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ZigBee module ?
this could be a game changer.
how many ZigBee compatible MCUs are out there? -
• #3
An Espruino build for this board would be really cool. The IMU is the same as in the Puck and there's also a flash chip!!
As a Bangle.js 2 owner, I'm also very intrigued by the concept of having a file system on the SPI flash that can be accessed via BLE through the web IDE. This would enable really cool data logging options on the simpler, cheaper espruino boards.
Is this hard to implement? You'd require some kind of simplified, stripped-down build of Bangle.js 2 or is there a simpler way?
In this context I also thought about spinning my own Puck PCB with the MDBT42 and for example a GD25Q16 flash chip, since I have some laying around here. -
• #5
I have a build working based of the NRF52840DK.py and changing the console to bluetooth.
Any thoughts or points on how to get the console going on the built in USB as a serial device?
I have tried the 'EV_USBSERIAL' without any luck, is that working on any of the other nRF52840 boards?
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yes, works for me on nrf52840 dongle and also Particle XENON, there is no special trick except this line https://gist.github.com/fanoush/c081c1d7c8eb2a4562785bbb684f661e#file-nrf52840dongle-py-L43 which is in NRF52840DK board file too.
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I finally got a couple of these and found the time to look into making a board file.
#!/bin/false # This file is part of Espruino, a JavaScript interpreter for Microcontrollers # # Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk> # # This Source Code Form is subject to the terms of the Mozilla Public # License, v. 2.0. If a copy of the MPL was not distributed with this # file, You can obtain one at http://mozilla.org/MPL/2.0/. # # ---------------------------------------------------------------------------------------- # This file contains information for a specific board - the available pins, and where LEDs, # Buttons, and other in-built peripherals are. It is used to build documentation as well # as various source and header files for Espruino. # ---------------------------------------------------------------------------------------- ''' source ./scripts/provision.sh ALL rm bin/*.hex make clean && BOARD=XIAOBLE RELEASE=1 make uf2conv.py ./bin/*.hex -c -f 0xADA52840 mv flash.uf2 ~/Desktop/ ''' import pinutils; info = { 'name' : "Seeed Xiao BLE", 'link' : [ "https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html" ], 'default_console' : "EV_SERIAL1", 'default_console_tx' : "D6", 'default_console_rx' : "D7", 'default_console_baudrate' : "9600", 'variables' : 14000, # How many variables are allocated for Espruino to use. RAM will be overflowed if this number is too high and code won't compile. # 'bootloader' : 1, 'binary_name' : 'espruino_%v_xiaoble.hex', 'build' : { 'optimizeflags' : '-Os', 'libraries' : [ 'BLUETOOTH', # 'NET', 'GRAPHICS', # 'NFC', 'NEOPIXEL', 'JIT', ], 'makefile' : [ 'DEFINES += -DCONFIG_GPIO_AS_PINRESET', # Allow the reset pin to work 'DEFINES += -DNRF_USB=1 -DUSB', 'DEFINES += -DNEOPIXEL_SCK_PIN=33 -DNEOPIXEL_LRCK_PIN=34', # nRF52840 needs LRCK pin defined for neopixel 'DEFINES += -DBLUETOOTH_NAME_PREFIX=\'"XIAOBLE"\'', 'DEFINES += -DSPIFLASH_READ2X', # Read SPI flash at 2x speed using MISO and MOSI for IO 'DEFINES += -DESPR_UNICODE_SUPPORT=1', 'NRF_SDK15=1', ] } }; chip = { 'part' : "NRF52840", 'family' : "NRF52", 'package' : "AQFN73", 'ram' : 256, 'flash' : 1024, 'speed' : 64, 'usart' : 1, 'spi' : 1, 'i2c' : 2, 'adc' : 1, 'dac' : 0, 'saved_code' : { 'address' : ((0xf4 - 2 - 96) * 4096), # Bootloader at 0xF4000 'page_size' : 4096, 'pages' : 96, 'flash_available' : 1024 - ((0x26 + 0x20 + 2 + 96)*4) # Softdevice 140 uses 38 pages of flash, bootloader 8, FS 2, code 10. Each page is 4 kb. }, }; devices = { 'LED1' : { 'pin' : 'H0' }, # Pin negated in software 'LED2' : { 'pin' : 'H1' }, # Pin negated in software 'LED3' : { 'pin' : 'H2' }, # Pin negated in software # Pin D33 and D34 are used for clock when driving neopixels - as not specifying a pin seems to break things 'SPIFLASH' : { 'pin_cs' : 'H25', 'pin_sck' : 'H21', 'pin_mosi' : 'H20', 'pin_miso' : 'H24', 'pin_wp' : 'H22', 'pin_rst' : 'H23', 'size' : 4096*512, # 2MB 'memmap_base' : 0x60000000 # map into the address space (in software) } }; # left-right, or top-bottom order board = { }; # schematic at https://files.seeedstudio.com/wiki/XIAO-BLE/Seeed-Studio-XIAO-nRF52840-Sense-v1.1.pdf def get_pins(): pins = [ { "name":"PD0", "sortingname":"D00", "port":"D", "num":"2", "functions":{}, "csv":{} }, { "name":"PD1", "sortingname":"D01", "port":"D", "num":"3", "functions":{}, "csv":{} }, { "name":"PD2", "sortingname":"D02", "port":"D", "num":"28", "functions":{}, "csv":{} }, { "name":"PD3", "sortingname":"D03", "port":"D", "num":"29", "functions":{}, "csv":{} }, { "name":"PD4", "sortingname":"D04", "port":"D", "num":"4", "functions":{}, "csv":{} }, { "name":"PD5", "sortingname":"D05", "port":"D", "num":"5", "functions":{}, "csv":{} }, { "name":"PD6", "sortingname":"D06", "port":"D", "num":"43", "functions":{}, "csv":{} }, { "name":"PD7", "sortingname":"D07", "port":"D", "num":"44", "functions":{}, "csv":{} }, { "name":"PD8", "sortingname":"D08", "port":"D", "num":"45", "functions":{}, "csv":{} }, { "name":"PD9", "sortingname":"D09", "port":"D", "num":"46", "functions":{}, "csv":{} }, { "name":"PD10", "sortingname":"D10", "port":"D", "num":"47", "functions":{}, "csv":{} }, { "name":"PA0", "sortingname":"A00", "port":"A", "num":"2", "functions":{ "ADC1_IN0":0 }, "csv":{} }, { "name":"PA1", "sortingname":"A01", "port":"A", "num":"3", "functions":{ "ADC1_IN1":0 }, "csv":{} }, { "name":"PA2", "sortingname":"A02", "port":"A", "num":"28", "functions":{ "ADC1_IN2":0 }, "csv":{} }, { "name":"PA3", "sortingname":"A03", "port":"A", "num":"29", "functions":{ "ADC1_IN3":0 }, "csv":{} }, { "name":"PA4", "sortingname":"A04", "port":"A", "num":"4", "functions":{ "ADC1_IN4":0 }, "csv":{} }, { "name":"PA5", "sortingname":"A05", "port":"A", "num":"5", "functions":{ "ADC1_IN5":0 }, "csv":{} }, { "name":"PH0", "sortingname":"H0", "port":"H", "num":"26", "functions":{"NEGATED":0}, "csv":{} }, # LED1 { "name":"PH1", "sortingname":"H1", "port":"H", "num":"30", "functions":{"NEGATED":0}, "csv":{} }, # LED2 { "name":"PH2", "sortingname":"H2", "port":"H", "num":"6", "functions":{"NEGATED":0}, "csv":{} }, # LED3 { "name":"PH25", "sortingname":"H25", "port":"H", "num":"25", "functions":{}, "csv":{} }, { "name":"PH21", "sortingname":"H21", "port":"H", "num":"21", "functions":{}, "csv":{} }, { "name":"PH20", "sortingname":"H20", "port":"H", "num":"20", "functions":{}, "csv":{} }, { "name":"PH24", "sortingname":"H24", "port":"H", "num":"24", "functions":{}, "csv":{} }, { "name":"PH22", "sortingname":"H22", "port":"H", "num":"22", "functions":{}, "csv":{} }, { "name":"PH23", "sortingname":"H23", "port":"H", "num":"23", "functions":{}, "csv":{} }, ]; # everything is non-5v tolerant for pin in pins: pin["functions"]["3.3"]=0; return pinsnot all pin assignments are implemented yet (especially on the sense version the IMU and the mic) but everything works so far. The QSPI flash is also connected although I'm not really sure how to test if the entirety of the flash is usable.
It's also compatible with the built-in adafruit bootloader, so if you use the u2conv.py script you can create a uf2 file you can just drag and drop onto the xiao ble to flash espruino on it (no need for SWD).
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Ah I didn't know that was the case :D I thought H was just a way to differentiate unexposed pins (vs D which are exposed).
They do work though, and I guess it's somewhat an advantage that a user doesn't get to accidentally configure a pin that they're not supposed to change (like those for QSPI for example). Or would there be any issues with using non-existent ports?
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I've experimented a bit more and yeah, the extra H port is messing up some of the pins that Espruino expects are contiguous.
I"ve since made a board def that's a lot simpler.
#!/bin/false # This file is part of Espruino, a JavaScript interpreter for Microcontrollers # # Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk> # # This Source Code Form is subject to the terms of the Mozilla Public # License, v. 2.0. If a copy of the MPL was not distributed with this # file, You can obtain one at http://mozilla.org/MPL/2.0/. # # ---------------------------------------------------------------------------------------- # This file contains information for a specific board - the available pins, and where LEDs, # Buttons, and other in-built peripherals are. It is used to build documentation as well # as various source and header files for Espruino. # ---------------------------------------------------------------------------------------- """ source ./scripts/provision.sh ALL rm bin/*.hex make clean && BOARD=XIAOBLE RELEASE=1 make uf2conv.py ./bin/*.hex -c -f 0xADA52840 mv flash.uf2 ~/Desktop/ """ import pinutils info = { "name": "Seeed Xiao BLE", "link": ["https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html"], "default_console": "EV_USBSERIAL", # 'default_console' : "EV_SERIAL1", # 'default_console_tx' : "D6", # 'default_console_rx' : "D7", # 'default_console_baudrate' : "9600", "variables": 14000, # How many variables are allocated for Espruino to use. RAM will be overflowed if this number is too high and code won't compile. # 'bootloader' : 1, "binary_name": "espruino_%v_xiaoble.hex", "build": { "optimizeflags": "-Os", "libraries": [ "BLUETOOTH", # 'NET', "GRAPHICS", # 'NFC', "NEOPIXEL", "JIT", ], "makefile": [ "DEFINES += -DESPR_LSE_ENABLE", # Ensure low speed external osc enabled "DEFINES += -DCONFIG_GPIO_AS_PINRESET", # Allow the reset pin to work "DEFINES += -DNRF_USB=1 -DUSB", "DEFINES += -DNEOPIXEL_SCK_PIN=33 -DNEOPIXEL_LRCK_PIN=34", # nRF52840 needs LRCK pin defined for neopixel "DEFINES += -DBLUETOOTH_NAME_PREFIX='\"XIAOBLE\"'", "DEFINES += -DSPIFLASH_READ2X", # Read SPI flash at 2x speed using MISO and MOSI for IO "DEFINES += -DESPR_UNICODE_SUPPORT=1", "DEFINES += -DNRF_SDH_BLE_GATT_MAX_MTU_SIZE=131", # 23+x*27 rule as per https://devzone.nordicsemi.com/f/nordic-q-a/44825/ios-mtu-size-why-only-185-bytes # 'DEFINES += -DPIN_NAMES_DIRECT=1', # Package skips out some pins, so we can't assume each port starts from 0 "LDFLAGS += -Xlinker --defsym=LD_APP_RAM_BASE=0x2ec0", # set RAM base to match MTU "NRF_SDK15=1", ], }, } chip = { "part": "NRF52840", "family": "NRF52", "package": "AQFN73", "ram": 256, "flash": 1024, "speed": 64, "usart": 1, "spi": 1, "i2c": 2, "adc": 1, "dac": 0, "saved_code": { "address": ((0xF4 - 2 - 96) * 4096), # Bootloader at 0xF4000 "page_size": 4096, "pages": 96, "flash_available": 1024 - ( (0x26 + 0x20 + 2 + 96) * 4 ), # Softdevice 140 uses 38 pages of flash, bootloader 8, FS 2, code 10. Each page is 4 kb. }, } devices = { "LED1": {"pin": "D26"}, # Pin negated in software "LED2": {"pin": "D30"}, # Pin negated in software "LED3": {"pin": "D6"}, # Pin negated in software # Pin D33 and D34 are used for clock when driving neopixels - as not specifying a pin seems to break things "BAT": { "pin_charging": "D17", # active low "pin_voltage": "D31", }, "NFC": {"pin_a": "D9", "pin_b": "D10"}, "SPIFLASH": { "pin_cs": "D25", "pin_sck": "D21", "pin_mosi": "D20", "pin_miso": "D24", "pin_wp": "D22", "pin_rst": "D23", "size": 4096 * 512, # 2MB "memmap_base": 0x60000000, # map into the address space (in software) }, } # left-right, or top-bottom order board = {} # schematic at https://files.seeedstudio.com/wiki/XIAO-BLE/Seeed-Studio-XIAO-nRF52840-Sense-v1.1.pdf # pinout sheet https://files.seeedstudio.com/wiki/XIAO-BLE/XIAO-nRF52840-pinout_sheet.xlsx # see also https://github.com/Seeed-Studio/Adafruit_nRF52_Arduino/blob/master/variants/Seeed_XIAO_nRF52840/variant.h def get_pins(): pins = pinutils.generate_pins(0, 47) # 48 General Purpose I/O Pins. pinutils.findpin(pins, "PD2", True)["functions"]["ADC1_IN0"] = 0 pinutils.findpin(pins, "PD3", True)["functions"]["ADC1_IN1"] = 0 pinutils.findpin(pins, "PD4", True)["functions"]["ADC1_IN2"] = 0 pinutils.findpin(pins, "PD5", True)["functions"]["ADC1_IN3"] = 0 pinutils.findpin(pins, "PD9", True)["functions"]["NFC1"] = 0 pinutils.findpin(pins, "PD10", True)["functions"]["NFC2"] = 0 pinutils.findpin(pins, "PD17", True)["functions"]["NEGATED"] = 0 pinutils.findpin(pins, "PD26", True)["functions"]["NEGATED"]=0; pinutils.findpin(pins, "PD28", True)["functions"]["ADC1_IN4"] = 0 pinutils.findpin(pins, "PD29", True)["functions"]["ADC1_IN5"] = 0 pinutils.findpin(pins, "PD31", True)["functions"]["ADC1_IN7"] = 0 # D13 PIN_CHARGING_CURRENT # battery charging current see https://wiki.seeedstudio.com/XIAO_BLE/#battery-charging-current # HIGH: 100mA, LOW: 50mA # D14 VBAT_ENABLE # enable battery voltage reading by digitalWrite(D14, false) # D17 CHG # get charge state via digitalRead(D17) # HIGHT: not charging, LOW: charging # D31 PIN_VBAT # everything is non-5v tolerant for pin in pins: pin["functions"]["3.3"] = 0 return pins
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About
Seeed XIAO BLE
Posted by
@parasquid
Just wanted to mention that Seeed Studio put an NRF52840 in the XIAO form factor:
https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html
Would be a good stopgap until we finally get an official MDBT50Q breakout with Espruino programmed in, if only it's in stock :P