hello:
I have an application that needs 3 SPI slave devices to connect to 1 master device (MPC5744P), and the three slave devices have a difference on the clock and transfer attributes. So I want to use different CTARs register to link to the related slave devices, however, the SDK drivers do not seem to support this feature.
void ec_spi0_init(void)
{
DSPI(0).MCR.B.MSTR = 1; /* SPI Mode, Master or Slave */
DSPI(0).MCR.B.CONT_SCKE = 0;
DSPI(0).MCR.B.DCONF = 0; /* Configure DSPI_A in SPI, DSI or CSI configuration */
DSPI(0).MCR.B.PCSIS = 0b00000011;
DSPI(0).MCR.B.MDIS = !1; /* SPI Moudle enable */
DSPI(0).MCR.B.HALT = 1; /* Stop transfer */
DSPI(0).MODE.CTAR[0].B.DBR = DBR0; /* Duty cycle is configurable */
DSPI(0).MODE.CTAR[0].B.FMSZ = 0b0111;/* Frame size=8 */
DSPI(0).MODE.CTAR[0].B.PCSSCK = 0b01;/* PCS to SCK delay scaler, 3 */
DSPI(0).MODE.CTAR[0].B.CSSCK = 0b0100;/* PCS to SCK delay scaler, 32 */
DSPI(0).MODE.CTAR[0].B.ASC = 0b0100; /* After SCK delay scaler */
DSPI(0).MODE.CTAR[0].B.DT = 0b0100; /* Delay after transfer scaler */
DSPI(0).MODE.CTAR[0].B.CPOL = 0; /* Clock polarity, 0 means the inactive state of SCK is low, 1 means high */
DSPI(0).MODE.CTAR[0].B.CPHA = 1; /* Clock phase, 0 means data is captured on the leading edge of SCK */
DSPI(0).MODE.CTAR[0].B.LSBFE = 0; /* LSB first enable, 0: MSB first; 1: LSB first */
DSPI(0).MODE.CTAR[0].B.PBR = 0; /* Baud rate prescaler */
DSPI(0).MODE.CTAR[0].B.BR = 4; /* Baud rate scaler */
DSPI(0).MODE.CTAR[1].B.DBR = DBR0; /* Duty cycle is configurable */
DSPI(0).MODE.CTAR[1].B.FMSZ = 0b0111;/* Frame size=8 */
DSPI(0).MODE.CTAR[1].B.PCSSCK = 0b01;/* PCS to SCK delay scaler, 3 */
DSPI(0).MODE.CTAR[1].B.CSSCK = 0b0100;/* PCS to SCK delay scaler, 32 */
DSPI(0).MODE.CTAR[1].B.ASC = 0b0100; /* After SCK delay scaler */
DSPI(0).MODE.CTAR[1].B.DT = 0b0100; /* Delay after transfer scaler */
DSPI(0).MODE.CTAR[1].B.CPOL = 0; /* Clock polarity, 0 means the inactive state of SCK is low, 1 means high */
DSPI(0).MODE.CTAR[1].B.CPHA = 0; /* Clock phase, 0 means data is captured on the leading edge of SCK */
DSPI(0).MODE.CTAR[1].B.LSBFE = 0; /* LSB first enable, 0: MSB first; 1: LSB first */
DSPI(0).MODE.CTAR[1].B.PBR = 0; /* Baud rate prescaler */
DSPI(0).MODE.CTAR[1].B.BR = 3; /* Baud rate scaler */
DSPI(0).MCR.B.HALT = 0; /* Start transfer */
}
