gomaomao/DIY-Multiprotocol-TX-Module
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Use cc2500 fast frequency hopping

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This commit is contained in:
Goebish 2019-05-27 21:48:24 +02:00
parent c9fecafada
commit 6257e25f56
1 changed files with 21 additions and 1 deletions
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22
Multiprotocol/MJXQ_nrf24l01.ino
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@ -87,6 +87,7 @@ extern uint8_t xn297_addr_len;
extern uint8_t xn297_tx_addr[];
extern const uint8_t xn297_scramble[];
extern const uint16_t PROGMEM xn297_crc_xorout_scrambled[];
static uint8_t fscal1[MJXQ_RF_NUM_CHANNELS];
static void __attribute__((unused)) XN297L_init()
{
@ -112,6 +113,7 @@ static void __attribute__((unused)) XN297L_init()
// Sync Word Qualifier Mode = No preamble/sync
// TX Power = 0
// Whitening = false
// Fast Frequency Hopping - no PLL auto calibration
CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x01); // Packet Automation Control
CC2500_WriteReg(CC2500_0B_FSCTRL1, 0x0A); // Frequency Synthesizer Control
@ -125,7 +127,7 @@ static void __attribute__((unused)) XN297L_init()
CC2500_WriteReg(CC2500_13_MDMCFG1, 0x23); // Modem Configuration
CC2500_WriteReg(CC2500_14_MDMCFG0, 0xA4); // Modem Configuration
CC2500_WriteReg(CC2500_15_DEVIATN, 0x62); // Modem Deviation Setting
CC2500_WriteReg(CC2500_18_MCSM0, 0x18); // Main Radio Control State Machine Configuration
CC2500_WriteReg(CC2500_18_MCSM0, 0x08); // Main Radio Control State Machine Configuration
CC2500_WriteReg(CC2500_19_FOCCFG, 0x1D); // Frequency Offset Compensation Configuration
CC2500_WriteReg(CC2500_1A_BSCFG, 0x1C); // Bit Synchronization Configuration
CC2500_WriteReg(CC2500_1B_AGCCTRL2, 0xC7); // AGC Control
@ -189,6 +191,18 @@ static void __attribute__((unused)) XN297L_WritePayload(const uint8_t* msg, uint
// transmit
CC2500_Strobe(CC2500_STX);
}
static void __attribute__((unused)) calibrate_pll()
{
//calibrate hop channels
for (uint8_t i = 0; i < MJXQ_RF_NUM_CHANNELS; i++) {
CC2500_Strobe(CC2500_SIDLE);
CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[i]*3);
CC2500_Strobe(CC2500_SCAL);
delayMicroseconds(900);
fscal1[i] = CC2500_ReadReg(CC2500_25_FSCAL1);
}
}
#endif // CC2500_INSTALLED
static uint8_t __attribute__((unused)) MJXQ_pan_tilt_value()
@ -308,6 +322,8 @@ static void __attribute__((unused)) MJXQ_send_packet(uint8_t bind)
if (sub_protocol == E010 || sub_protocol == PHOENIX) {
// spacing is 333.25 kHz, must multiply xn297 channel by 3
CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[hopping_frequency_no / 2] * 3);
// PLL calibration
CC2500_WriteReg(CC2500_25_FSCAL1, fscal1[hopping_frequency_no / 2]);
// Make sure that the radio is in IDLE state before flushing the FIFO
CC2500_Strobe(CC2500_SIDLE);
// Flush TX FIFO
@ -364,6 +380,7 @@ static void __attribute__((unused)) MJXQ_init()
CC2500_WriteReg(CC2500_0C_FSCTRL0, option); // Frequency offset hack
XN297L_SetTXAddr(addr, sizeof(addr));
CC2500_SetPower();
calibrate_pll();
}
else
#endif
@ -458,6 +475,9 @@ uint16_t MJXQ_callback()
if (bind_counter == 0)
{
MJXQ_init2();
#ifdef CC2500_INSTALLED
calibrate_pll();
#endif
BIND_DONE;
}
else