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--- doc:crazyflie:bootloader:index [2015-03-09 14:27]
arnaud
+++ doc:crazyflie:bootloader:index [2015-07-15 16:31]
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+====== Crazyflie bootloader ======
+The Crazyflies have a radio bootloader pre-programmed. It allows to flash all firmwares over the air using Crazyradio. The boot loaders cannot erase themselves so it is always possible to restart the Crazyflie in bootloader mode.
+For technical documentation go to:
+  * [[doc:crazyflie:bootloader:protocol|Bootloader protocol and architecture]]
+  * [[doc:crazyflie:bootloader:client|Bootloader client implementation]]
+====== Entering bootloader ======
+The bootloader can be entered in two ways: Cold-boot and warm-boot.
+===== Cold booting =====
+The procedure to cold-boot the bootloader depends of which Crazyflie you are using.
+For Crazyflie 1 start the bootloading sequence on the PC and restrart the Crazyflie.
+For Crazyflie 2, press the ON/OFF switch more than 1.5 second until the blue led blinks. Then release the button and the two blue leds should blink.
+===== Warm booting =====
+Warm booting is done when the Bootloader client restarts the Crazyflie in bootloader more automatically. While implemented in firmware this mode is not yet implemented in the PC client.

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