diff options
Diffstat (limited to 'host/lib/usrp/common/ad9361_driver/ad9361_device.cpp')
| -rw-r--r-- | host/lib/usrp/common/ad9361_driver/ad9361_device.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp index 3abcdc157..7e574920a 100644 --- a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp +++ b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp @@ -1872,10 +1872,10 @@ double ad9361_device_t::set_gain(direction_t direction, chain_t chain, const dou gain_index = 0; if (chain == CHAIN_1) { - _rx1_gain = boost::uint32_t(value); + _rx1_gain = value; _io_iface->poke8(0x109, gain_index); } else { - _rx2_gain = boost::uint32_t(value); + _rx2_gain = value; _io_iface->poke8(0x10c, gain_index); } @@ -1888,15 +1888,19 @@ double ad9361_device_t::set_gain(direction_t direction, chain_t chain, const dou /* Each gain step is -0.25dB. Calculate the attenuation necessary * for the requested gain, convert it into gain steps, then write - * the attenuation word. Max gain (so zero attenuation) is 89.75. */ + * the attenuation word. Max gain (so zero attenuation) is 89.75. + * Ugly values will be written to the attenuation registers if + * "value" is out of bounds, so range checking must be performed + * outside this function. + */ double atten = AD9361_MAX_GAIN - value; boost::uint32_t attenreg = boost::uint32_t(atten * 4); if (chain == CHAIN_1) { - _tx1_gain = boost::uint32_t(value); + _tx1_gain = value; _io_iface->poke8(0x073, attenreg & 0xFF); _io_iface->poke8(0x074, (attenreg >> 8) & 0x01); } else { - _tx2_gain = boost::uint32_t(value); + _tx2_gain = value; _io_iface->poke8(0x075, attenreg & 0xFF); _io_iface->poke8(0x076, (attenreg >> 8) & 0x01); } |