121 lines
4.1 KiB
Plaintext
121 lines
4.1 KiB
Plaintext
README
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======
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This README discusses issues/thoughts unique to NuttX configuration(s) for the
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ET-STM32 Stamp board from Futurlec (https://www.futurlec.com/ET-STM32_Stamp.shtml).
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Microprocessor: 32-bit ARM Cortex M3 at 72MHz STM32F103RET6
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Memory: 512 KB Flash and 64 KB SRAM
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I/O Pins Out: 48
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ADCs: 16 (at 12-bit resolution)
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DACs: 2 (at 12-bit resolution)
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Peripherals: RTC, 4 timers, 2 I2Cs, 3 SPI ports, 1 on-board UART (upto 5 channels)
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Other: Sleep, stop, and standby modes; serial wire debug and JTAG interfaces
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Please see link below for board specific details:
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https://www.futurlec.com/ET-STM32_Stamp_Technical.shtml
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This configuration supports the ET-STM32 Stamp module.
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Contents
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========
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- Development Environment
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- Flashing/Programming
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- Configurations
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Development Environment
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=======================
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Either Linux (recommended), Mac or Cygwin on Windows can be used for the development
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environment. The source has been built only using the GNU (Cortex M) toolchain.
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Other toolchains will likely cause problems.
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WSL (Windows Subsystem for Linux) was used to develop, compile and test the NuttX
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build for the ET-STM32 Stamp platform.
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Flashing/Programming
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====================
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Prerequisites:
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1. The ET-STM32 Stamp module from Futurlec.
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2. An RS232 connection cable such as the one in this link: (Part code: RS232CONN):
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https://www.futurlec.com/DevBoardAccessories.shtml
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It has a 4-pin connection header on one end and an RS-232 (DB9) female connector on
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the other. The 4-pin connector can be directly plugged onto the Stamp module.
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3. An RS232 to USB converter cable. Ensure that a suitable driver is installed for
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the converter cable. When the cable is plugged in (for example), my PC lists the
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assigned port with this name: "USB-SERIAL CH340 (COM2)".
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Assuming Windows 10, navigate to: This PC -> Manage -> Device Manager -> Ports.
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4. ST's Flash loader demonstrator tool. You can download it from here:
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https://www.st.com/en/development-tools/flasher-stm32.html
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To install the NuttX firmware (nuttx.bin) on the ET-STM32 Stamp:
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1. First, power the Stamp module with a 3.3 VDC power supply. I made my own
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Stamp module fixture using a 3.3 VDC switching regulator, a prototype PCB card
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and some solder.
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2. Insert the RS232CONN into the 4-pin on-board header. The other end should be
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connected to the USB port of the PC using the RS232-USB converter.
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3. Set the BOOT1 jumper on your board to the ISP position.
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4. Press the BOOT0 switch. The green "BOOT0=1" LED should light up.
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5. Reset the board by pressing on the RESET button.
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6. Using the ST Flash loader demonstrator to download the NuttX binary image.
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7. Wait until programming is completed and press "Finish". Toggle the
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BOOT0 switch again. Reset the board.
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You will now be presented with the NuttShell (NSH). Enjoy.
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Configurations
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==============
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Information Common to All Configurations
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----------------------------------------
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The ET-STM32 Stamp configuration is maintained in a sub-directory and can be
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selected as follow:
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tools/configure.sh et-stm32-stamp:<subdir>
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Before building, make sure the PATH environment variable includes the
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correct path to the directory than holds your toolchain binaries.
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And then build NuttX by simply typing the following. At the conclusion of
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the make, the nuttx binary will reside in an ELF file called, simply, nuttx.
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make
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The <subdir> that is provided above as an argument to the tools/configure.sh
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must be in one of the following.
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NOTES:
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1. These configurations use the mconf-based configuration tool. To
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change any of these configurations using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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Configuration Sub-directories
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-----------------------------
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nsh:
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This configuration directory provide the basic NuttShell (NSH).
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A serial console is provided on USART1.
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