This is the multi-page printable view of this section. Click here to print...

For suitable output, we recommend to use Google Chrome (15+) or Microsoft Edge (79+).

As of 2025-09-10

TWESTG_CMD_u32CmdOp() Command Explanation

TWESTG_CMD_u32CmdOp() Command Explanation (for internal developers)

This section explains the commands for TWESTG_CMD_u32CmdOp().

TWESTG_CMD_u32CmdOp() Command Explanation (for Internal Developers)

Command execution by the TWESTG_CMD_u32CmdOp() function provides common procedures with applications (firmware) implemented using the TWENETstgs library. However, this information relates to the internal implementation of the library and is not intended for use by general users.

Overview

The TWESTG_CMD_u32CmdOp() function in twesettings_cmd.[ch] is intended to execute 0xdb commands. This function includes processes such as obtaining module various information, obtaining configuration information, reflecting configuration information, and resetting. Many processes call the configuration-related helper function TWEINTRCT_cbu32GenericHandler().

Data Types

TWE_APIRET: Success if the 0x80000000 bit is set, failure if not. The remaining 31 bits are used for parameters.
TWE_tsBuffer: A structure containing a pointer to the buffer, the sequence length, and the maximum buffer length.
TWESTG_tsFinal: The management structure for configuration-related settings.

`TWESTG_CMD_u32CmdOp()`

TWE_APIRET TWESTG_CMD_u32CmdOp(uint8 u8Op, TWE_tsBuffer *pBufIn, TWE_tsBuffer *pBufOut, TWESTG_tsFinal *psFinal)

Performs processing corresponding to u8Op. Input data pBufIn and output data pBufOut are used depending on the process. The last parameter specifies the configuration management structure psFinal.

Parameter	Type	Description
`u8Op`	`uint8`	Specifies the processing content.
`pBufIn`	`TWE_tsBuffer *`	Input sequence.
`pBufOut`	`TWE_tsBuffer *`	Specifies the storage area for output data. `NULL` can be specified for some processes. The state on processing failure is undefined in principle.
`psFinal`	`TWESTG_tsFinal *`	Specifies the configuration information management structure.

The u8Op overview is as follows:

E_TWESTG_CMD_OP_ACK = 0xF0                    ACK processing
E_TWESTG_CMD_OP_QUERY_MODULE_INFO = 0xF1    Acquisition of SID, etc.
E_TWESTG_CMD_OP_APPLY_SETTINGS = 0xF2        Apply settings (do not save)
E_TWESTG_CMD_OP_QUERY_SETTINGS = 0xF3        Read settings
E_TWESTG_CMD_OP_MODULE_CONTROL = 0xF8        Various processes related to settings
E_TWESTG_CMD_OP_REVERT = 0xFD               Revert settings
E_TWESTG_CMD_OP_SAVE = 0xFE                 Save settings
E_TWESTG_CMD_OP_DO_MDDULE_RESET = 0xFF,     Module reset

The return value indicates success or failure. Parameters may be set depending on the process.

Return Value	Value	Status
`TWE_APIRET_SUCCESS`	b0..b7 → u8Op, others depend on processing	On success
`TWE_APIRET_FAIL`	b0..b7 → u8Op, others depend on processing	On failure

Processing

E_TWESTG_CMD_OP_ACK (F0)

Performs an ACK response. The input sequence is output as-is.

Example

(None) -> 01       : If no input, 01 is returned.
112233 -> 112233   : If 112233, it is returned as-is in the output.

E_TWESTG_CMD_OP_QUERY_MODULE_INFO (F1)

Retrieves various module information.

Input Column	Data Type	Value	Content
`[0]`	OCTET	`0x01`	Get module’s SID.
		Other	Undefined
Subsequent data is undefined

Output Column ([0] == 0x01)	Data Type	Value	Content
`[0..3]`	BE_DWORD		Module’s SID.

E_TWESTG_CMD_OP_APPLY_SETTINGS(F2)

Modifies configuration information.

Configuration information will not be applied until it is saved and the module is reset.
The behavior of the application in an unapplied state is undefined.
If you transition to interactive mode in an undefined state, the changed data will be discarded.
Even when attempting to change to the same content as existing data, this process returns a successful return value. However, if a save (E_TWESTG_CMD_OP_SAVE) is executed, no actual save will occur.
This process does not write to the output (pBufOut).

Input Column	Data Type	Value	Content
`[0]`	OCTET	`0x01`	Change the setting specified by ID.
`[1]`	OCTET	Not `0x00`	Setting ID
`[2..]`			Data type dependent

Configuration Data

Setting ID	Content	Input Data	Remarks
`0x01`	Application ID	`BE_DWORD (uint32_t)`
`0x02`	Logical ID (8bit)	`OCTET (uint8_t)`
`0x03`	Channel	`OCTET (uint8_t)`
`0x04`	Multiple Channels	`BE_WORD(uint16_t)`	b0: ch11, b1: ch12, …, b15: ch16
		`BE_DWORD(uint32_t)`	Bitwise OR of `1UL << ch` (e.g., for 11, 13 it’s `1UL « 11
`0x05`	Radio Output and Retransmission	`OCTET (uint8_t)`	Upper 4 bits: retransmission count, Lower 4 bits: output setting (0..3, 3 is highest output)
`0x06, 0x08, 0x09, 0x0A`	Option (32bit)	`BE_DWORD (uint32_t)`
`0x07`	UART Settings	`BE_WORD (int16_t)`	Input configuration data in internal format as-is.
		`BE_DWORD`	Specifies baud rate (9600 … 250000). Other communication conditions are 8N1.
		`BE_DWORD` `OCTET` `OCTET` `OCTET`	Specifies all parameters: - Baud rate (DWORD) - Data bits (7 or 8) - Parity (‘N’ or ‘E’ or ‘O’) - Stop bits (1 or 2)

Example

01011234BEEF        Sets Application ID (0x01) to 0x1234BEEF.
010212              Sets Channel (0x02) to 0x12 (18).

E_TWESTG_CMD_OP_QUERY_SETTINGS(F3)

Retrieves configuration information.

Input Column	Data Type	Value	Content
`[0]`	OCTET	`0x01`	(QTYP) Get the setting specified by ID.
`[1]`	OCTET	Not `0x00`	Setting ID

Output for QTYP==1

		Remarks
`[0]`	OCTET	Data type (uint8_t: 1, int8_t: 2, uint16_t: 3, int16_t: 4, uint32_t: 5, int32_t: 6, uint8_t[]: 0x80 (lower 5 bits are data length))
`[...]`		Data type dependent (Integer types WORD, DWORD are Big Endian order)

Setting ID	Content	Input Data	Remarks
`0x01`	Application ID	`BE_DWORD (uint32_t)`
`0x02`	Logical ID (8bit)	`OCTET (uint8_t)`
`0x03`	Channel	`OCTET (uint8_t)`
`0x04`	Multiple Channels	`BE_WORD(uint16_t)`	b0: ch11, b1: ch12, …, b15: ch16
`0x05`	Radio Output and Retransmission	`OCTET (uint8_t)`	Upper 4 bits: retransmission count, Lower 4 bits: output setting (0..3, 3 is highest output)
`0x06, 0x08, 0x09, 0x0A`	Option (32bit)	`BE_DWORD (uint32_t)`
`0x07`	UART Settings	`BE_WORD (int16_t)`	Internal format configuration data. b15: 1 for 7bit, 0 for 8bit. b14: 1 for STOPBIT=2, 0 for 1. b12,13: 0->NONE, 1->ODD, 2->EVEN. b0..b11->Baud rate / 100.

Example

0101 -> 051234BEEF  -> Application ID (uint32_t 0x1234beef)
0102 -> 010D        -> Channel (uint8_t 13)

E_TWESTG_CMD_OP_REVERT (0xFD)

By executing E_TWESTG_CMD_OP_SAVE immediately after this command, the configuration information is reverted to its initial values.

Calls TWEINTRCT_cbu32GenericHandler(psIntr, E_TWEINRCT_OP_REVERT, TRUE, 0, NULL). The TRUE specified in the third argument means that the saved configuration information is not loaded. Ensure that the application’s TWEINTRCT_cbu32GenericHandler() is correctly implemented.

No input data, no output data.

E_TWESTG_CMD_OP_SAVE (0xFE)

When configuration information is changed, it is saved to non-volatile memory.

If attempting to overwrite or change to the same values that are already set, no save is performed. The function returns TWE_APIRET_SUCCESS_W_VALUE(0x100 | E_TWESTG_CMD_OP_SAVE).
If a save is performed, a reset should be carried out promptly (operation with changed settings without reset is undefined).

No input data, no output data.

E_TWESTG_CMD_OP_DO_MDDULE_RESET (0xFF)

Resets the module.

No input data, no output data.