flipperzero-firmware/wiki/fw/Timers.md

Tim1

~1 kHz, PWM

• Ch1 -- red led
• Ch2 -- green led
• Ch3 -- blue led

Tim2

46/48 kHz, interrupt for IR. Ch4 -- IR TX

Tim4

~1 kHz, PWM

• Ch1 -- backlight

Tim5

Variable freq. PWM. Ch4 -- speaker.

Tim8

• Ch2 -- iButton emulate

Tim15

125 kHz. Square generator and interrupt/RFID pull.

• Ch1 -- RFID OUT (square generator)
• Ch2 -- RFID Pull

Devices

Speaker

Tim5 ch4

Blue led

Tim1, Tim3, Tim8

Red led

Tim1

Green led

Tim15, Tim1, Tim8

Backlight

Tim16, Tim4

IR TX

Tim2 ch4

RFID out

Tim15, Tim1

RFID pull

Tim15, Tim1, Tim8

iButton

Tim3, Tim8