https://gregdavill.github.io/OrangeCrab/

https://github.com/gregdavill/OrangeCrab

[Mon Sep 14 13:46:12 2020] usb 2-2.3: new full-speed USB device number 8 using xhci_hcd
[Mon Sep 14 13:46:12 2020] usb 2-2.3: New USB device found, idVendor=1209, idProduct=5af0, bcdDevice= 1.01
[Mon Sep 14 13:46:12 2020] usb 2-2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[Mon Sep 14 13:46:12 2020] usb 2-2.3: Product: OrangeCrab r0.2 DFU Bootloader v3.1
[Mon Sep 14 13:46:12 2020] usb 2-2.3: Manufacturer: GsD

Microwatt with Linux on OrangeCrab

https://codeconstruct.com.au/docs/microwatt-orangecrab/

⦗OSS CAD Suite⦘ dpavlin@klin:/klin/FPGA/microwatt$ make microwatt.bit 2>&1 | tee ~/tmp/build1.txt

http://www.kinetic.co.uk/TrilbyAbout.php

There is https site, but it has broken css

KINETIC AVIONICS

TRILBY Rev.2.23 2015

components

from schematic Trilby2V23PUBLIC.pdf

ADG918

https://www.analog.com/en/products/adg918.html

Wideband, 43 dB Isolation at 1 GHz, CMOS 1.65 V to 2.75 V, 2:1 Mux/SPDT Switches

TDA18219HN

https://www.nxp.com/part/TDA18219HN#/

Silicon tuner for terrestrial and cable digital TV reception

LTC2226CUH

https://eu.mouser.com/ProductDetail/Analog-Devices/LTC2226CUH

Analog to Digital Converters - ADC LTC2226 - 12-Bit, 25Msps Low Power 3V ADC

LFE5U-85F-BG381

• 45F on my board

jumpers

J456, 1-2 IS PI 5V AND 2-3 IS USB 5V

J451 - JTAG SELECT - REMOVE LINK FOR USB
J450 - JTAG SELECT - REMOVE LINK WHEN USING LATTICE CABLE

J30 - CFG_0 - by default pull up, jumper pulls them down
J31 - CFG_1
J32 - CFG_2

J33 - PROGRAMN - reprogram FPGA

J29

1 3V3
2 TDI
3 TMS
4 TCK
5 TDO
6 GND

J26 - INSTALL TO ENABLE EEPROM WRITING

TP18 GND
TP19 GND

J458 - GPIO

from /nuc/rpi/trilby/Trilby_v_1_03_project/impl1/trilby_test_impl1.pad

rpi setup

enable spi, i2c in raspi-config

pi@trilby:~/linux-gpio-pinout $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

44 - example i2c device in fpga
68 - rtc

rtc

root@trilby:/home/pi# echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
root@trilby:/home/pi#
[Fri Dec 24 15:02:31 2021] i2c i2c-1: new_device: Instantiated device ds1307 at 0x68
[Fri Dec 24 15:02:31 2021] rtc-ds1307 1-0068: registered as rtc0
[Fri Dec 24 15:02:31 2021] rtc-ds1307 1-0068: setting system clock to 2000-01-01T02:29:49 UTC (946693789)

root@trilby:/home/pi# hwclock -r
2021-12-24 15:02:37.028752+00:00

openocd

pi@trilby:~/openocd-rpi2-stm32 $ grep -v '^#' trilby.cfg

adapter driver bcm2835gpio

bcm2835gpio_peripheral_base 0x3F000000

bcm2835gpio_speed_coeffs 146203 36

bcm2835gpio_jtag_nums 23 27 22 24

adapter speed 50
transport select jtag

pi@trilby:~/openocd-rpi2-stm32 $ openocd -f trilby.cfg
Open On-Chip Debugger 0.11.0-rc2
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
jtag
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : BCM2835 GPIO JTAG/SWD bitbang driver
Info : clock speed 50 kHz
Warn : There are no enabled taps.  AUTO PROBING MIGHT NOT WORK!!
Info : JTAG tap: auto0.tap tap/device found: 0x41112043 (mfg: 0x021 (Lattice Semi.), part: 0x1112, ver: 0x4)
Warn : AUTO auto0.tap - use "jtag newtap auto0 tap -irlen 2 -expected-id 0x41112043"
Error: IR capture error at bit 2, saw 0x3fffffffffffff05 not 0x...3
Warn : Bypassing JTAG setup events due to errors
Warn : gdb services need one or more targets defined

video

• https://www.youtube.com/watch?v=_1yrxrl61o4
• https://www.youtube.com/watch?v=kRTs6B-kEOE

git

dpavlin@klin:/klin/FPGA/CFU-Playground$ git remote -v
origin  https://github.com/google/CFU-Playground.git (fetch)
origin  https://github.com/google/CFU-Playground.git (push)
dpavlin@klin:/klin/FPGA/CFU-Playground$ git submodule init
dpavlin@klin:/klin/FPGA/CFU-Playground$ git submodule update

ulx3s board

https://github.com/litex-hub/litex-boards/blob/master/litex_boards/targets/radiona_ulx3s.py

dpavlin@klin:/klin/FPGA/CFU-Playground$ find . -name radiona_ulx3s.py
./third_party/python/litex_boards/litex_boards/targets/radiona_ulx3s.py
./third_party/python/litex_boards/litex_boards/platforms/radiona_ulx3s.py
# edit fpga settings here
dpavlin@klin:/klin/FPGA/CFU-Playground$ vi ./third_party/python/litex_boards/litex_boards/targets/radiona_ulx3s.py

modifications for 85F litex-85f.diff

build

you really need riscv64 toolchain from https://github.com/sifive/freedom-tools/releases/tag/v2020.04.0-Toolchain.Only

dpavlin@klin:/klin/FPGA/CFU-Playground/proj$ cat build.sh
#!/bin/sh -xe

echo https://github.com/google/CFU-Playground

export PATH=/opt/riscv64-unknown-elf-gcc-8.3.0-2020.04.1-x86_64-linux-ubuntu14/bin/:$PATH
export TARGET=radiona_ulx3s
export UART_SPEED=115200
time make prog load

sumulation

dpavlin@klin:/klin/FPGA/CFU-Playground/proj/avg_pdti8$ time make PLATFORM=sim load -j 4

boot over serial using network

host with ulx3s connected

root@pihdmi:/home/pi# socat /dev/ttyUSB0,b115200,raw,echo=0 TCP:10.60.0.92:2003

machine running litex

dpavlin@klin:/klin/FPGA/CFU-Playground/proj/hps_accel$ socat TCP-LISTEN:2003 PTY,link=ttyV2,raw

1. re-run terminal with new virtal ttyV2

dpavlin@klin:/klin/FPGA/CFU-Playground/proj/hps_accel$ /klin/FPGA/CFU-Playground/soc/bin/litex_term --speed 115200  --serial-boot --kernel /klin/FPGA/CFU-Playground/proj/hps_accel/build/software.bin ttyV2

litex> serialboot
Booting from serial...
Press Q or ESC to abort boot completely.
sL5DdSMmkekro
[LXTERM] Received firmware download request from the device.
[LXTERM] Uploading /klin/FPGA/CFU-Playground/proj/hps_accel/build/software.bin to 0x40000000 (1313688 bytes)...
[LXTERM] Upload complete (9.9KB/s).
[LXTERM] Booting the device.
[LXTERM] Done.
Executing booted program at 0x40000000

--============= Liftoff! ===============--
Hello, World!

https://tasmota.github.io/docs/devices/Sonoff-T1/

Configuration > Configure Module > Sonoff T1 3CH

immediately after flashing Tasmota (so it won't reset when powered from adapter):

SetOption13 1

mapping: https://github.com/arendst/Tasmota/blob/a466c5abf33386c3dda34696e11ae975c7ac6649/tasmota/tasmota_template.h#L2468

 {                     // SONOFF_T13 - Sonoff T1 3CH (ESP8285)
    GPI8_KEY1,          // GPIO00 Button 1
    GPI8_USER,          // GPIO01 Serial RXD and Optional sensor
    GPI8_USER,          // GPIO02 Optional Sensor (J3 Pin 5)
    GPI8_USER,          // GPIO03 Serial TXD and Optional sensor
    GPI8_REL3,          // GPIO04 Blue Led and Relay 3 (0 = Off, 1 = On)
    GPI8_REL2,          // GPIO05 Blue Led and Relay 2 (0 = Off, 1 = On)
                        // GPIO06 (SD_CLK   Flash)
                        // GPIO07 (SD_DATA0 Flash QIO/DIO/DOUT)
                        // GPIO08 (SD_DATA1 Flash QIO/DIO/DOUT)
    GPI8_KEY2,          // GPIO09 Button 2
    GPI8_KEY3,          // GPIO10 Button 3
                        // GPIO11 (SD_CMD   Flash)
    GPI8_REL1,          // GPIO12 Blue Led and Relay 1 (0 = Off, 1 = On)
    GPI8_LED1_INV,      // GPIO13 Blue Led (0 = On, 1 = Off) - Link and Power status
    0, 0, 0, 0
  },

https://templates.blakadder.com/gosund_SP112_v3_4.html

GPIO # Component
GPIO00 Led1i
GPIO01 None
GPIO02 Led2i
GPIO03 None
GPIO04 HLWBL CF1
GPIO05 BL0937 CF
GPIO09 None
GPIO10 None
GPIO12 HLWBL SELi
GPIO13 Relay2i
GPIO14 Relay1
GPIO15 None
GPIO16 None
FLAG Button

{"NAME":"Gosund 112v3.4","GPIO":[56,0,57,0,132,134,0,0,131,30,21,0,0],"FLAG":4,"BASE":18}

after entering into interface following config is enabled:

{"NAME":"Gosund 112v3.4","GPIO":[320,0,321,0,2656,2720,0,0,2624,257,224,0,0,4800],"FLAG":0,"BASE":18}

https://docs.ai-thinker.com/en/esp32c3

ESP32-C3_Kit
3528

ESP-C3-32S

chip_id

dpavlin@nuc:/nuc/esp32/esp-idf/examples$ /nuc/esp32/esptool/esptool.py --port /dev/ttyUSB4 chip_id
esptool.py v3.2-dev
Serial port /dev/ttyUSB4
Connecting....
Detecting chip type... ESP32-C3
Chip is ESP32-C3 (revision 3)
Features: Wi-Fi
Crystal is 40MHz
MAC: 7c:df:a1:b6:b4:94
Uploading stub...
Running stub...
Stub running...
Warning: ESP32-C3 has no Chip ID. Reading MAC instead.
MAC: 7c:df:a1:b6:b4:94
Hard resetting via RTS pin...

flash_id

dpavlin@nuc:/nuc/esp32/esp-idf/examples$ /nuc/esp32/esptool/esptool.py --port /dev/ttyUSB4 flash_id
esptool.py v3.2-dev
Serial port /dev/ttyUSB4
Connecting....
Detecting chip type... ESP32-C3
Chip is ESP32-C3 (revision 3)
Features: Wi-Fi
Crystal is 40MHz
MAC: 7c:df:a1:b6:b4:94
Uploading stub...
Running stub...
Stub running...
Manufacturer: 5e
Device: 6015
Detected flash size: 2MB
Hard resetting via RTS pin...

module info

https://docs.ai-thinker.com/_media/esp32/docs/esp-c3-32s-kit-v1.0_specification.pdf

Wiring of onboard lights

IO5 is connected to RGB blue lamp beads; IO3 is connected to
RGB red lamp beads; IO4 is connected to RGB green lamp
beads; IO19 is connected to cool color lamp beads; IO18 is
connected to warm color lamp beads;（high level is valid）

This is 5V device without modification! It works for me(tm) but you have been warned

http://www.eevblog.com/forum/repair/ch341a-serial-memory-programmer-power-supply-fix/

Just lift pin 28 and put some tape under it to prevent any short circuit. Then solder one wire from this pin to pin 2 of AMS1117 and also to C4. The side of the C4 to connect is the one connected to CH341A pin 9.

jumper on pins

1-2 SPI flash programmer mode
2-3 TTL serial mode

supported out-of-box by flashrom, probably better option, but anyway:

https://github.com/setarcos/ch341prog

dpavlin@nuc:/nuc/ch341a$ git clone https://github.com/setarcos/ch341prog
Cloning into 'ch341prog'...
remote: Counting objects: 104, done.
remote: Total 104 (delta 0), reused 0 (delta 0), pack-reused 104
Receiving objects: 100% (104/104), 34.79 KiB | 0 bytes/s, done.
Resolving deltas: 100% (61/61), done.
Checking connectivity... done.
dpavlin@nuc:/nuc/ch341a$ cd ch341prog/
dpavlin@nuc:/nuc/ch341a/ch341prog$ make
gcc -std=gnu99 -Wall ch341a.c main.c -o ch341prog  -lusb-1.0
dpavlin@nuc:/nuc/ch341a/ch341prog$ ./ch341prog 

Usage:
 -h, --help             display this message
 -i, --info             read the chip ID info
 -e, --erase            erase the entire chip
 -l, --length <bytes>   manually set length
 -w, --write <filename> write chip with data from filename
 -r, --read <filename>  read chip and save data to filename
 -t, --turbo            increase the i2c bus speed (-tt to use much faster speed)
 -d, --double           double the spi bus speed

I2C in userspace

https://sourceforge.net/projects/ch341eepromtool/

dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$ gcc -o ch341eeprom ch341eeprom.c ch341funcs.c -lusb-1.0
dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$ 
dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$ ./ch341eeprom 
ch341eeprom - an i2c EEPROM programming tool for the WCH CH341a IC
Version 0.5 copyright (c) 2011  asbokid <ballymunboy@gmail.com>

This program comes with asbolutely no warranty; This is free software,
and you are welcome to redistribute it under certain conditions:
GNU GPL v3 License: http://www.gnu.org/licenses/gpl.html

Usage:
 -h, --help             display this text
 -v, --verbose          verbose output
 -d, --debug            debug output
 -s, --size             size of EEPROM {24c32|24c64}
 -e, --erase            erase EEPROM (fill with 0xff)
 -w, --write <filename> write EEPROM with image from filename
 -r, --read  <filename> read EEPROM and save image to filename

Example:  ch341eeprom -v -s 24c64 -w bootrom.bin

flashrom SPI

Not needed anymore, included in mainline flashrom

git clone https://github.com/urjaman/flashrom/
git checkout -b origin/ch341a origin/ch341a

dpavlin@nuc:/nuc/flashrom$ sudo apt-get install pciutils-dev

linux kernel spi module

dpavlin@nuc:/nuc$ git clone https://github.com/gschorcht/spi-ch341-usb.git
Cloning into 'spi-ch341-usb'...
remote: Counting objects: 63, done.
remote: Total 63 (delta 0), reused 0 (delta 0), pack-reused 63
Unpacking objects: 100% (63/63), done.
dpavlin@nuc:/nuc$ cd spi-ch341-usb
dpavlin@nuc:/nuc/spi-ch341-usb$ make
make -C /usr/src/linux-headers-4.14.0-3-amd64/ M=/nuc/spi-ch341-usb  modules
make[1]: Entering directory '/usr/src/linux-headers-4.14.0-3-amd64'
  CC [M]  /nuc/spi-ch341-usb/spi-ch341-usb.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /nuc/spi-ch341-usb/spi-ch341-usb.mod.o
  LD [M]  /nuc/spi-ch341-usb/spi-ch341-usb.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.14.0-3-amd64'
dpavlin@nuc:/nuc/spi-ch341-usb$ 
dpavlin@nuc:/nuc/spi-ch341-usb$ sudo make install
[sudo] password for dpavlin: 

dpavlin@nuc:/nuc/spi-ch341-usb$ sudo modprobe spi-ch341-usb

[525021.048281] spi-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output cs0 SPI slave with cs=0
[525021.048285] spi-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output cs1 SPI slave with cs=1
[525021.048287] spi-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output cs2 SPI slave with cs=2
[525021.048290] spi-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio4 gpio=0 irq=0 (hwirq)
[525021.048292] spi-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio5 gpio=1 irq=1 
[525021.048296] spi-ch341-usb 2-2.1.4:1.0: ch341_spi_probe: SPI master connected to SPI bus 0
[525021.048426] spi-ch341-usb 2-2.1.4:1.0: ch341_spi_probe: SPI device /dev/spidev0.0 created
[525021.048516] spi-ch341-usb 2-2.1.4:1.0: ch341_spi_probe: SPI device /dev/spidev0.1 created
[525021.048596] spi-ch341-usb 2-2.1.4:1.0: ch341_spi_probe: SPI device /dev/spidev0.2 created
[525021.049147] spi-ch341-usb 2-2.1.4:1.0: ch341_usb_probe: connected
[525021.049194] usbcore: registered new interface driver spi-ch341-usb

linux kernel i2c module

• https://github.com/gschorcht/i2c-ch341-usb

root@nuc:/nuc# git clone https://github.com/gschorcht/i2c-ch341-usb.git
Cloning into 'i2c-ch341-usb'...
remote: Counting objects: 39, done.
remote: Total 39 (delta 0), reused 0 (delta 0), pack-reused 39
Unpacking objects: 100% (39/39), done.
root@nuc:/nuc# cd i2c-ch341-usb
root@nuc:/nuc/i2c-ch341-usb# make
make -C /usr/src/linux-headers-4.14.0-3-amd64/ M=/nuc/i2c-ch341-usb  modules
make[1]: Entering directory '/usr/src/linux-headers-4.14.0-3-amd64'
  CC [M]  /nuc/i2c-ch341-usb/i2c-ch341-usb.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /nuc/i2c-ch341-usb/i2c-ch341-usb.mod.o
  LD [M]  /nuc/i2c-ch341-usb/i2c-ch341-usb.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.14.0-3-amd64'
root@nuc:/nuc/i2c-ch341-usb# 
root@nuc:/nuc/i2c-ch341-usb# sudo make install

root@nuc:/nuc/i2c-ch341-usb# modprobe i2c-ch341-usb

[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output gpio0 gpio=0 irq=0 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output gpio1 gpio=1 irq=1 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output gpio2 gpio=2 irq=2 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: output gpio3 gpio=3 irq=3 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio4 gpio=4 irq=4 (hwirq)
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio5 gpio=5 irq=5 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio6 gpio=6 irq=6 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_cfg_probe: input  gpio7 gpio=7 irq=7 
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_i2c_probe: created i2c device /dev/i2c-8
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_i2c_set_speed: Change i2c bus speed to 100 kbps
[Wed Feb  7 16:37:00 2018] i2c-ch341-usb 2-2.1.4:1.0: ch341_usb_probe: connected
[Wed Feb  7 16:37:00 2018] usbcore: registered new interface driver i2c-ch341-usb

schematics and info

• http://onetransistor.blogspot.hr/2017/08/ch341a-mini-programmer-schematic.html
• http://www.zoobab.com/ch341-usb-spi-i2c-uart-isp-dongle

I added soic 8 pinout over zif socket, because position of pin 1 is not obvious (or clearly marked anywhere on top). I suggest that you fix that with silver sharpy.

alternative schematics

https://github.com/Upcycle-Electronics/CH341A-Pro

OpenDPS

• https://johan.kanflo.com/hacking-the-dps5005/
• https://johan.kanflo.com/opendps-design/
• https://johan.kanflo.com/upgrading-your-dps5005/

pinout

upgrade to opensource firmware

https://github.com/kanflo/opendps.git

dpavlin@nuc:/nuc$ git clone --recursive https://github.com/kanflo/opendps.git
dpavlin@nuc:/nuc$ cd opendps/
dpavlin@nuc:/nuc/opendps$ make -C libopencm3
dpavlin@nuc:/nuc/opendps$ make -C opendps

st-link

connecting rst pin to unpowered st-link stops dps5005 from booting

https://johan.kanflo.com/upgrading-your-dps5005/

openocd

pi@pihdmi:~ $ sudo openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg
Open On-Chip Debugger 0.10.0+dev-01489-g06c7a53f1-dirty (2020-11-14-15:21)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
WARNING: interface/stlink-v2.cfg is deprecated, please switch to interface/stlink.cfg
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1000 kHz
Info : STLINK V2J28S7 (API v2) VID:PID 0483:3748
Info : Target voltage: 3.273018
Info : stm32f1x.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : starting gdb server for stm32f1x.cpu on 3333
Info : Listening on port 3333 for gdb connections

backup few states

from another terminal

pi@pihdmi:/nuc/opendps $ ./ocd-client.py all | tee 5V-off.txt

# exit openocd, turn output on

pi@pihdmi:/nuc/opendps $ ./ocd-client.py all | tee 5V-on.txt

erase

pi@pihdmi:/nuc/opendps $ telnet localhost 4444
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> reset halt
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x080010a4 msp: 0x20001ff0
> flash erase_address unlock 0x08000000 0x10000
device id = 0x10016420
flash size = 64kbytes
erased address 0x08000000 (length 65536) in 0.145284s (440.517 KiB/s)

flash

pi@pihdmi:/nuc/opendps/opendps $ make flash
  FLASH   opendps_DPS5005.srec
(echo "halt; program /nuc/opendps/opendps/opendps_DPS5005.srec verify reset" | nc -4 localhost 4444 2>/dev/null) || \
        openocd -f interface/stlink-v2.cfg \
        -f target/stm32f1x.cfg \
        -c "program opendps_DPS5005.srec verify reset exit" \
        2>/dev/null
��������Open On-Chip Debugger
> halt; program /nuc/opendps/opendps/opendps_DPS5005.srec verify reset
target halted due to debug-request, current mode: Thread
xPSR: 0x61000000 pc: 0x08000bb8 msp: 0x20001fb8
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x080010a4 msp: 0x20001ff0
** Programming Started **
device id = 0x10016420
flash size = 64kbytes
** Programming Finished **
** Verify Started **
** Verified OK **
** Resetting Target **


pi@pihdmi:/nuc/opendps/dpsboot $ make flash
  FLASH   dpsboot.srec
(echo "halt; program /nuc/opendps/dpsboot/dpsboot.srec verify reset" | nc -4 localhost 4444 2>/dev/null) || \
        openocd -f interface/stlink-v2.cfg \
        -f target/stm32f1x.cfg \
        -c "program dpsboot.srec verify reset exit" \
        2>/dev/null
��������Open On-Chip Debugger
> halt; program /nuc/opendps/dpsboot/dpsboot.srec verify reset
target halted due to debug-request, current mode: Thread
xPSR: 0x61000000 pc: 0x08000bb8 msp: 0x20001fb8
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x080010a4 msp: 0x20001ff0
** Programming Started **
** Programming Finished **
** Verify Started **
** Verified OK **
** Resetting Target **

client software

pi@pihdmi:/nuc/opendps $ pip3 install -r requirements.txt
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting crc16==0.1.1 (from -r requirements.txt (line 1))
  Downloading https://www.piwheels.org/simple/crc16/crc16-0.1.1-cp37-cp37m-linux_armv7l.whl
Requirement already satisfied: pyserial==3.4 in /usr/lib/python3/dist-packages (from -r requirements.txt (line 2)) (3.4)
Installing collected packages: crc16
Successfully installed crc16-0.1.1
pi@pihdmi:/nuc/opendps $ cd dpsctl/

pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 --ping
Error: timeout talking to device /dev/ttyUSB2.

# swap rx/tx pins

pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 --ping
Got pong from device

pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 --query
Func       : cv (on)
  voltage  : 5000
  current  : 1000
V_in       : 10.77 V
V_out      : 5.03 V
I_out      : 0.001 A
pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 -o off

pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 --query
Func       : cv (off)
  voltage  : 5000
  current  : 1000
V_in       : 10.78 V
V_out      : 1.73 V
I_out      : 0.001 A

pi@pihdmi:/nuc/opendps/dpsctl $ python3 ./dpsctl.py --device /dev/ttyUSB2 --query
Func       : cv (off)
  voltage  : 5000
  current  : 1000
V_in       : 10.78 V
V_out      : 0.01 V
I_out      : 0.000 A

serial upgrade

pi@pihdmi:/nuc/opendps/dpsctl $ python3 dpsctl.py --device /dev/ttyUSB2 -U ../opendps/opendps_DPS5005.bin
Download progress: 2% Error: timeout talking to device /dev/ttyUSB2.

SEL on power-on to stay in bootloader

# it bricked my board first time I tried it

esp8266

I had trouble finding toolchain which works with it, I ended up using https://github.com/pfalcon/esp-open-sdk

dpavlin@nuc:/nuc/esp8266/esp-open-sdk$ git remote -v
origin  https://github.com/pfalcon/esp-open-sdk.git (fetch)
origin  https://github.com/pfalcon/esp-open-sdk.git (push)

I also needed to replace esptool, since this machine requires python3 version of it

ln -s /nuc/esp32/esptool/esptool.py /nuc/esp8266/esp-open-sdk/xtensa-lx106-elf/bin/esptool.py

wifi config

dpavlin@nuc:/nuc/opendps$ ls -al esp8266-proxy/esp-open-rtos/include/private_ssid_config.h
-rw-r--r-- 1 dpavlin dpavlin 60 Aug  4 10:21 esp8266-proxy/esp-open-rtos/include/private_ssid_config.h
dpavlin@nuc:/nuc/opendps$ vi esp8266-proxy/esp-open-rtos/include/private_ssid_config.h

build

dpavlin@nuc:/nuc/opendps$ cd esp8266-proxy/
dpavlin@nuc:/nuc/opendps/esp8266-proxy$ cat env.sh
export EOR_ROOT=`pwd`/esp-open-rtos
export PATH=/nuc/esp8266/esp-open-sdk/xtensa-lx106-elf/bin:$PATH
dpavlin@nuc:/nuc/opendps/esp8266-proxy$ . env.sh

dpavlin@nuc:/nuc/opendps/esp8266-proxy$ make

Merged 1 ELF section

flash

dpavlin@nuc:/nuc/opendps/esp8266-proxy$ make flash
esptool.py -p /dev/ttyUSB0 --baud 115200 write_flash -fs 16m -fm qio -ff 40m \
        0x0 esp-open-rtos/bootloader/firmware_prebuilt/rboot.bin 0x1000 esp-open-rtos/bootloader/firmware_prebuilt/blank_config.bin 0x2000 ./firmware/dpsproxy.bin
WARNING: Flash size arguments in megabits like '16m' are deprecated.
Please use the equivalent size '2MB'.
Megabit arguments may be removed in a future release.
esptool.py v3.2-dev
Serial port /dev/ttyUSB0


pi@pihdmi:/nuc/opendps/esp8266-proxy $ /nuc/esp32/esptool/esptool.py --port /dev/ttyUSB3 write_flash 0x0 esp-open-rtos/bootloader/firmware_prebuilt/rboot.bin 0x1000 esp-open-rtos/bootloader/firmware_prebuilt/blank_config.bin 0x2000 ./firmware/dpsproxy.bin
esptool.py v3.2-dev
Serial port /dev/ttyUSB3
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 5c:cf:7f:c2:6b:19
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Flash will be erased from 0x00000000 to 0x00000fff...
Flash will be erased from 0x00001000 to 0x00001fff...
Flash will be erased from 0x00002000 to 0x00043fff...
Compressed 3104 bytes to 2169...
Wrote 3104 bytes (2169 compressed) at 0x00000000 in 0.3 seconds (effective 79.1 kbit/s)...
Hash of data verified.
Compressed 2048 bytes to 23...
Wrote 2048 bytes (23 compressed) at 0x00001000 in 0.1 seconds (effective 132.3 kbit/s)...
Hash of data verified.
Compressed 268660 bytes to 195361...
Wrote 268660 bytes (195361 compressed) at 0x00002000 in 18.0 seconds (effective 119.6 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

test

reset board and verify that it's connecting to wifi

pi@rpi4:/nuc/opendps/dpsctl $ microcom -p /dev/ttyUSB0 -s 9600
connected to /dev/ttyUSB0
Escape character: Ctrl-\
Type the escape character to get to the prompt.
2dnټ�bdbz�$�`dl��x$2�+`b:`:r�pd�zt{�[�8)1J������: sta(4c:11:ae:0d:1f:ab)
add if0
scandone
add 0
aid 16
cnt

connected with dreamhouse, channel 10
dhcp client start...
ip:192.168.3.111,mask:255.255.255.0,gw:192.168.3.1

now test client

pi@rpi4:~ $ /nuc/opendps/dpsctl/dpsctl.py -S
192.168.3.111
^C

pi@rpi4:~ $ export DPSIF=192.168.3.111

pi@rpi4:~ $ /nuc/opendps/dpsctl/dpsctl.py -q
Func       : cv (off)
  voltage  : 5000
  current  : 1000
V_in       : 9.71 V
V_out      : 0.00 V
I_out      : 0.000 A

powering esp8266

3.3v voltage is available at jtag pins, but it can't supply enough current to run esp8266

There is 5v pin from buck converter on top-left pin of 2x4 pins on left side of board (when looking from back side of module)

5v gnd
 o o
 o o
 o o
 o o

power drain from input voltage is roughly doubled when powering esp8266 from 5v rail