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epaper_display [2011/02/24 15:03] steve_m [Driving the Motorola F3 e-paper display] sustain->retain |
epaper_display [2011/02/24 17:19] steve_m [Microcontroller] |
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\\ By the way, since I mentioned the TI Locosto baseband: Maybe someone wants to reverse-engineer the [[http://bb.osmocom.org/trac/wiki/CalypsoRomloader#secure-RomloaderonCalypsoplus|serial rom-bootloader]] of this ARM7-based processor, so we can drive the display directly from the phone :-P | \\ By the way, since I mentioned the TI Locosto baseband: Maybe someone wants to reverse-engineer the [[http://bb.osmocom.org/trac/wiki/CalypsoRomloader#secure-RomloaderonCalypsoplus|serial rom-bootloader]] of this ARM7-based processor, so we can drive the display directly from the phone :-P | ||
===== Interfacing with the display ===== | ===== Interfacing with the display ===== | ||
- | Normally, the baseband board and the display/keypad pcb are connected with a 32-pin connector (exact model unknown). Luckily there are pull-up resistors and capacitors for every needed signal, so I decided to solder some wires there, instead of directly to the connector. The schematics of this phone are floating around the web (just search for **f3_schem.rar**). | + | Normally, the baseband board and the display/keypad pcb are connected with a 32-pin connector (exact model unknown). Luckily there are pull-up resistors and capacitors for every needed signal, so I decided to solder some wires there, instead of directly to the connector. The schematics of this phone are floating around the web, just search for **f3_schem.rar**. |
|{{:f3_wires_soldered.jpg?350|thin wires soldered to the display pcb}}|{{:f3_display_connector.jpg?436|the connector of the display}}| | |{{:f3_wires_soldered.jpg?350|thin wires soldered to the display pcb}}|{{:f3_display_connector.jpg?436|the connector of the display}}| | ||
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|P1.5|SPI clock|16|SPI_CLK| | |P1.5|SPI clock|16|SPI_CLK| | ||
|P1.6|SPI MOSI|17|SPI_MOSI| | |P1.6|SPI MOSI|17|SPI_MOSI| | ||
+ | |||
+ | Note: even though the MISO signal is connected in the original phone, there's no activity at all, so I left it unconnected. Also, DISPLAY_BUSY0 and 1 seem to be identical. | ||
{{:msp430_epaper.jpg?300|Launchpad with connected display}} | {{:msp430_epaper.jpg?300|Launchpad with connected display}} |