1. Hardware
2. Pinout
3. Firmware
4. UART
5. CAN

• Schematic_Ollie_v159r1.pdf
• Schematic_Ollie_DB9_v141r1.pdf

• UARTA and UARTB voltage level can be set using slide switch (1V8, 3V3 and 5V).
• RS232 RX and RS232 TX pins ±12V. RS232 RX Absolute Max ±25V.

Firmware is based on cantact-fw and candleLight_fw combined into a single binary file. The firmware can be selected using the dip switch (FW SEL), setting the switch ON the device will boot with candlelight_fw, if switched OFF it will boot with cantact-fw.

|

1. Download:
   • Default firmware
   • or PCAN emulator firmware
2. Install stm32cubeprog
3. Set the jumper to enter bootloader mode.
4. Connect USB and flash firmware

Based on XR21V1414 4-ch USB to UART chip. Drivers are available Here

Once you connect ollie to a Windows machine, you should be able to see 4 COM port channels in the device manager.

On Linux you should see four devices created, typically /dev/ttyXRUSB[0-3]. If you see /dev/ttyACM[0-3], there is a chance the UART might not behave correctly in this case you need to install drivers by following these steps:

1. # git clone https://github.com/brendanhoran/xr_usb_serial_common
2. # make (on raspberry pi make sure you have the kernel headers installed)
3. # cp -a ../xr_usb_serial_common-1a /usr/src/
4. # dkms add -m xr_usb_serial_common -v 1a
5. # dkms build -m xr_usb_serial_common -v 1a
6. # dkms install -m xr_usb_serial_common -v 1a
7. # echo blacklist cdc-acm > /etc/modprobe.d/blacklist-cdc-acm.conf
8. # update-initramfs -u
9. Now plug in ollie.

Ollie runs dual CAN firmware, it can be used with candleLight or slcan firmware.

Setting the dip to postion 1 (as shown in the picture) will enable candleLight. Postion 2 enables slcan. Switch must be set before the Micro USB is plugged in.

Ollie can also run (Peak CAN) PCAN firmware, follow the instruction to update the firmware.

candleLight firmware is compatible with MicroBus app (by codenocold), which is available for Windows and Ubuntu.

On windows you can also use with Cangaroo app. Download link available Here. For linux you can compile it yourself, source available Here

Python drivers are available Here

candleLight is natively supported under linux using gs_usb driver. Just plug it in and using this command:

ip link set can0 up type can bitrate 500000

On windows you can use CANtact app. Download link available Here

python-can library documentation is available Here

When flashed with PCAN-USB firmware ollie can be used with PCAN-View or other softwares such as BUSMASTER.

© 2021 meatPi Electronics | www.meatpi.com | PO Box 5005 Clayton, VIC 3168, Australia