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Code Issues Releases Activity

mdc1200 TX param update

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OneOfEleven 2023-10-26 18:09:53 +01:00
parent 984722b924
commit 5119995b08
4 changed files with 73 additions and 11 deletions
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31
app/aircopy.c
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@ -134,6 +134,34 @@ void AIRCOPY_start_fsk_tx(const int request_block_num)
// turn the TX on
RADIO_enableTX(true);
// REG_2B 0
//
// <10> 0 AF RX HPF 300Hz filter
// 0 = enable
// 1 = disable
//
// <9> 0 AF RX LPF 3kHz filter
// 0 = enable
// 1 = disable
//
// <8> 0 AF RX de-emphasis filter
// 0 = enable
// 1 = disable
//
// <2> 0 AF TX HPF 300Hz filter
// 0 = enable
// 1 = disable
//
// <1> 0 AF TX LPF filter
// 0 = enable
// 1 = disable
//
// <0> 0 AF TX pre-emphasis filter
// 0 = enable
// 1 = disable
//
BK4819_WriteRegister(0x2B, (1u << 2) | (1u << 0)); // try to improve the TX waveform
// REG_59
//
// <15> 0 TX FIFO
@ -217,6 +245,9 @@ void AIRCOPY_stop_fsk_tx(void)
BK4819_reset_fsk();
// restore TX/RX filtering
BK4819_WriteRegister(0x2B, 0);
if (g_aircopy_state == AIRCOPY_TX)
{
g_aircopy_block_number++;

53
driver/bk4819.c
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@ -817,14 +817,14 @@ void BK4819_SetupSquelch(
// 1 = Enable
// 0 = Disable
//
// <14:8> 0 TONE1 tuning gain
// <14:8> 0 TONE1 tuning
// 0 ~ 127
//
// <7> 0 Enable TONE2
// 1 = Enable
// 0 = Disable
//
// <6:0> 0 TONE2/FSK tuning gain
// <6:0> 0 TONE2/FSK tuning
// 0 ~ 127
//
BK4819_WriteRegister(0x70, 0);
@ -1839,8 +1839,8 @@ uint8_t BK4819_GetCTCType(void)
( 0u << 15) |
( 0u << 8) |
( 1u << 7) |
// (96u << 0));
(127u << 0)); // best waveform
(96u << 0));
// (127u << 0)); // best waveform
// REG_72
//
@ -2119,7 +2119,7 @@ void BK4819_reset_fsk(void)
( 0u << 15) | // 0
( 0u << 8) | // 0
( 1u << 7) | // 1
(96u << 0)); // 96 (127 looks better)
(96u << 0)); // 96
BK4819_WriteRegister(0x72, ((1200u * 103244) + 5000) / 10000); // with rounding
@ -2187,6 +2187,9 @@ void BK4819_reset_fsk(void)
uint16_t fsk_reg59;
uint8_t packet[42];
// create the MDC1200 packet
const unsigned int size = MDC1200_encode_single_packet(packet, op, arg, id);
BK4819_ExitTxMute();
#if 1
@ -2226,6 +2229,34 @@ void BK4819_reset_fsk(void)
const uint16_t tx_dev = BK4819_ReadRegister(0x40);
// BK4819_WriteRegister(0x40, (0u << 12) | (1232 << 0)); // 000 0 010011010000
BK4819_WriteRegister(0x40, (tx_dev & 0xf000) | (1050 << 0)); // reduce the deviation a little
// REG_2B 0
//
// <10> 0 AF RX HPF 300Hz filter
// 0 = enable
// 1 = disable
//
// <9> 0 AF RX LPF 3kHz filter
// 0 = enable
// 1 = disable
//
// <8> 0 AF RX de-emphasis filter
// 0 = enable
// 1 = disable
//
// <2> 0 AF TX HPF 300Hz filter
// 0 = enable
// 1 = disable
//
// <1> 0 AF TX LPF filter
// 0 = enable
// 1 = disable
//
// <0> 0 AF TX pre-emphasis filter
// 0 = enable
// 1 = disable
//
BK4819_WriteRegister(0x2B, (1u << 2) | (1u << 0));
// *******************************************
@ -2245,9 +2276,6 @@ void BK4819_reset_fsk(void)
// *******************************************
// create the MDC1200 packet
const unsigned int size = MDC1200_encode_single_packet(packet, op, arg, id);
// MDC1200 uses 1200/1800 Hz FSK tone frequencies 1200 bits/s
//
BK4819_WriteRegister(0x58, // 0x37C3); // 001 101 11 11 00 001 1
@ -2328,9 +2356,9 @@ void BK4819_reset_fsk(void)
( 0u << 15) | // 0
( 0u << 8) | // 0
( 1u << 7) | // 1
// (96u << 0)); // 96
(127u << 0)); // 127 produces nicer waveform
(96u << 0)); // 96
// (127u << 0));
// REG_59
//
// <15> 0 TX FIFO
@ -2462,6 +2490,9 @@ void BK4819_reset_fsk(void)
// restore the original TX deviation level
BK4819_WriteRegister(0x40, tx_dev);
// restore TX/RX filtering
BK4819_WriteRegister(0x2B, 0);
// restore the CTCSS/CDCSS setting
BK4819_WriteRegister(0x51, css_val);

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