PSK 31 modulator
PSK-31 waveform and data stream modulator. More...
Defines | |
| #define | PSK_MAX_PACKET 160 |
| The maximum ASCII length of a PSK 31 message. | |
| #define | PSK31_TIMESLOT 0 |
| The UTC time in seconds to send a PSK31 data stream. | |
| #define | PSK_SYNC_LENGTH 32 |
| Number of 0 bits to transmit at start of message. | |
| #define | PSK_END_LENGTH 8 |
| Number of 0 bits to transmit at end of message. | |
Enumerations | |
| enum | PSK_MODE { PSK_WAIT_MSG, PSK_TX_SYNC, PSK_TX_MESSAGE, PSK_TX_END } |
| PSK-31 state machine. More... | |
Functions | |
| bool_t | psk31CreateDataPacket () |
| Create the PSK 31 packet. | |
| void | psk31Init () |
| Initialize the PSK 31 modulator. | |
| bool_t | psk31IsFree () |
| Determine if the hardware if ready to a PSK 31 packet. | |
| void | psk31TimeUpdate () |
| This method should be called every 1 milliseconds by the timer interrupt. | |
| void | psk31TxPacket (uint8_t minutes) |
| Generate and start transmision of PSK-31 message. | |
| void | psk31TxByte (uint8_t value) |
| Write value to the PSK 31 buffer. | |
| void | psk31TxString (char *string, uint8_t length) |
| Write length characters of string. | |
| void | psk31TxNull () |
| bool_t | psk31IsMessageDone () |
Variables | |
| const uint16_t | PSK31_VARICODE [] |
| const uint32_t | PSK31_FREQ_LIST [] = { 14070450, 14070450, 14070450 } |
| PSK 31 frequency and amplitude list for minutes 0 through 2 modulo 2. | |
| const uint16_t | PSK31_AMP_LIST [] = { 105, 105, 105 } |
| uint8_t | pskCount |
| Counts the number of 1mS time slices in each 32mS of a bit time. | |
| uint16_t | pskData |
| The current PSK output character. | |
| bool_t | pskPhase |
| The current DDS phase offset where true is 180 degreees and false is 0 degrees. | |
| char | pskBuffer [PSK_MAX_PACKET] |
| Buffer that holds PSK packet. | |
| PSK_MODE | pskMode |
| State machine variable that indicates current transmit state. | |
| uint8_t | pskLastBits |
| Last 4 bits that were transmitted. | |
| uint8_t | pskIndex |
| Index into the PSK packet buffer. | |
| bool_t | pskMessageDoneFlag |
| Flag that is set when PSK-31 message is completed. | |
Detailed Description
PSK-31 waveform and data stream modulator.Define Documentation
| #define PSK31_TIMESLOT 0 |
| #define PSK_END_LENGTH 8 |
| #define PSK_MAX_PACKET 160 |
| #define PSK_SYNC_LENGTH 32 |
Enumeration Type Documentation
| enum PSK_MODE |
Function Documentation
| bool_t psk31CreateDataPacket | ( | ) |
Create the PSK 31 packet.
References ballastGetPumpCount(), cutDownIsActivate(), gpsPosition, lm92GetTemp(), LOG_TEMPERATURE_1, logInt16(), logType(), psk31TxByte(), and psk31TxNull().
Referenced by psk31TxPacket().
| void psk31Init | ( | ) |
Initialize the PSK 31 modulator.
References PSK_WAIT_MSG, pskCount, pskData, pskIndex, pskLastBits, pskMessageDoneFlag, pskMode, and pskPhase.
Referenced by main().
| bool_t psk31IsFree | ( | ) |
Determine if the hardware if ready to a PSK 31 packet.
- Returns:
- true if ready; otherwise false
References PSK_WAIT_MSG, and pskMode.
Referenced by tncTxPacket().
| bool_t psk31IsMessageDone | ( | ) |
| void psk31TimeUpdate | ( | ) |
This method should be called every 1 milliseconds by the timer interrupt.
References DDS_MODE_POWERDOWN, ddsPhase(), ddsSetMode(), IO_OSK, logSetDisableFlag(), PSK31_VARICODE, PSK_END_LENGTH, PSK_TX_END, PSK_TX_MESSAGE, PSK_TX_SYNC, PSK_WAIT_MSG, pskBuffer, pskCount, pskData, pskIndex, pskLastBits, pskMessageDoneFlag, pskMode, pskPhase, and sysPAOutput().
Referenced by timeUpdate().
| void psk31TxByte | ( | uint8_t | value | ) |
Write value to the PSK 31 buffer.
Maintain the pointer to the buffer. The value pskIndex must be set to 0 (zero) before calling this function for the first time.
- Parameters:
-
value to save to telemetry buffer
References PSK_MAX_PACKET, pskBuffer, and pskIndex.
Referenced by psk31CreateDataPacket(), psk31TxNull(), psk31TxPacket(), and psk31TxString().
| void psk31TxNull | ( | ) |
References psk31TxByte().
Referenced by psk31CreateDataPacket(), and psk31TxPacket().
| void psk31TxPacket | ( | uint8_t | minutes | ) |
Generate and start transmision of PSK-31 message.
If a message is already being transmitted, nothing occurs. The UTC time in minutes is required to set the DDS frequency.
- Parameters:
-
minutes UTC time in minutes
References DDS_MODE_PSK31, ddsSetAmplitude(), ddsSetFreq(), ddsSetMode(), logSetDisableFlag(), PSK31_AMP_LIST, PSK31_FREQ_LIST, psk31CreateDataPacket(), psk31TxByte(), psk31TxNull(), PSK_SYNC_LENGTH, PSK_TX_SYNC, PSK_WAIT_MSG, pskCount, pskData, pskIndex, pskMode, sysPAOutput(), TIME_MODE_PSK31, timeSetMode(), and tncIsFree().
Referenced by main().
| void psk31TxString | ( | char * | string, | |
| uint8_t | length | |||
| ) |
Write length characters of string.
References psk31TxByte().
Variable Documentation
| const uint16_t PSK31_AMP_LIST[] = { 105, 105, 105 } |
Referenced by psk31TxPacket().
| const uint32_t PSK31_FREQ_LIST[] = { 14070450, 14070450, 14070450 } |
PSK 31 frequency and amplitude list for minutes 0 through 2 modulo 2.
Referenced by psk31TxPacket().
| const uint16_t PSK31_VARICODE[] |
Referenced by psk31TimeUpdate().
| char pskBuffer[PSK_MAX_PACKET] |
Counts the number of 1mS time slices in each 32mS of a bit time.
Referenced by psk31Init(), psk31TimeUpdate(), and psk31TxPacket().
The current PSK output character.
Referenced by psk31Init(), psk31TimeUpdate(), and psk31TxPacket().
Index into the PSK packet buffer.
Referenced by psk31Init(), psk31TimeUpdate(), psk31TxByte(), and psk31TxPacket().
Flag that is set when PSK-31 message is completed.
Referenced by psk31Init(), psk31IsMessageDone(), and psk31TimeUpdate().
State machine variable that indicates current transmit state.
Referenced by psk31Init(), psk31IsFree(), psk31TimeUpdate(), and psk31TxPacket().
The current DDS phase offset where true is 180 degreees and false is 0 degrees.
Referenced by psk31Init(), and psk31TimeUpdate().
