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Update README

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This commit is contained in:
Gregory Nutt 2016-11-15 13:25:30 -06:00
parent 21f92ba601
commit 23d2915179
1 changed files with 19 additions and 4 deletions
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configs/esp32-core/README.txt
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@ -285,8 +285,8 @@ OpenOCD for the ESP32
If you do not do the install step, then you will have a localhost
version of the OpenOCD binary at openocd-esp32/src.
Running OpenOCD
--------------
Starting the OpenOCD Server
---------------------------
- cd to openocd-esp32 directory
- copy the modified esp32.cfg script to this directory
@ -411,6 +411,18 @@ OpenOCD for the ESP32
Executing and Debugging from FLASH and IRAM
===========================================
Enable Debug Symbols
--------------------
To debug with GDB, you will need to enable symbols in the build. You do this
with 'make menuconfig' then selecting:
- "Build Setup" -> "Debug Options" -> "Generate Debug Symbols"
And, to make debugging easier, also disable optimizations. This will make
your code a lot bigger:
- "Build Setup" -> "Optimization Level" -> "Suppress Optimization"
FLASH
-----
OpenOCD currently doesn't have a FLASH driver for ESP32, so you can load
@ -477,11 +489,11 @@ OpenOCD for the ESP32
for flashing into the board. The command should to convert ELF file to binary
image looks as follows:
python esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 elf2image --flash_mode "dio" --flash_freq "40m" --flash_size "2MB" -o app.bin app.elf
python esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 elf2image --flash_mode "dio" --flash_freq "40m" --flash_size "2MB" -o nuttx.bin nuttx
To flash binary image to your development board, use the same esptool.py utility:
python esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 write_flash -z --flash_mode dio --flash_freq 40m --flash_size 2MB 0x1000 app.bin
python esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 write_flash -z --flash_mode dio --flash_freq 40m --flash_size 2MB 0x1000 nuttx.bin
The argument before app.bin (0x1000) indicates the offset in flash where binary
will be written. ROM bootloader expects to find an application (or second stage
@ -551,6 +563,9 @@ NOTES:
to set CONFIG_ESP32CORE_RUN_IRAM=y for now (see the " Executing
and Debugging from FLASH and IRAM" section above).
To select this option, do 'make menuconfig'. Then you can find
the selection under the "Board Selection" menu as "Run from IRAM".
Configuration sub-directories
-----------------------------