基于STM32 MCU的flashrom serprog LPC编程器

# stm32-vserprog-lpc: ## flashrom serprog LPC programmer based on STM32 MCU & USB CDC protocol. **This project based on [`stm32-vserprog`](https://github.com/dword1511/stm32-vserprog) and [`frser-teensyflash`](https://github.com/urjaman/frser-teensyflash) projects.** * * * ### Features * Based on open-source Cortex-M3 library [`libopencm3`](https://github.com/libopencm3/libopencm3). * `flashrom` serprog protocol (see [`flashrom wiki`](https://www.flashrom.org/Serprog)). * * * ### Installation 1. Install `stm32flash` and the `gcc-arm-none-eabi` toolchain. On Debian, simply do the following: ```bash $ apt-get install stm32flash gcc-arm-none-eabi ``` 3. Clone and compile. Simply type (change the board name accordingly, for details see the header of the `Makefile` or just type `make`): ```bash git clone https://github.com/wosk/stm32-vserprog-lpc.git make BOARD=stm32f103-ugly ``` 4. Program. Program via USB-UART adapter need pulled up _BOOT0_ pin and pulled low _BOOT1_ pin (See section 3.4 [`reference manual STM32F1xxxx `](http://www.st.com/resource/en/reference_manual/CD00171190.pdf)). ```bash make BOARD=stm32f103-ugly flash ``` Do not forget to pull low _BOOT0_ pin after flashing for run firmware. * * * ### Usage #### Hardware side For connecting PLCC LPC flash need: * PLCC 32 pin DIP socket (DS1032-32D) * 9 necessary wires (for Vss, Vdd, LFRAME#, LCLK, RST#, LAD[3:0]) * 3 possibly necessary wires (for connect RST# with INIT#, Vdd (pin 25) with Vdd (pin 32), Vss (pin 16) with Vss (pin 28)) * 1 resistor about 150...1000 Ohm (for pull up WP# and TBL# for disable write protection) The final scheme: <img src="./doc/connection.svg" alt="scheme"/> #### Software side The following assumes Linux platform, and that the programmer appears as `/dev/ttyACM0`. 1. To read a flash chip: ```bash flashrom -p serprog:dev=/dev/ttyACM0 -r file-to-save.bin -c chip-name ``` 2. To write a flash chip: ```bash flashrom -p serprog:dev=/dev/ttyACM0 -w file-to-load.bin -c chip-name ``` * Flash chips are checked and blocks that are not empty are automatically erased. * Images are verified after writing automatically. * The whole process can take a few minutes. 3. To erase a flash chip: ```bash flashrom -p serprog:dev=/dev/ttyACM0 -E -c chip-name ``` * * * ### Tested * Winbond W39V040BPZ 512 kB (read 19 sec, erase 26 sec, write 6 min) * SST 49LF040B 512 kB (read 18 sec, erase 21 sec, write 6 min) ### Known bugs * Probing chip (without argument "-c chipname") not work properly. ### Problems? 1. If you encountered something like "`Error: Cannot open serial port: Device or resource busy`", please try to stop or remove `ModemManager`. 1. Check your wirings and `flashrom` version. Do not forget to power the flash chip itself if operating on a breadboard or prototype board. 1. If you are sure it is caused by bugs in the programmer's firmware, please [open a new ticket](https://github.com/wosk/stm32-vserprog-lpc/issues) and provide details, e.g. the board you are using and `flashrom -VVV`'s output. I appreciate your feedback.