defmt

defmt is used at run time in 370 crates (of which 269 optionally). It is a direct run-time dependency in 321 crates. It's used only as a dev dependency in 26 crates (of which 22 directly).

Number of dependers	defmt version	Downloads/month
370	0.3.8	64K
1	0.3.5	23K
1	0.3.2	1.6K
17	0.2.3	420
7	0.1.3	75

Depender (with downloads and own rev deps)			defmt version
772K	419	heapless	optional	>=0.2.0, <0.4
296K	52	embedded-io	optional	^0.3
293K	395	nb	optional	^0.3
287K	187	postcard	optional	^0.3
230K	1101	embedded-hal	optional	^0.3
67K	43	smoltcp	optional	^0.3
21K	48	defmt-rtt		^0.3
50K	92	fugit	optional	>=0.2.0, <0.4
47K	63	embassy-sync	optional	^0.3
46K	18	uhlc	optional	^0.3.2
39K	112	embedded-hal-async	optional	^0.3
40K	54	embedded-io-async	optional	^0.3
31K	57	embedded-graphics-core	optional	^0.3.2
31K	106	usb-device	optional	^0.3
30K	46	embassy-futures	optional	^0.3
28K	156	embedded-graphics	optional	^0.3.2
20K	46	panic-probe	optional	^0.3
19K	34	embassy-executor	optional	^0.3
19K	59	embassy-time	optional	^0.3
18K	36	display-interface	optional	^0.3
18K	19	esp-println	optional	^0.3.6
15K	17	esp-backtrace	optional	^0.3.6
12K	14	stm32h7xx-hal	optional	>=0.2.0, <0.4
11K	7	embassy-usb-driver	optional	^0.3
10K	6	arbitrary-int	optional	^0.3.5
10K	24	embedded-hal-bus	optional	^0.3
10K	24	embedded-svc	optional	^0.3
10K	49	rp2040-hal	optional	>=0.2.0, <0.4
9.8K	2	esp32s3	optional	^0.3.6
9.4K	2	esp32s2	optional	^0.3.6
9.1K	38	atsamd-hal	optional	^0.3.4
9.0K	43	stm32f4xx-hal	optional	^0.3.5
8.8K	7	embassy-net-driver	optional	^0.3
6.9K	6	embassy-net-driver-channel	optional	^0.3
6.9K	7	esp-hal-common	optional	=0.3.5
6.7K	8	embassy-usb	optional	^0.3
6.6K		embassy-usb-synopsys-otg	optional	^0.3
6.4K	3	esp32c3	optional	^0.3.6
6.2K	19	bxcan	optional	>=0.2.3, <0.4.0
5.6K	2	esp32	optional	^0.3.6
5.6K	12	usbd-hid	optional	^0.3
5.5K	5	stm32-fmc	optional	^0.3
5.3K	2	esp32c6	optional	^0.3.6
4.6K	2	esp32c2	optional	^0.3.6
4.6K	16	bbqueue	optional	^0.3.0
4.4K	7	embassy-embedded-hal	optional	^0.3
4.4K	2	esp32h2	optional	^0.3.6
4.1K	7	lis3dh-async	optional	^0.3
3.8K	4	ieee802154	optional	>=0.2.0, <0.4
3.6K	4	embassy-net	optional	^0.3
950	7	defmt-test		^0.3
3.2K	4	esp-hal	optional	^0.3.6
3.1K	3	embassy-hal-internal	optional	^0.3
2.3K	6	embassy-rp	optional	^0.3
2.1K	2	imxrt-usbd	optional	^0.3
460		spi-memory-async		^0.3
450		bmp390		^0.3.8
450	2	rmk		^0.3
1.8K	1	cyw43	optional	^0.3
1.8K		cyw43-pio	optional	^0.3
1.7K		esp32p4	optional	^0.3.6
1.6K	17	embedded-sdmmc	optional	^0.3
330		defmt-brtt		^0.3
1.5K	2	sequential-storage	optional	^0.3
1.3K	1	rtic-sync	optional	^0.3
1.3K		esp-wifi	optional	^0.3.6
1.2K	1	picoserve	optional	^0.3.6
1.2K	7	embassy-stm32	optional	^0.3
240		can2040		^0.3
240	1	braid-triggerbox-comms		^0.3.0
1.1K	6	atat	optional	^0.3
170		aht20-driver		^0.3.6
160		stm32-hal2		^0.3.4
150		lora-phy		^0.3
150		utrace		^0.3.6
140	1	negicon-protocol		^0.3
140		gc9a01		^0.3
120		aps490_pfpu2_mini		^0.3
850	6	eeprom24x	optional	^0.3.6
850	3	spacepackets	optional	^0.3
750	3	satrs-shared	optional	^0.3
		a121-rs		^0.3.5
		is31fl3743b		^0.3
700	6	embassy-nrf	optional	^0.3
700		mini-rxtx	optional	^0.3.1
650		defmt-or-log	optional	^0.3.5
		log-to-defmt		^0.3
	1	blue_hal		^0.2
		jewel		^0.3.5
		blues-notecard		^0.3
		iqs5xx		^0.3
		ism330dhcx		^0.3.5
		canopen_rust		^0.3.5
550		serde-csv-core	optional	^0.3.4
	1	defmt-bbq		^0.3
		elmar-mppt		^0.3.2
550		ya-smoltcp	optional	^0.3
		alkyn		^0.3.0
		threadx-rs		^0.3
		sharp-memory-display		^0.3.0
		nucleo-h743zi		^0.3.1
		defmt-itm		^0.3
		robokit		^0.3
		itla		^0.3
		servo-pio		^0.3
		mnemos		^0.3.0
		bmp280-rs		^0.3.5
		manchester-code		^0.3.0
		mini-slcan		^0.1.0
		ublox-cellular-rs		^0.2
		defmt-ringbuf		^0.3
		defmt-rtt-target		^0.3.0
500		dw3000-ng	optional	^0.3
		esp32-wroom-rp		^0.3
		icm20948_driver		^0.3.0
500		json-lines	optional	^0.3
	1	microbit-bsp		^0.3
		ovl-atsamx7x-hal		^0.3.0
		sdmmc-spi		^0.3.2
	3	atsam4-hal		^0.3
		loadstone		^0.2
		ublox-short-range-rs		^0.2
		defmt-log-test		^0.2.1
	1	embedded-registers-derive		^0.3.5
		phm-worker		^0.3.0
		lp586x		^0.3
		pio-uart		^0.3.5
		usbd-ethernet		^0.3
		atwinc1500		^0.3.0
		hmc5883-async		^0.3.2
	1	ambiq-hal		^0.3
		defmt-serial		^0.3
		epd		^0.3
	1	printhor-hwi_mks_robin_nano		^0.3
	1	printhor-hwi_nucleo_64_arduino_cnc_hat		^0.3
	1	printhor-hwi_skr_mini_e3		^0.3
	1	usb-pd		^0.3.5
		usbh		^0.3.5
		a7105		^0.3
		bitbot_bsp		^0.3
		embedded-devices		^0.3.5
		fusb302b		^0.3.5
		rmk-rp2040		^0.3
480		crsf	optional	^0.3.6
460	8	stm32f3xx-hal	optional	>=0.2.3, <0.4.0
440	2	qingke	optional	^0.3.6
430	1	i2c-pio	optional	^0.3.0
330		embassy-net-wiznet	optional	^0.3
320	3	imxrt-log	optional	^0.3
310	5	rmodbus	optional	^0.3.0
310		usbd-storage	optional	^0.3
290		satrs	optional	^0.3
260		rust-mqtt	optional	^0.3
250		reqwless	optional	^0.3
240	5	at-commands	optional	^0.3
240	3	embedded-tls	optional	^0.3
240		stm32f4-staging	optional	^0.3.5
230	1	nourl	optional	^0.3
230		vlcb-defs	optional	^0.3
220	1	ieee802_3_miim	optional	^0.3
220		stm32h5	optional	^0.3.5
220		ublox-sockets	optional	^0.3
220		bme280	optional	^0.3.5
220		ethercrab	optional	^0.3.5
210	1	dmx-rdm	optional	^0.3
200		ector	optional	^0.3
180		usbd-picotool-reset	optional	>=0.2.0, <0.4
180		embedded-bacnet	optional	^0.3.5
170		embedded-hal-compat	optional	^0.3.0
160		embassy-boot-stm32	optional	^0.3
170		w5500-dhcp	optional	^0.3.4
170		w5500-mqtt	optional	^0.3.4
160		w5500-sntp	optional	^0.3.4
160	4	infrared	optional	^0.3
160		hub75-remastered	optional	^0.3.6
150		l0g	optional	^0.3
150	1	lorawan-device	optional	^0.3
150	2	mantra-rust-macros	optional	^0.3.6
150	1	postcard-rpc	optional	^0.3.5
150	2	w5500-ll	optional	^0.3.4
140	1	kiibohd-usb	optional	^0.3
140		scd4x	optional	^0.3.0
140	1	uftwo	optional	^0.3
130	2	kiibohd-hall-effect	optional	^0.3
130	5	w5500-hl	optional	^0.3.4
130	1	kll-hid	optional	^0.3
120	2	kiibohd-keyscanning	optional	^0.3
120		bmp180-embedded-hal	optional	^0.3.6
120	2	stm32wlxx-hal	optional	^0.3
120		tm1637-embedded-hal	optional	^0.3.6
120	3	embassy-boot	optional	^0.3
110	7	kll-core	optional	^0.3
110	6	esp-hal-smartled	optional	^0.3.6
110		pid-lite	optional	^0.2
110		mlx9061x	optional	^0.3.6
110		w25q32jv	optional	^0.3
100		the-bridge	optional	^0.3.6
	1	embedded-test	optional	^0.3.8
		bno055	optional	^0.3
		stemma-soil-sensor-embassy	optional	^0.3
	5	sixtyfps-corelib	optional	^0.3.0
	1	nrf-softdevice	optional	^0.3
	2	mqttrust	optional	^0.3
	1	hftwo	optional	^0.3
	2	midi-types	optional	^0.3.2
		nrf-dfu-target	optional	^0.3
	3	hid-io-protocol	optional	^0.3
		pcf85063a	optional	^0.3
		max7219-async	optional	^0.3
	1	ethercrab-wire	optional	^0.3.5
		adafruit-bluefruit-protocol	optional	^0.3
		adafruit-lcd-backpack	optional	^0.3
	1	adi-adxl355	optional	^0.3
		adi-adxl355-async	optional	^0.3
		async-button	optional	^0.3.5
		bbqueue-sync	optional	^0.3.0
		bern-kernel	optional	^0.3
		block-device-adapters	optional	^0.3
		bm1397-protocol	optional	^0.3.4
		bq27xxx	optional	^0.3
	2	byte-slab	optional	^0.3.0
		caprand	optional	^0.3
		dcc-rs	optional	^0.3
		dfr0299	optional	^0.3
		drogue-ajour-protocol	optional	^0.3
		drogue-tls	optional	^0.3
		drv8305	optional	~0.2
		efm32pg1b-pac	optional	^0.3.6
		embassy-boot-nrf	optional	^0.3
		embassy-boot-rp	optional	^0.3
		embassy-net-adin1110	optional	^0.3
		embassy-net-enc28j60	optional	^0.3
		embassy-net-esp-hosted	optional	^0.3
		embassy-net-ppp	optional	^0.3
	2	embassy-traits	optional	^0.2.0
		embedded-drivers	optional	^0.3
	1	embedded-update	optional	^0.3
		emc2101	optional	^0.3.2
		emc2101-rs	optional	^0.3.2
		erdnuss-comms	optional	^0.3
		es-wifi-driver	optional	^0.3
		factbird-common	optional	^0.2
		femtopb	optional	^0.3.6
		ft6236	optional	^0.3.4
		ghostfat	optional	^0.3.1
		hp203b	optional	^0.3.2
		hts221-async	optional	^0.3
		ina260-async	optional	^0.3.2
		it7259	optional	^0.3.4
		kc11b04	optional	^0.3
	1	kiibohd-hid-io	optional	^0.3
		libscd	optional	^0.3
		lora-e5-bsp	optional	^0.3
	2	lora-modulation	optional	^0
	1	lorawan	optional	^0.3
		lsm6ds3tr	optional	^0.3.5
		ltc690x	optional	^0.2.3
		max145784-driver	optional	^0.3
		max14578e-driver	optional	^0.3
		max7797x-driver	optional	^0.3
		mcp2515	optional	^0.3.2
		mcp4725-async	optional	^0.3
		memory-lcd-spi	optional	^0.3.4
	2	midi-convert	optional	^0.3.2
		minicbor-embedded-io	optional	^0.3
	2	mnemos-common	optional	^0.3
	1	moonboot	optional	^0.2
		mqtt-sn	optional	^0.2
	1	mqttrust_core	optional	^0.3
		nau88c22	optional	^0.3.5
		neotron-bmc-protocol	optional	^0.3
		nobcd	optional	^0.3
		nrf-modem	optional	^0.3
		nrf24radio	optional	^0.3
		nucleo-wl55jc-bsp	optional	^0.3
		oled	optional	^0.3.4
		orouter-serial	optional	^0.3.1
		orouter-wireless	optional	^0.3.2
	2	phm-icd	optional	^0.3.0
		platform-switch	optional	^0.3
	1	ppproto	optional	^0.3
		prinThor	optional	^0.3.5
	5	printhor-hwa-common	optional	^0.3
	6	radio	optional	^0.3.0
		radio-at86rf23x	optional	^0.3.0
		radio-sx1231	optional	^0.3
		radio-sx128x	optional	^0.3.5
	1	rotary-encoder-hal	optional	^0.1.2
		rustot	optional	^0.3
		seeed-lora-e5-at-commands	optional	^0.3
	1	sh1107	optional	^0.3.2
		sht4x	optional	^0.3.2
		sirena	optional	^0.3
		sitronix-touch	optional	^0.3.4
		smoltcp-rmodbus	optional	^0.3.6
		stm32-bootloader-client	optional	^0.2.1
		stm32-eth	optional	^0.3
		stm32f3xx-hal-v2	optional	^0.1.2
		stm32g473-hal_oppe	optional	^0.3.0
	1	stm32g4xx-hal	optional	^0.3.2
		stm32wb-hci	optional	^0.3
	2	sunset	optional	^0.3
	1	sunset-embassy	optional	^0.3
		tb6612fng	optional	^0.3
		tca9555	optional	^0.3
		tinygif	optional	^0.3.4
		tlv320aic23	optional	=0.3.2
		tmp117	optional	^0.3
		trenchcoat	optional	^0.3
	1	usbd-human-interface-device	optional	^0.3
		vl53l4cd	optional	^0.3
		w5500-dns	optional	^0.3.4
	1	w5500-tls	optional	^0.3.4
	1	wasefire-board-api	optional	^0.3.5
	5	wasefire-error	optional	^0.3.5
	4	wasefire-logger	optional	^0.3.5
		wasefire-scheduler	optional	^0.3.5
		wii-ext	optional	^0.3.0
		xpt2046	optional	^0.3.0
7.4K	14	rp-pico	dev	^0.3.5
600	5	imxrt-hal	dev	^0.3
390		stk8ba58	dev	^0.3.6
380	5	teensy4-bsp	dev	^0.3
340		st7565	dev	^0.3.0
270		oled_async	dev	^0.3
260		rp2040-flash	dev	^0.3.2
130		jh71xx-hal	dev	^0.3
		epd-spectra	dev	^0.3.6
		ad57xx	dev	^0.3.5
		async-stm32f1xx	dev	^0.1
		solderparty-rp2040-stamp-carrier	dev	^0.3
		is31fl3193	dev	^0.3.2
		lpc546xx-hal	dev	^0.3.0
		persistent-buff	dev	^0.3
		rucos-cortex-m	dev	^0.3
		pimoroni-plasma-2040	dev	^0.3.5
	1	pimoroni-servo2040	dev	^0.3.5
		pimoroni-tiny2040	dev	^0.3.5
		adafruit-featherwing-oled128x64	dev	^0.3.2
	1	dwm1001	dev	^0.3.0
		sparkfun-micromod-rp2040	dev	^0.3.5
		cortex-m-microclock	dev	^0.3.4
		sht25	dev	^0.3