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Limit screen update rate in AM fixer

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This commit is contained in:
OneOfEleven 2023-09-26 11:41:10 +01:00
parent 8acbfbc80d
commit 9d178c549a
6 changed files with 64 additions and 28 deletions
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77
am_fix.c
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@ -296,6 +296,10 @@ const uint8_t orig_pga = 6; // -3dB
#endif
unsigned int counter = 0;
int16_t orig_dB_gain = -17;
#ifdef ENABLE_AM_FIX_TEST1
unsigned int am_fix_gain_table_index[2] = {1 + gSetting_AM_fix_test1, 1 + gSetting_AM_fix_test1};
#else
@ -317,26 +321,23 @@ const uint8_t orig_pga = 6; // -3dB
// used to limit the max front end gain
unsigned int max_index = ARRAY_SIZE(am_fix_gain_table) - 1;
void AM_fix_reset(const int vfo)
{ // reset the AM fixer
prev_rssi[vfo] = 0;
am_gain_hold_counter[vfo] = 0;
rssi_db_gain_diff[vfo] = 0;
#ifdef ENABLE_AM_FIX_TEST1
am_fix_gain_table_index[vfo] = 1 + gSetting_AM_fix_test1;
#else
am_fix_gain_table_index[vfo] = original_index; // re-start with original QS setting
#endif
am_fix_gain_table_index_prev[vfo] = 0;
void AM_fix_init(void)
{
/* unsigned int i;
for (i = 0; i < 2; i++)
{
#ifdef ENABLE_AM_FIX_TEST1
am_fix_gain_table_index[i] = 1 + gSetting_AM_fix_test1;
#else
am_fix_gain_table_index[i] = original_index; // re-start with original QS setting
#endif
}
*/
orig_dB_gain = lna_short_dB[orig_lna_short] + lna_dB[orig_lna] + mixer_dB[orig_mixer] + pga_dB[orig_pga];
#if 0
{ // set the maximum gain we want to use
// const int16_t max_gain_dB = lna_short_dB[orig_lna_short] + lna_dB[orig_lna] + mixer_dB[orig_mixer] + pga_dB[orig_pga];
// const int16_t max_gain_dB = orig_dB_gain;
const int16_t max_gain_dB = -10;
max_index = ARRAY_SIZE(am_fix_gain_table);
while (--max_index > 1)
@ -355,6 +356,26 @@ const uint8_t orig_pga = 6; // -3dB
#endif
}
void AM_fix_reset(const int vfo)
{ // reset the AM fixer
prev_rssi[vfo] = 0;
am_gain_hold_counter[vfo] = 0;
rssi_db_gain_diff[vfo] = 0;
#ifdef ENABLE_AM_FIX_TEST1
am_fix_gain_table_index[vfo] = 1 + gSetting_AM_fix_test1;
#else
am_fix_gain_table_index[vfo] = original_index; // re-start with original QS setting
#endif
am_fix_gain_table_index_prev[vfo] = 0;
// AM_fix_init(); // bootup calls this
}
// adjust the RX RF gain to try and prevent the AM demodulator from
// saturating/overloading/clipping (distorted AM audio)
//
@ -372,6 +393,8 @@ const uint8_t orig_pga = 6; // -3dB
const int16_t desired_rssi = (-89 + 160) * 2; // dBm to ADC sample
#endif
counter++;
// but we're not in FM mode, we're in AM mode
switch (gCurrentFunction)
@ -404,7 +427,7 @@ const uint8_t orig_pga = 6; // -3dB
if (gCurrentRSSI[vfo] != new_rssi)
{
gCurrentRSSI[vfo] = new_rssi;
gUpdateDisplay = true;
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
}
}
@ -501,20 +524,18 @@ const uint8_t orig_pga = 6; // -3dB
const unsigned int index = am_fix_gain_table_index[vfo];
const uint8_t lna_short = am_fix_gain_table[index].lna_short;
const uint8_t lna = am_fix_gain_table[index].lna;
const uint8_t mixer = am_fix_gain_table[index].mixer;
const uint8_t pga = am_fix_gain_table[index].pga;
const int16_t orig_dB_gain = lna_short_dB[orig_lna_short] + lna_dB[orig_lna] + mixer_dB[orig_mixer] + pga_dB[orig_pga];
const int16_t am_dB_gain = lna_short_dB[lna_short] + lna_dB[lna] + mixer_dB[mixer] + pga_dB[pga];
const uint8_t lna_short = am_fix_gain_table[index].lna_short;
const uint8_t lna = am_fix_gain_table[index].lna;
const uint8_t mixer = am_fix_gain_table[index].mixer;
const uint8_t pga = am_fix_gain_table[index].pga;
const int16_t gain_dB = lna_short_dB[lna_short] + lna_dB[lna] + mixer_dB[mixer] + pga_dB[pga];
BK4819_WriteRegister(BK4819_REG_13, (lna_short << 8) | (lna << 5) | (mixer << 3) | (pga << 0));
// offset the RSSI reading to the rest of the firmware to cancel out the gain adjustments we make
// gain difference from original QS setting
rssi_db_gain_diff[vfo] = am_dB_gain - orig_dB_gain;
rssi_db_gain_diff[vfo] = gain_dB - orig_dB_gain;
// remember the new table index
am_fix_gain_table_index_prev[vfo] = index;
@ -524,13 +545,13 @@ const uint8_t orig_pga = 6; // -3dB
if (gCurrentRSSI[vfo] != new_rssi)
{
gCurrentRSSI[vfo] = new_rssi;
gUpdateDisplay = true;
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
}
}
}
#ifdef ENABLE_AM_FIX_SHOW_DATA
gUpdateDisplay = true;
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
#endif
}

1
am_fix.h
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@ -28,6 +28,7 @@ extern const uint8_t orig_pga;
#ifdef ENABLE_AM_FIX
extern int16_t rssi_db_gain_diff[2];
void AM_fix_init(void);
void AM_fix_reset(const int vfo);
void AM_fix_adjust_frontEnd_10ms(const int vfo);
#ifdef ENABLE_AM_FIX_SHOW_DATA

BIN
firmware.bin
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firmware.packed.bin
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7
main.c
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@ -17,6 +17,9 @@
#include <string.h>
#include <stdio.h> // NULL
#ifdef ENABLE_AM_FIX
#include "am_fix.h"
#endif
#include "app/app.h"
#include "app/dtmf.h"
#include "audio.h"
@ -94,6 +97,10 @@ void Main(void)
BATTERY_GetReadings(false);
#ifdef ENABLE_AM_FIX
AM_fix_init();
#endif
// count the number of menu list items
gMenuListCount = 0;
while (MenuList[gMenuListCount].name[0] != '\0')

7
utils/clean.bat
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@ -1,4 +1,5 @@
@echo off
del /S /Q *.~*
del /S /Q *.map
del /S /Q *.tds
@ -10,8 +11,14 @@ del /S /Q *.ilf
del /S /Q *.ils
del /S /Q *.dcu
del /S /Q *.dsk
rd /S /Q Debug
rd /S /Q Release
rd /S /Q ipch
del /S gain_table.c
del /S uv-k5_small.c
del /S uv-k5_small_bold.c
::pause
@echo on