diff options
Diffstat (limited to 'nuttx/configs/lpcxpresso-lpc1768/README.txt')
| -rw-r--r-- | nuttx/configs/lpcxpresso-lpc1768/README.txt | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/nuttx/configs/lpcxpresso-lpc1768/README.txt b/nuttx/configs/lpcxpresso-lpc1768/README.txt index 402d52881..65f58d552 100644 --- a/nuttx/configs/lpcxpresso-lpc1768/README.txt +++ b/nuttx/configs/lpcxpresso-lpc1768/README.txt @@ -11,7 +11,9 @@ Contents Embedded Artist's Base Board Development Environment GNU Toolchain Options - NuttX buildroot Toolchain + NuttX EABI "buildroot" Toolchain + NuttX OABI "buildroot" Toolchain + NXFLAT Toolchain Code Red IDE LEDs LPCXpresso Configuration Options @@ -406,8 +408,8 @@ Code Red IDE All of the above steps are automated in the bash script flash.sh that can be found in the configs/lpcxpresso/tools directory. -NuttX buildroot Toolchain -^^^^^^^^^^^^^^^^^^^^^^^^^ +NuttX EABI "buildroot" Toolchain +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ A GNU GCC-based toolchain is assumed. The files */setenv.sh should be modified to point to the correct path to the Cortex-M3 GCC toolchain (if @@ -430,7 +432,7 @@ NuttX buildroot Toolchain 4. cd <some-dir>/buildroot - 5. cp configs/cortexm3-defconfig-4.3.3 .config + 5. cp configs/cortexm3-eabi-defconfig-4.6.3 .config 6. make oldconfig @@ -440,10 +442,25 @@ NuttX buildroot Toolchain the path to the newly built binaries. See the file configs/README.txt in the buildroot source tree. That has more - detailed PLUS some special instructions that you will need to follow if you + details PLUS some special instructions that you will need to follow if you are building a Cortex-M3 toolchain for Cygwin under Windows. - NOTE: This is an OABI toolchain. +NuttX OABI "buildroot" Toolchain +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + + The older, OABI buildroot toolchain is also available. To use the OABI + toolchain: + + 1. When building the buildroot toolchain, either (1) modify the cortexm3-eabi-defconfig-4.6.3 + configuration to use EABI (using 'make menuconfig'), or (2) use an exising OABI + configuration such as cortexm3-defconfig-4.3.3 + + 2. Modify the Make.defs file to use the OABI converntions: + + +CROSSDEV = arm-nuttx-elf- + +ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft + -CROSSDEV = arm-nuttx-eabi- + -ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft NXFLAT Toolchain ^^^^^^^^^^^^^^^^ |