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Diffstat (limited to 'nuttx/configs/pcblogic-pic32mx/README.txt')
-rw-r--r-- | nuttx/configs/pcblogic-pic32mx/README.txt | 49 |
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diff --git a/nuttx/configs/pcblogic-pic32mx/README.txt b/nuttx/configs/pcblogic-pic32mx/README.txt index b6a4d54da..c28737c83 100644 --- a/nuttx/configs/pcblogic-pic32mx/README.txt +++ b/nuttx/configs/pcblogic-pic32mx/README.txt @@ -12,6 +12,7 @@ Contents PIC32MX460F512L Pin Out MAX3232 Connection Toolchains + Loading NuttX with PICkit2 PIC32MX Configuration Options Configurations @@ -212,6 +213,54 @@ Toolchains If you have problems with the dependency build (for example, if you are not building on C:), then you may need to modify tools/mkdeps.sh +Loading NuttX with PICkit2 +========================== + + Intel Hex Forma Files: + ---------------------- + + When NuttX is built it will produce two files in the top-level NuttX + directory: + + 1) nuttx - This is an ELF file, and + 2) nuttx.ihx - This is an Intel Hex format file. This is controlled by + the setting CONFIG_INTELHEX_BINARY in the .config file. + + The PICkit tool wants an Intel Hex format file to burn into FLASH. + However, there are two problems with the generated nutt.ihx: + + 1) The tool expects Intel Hex format files to be named *.hex. This + is not a significant issue. However, just renaming the file to + nuttx.hex is *not* sufficient. There is another problem: + 2) The tool expects the nuttx.hex file to contain physical addresses. + But the nuttx.ihx file generated from the top-level make will have + address in the KSEG0 and KSEG1 regions. + + tools/mkpichex: + --------------- + + There is a simple tool in the configs/pcblogic-pic32mx/tools directory + that can be used to solve both issues with the nuttx.ihx file. But, + first, you must build the the tools: + + cd configs/pcblogic-pic32mx/tools + make + + Now you will have an excecutable file call mkpichex (or mkpichex.exe on + Cygwin). This program will take the nutt.ihx file as an input, it will + convert all of the KSEG0 and KSEG1 addresses to physical address, and + it will write the modified file as nuttx.hex. + + To use this file, you need to do the following things: + + . ./setenv.sh # Source setenv.sh. Among other this, this script + # will add configs/pcblogic-pic32mx/tools to your + # PATH variable + make # Build nuttx and nuttx.ihx + mkpichex $PWD # Convert nuttx.ihx to nuttx.hex. $PWD is the path + # to the top-level build directory. It is the only + # required input to mkpichex. + PIC32MX Configuration Options ============================= |