diff options
Diffstat (limited to 'libloragw/src/loragw_hal.c')
| -rw-r--r-- | libloragw/src/loragw_hal.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/libloragw/src/loragw_hal.c b/libloragw/src/loragw_hal.c index d77c693..c723be9 100644 --- a/libloragw/src/loragw_hal.c +++ b/libloragw/src/loragw_hal.c @@ -135,6 +135,7 @@ static uint64_t fsk_sync_word= 0xC194C1; /* default FSK sync word (ALIGNED RIGHT static bool lorawan_public = false; static uint8_t rf_clkout = 0; +static uint8_t max_tx_power = 32; /* default uncalibrated max tx power */ static struct lgw_tx_gain_lut_s txgain_lut = { .size = 2, @@ -423,8 +424,12 @@ int lgw_board_setconf(struct lgw_conf_board_s conf) { /* set internal config according to parameters */ lorawan_public = conf.lorawan_public; rf_clkout = conf.clksrc; - - DEBUG_PRINTF("Note: board configuration; lorawan_public:%d, clksrc:%d\n", lorawan_public, rf_clkout); + if (fpga_supports_attenuator()) { + max_tx_power = conf.max_tx_power; + DEBUG_PRINTF("Note: board configuration; lorawan_public:%d, clksrc:%d, max_tx_power:%d\n", lorawan_public, rf_clkout, max_tx_power); + } else { + DEBUG_PRINTF("Note: board configuration; lorawan_public:%d, clksrc:%d \n", lorawan_public, rf_clkout); + } return LGW_HAL_SUCCESS; } @@ -1414,27 +1419,30 @@ int lgw_send(struct lgw_pkt_tx_s pkt_data) { /* interpretation of TX power */ - if (read_fpga_version() == 32) { - for (pow_index = 0; pow_index < txgain_lut.size-1; pow_index++) { - if (txgain_lut.lut[pow_index].rf_power >= pkt_data.rf_power) { - x = lgw_set_attenuation((float)(txgain_lut.lut[pow_index].rf_power - pkt_data.rf_power)); - if (x != LGW_HAL_SUCCESS) { - DEBUG_MSG("ERROR: Failed to set attenuation value\n"); - return LGW_HAL_ERROR; - } - break; - } + if (fpga_supports_attenuator()) { + /* Power is set to max and the attenuator brings down the level to match the packet's request */ + target_mix_gain = 15; /* Mixer gain is not used for setting power*/ + lgw_reg_w(LGW_TX_GAIN, 0); /* Dig gain is not used for setting power */ + uint8_t attn = (uint8_t)(max_tx_power - pkt_data.rf_power); + x = lgw_set_attenuation(&attn); + if (x != LGW_HAL_SUCCESS) { + DEBUG_MSG("ERROR: Failed to set attenuation value\n"); + return LGW_HAL_ERROR; } } else { + /* Power is matched from the txgain_lut */ for (pow_index = txgain_lut.size-1; pow_index > 0; pow_index--) { if (txgain_lut.lut[pow_index].rf_power <= pkt_data.rf_power) { break; } } + + /* loading TX imbalance correction */ + target_mix_gain = txgain_lut.lut[pow_index].mix_gain; + /* Set digital gain from LUT */ + lgw_reg_w(LGW_TX_GAIN, txgain_lut.lut[pow_index].dig_gain); } - /* loading TX imbalance correction */ - target_mix_gain = txgain_lut.lut[pow_index].mix_gain; if (pkt_data.rf_chain == 0) { /* use radio A calibration table */ lgw_reg_w(LGW_TX_OFFSET_I, cal_offset_a_i[target_mix_gain - 8]); lgw_reg_w(LGW_TX_OFFSET_Q, cal_offset_a_q[target_mix_gain - 8]); @@ -1443,9 +1451,6 @@ int lgw_send(struct lgw_pkt_tx_s pkt_data) { lgw_reg_w(LGW_TX_OFFSET_Q, cal_offset_b_q[target_mix_gain - 8]); } - /* Set digital gain from LUT */ - lgw_reg_w(LGW_TX_GAIN, txgain_lut.lut[pow_index].dig_gain); - /* fixed metadata, useful payload and misc metadata compositing */ transfer_size = TX_METADATA_NB + pkt_data.size; /* */ payload_offset = TX_METADATA_NB; /* start the payload just after the metadata */ |