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* Better integration of SPI with DMA and IRQ. Using only 'End' IRQ. Perf could ↵JF2020-01-261-9/+2
| | | | be improved by using 'Started' IRQ to prepare the next buffer while the current one is beeing sent.
* [WIP] Max SPI speed reached (119ms for a full refresh. Theo max : 240*240*16 ↵JF2020-01-221-2/+2
| | | | | | = 115.2ms) using IRQ and DMA. Code needs some cleaning before integration.
* Implement the SPI driver using DMA.JF2020-01-191-1/+0
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* Disable SPI, I²C, touch controller and display controller in sleep mode.JF2020-01-171-0/+5
| | | | | | | | Re-enable them on wake up. Remove delays that were not needed in st7889 driver. Hopefully, it'll improve the battery life!
* Apply reset signal on pin P0.26 for LCD during init.JF2020-01-021-2/+5
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* The font is now fixed width.JF2019-12-071-0/+4
| | | | HUGE performance improvement of the display driver.
* Convert Spi and GFX to C++.JF2019-12-071-0/+59