User`s manual

RX62N Group, RX621 Group 4. Library Reference
Category
SPI
Reference
R_SPI_Create, R_DMAC_GetStatus, R_DTC_GetStatus, R_SPI_GetStatus
Remarks
•
The amount of data for must match the total number of transfer frames (refer to parameter data3
in R_SPI_Create).
•
If a callback function is specified and DMAC / DTC control is not used, interrupts are used to
handle the data transfer.
Please see the notes on callback function usage in §6.
•
When using transmit only in slave mode, return of the function by using polling or trigger of
interrupt by using interrupt or DTC / DMAC does not ensure the end of transmission.
•
After using this function, use R_SPI_GetStatus to check for and clear any error flags.
Program example
/* RPDL definitions */
#include "r_pdl_spi.h"
/* RPDL device-specific definitions */
#include "r_pdl_definitions.h"
void func(void)
{
uint32_t transmit_data[8];
uint32_t receive_data[8];
/* Transmit and receive all enabled frames once */
R_SPI_Transfer(
0,
PDL_NO_DATA,
transmit_data,
receive_data,
1,
PDL_NO_FUNC,
0
);
}
R20UT0084EE0112 Rev.1.12 Page 4-211
July. 16, 2014