swapped setup: _fe1 = 1; _fe2 = 0; + _gpio_state.swap_atr = 1; + // Unswapped setup: if (_b200_type == B200 and not mb_eeprom["revision"].empty() and boost::lexical_cast<size_t>(mb_eeprom["revision"]) >= 5) { _fe1 = 0; //map radio0 to FE1 _fe2 = 1; //map radio1 to FE2 - _gpio_state.atr_sel = 1; //map radio0 ATR pins to FE2 + _gpio_state.swap_atr = 0; //map radio0 ATR pins to FE2 } //////////////////////////////////////////////////////////////////// @@ -916,7 +930,7 @@ void b200_impl::update_bandsel(const std::string& which, double freq) void b200_impl::update_gpio_state(void) { const boost::uint32_t misc_word = 0 - | (_gpio_state.atr_sel << 8) + | (_gpio_state.swap_atr << 8) | (_gpio_state.tx_bandsel_a << 7) | (_gpio_state.tx_bandsel_b << 6) | (_gpio_state.rx_bandsel_a << 5) |