In following function of initializing of SPI, I am not getting two things Please help me.
1. How to choose the value of SPCCR=0x8. ? 2. As well as why put 0x1 in to the VPBDIV. ?
void Initialize() {
PINSEL0=0x5500;
/* Set pclk to same as cclk */ VPBDIV=0x1;
/* Set to highest speed for SPI at 10 MHz- > 1.25 MHz */ SPCCR=0x8;
SPCR=0x20; }
The you can use ARM wizard to make the SPI settings http://alexan.edaboard.eu/
You have to set the core clock (CCLK) and PCLK divider manually to the settings you use in your mcu (for example 60MHz and 1/4 which means that the SPI peripheral clock is 15MHz), then you can set the SPI/SSP frequency by using up/down arrow on the divider value edits or by right clicking and selecting the target frequency.
In either case it would be a good idea to check the manual so that you know of the calculations involved, then use the application to do it automatically.
Alex