BRNSystems/brnQuanFW
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 2 Wiki Activity

Fix the RX buzzing problem after reboot

Browse Source
This commit is contained in:
Krzysiek Egzmont
2023-10-27 10:53:22 +02:00
parent e6ac0d1d8d
commit b12244e352
1 changed files with 0 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
driver/bk4819.c
View File

@@ -234,26 +234,6 @@ void BK4819_WriteU16(uint16_t Data)
void BK4819_DisableAGC()
{
// REG_7E
//
// <15> 0 AGC Fix Mode.
// 1=Fix; 0=Auto.
//
// <14:12> 0b011 AGC Fix Index.
// 011=Max, then 010,001,000,111,110,101,100(min).
//
// <5:3> 0b101 DC Filter Band Width for Tx (MIC In).
// 000=Bypass DC filter;
//
// <2:0> 0b110 DC Filter Band Width for Rx (IF In).
// 000=Bypass DC filter;
//
BK4819_WriteRegister(0x7E,
(1u << 15) | // 0 AGC fix mode
(3u << 12) | // 3 AGC fix index
(5u << 3) | // 5 DC Filter band width for Tx (MIC In)
(6u << 0)); // 6 DC Filter band width for Rx (I.F In)
// REG_10
//
// 0x0038 Rx AGC Gain Table[0]. (Index Max->Min is 3,2,1,0,-1)
@@ -305,32 +285,6 @@ void BK4819_DisableAGC()
void BK4819_EnableAGC()
{
// TODO: See if this attenuates overloading
// signals as well as boosting weak ones
//
// REG_7E
//
// <15> 0 AGC Fix Mode.
// 1=Fix; 0=Auto.
//
// <14:12> 0b011 AGC Fix Index.
// 011=Max, then 010,001,000,111,110,101,100(min).
//
// <5:3> 0b101 DC Filter Band Width for Tx (MIC In).
// 000=Bypass DC filter;
//
// <2:0> 0b110 DC Filter Band Width for Rx (IF In).
// 000=Bypass DC filter;
// default fix index too strong, set to min (011->100)
//BK4819_WriteRegister(0x7E, (1u << 15) | (4u << 12) | (5u << 3) | (6u << 0));
BK4819_WriteRegister(0x7E,
(0u << 15) | // 0 AGC fix mode
(3u << 12) | // 3 AGC fix index
(5u << 3) | // 5 DC Filter band width for Tx (MIC In)
(6u << 0)); // 6 DC Filter band width for Rx (I.F In)
// REG_10
//
// 0x0038 Rx AGC Gain Table[0]. (Index Max->Min is 3,2,1,0,-1)