Content → Hardware → mergCBUS

• CAN-GC Overview
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  • Firmware
  • FLiM Setup

This page documents the HEAD revision of the firmware.

The firmware is based on CAN-GC2.
The clock has no RTC for keeping up time if no minute syncs are received.

• Model time display as received by the OPC_FCLK.
• Displays " - - - - " until the first sync is received.
• Displays " H E L P " if no sync was received within a model time minute based on the last received divider.
• Brightness correction by dialog.
• The hours/minutes separator shows the model second pulse.
• Freeze/Resume support; The separator will stop flashing on freeze.
• Shows Time/Date/Temperature alternately.
• Day of week represented by seven LEDs on the left.

• Boot mode.

© MERG
© Rob Versluis, rocrail.net

• https://launchpad.net/rocrail-hardware/+download

• https://gitlab.com/rocrail/GCA/tree/master/cbus

#define OPC_FCLK    0xCF    // Fast clock event

  cmd[0] = OPC_FCLK;
  cmd[1] = mins;
  cmd[2] = hours;
  cmd[3] = wday; // bit 0-3: 1 = Sunday, 2 = Monday
  cmd[3] = mon; // bit 4-7: 1 = January, 2 = February, ...
  cmd[4] = div; // 0 = Freeze, 1 = Real time
  cmd[5] = mday; // 1..31
  cmd[6] = temperature; // -127...127 degrees

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