Using the LPC54113 Microcontroller, I am attempting to configure Flexcomm 0 as an SPI Master. using the spi_sm_dma.c example provided in the instillation of MCUXpresso. Thus far I have modified the defines and pin muxing (as seen below) to change the SPI master from Flexcomm 5 to Flexcomm 0. The result of this change is a nonfunctional chip select and a clock signal that only outputs 8 cycles. Can anyone advise me on any other modifications that need to be made to get this configuration to work?
/*****************************************************************************
* Private types/enumerations/variables
****************************************************************************/
//#define SPI0_FLEXCOMM 5 /* SPI0 (master) is FLEXCOMM 5 */
//#define LPC_SPIMASTERPORT LPC_SPI0 /* Master SPI port */
//#define SPIMASTERIRQHANDLER SPI0_IRQHandler /* Master IRQ handler */
//#define LPC_SPIMASTERIRQNUM SPI0_IRQn /* Master IRQ number */
//#define SPI_MASTER_SSEL 2 /* Master select line */
#define SPI0_FLEXCOMM 0 /* SPI0 (master) is FLEXCOMM 0 */
#define LPC_SPIMASTERPORT LPC_SPI0 /* Master SPI port */
#define SPIMASTERIRQHANDLER SPI0_IRQHandler /* Master IRQ handler */
#define LPC_SPIMASTERIRQNUM SPI0_IRQn /* Master IRQ number */
#define SPI_MASTER_SSEL 0 /* Master select line */
#define SPI1_FLEXCOMM 3 /* SPI1 (slave) is FLEXCOMM 3 */
#define LPC_SPISLAVEPORT LPC_SPI1 /* Slave SPI port */
#define SPISLAVEIRQHANDLER SPI1_IRQHandler /* Slave IRQ handler */
#define LPC_SPISLAVEIRQNUM SPI1_IRQn /* Slave IRQ number */
#define SPI_SLAVE_SSEL 0 /* Slave select line */
//#define LPCMASTERCLOCKRATE 4000000 /* SPI clock rate */
#define LPCMASTERCLOCKRATE 1400000
#define BUFFER_CT 32 /* Buffer RX / TX count */
#define SPI_IO_CT 32 /* I/O SPI transfer count */
#define PR_LINE 4 /* display 4 lines */
#define PR_ITEM 8 /* display 8 items / line */
/* Initializes pin muxing for SPI1 interface */
static void Init_SPI_PinMux(void)
{
/* Slave - Connect the SPI1 signals to port pins - Flexcomm 3 */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 11, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI1_SCK */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 12, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI1_MOSI */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 13, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI1_MISO */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 14, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI1_SSEL0 */
/* Master - Connect the SPI0 signals to port pins - Flexcomm 5 */
//Chip_IOCON_PinMuxSet(LPC_IOCON, 1, 1, (IOCON_FUNC4 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_SSEL2 */
//Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 19, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_SCK */
//Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 20, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_MOSI */
//Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 18, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_MISO */
// Flexcomm 0
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 2, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_SSEL0 */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 4, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_SCK */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 0, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_MOSI */
Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 1, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_DIGITAL_EN)); /* SPI0_MISO */
}
