diff options
Diffstat (limited to 'nuttx/configs/stm32f4discovery')
| -rw-r--r-- | nuttx/configs/stm32f4discovery/README.txt | 62 |
1 files changed, 57 insertions, 5 deletions
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt index baf5184e3..65b4bf752 100644 --- a/nuttx/configs/stm32f4discovery/README.txt +++ b/nuttx/configs/stm32f4discovery/README.txt @@ -10,7 +10,9 @@ Contents - Development Environment - GNU Toolchain Options - IDEs - - NuttX buildroot Toolchain + - NuttX EABI "buildroot" Toolchain + - NuttX OABI "buildroot" Toolchain + - NXFLAT Toolchain - LEDs - PWM - UARTs @@ -174,8 +176,8 @@ IDEs one time from the Cygwin command line in order to obtain the pre-built startup object needed by RIDE. -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 @@ -198,7 +200,7 @@ 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 @@ -208,9 +210,59 @@ 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 are + details PLUS some special instructions that you will need to follow if you are building a Cortex-M3 toolchain for Cygwin under Windows. +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 +================ + + If you are *not* using the NuttX buildroot toolchain and you want to use + the NXFLAT tools, then you will still have to build a portion of the buildroot + tools -- just the NXFLAT tools. The buildroot with the NXFLAT tools can + be downloaded from the NuttX SourceForge download site + (https://sourceforge.net/projects/nuttx/files/). + + This GNU toolchain builds and executes in the Linux or Cygwin environment. + + 1. You must have already configured Nuttx in <some-dir>/nuttx. + + cd tools + ./configure.sh lpcxpresso-lpc1768/<sub-dir> + + 2. Download the latest buildroot package into <some-dir> + + 3. unpack the buildroot tarball. The resulting directory may + have versioning information on it like buildroot-x.y.z. If so, + rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot. + + 4. cd <some-dir>/buildroot + + 5. cp configs/cortexm3-defconfig-nxflat .config + + 6. make oldconfig + + 7. make + + 8. Edit setenv.h, if necessary, so that the PATH variable includes + the path to the newly builtNXFLAT binaries. + LEDs ==== |