Semtech LR1121 - Page 61

LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
61 of 130
Semtech
Proprietary & Confidential
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lr11xx_radio_set_rssi_calibration( context, rssi_cal_table ); // All parrameters of
rssi_cal_table set to 0
lr11xx_radio_set_rx_with_timeout_in_rtc_step( context, 0xFFFFFF );
for( int i = 0; i++; i < 17 ) // 17 is the number of elements in gain array
{
const uint8_t gain_step = MIN( gain[i], 13 );
const uint8_t lna_boost = ( gain > 13 ) ? gain - 13 : 0;
lr11xx_regmem_write_regmem32_mask( context, 0x00F20214, 0x00F00000, gain_step << 20 );
lr11xx_regmem_write_regmem32_mask( context, 0x00F3008C, 0x00070000, lna_boost << 16 );
/* Wait for 1 ms */
/* Insert here a control for your test equipment to generate a tone at RF frequency set to
freq_in_hz with an output power set to power[i] dBm */
lr11xx_radio_get_rssi_inst( context, rssi_in_dbm );
/* Add a way to log (gain[i], power[i], rssi_in_dbm) triplet to be able to compute offset and
tunes for the RSSI calibration */
}