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olikraus / ucglib

Arduino True Color Library for TFTs and OLEDs
https://github.com/olikraus/ucglib/wiki
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improve sw spi speed #14

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 

In the procedure
static int16_t ucg_com_arduino_generic_SW_SPI(ucg_t *ucg, int16_t msg, uint16_t 
arg, uint8_t *data)

the call to

  ucg_com_arduino_init_shift_out(ucg->pin_list[UCG_PIN_SDA], 

could be done during powerup and CD

Original issue reported on code.google.com by olikr...@gmail.com on 26 Feb 2014 at 7:28

GoogleCodeExporter commented 9 years ago 
9 wire sw spi also need imrovement

Original comment by olikr...@gmail.com on 28 Feb 2014 at 4:44

GoogleCodeExporter commented 9 years ago 
Improvement:
  ST7735, Arduino Uno, SW SPI       Text:  2.0      Box: 3.3        Gradient:  2.2
  ST7735, Arduino Uno, SW SPI       Text:  2.2      Box: 3.4        Gradient:  2.4

Original comment by olikr...@gmail.com on 27 Apr 2014 at 3:54

GoogleCodeExporter commented 9 years ago 
move improvement of SW SPI for 9 bit SPI to some future release.

Original comment by olikr...@gmail.com on 27 Apr 2014 at 3:56