diff options
Diffstat (limited to 'apps/osmocomBB/osmocomBB/include/layer1/afc.h')
| -rw-r--r-- | apps/osmocomBB/osmocomBB/include/layer1/afc.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/apps/osmocomBB/osmocomBB/include/layer1/afc.h b/apps/osmocomBB/osmocomBB/include/layer1/afc.h new file mode 100644 index 0000000000..8b43f8aa85 --- /dev/null +++ b/apps/osmocomBB/osmocomBB/include/layer1/afc.h @@ -0,0 +1,18 @@ +#ifndef _L1_AFC_H +#define _L1_AFC_H + +#define AFC_SNR_THRESHOLD 2560 /* 2.5 dB in fx6.10 */ + +/* Input a frequency error sample into the AFC averaging */ +void afc_input(int32_t freq_error, uint16_t arfcn, int valid); + +/* Update the AFC with a frequency error, bypassing averaging */ +void afc_correct(int16_t freq_error, uint16_t arfcn); + +/* Update DSP with new AFC DAC value to be used for next TDMA frame */ +void afc_load_dsp(void); + +/* Reset the AFC to its initial DAC value */ +void afc_reset(void); + +#endif |