manual:demos:olimex_lpc_l2294_gcc
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| - | ====== ARM7 LPC2000 Olimex LPC-L2294 GCC ====== | ||
| - | ===== Supported firmware update interfaces ===== | ||
| - | ^ UART ^ CAN ^ USB ^ TCP/IP ^ SD-card ^ | ||
| - | | Yes | Yes | No | No | No | | ||
| - | |||
| - | ===== Development Environment ===== | ||
| - | {{:manual:lpc_l2294.jpg?nolink&200 |}} | ||
| - | This demo is targeted towards the [[http://www.olimex.com/dev/lpc-l2294.html|Olimex LPC-L2294]] board, with 1 MB external RAM and 2 MB external Flash EEPROM. | ||
| - | |||
| - | For software development, the [[http://www.mentor.com/embedded-software/sourcery-tools/sourcery-codebench/lite-edition|Codesourcery G++ Lite]] compiler was used (Target OS EABI). This is based on GNU GCC for ARM processors and is freely available for download from their website. | ||
| - | |||
| - | To program the bootloader into the internal flash on the LPC2294 microcontroller, the [[http://www.olimex.com/dev/arm-usb-tiny-h.html|Olimex ARM-USB-TINY-H]] JTAG interface was used in combination with [[http://openocd.sourceforge.net/|OpenOCD 0.4.0]]. However, this is not required if you have another means of programming the internal flash. | ||
| - | |||
| - | Please note that the board that was used for the demo had a modified external crystal oscillator of **20 MHz**, instead of the standard 14.74 MHz crystal to allow for better matching CAN baudrate. If you use the 14.74 MHz crystal, please update configurable **BOOT_CPU_XTAL_SPEED_KHZ** in file **"config.h"**. | ||
| - | |||
| - | ===== Building and programming the Bootloader ===== | ||
| - | Before the bootloader can be used, it needs to be built and programmed into the LPC2294's internal flash memory. The steps in this section only need to be done once. | ||
| - | |||
| - | Batch files are added to aid in building the software program. First clean the bootloader program by double-clicking the file "\Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Boot**\cmd\**clean.bat**". Next, build the bootloader program by double-clicking the file "\Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Boot**\cmd\**build.bat**". The output should look like: | ||
| - | <code> | ||
| - | +++ Assembling [cstart.o] | ||
| - | +++ Compiling [hooks.o] | ||
| - | +++ Compiling [main.o] | ||
| - | +++ Compiling [boot.o] | ||
| - | ... | ||
| - | +++ Linking [openbtl_olimex_lpc_l2294_20mhz.elf] | ||
| - | ... | ||
| - | +++ Build complete [openbtl_olimex_lpc_l2294_20mhz.hex] | ||
| - | </code> | ||
| - | |||
| - | The bootloader program is now ready to be programmed into the internal flash memory of the LPC2294. Using your favorite programmer, flash the bootloader using one of the following files, depending on what file type your programmer supports: | ||
| - | |||
| - | * \Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Boot**\bin\**openbtl_olimex_lpc_l2294_20mhz.elf** | ||
| - | * \Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Boot**\bin\**openbtl_olimex_lpc_l2294_20mhz.hex** | ||
| - | |||
| - | ===== Building the Demo Program ===== | ||
| - | Batch files are added to aid in building the demo program. First clean the demo program by double-clicking the file "\Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Prog**\cmd\**clean.bat**". Next, build the demo program by double-clicking the file "\Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Prog**\cmd\**build.bat**". The output should look like: | ||
| - | <code> | ||
| - | +++ Assembling [cstart.o] | ||
| - | +++ Compiling [main.o] | ||
| - | ... | ||
| - | +++ Linking [demoprog_olimex_lpc_l2294_20mhz.elf] | ||
| - | ... | ||
| - | +++ Build complete [demoprog_olimex_lpc_l2294_20mhz.sx] | ||
| - | </code> | ||
| - | |||
| - | The output file is | ||
| - | * \Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Prog**\bin\**demoprog_olimex_lpc_l2294_20mhz.sx** | ||
| - | |||
| - | ===== Firmware update procedure ===== | ||
| - | To download the demo program \Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Prog**\bin\**demoprog_olimex_lpc_l2294_20mhz.sx** using the bootloader, follow the instructions in the following links, depending on the communication interface you intend to use: | ||
| - | |||
| - | * [[manual:uart_demo|Firmware updates using the UART communication interface]] | ||
| - | * [[manual:can_demo|Firmware updates using the CAN communication interface]] | ||
| - | | ||
| - | ===== Programming external flash EEPROM ===== | ||
| - | The Olimex LPC-L2294 board has an additional 2MB of external Intel C3 flash. This demo includes support for programming this external flash EEPROM with the bootloader. This also demonstrates the hook function functionality through which additional memory devices can be supported in the bootloader. To enable programming of the external flash EEPROM, open "\Target\Demo\ARM7_LPC2000_Olimex_LPC_L2294_GCC\**Boot**\blt_conf.h" and change the value of BOOT_NVM_HOOKS_ENABLE: | ||
| - | |||
| - | <code> | ||
| - | #define BOOT_NVM_HOOKS_ENABLE (1) | ||
| - | </code> | ||
| - | |||
| - | After this, follow the steps outlined above, to rebuild and reprogram the bootloader and user program. | ||
manual/demos/olimex_lpc_l2294_gcc.1432310758.txt.gz ยท Last modified: 2019/09/24 22:13 (external edit)
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