diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/board/sipeed/maix.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/doc/board/sipeed/maix.rst b/doc/board/sipeed/maix.rst index 0b3a58070c..3f791b42fa 100644 --- a/doc/board/sipeed/maix.rst +++ b/doc/board/sipeed/maix.rst @@ -285,11 +285,15 @@ Technical Details Boot Sequence ^^^^^^^^^^^^^ -1. ``RESET`` pin is deasserted. +1. ``RESET`` pin is deasserted. The pin is connected to the ``RESET`` button. It + can also be set to low via either the ``DTR`` or the ``RTS`` line of the + serial interface (depending on the board). 2. Both harts begin executing at ``0x00001000``. 3. Both harts jump to firmware at ``0x88000000``. 4. One hart is chosen as a boot hart. -5. Firmware reads value of pin ``IO_16`` (ISP). +5. Firmware reads the value of pin ``IO_16`` (ISP). This pin is connected to the + ``BOOT`` button. The pin can equally be set to low via either the ``DTR`` or + ``RTS`` line of the serial interface (depending on the board). * If the pin is low, enter ISP mode. This mode allows loading data to ram, writing it to flash, and booting from specific addresses. |