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Merge pull request adafruit#2596 from hierophect/stm32-espruino-pico
STM32: Espruino Pico
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‎.github/workflows/build.yml

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@@ -146,6 +146,7 @@ jobs:
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- "electronut_labs_blip"
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- "electronut_labs_papyr"
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- "escornabot_makech"
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- "espruino_pico"
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- "feather_bluefruit_sense"
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- "feather_m0_adalogger"
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- "feather_m0_basic"

‎ports/stm32f4/boards/STM32F401xd_fs.ld

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/*
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GNU linker script for STM32F401 with bootloader (such as the Meowbit)
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*/
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 384K /* entire flash */
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FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0 */
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FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 48K /* sectors 1,2,3 are 16K */
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FLASH_TEXT (rx) : ORIGIN = 0x08010000, LENGTH = 320K /* sector 4 is 64K, sectors 5,6,7 are 128K */
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K
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}
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/* produce a link error if there is not this amount of RAM for these sections */
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_minimum_stack_size = 2K;
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_minimum_heap_size = 16K;
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/* Define tho top end of the stack. The stack is full descending so begins just
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above last byte of RAM. Note that EABI requires the stack to be 8-byte
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aligned for a call. */
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_estack = ORIGIN(RAM) + LENGTH(RAM);
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/* RAM extents for the garbage collector */
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_ram_start = ORIGIN(RAM);
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_ram_end = ORIGIN(RAM) + LENGTH(RAM);
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ENTRY(Reset_Handler)
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/* define output sections */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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/* This first flash block is 16K annd the isr vectors only take up
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about 400 bytes. Micropython pads this with files, but this didn't
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work with the size of Circuitpython's ff object. */
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. = ALIGN(4);
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} >FLASH_ISR
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/* The program code and other data goes into FLASH */
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.text :
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{
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. = ALIGN(4);
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*(.text*) /* .text* sections (code) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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/* *(.glue_7) */ /* glue arm to thumb code */
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/* *(.glue_7t) */ /* glue thumb to arm code */
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. = ALIGN(4);
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_etext = .; /* define a global symbol at end of code */
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} >FLASH_TEXT
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* This is the initialized data section
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The program executes knowing that the data is in the RAM
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but the loader puts the initial values in the FLASH (inidata).
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It is one task of the startup to copy the initial values from FLASH to RAM. */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
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} >RAM AT> FLASH_TEXT
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/* Uninitialized data section */
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.bss :
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{
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. = ALIGN(4);
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_sbss = .; /* define a global symbol at bss start; used by startup code */
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end; used by startup code and GC */
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} >RAM
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/* this is to define the start of the heap, and make sure we have a minimum size */
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.heap :
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{
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. = ALIGN(4);
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. = . + _minimum_heap_size;
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. = ALIGN(4);
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} >RAM
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/* this just checks there is enough RAM for the stack */
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.stack :
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{
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. = ALIGN(4);
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. = . + _minimum_stack_size;
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. = ALIGN(4);
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} >RAM
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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‎ports/stm32f4/boards/STM32F401_boot.ld renamed to ‎ports/stm32f4/boards/STM32F401xe_boot.ld

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‎ports/stm32f4/boards/STM32F401_fs.ld renamed to ‎ports/stm32f4/boards/STM32F401xe_fs.ld

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‎ports/stm32f4/boards/espruino_pico/README.md

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# Flashing the Espruino Pico
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The Espruino Pico is normally updated via a bootloader activated by the Espruino web app. This approach is not practical for Circuitpython as it takes too much space from the internal filesystem - thus, you will need to follow the instructions for advanced reflashing using the built-in ROM bootloader on all STM32F4 MCUs (instructions sourced from https://www.espruino.com/Pico#advanced-reflashing)
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- Short out the BOOT0/BTN solder jumper on the back of the board - you can do this by drawing over it with a pencil.
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- Install ST's DFU utility on Windows, or dfu-util for Mac or Linux
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- **Mac**: install with Homebrew: `brew install dfu-util`
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- **Linux**: install with apt-get: `sudo apt-get install dfu-util`
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- **Windows**: download [ST's application](https://www.st.com/en/development-tools/stsw-stm32080.html) or install the Linux subsystem for Windows 10 and follow the linux instructions.
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- Hold down the Pico's button while plugging it into USB (when overwriting Espruino's default firmware)
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- Navigate to the same directory as your firmware.bin file for Circuitpython and run the following command: `sudo dfu-util -a 0 -s 0x08000000 -D firmware.bin` or use the ST utility on Windows.
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- Restart the board.
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To reinstall Espruino, follow the same steps with the latest Espruino Pico binary from espruino.com/binaries. This will reinstall the usual Espruino bootloader. You must un-short the BOOT0/BTN jumper to re-use the original Espruino Bootloader again. If you used a Pencil mark then you may need to use cleaning fluid and a small brush to totally clear out the graphite.

‎ports/stm32f4/boards/espruino_pico/board.c

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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "boards/board.h"
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#include "mpconfigboard.h"
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void board_init(void) {
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}
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bool board_requests_safe_mode(void) {
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return false;
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}
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void reset_board(void) {
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}

‎ports/stm32f4/boards/espruino_pico/mpconfigboard.h

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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Lucian Copeland for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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//Micropython setup
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#define MICROPY_HW_BOARD_NAME "Espruino Pico"
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#define MICROPY_HW_MCU_NAME "STM32F401xD"
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#define FLASH_SIZE (0x60000)
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#define FLASH_PAGE_SIZE (0x4000)
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#define AUTORESET_DELAY_MS 500
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#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
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#define BOARD_OSC_DIV 8
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‎ports/stm32f4/boards/espruino_pico/mpconfigboard.mk

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USB_VID = 0x239A
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USB_PID = 0x808E
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USB_PRODUCT = "Espruino Pico"
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USB_MANUFACTURER = "Espruino"
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USB_DEVICES = "CDC,MSC"
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INTERNAL_FLASH_FILESYSTEM = 1
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LONGINT_IMPL = NONE
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MCU_SERIES = m4
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MCU_VARIANT = stm32f4
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MCU_SUB_VARIANT = stm32f401xe
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MCU_PACKAGE = 48
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CMSIS_MCU = STM32F401xE
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LD_FILE = boards/STM32F401xd_fs.ld # use for internal flash
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‎ports/stm32f4/boards/espruino_pico/pins.c

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#include "shared-bindings/board/__init__.h"
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STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_B15), MP_ROM_PTR(&pin_PB15) },
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{ MP_ROM_QSTR(MP_QSTR_B14), MP_ROM_PTR(&pin_PB14) },
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{ MP_ROM_QSTR(MP_QSTR_B13), MP_ROM_PTR(&pin_PB13) },
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{ MP_ROM_QSTR(MP_QSTR_B10), MP_ROM_PTR(&pin_PB10) },
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{ MP_ROM_QSTR(MP_QSTR_B1), MP_ROM_PTR(&pin_PB01) },
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{ MP_ROM_QSTR(MP_QSTR_A7), MP_ROM_PTR(&pin_PA07) },
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{ MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_PA06) },
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{ MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PA05) },
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{ MP_ROM_QSTR(MP_QSTR_B3), MP_ROM_PTR(&pin_PB03) },
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{ MP_ROM_QSTR(MP_QSTR_B4), MP_ROM_PTR(&pin_PB04) },
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{ MP_ROM_QSTR(MP_QSTR_B5), MP_ROM_PTR(&pin_PB05) },
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{ MP_ROM_QSTR(MP_QSTR_B6), MP_ROM_PTR(&pin_PB06) },
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{ MP_ROM_QSTR(MP_QSTR_B7), MP_ROM_PTR(&pin_PB07) },
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{ MP_ROM_QSTR(MP_QSTR_A8), MP_ROM_PTR(&pin_PA08) },
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{ MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PA04) },
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{ MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_PA03) },
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{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PA02) },
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{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PA01) },
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{ MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA00) },
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{ MP_ROM_QSTR(MP_QSTR_A10), MP_ROM_PTR(&pin_PA10) },
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{ MP_ROM_QSTR(MP_QSTR_B9), MP_ROM_PTR(&pin_PB09) },
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{ MP_ROM_QSTR(MP_QSTR_B8), MP_ROM_PTR(&pin_PB08) },
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{ MP_ROM_QSTR(MP_QSTR_BTN), MP_ROM_PTR(&pin_PC13) },
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{ MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_PB02) },
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{ MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_PB12) },
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};
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MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

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