<![CDATA[SPI time between transfers]]>Hello,

Ive somehow managed to send commands/data to my display through the SPI port (32776.1). Ive set the clock speed to 8 MHz and this is exactly what I get on my oscilloscope. Also the display receives the information and acts accordingly.

Problem: the pixel drawing on the display is extremely slow. To draw all the pixels on it, it takes ~1 minute. The time between 2 consecutive transfers seems to be fixed and ~240us. Clearly this is the problem. Does anyone have any idea about how to minimize this delay?

Note: my code is written in C and the delay corresponds to consecutive instructions (one line and the following). Im using an Omega2 with the latest firmware version (0.1.10 b160).

Thanks beforehand for the help.
Alfonso

]]>http://community.onion.io/topic/2205/spi-time-between-transfersRSS for NodeFri, 13 Mar 2026 22:29:26 GMTWed, 12 Jul 2017 11:13:07 GMT60<![CDATA[Reply to SPI time between transfers on Wed, 12 Jul 2017 11:54:12 GMT]]>Hello,

Ive somehow managed to send commands/data to my display through the SPI port (32776.1). Ive set the clock speed to 8 MHz and this is exactly what I get on my oscilloscope. Also the display receives the information and acts accordingly.

Problem: the pixel drawing on the display is extremely slow. To draw all the pixels on it, it takes ~1 minute. The time between 2 consecutive transfers seems to be fixed and ~240us. Clearly this is the problem. Does anyone have any idea about how to minimize this delay?

Note: my code is written in C and the delay corresponds to consecutive instructions (one line and the following). Im using an Omega2 with the latest firmware version (0.1.10 b160).

Thanks beforehand for the help.
Alfonso

]]>http://community.onion.io/post/13726http://community.onion.io/post/13726Wed, 12 Jul 2017 11:54:12 GMT