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Macros
#define	PHYPHOX_BLE_FORMAT_VERSION "1.20"
	The phyphox file-format version every generated experiment declares.

#define	PHYPHOX_BLE_VERSION "2.0.0"
	Library version as reported by PhyphoxBLE::version(). Must match library.properties.

#define	PHYPHOX_BLE_DATA_CHANNELS 5
	Values the board streams to the phone: write(f1 … f5).

#define	PHYPHOX_BLE_MAX_INPUT_CHANNEL 16
	Highest input channel number a sketch may use.

#define	PHYPHOX_BLE_SENSOR_COMPONENTS 6
	Components a phone sensor can deliver: x, y, z, abs, accuracy, t — the format has six.

#define	PHYPHOX_BLE_INLINE_OPTIONS 8
	Entries the incremental addMap()/addOption() setters keep inside the builder object before addExperiment() copies them.

#define	PHYPHOX_BLE_MAX_STRING_LENGTH 250
	Longest string a setter accepts (label, unit, description, …).

#define	PHYPHOX_BLE_DEFAULT_MTU 20
	Default MTU payload (ATT_MTU 23 − 3). setMTU() raises it where the transport can negotiate.

#define	PHYPHOX_BLE_MAX_MTU 512

#define	PHYPHOX_BLE_TRANSFER_RETRY_DELAY_MS 5
	Transfer flow control: a refused notification is re-sent after RETRY_DELAY_MS, the pause doubling with every consecutive refusal up to RETRY_MAX_MS.

#define	PHYPHOX_BLE_TRANSFER_RETRY_MAX_MS 50

#define	PHYPHOX_BLE_TRANSFER_STALL_MS 3000
	A transfer that has not moved (no packet accepted) for this long is abandoned, so a stuck session can never block the next trigger.

#define	PHYPHOX_BLE_TRANSFER_START_DELAY_MS 150
	The first packet waits this long after the trigger.

#define	PHYPHOX_BLE_TRANSFER_BURST 8
	Packets sent back to back per pump before the stack gets a breather (the ESP32 task pumps every 2 ms).

#define	PHYPHOX_BLE_CORDIO_PACKET_GAP_MS 30
	Nano 33 BLE and Nicla Sense ME (Mbed's Cordio link layer): the minimum time between two experiment packets, so the link layer holds at most one at a time.

#define	PHYPHOX_BLE_NINA_EVENT_QUEUE 8
	NINA-B31 transport: unsolicited module events (connect, write, read request) queued while a command waits for its response, dispatched from poll().

Macro Definition Documentation

◆ PHYPHOX_BLE_CORDIO_PACKET_GAP_MS

#define PHYPHOX_BLE_CORDIO_PACKET_GAP_MS 30

Nano 33 BLE and Nicla Sense ME (Mbed's Cordio link layer): the minimum time between two experiment packets, so the link layer holds at most one at a time.

With several queued it drops one now and then while reporting it sent (every 4th packet on a Nano 33 BLE). 1.x paced its transfer at the same 30 ms and never showed the loss.

◆ PHYPHOX_BLE_DATA_CHANNELS

#define PHYPHOX_BLE_DATA_CHANNELS 5

Values the board streams to the phone: write(f1 … f5).

Fixed at 5 as in 1.x — the data characteristic carries five float32 in one 20-byte notification. More bandwidth comes from setMTU() plus the array write and setRepeating(), not from more channels (decision D12).

◆ PHYPHOX_BLE_DEFAULT_MTU

#define PHYPHOX_BLE_DEFAULT_MTU 20

Default MTU payload (ATT_MTU 23 − 3). setMTU() raises it where the transport can negotiate.

◆ PHYPHOX_BLE_FORMAT_VERSION

#define PHYPHOX_BLE_FORMAT_VERSION "1.20"

The phyphox file-format version every generated experiment declares.

Always the latest version this library knows (decision D1 of the 2.0 plan); bumped with library releases. The conformance test checks that nothing the library emits is newer than this.

◆ PHYPHOX_BLE_INLINE_OPTIONS

#define PHYPHOX_BLE_INLINE_OPTIONS 8

Entries the incremental addMap()/addOption() setters keep inside the builder object before addExperiment() copies them.

Only a convenience limit: setOptions(n, labels, values) and setMaps(n, …) take arrays of any length.

◆ PHYPHOX_BLE_MAX_INPUT_CHANNEL

#define PHYPHOX_BLE_MAX_INPUT_CHANNEL 16

Highest input channel number a sketch may use.

Every input channel is one characteristic, and the NINA-B31 module keeps a bounded GATT table (plan §3.3), so this is a protocol cap, not a pool: only the channels actually used cost anything. 1.x allowed 5.

◆ PHYPHOX_BLE_MAX_MTU

#define PHYPHOX_BLE_MAX_MTU 512

◆ PHYPHOX_BLE_MAX_STRING_LENGTH

#define PHYPHOX_BLE_MAX_STRING_LENGTH 250

Longest string a setter accepts (label, unit, description, …).

Longer strings are an ERR_01 configuration error. Strings are stored by pointer, never copied — see docs/concepts.md, "Strings".

◆ PHYPHOX_BLE_NINA_EVENT_QUEUE

#define PHYPHOX_BLE_NINA_EVENT_QUEUE 8

NINA-B31 transport: unsolicited module events (connect, write, read request) queued while a command waits for its response, dispatched from poll().

Each slot holds one line (128 bytes).

◆ PHYPHOX_BLE_SENSOR_COMPONENTS

#define PHYPHOX_BLE_SENSOR_COMPONENTS 6

Components a phone sensor can deliver: x, y, z, abs, accuracy, t — the format has six.

◆ PHYPHOX_BLE_TRANSFER_BURST

#define PHYPHOX_BLE_TRANSFER_BURST 8

Packets sent back to back per pump before the stack gets a breather (the ESP32 task pumps every 2 ms).

Far faster than any link, but leaves room for the phone's writes and reads.

◆ PHYPHOX_BLE_TRANSFER_RETRY_DELAY_MS

#define PHYPHOX_BLE_TRANSFER_RETRY_DELAY_MS 5

Transfer flow control: a refused notification is re-sent after RETRY_DELAY_MS, the pause doubling with every consecutive refusal up to RETRY_MAX_MS.

There is no retry count — a congested stack can refuse for hundreds of milliseconds in a row and the packet must still go out; only the stall watchdog below abandons a transfer.

◆ PHYPHOX_BLE_TRANSFER_RETRY_MAX_MS

#define PHYPHOX_BLE_TRANSFER_RETRY_MAX_MS 50

◆ PHYPHOX_BLE_TRANSFER_STALL_MS

#define PHYPHOX_BLE_TRANSFER_STALL_MS 3000

A transfer that has not moved (no packet accepted) for this long is abandoned, so a stuck session can never block the next trigger.

The app's own transfer timeout is longer.

◆ PHYPHOX_BLE_TRANSFER_START_DELAY_MS

#define PHYPHOX_BLE_TRANSFER_START_DELAY_MS 150

The first packet waits this long after the trigger.

The apps subscribe and then at once write 1 to the control characteristic; a board that floods notifications the moment the subscription arrives starves the stack's response to that write, and Android abandons the transfer after 5 s with "could not write" (seen on a Pixel 9 Pro, 2026-09-13).

◆ PHYPHOX_BLE_VERSION

#define PHYPHOX_BLE_VERSION "2.0.0"

Library version as reported by PhyphoxBLE::version(). Must match library.properties.

Macros