Updated Home (markdown)
Eric Helgeson
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Home.md
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Home.md
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## Compatibility
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If your computer is not listed below - it may be compatible but there is no guarantee it will work. This device is designed and tested to work with pre-PowerPC Macs.
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### Compatible
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#### Tested by Me
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SE, SE/30, Classic, Classic II, Color Classic, LC I/II/III
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#### Reported by others
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[IIcx](https://68kmla.org/forums/topic/61045-arduino-scsi-device-work-in-progress/?do=findComment&comment=663077)
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### Incompatible
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Plus
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## Usage
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Hard Disk image files are placed in the root directory of a `FAT32` formatted SD card.
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The naming convention is as follows:
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`HDxy_512.hda`
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```
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HD - Hard Disk
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x - SCSI ID to attach to. 0-7 (though 7 on a Macintosh is the System)
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y - LUN id usually 0.
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512 - Sector size. Usually 512.
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```
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Example:
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`HD10_512.hda` - Hard Disk at SCSI ID 1, LUN 0, sector size of 512.
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Note you may mount multiple drives at a time.
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If no image files are found PC13 will pulse on and off.
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### Termination
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To enable termination place the two jumpers on the TERM block. Termination should be enabled if it is the last device in the chain - which is normally how it is used.
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## Troubleshooting
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### Log Files
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If your device is not working - check the `LOG.txt` in the root of the SD card.
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### Verify you are not using a fake
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How to tell if your STM32 is fake: https://github.com/keirf/Greaseweazle/wiki/STM32-Fakes
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### Performance is slower than expected
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Try a different SD card. Cheap/old SD cards can affect performance.
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## Setup Arduino IDE
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You only need to setup the Arduino IDE if you are planning on developing and contributing to the project. Otherwise flash a provided `.bin` file.
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1. Install `Arduino IDE` version `1.8.x` - https://www.arduino.cc/en/software
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1. Instructions may require extra steps to allow for serial/usb access depending on your OS. Read all instructions carefully.
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1. Follow these instructions _**carefully**_ as well - https://github.com/rogerclarkmelbourne/Arduino_STM32/wiki/Installation
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1. **Use the 1.0.0 core** - not the master - https://github.com/rogerclarkmelbourne/Arduino_STM32/releases/tag/v1.0.0
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1. Note I used the `Arduino SAM Boards (32-bits ARM) Cortext-M3)` version `1.6.12`
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1. Additional Help https://sites.google.com/site/ericmklaus/projects-1/stm32f103-minimum-system-development-board/arduino-ide-for-stm32103-board
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1. Some additional hints here - https://github.com/ztto/ArdSCSino-stm32/issues/5
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1. If you get a warning about an unsigned binary - open the System Preferences -> Security -> allow stm32...
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1. Install SdFat - Tools -> Manage Libraries -> `SdFat by Bill Greiman` version `2.0.2`
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1. Make sure the correct board is selected `Generic STM32F103C series` - Copy the latest `.ino` file into a sketch and compile.
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1. Flash using your preferred method.
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## Flashing
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When flashing you have two options:
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Flash by setting up the Arduino IDE and re-compiling and programming. If you are a developer and plan to contribute this method is what you should use.
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You may also flash the `.bin` file directly from STM32CubeProgrammer. If you are not a developer and just wish to get the code to the Arduino, use this (as development environment setup can be a bit tricky!)
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### Using STLink v2
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0. Remove SD Card
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0. Make sure the STLink is up to date - [Latest Firmware](https://my.st.com/content/my_st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/stsw-link007.license=1610785194992.product=STSW-LINK007.version=2.37.26.html)
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1. Connect pins `SWDIO`(2), `GND`(4), `SWCLK`(6), and `3.3v`(8) from the programmer to the Blue Pill. NOTE: These are not the same as Serial ports.
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1. Using Arduino Studio Select Tools -> Upload Method -> STLink.
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1. You should see the LED PC_13 flashing indicating no SD Card detected.
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1. Insert SD Card, boot on your favorite Mac!
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#### Trouble Shooting
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If the device is not detected you may need to hold reset, click program, once it is detected release reset.
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If you are unable to get the device in DFU mode for programming you may need to use [STM32CubeProgrammer](https://www.st.com/en/development-tools/stm32cubeprog.html) to erase the chip.
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### Using UART Serial
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I used these - but any USB->TTL device should work https://www.amazon.com/gp/product/B07D6LLX19/
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0. Remove SD Card if you have one installed.
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1. Set the BOOT0 jumper to 1
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1. Connect to your UART flashing device via the debug pins, then connect to your computer.
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1. Click the reset button on the BluePill to reset and enter programming mode.
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1. In Arduino Studio click Upload
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- Note you may have to click Upload more than once, or try restarting more than once.
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1. You should see the LED flashing if you have no SD Card.
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1. Unplug UART device.
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1. Set the BOOT0 jumper to 0
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1. Insert SD Card, boot on your favorite Mac!
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### Using USB HID
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Note: I have not been able to get this method to work.
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## Making Gerber files
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https://support.jlcpcb.com/article/44-how-to-export-kicad-pcb-to-gerber-files
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## Parts
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### Version 1.0-b
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STM32F103C8T6 (U1) aka BluePill board. Beware of fake/scams. Look for reviews. Amazon, ebay, etc.
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Mouser Cart https://www.mouser.com/ProjectManager/ProjectDetail.aspx?State=EDIT&ProjectGUID=db967d46-a51a-4a0e-a350-8f503b2f02cf
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* 2x 330 (RN2, RN4) Resistor nets https://www.mouser.com/ProductDetail/652-4610X-1LF-330
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* 2x 220 (RN1, RN3) Resistor nets https://www.mouser.com/ProductDetail/652-4610X-1LF-220
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* 2x Diodes https://www.mouser.com/ProductDetail/583-1N5818-T
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* SD Card Holder (J1) https://www.mouser.com/ProductDetail/538-104031-0811
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* Headers https://www.mouser.com/ProductDetail/872-920-0011-01
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Not available on Mouser:
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50 PIN SCSI header https://lcsc.com/product-detail/IDC-Connectors_BOOMELE-Boom-Precision-Elec-C30006_C30006.html
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- May substitute with 2 rows of headers from above.
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- **Note on Right angle connectors** - it appears Right angle headers are notched differently then the pin out. Be sure to note PIN 1/red stripe on the cable match up.
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### Optional
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Floppy/Berg Power header https://www.mouser.com/ProductDetail/571-1718254
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- Required if your machine does not supply power via TERM POWER. For example a Mac Plus or Mac with a Analog/PSU board that has not been recapped.
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See README.md
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