projects / sigrok-dumps.git / blame
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|---|---|---|
| 3ae62781 VPP |
1 | ------------------------------------------------------------------------------- |
| 2 | Amulet Technologies LCD UART protocol | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a dump of Amulet LCD UART protocol for Barco Encore Small Controller | |
| 6 | video mixer controller. | |
| 7 | ||
| 8 | Amulet LCDs have their own processor, flash and RAM. They work by displaying | |
| 9 | pages created with GemStudio and have an "ASCII" protocol for selecting the | |
| 10 | page and updating strings and other variables for widgets. | |
| 11 | ||
| 12 | Details: | |
| 13 | https://www.amulettechnologies.com/index.php/products/display-modules | |
| 14 | https://www.amulettechnologies.com/index.php/support/documentation/send/9-users-guide/34-users-guide | |
| 15 | (protocol definition starts on page 159) | |
| 16 | ||
| 17 | ||
| 18 | Logic analyzer setup | |
| 19 | -------------------- | |
| 20 | ||
| 21 | The logic analyzer used was a DreamSourceLabs DSLogic (at 10MHz): | |
| 22 | ||
| 23 | It was connected on the 5V logic level UART line between the Amulet | |
| 24 | display and the main CPU board. | |
| 25 | ||
| 26 | Probe UART | |
| 27 | ---------------- | |
| 28 | 0 RX (on the Amulet display) | |
| 29 | 1 TX (on the Amulet display) | |
| 30 | ||
| 31 | ||
| 32 | Data | |
| 33 | ---- | |
| 34 | ||
| 35 | The communication is UART (115200/8n1). | |
| 36 | ||
| 37 | bootup.sr contains the display initialization at controller bootup, since all | |
| 38 | of the pages are on the display flash no proprietary firmware is present. | |
| 39 | ||
| 40 | menu_changes.sr is a capture of cycling between different menu pages using | |
| 41 | buttons on the controller keyboard. |