My task is to port a NXP SPI driver delivered with Keil RL-ARM to my Kinetis K60 system. Finlay I want to talk to SD cards in SPI mode. I do this step by step. My next task is the Send routine.
RL-ARM User's Guide: spi.RecBuf Library Routine
This is the original NXP Send:
/* Receive SPI data to buffer. */
static BOOL RecBuf (U8 *buf, U32 sz) {
U32 i;
for (i = 0; i < sz; i++) {
SSPDR = 0xFF;
while (!(SSPSR & RNE)); /* Wait while Rx FIFO is empty. */
buf[i] = SSPDR;
}
return (__TRUE);
}
This my first trial for the Kinetis RecBuf
/*--------------------------- RecBuf ----------------------------------------*/
/* Receive SPI data to buffer. */
static BOOL RecBuf (U8 *buf, U32 sz) {
U32 i;
for (i = 0; i < sz; i++) buf[i] = SPI2->POPR;
return (__TRUE);
}
Do you think this is applicable for SD card access via SPI?
I will discuss the other routines in other threads because of a better overview. I will post the final driver, because Keil provides only samples for SDHC mode for memory cards for the Kinetis system.
Thank you
