Sharing one documentation issue in KSDK 1.0 demo user guide

Document created by Cutworth Wang Employee on Feb 27, 2015Last modified by Diana Torres on Feb 28, 2017
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Recently one of our customers reported an issue when he tried to run "dspi_edma_demo" with KSDK 1.0 on K22F freedom board. He connected SPI signals between master and slave according to the demo user guide on freedom board, but the demo was not working.

 

I reproduced the issue on freedom and found this is due to incorrect documentation in demo user guide.

 

The connection table shown in demo user guide for K22F freedom board is as follows. This is not correct.

 

It should be the following table instead. 

Master

Connects to

Slave

Signal

Pin Name

Board Location

Pin Name

Board Location

SS

PTD0

J6 Pin 8

->

PTD4

J2 Pin 6

SCK

PTD1

J6 Pin 5

->

PTD5

J2 Pin 12

Data Out

PTD2

J6 Pin 6

->

PTD7

J2 Pin 10

Data In

PTD3

J6 Pin7

->

PTD6

J2 Pin 8

 

Also, the associated pin mux configuration in pin_mux.c file should be changed from the original workaround one in red to the original commented one.

 

void pin_mux_SPI(uint32_t instance)

 

{

 

  switch(instance) {

 

    case 0:                             /* SPI0 */

 

      /* PORTD_PCR0 */

 

      PORT_HAL_SetMuxMode(g_portBaseAddr[3],0u,kPortMuxAlt2);

 

      //PORT_HAL_SetMuxMode(g_portBaseAddr[2],4u,kPortMuxAlt2);   /*** Temporary work around until next board spin. ***/

 

      /* PORTD_PCR3 */

 

      PORT_HAL_SetMuxMode(g_portBaseAddr[3],3u,kPortMuxAlt2);

 

      //PORT_HAL_SetMuxMode(g_portBaseAddr[2],5u,kPortMuxAlt2);   /*** Temporary work around until next board spin. ***/

 

      /* PORTD_PCR1 */

 

      PORT_HAL_SetMuxMode(g_portBaseAddr[3],1u,kPortMuxAlt2);

 

      //PORT_HAL_SetMuxMode(g_portBaseAddr[2],6u,kPortMuxAlt2);   /*** Temporary work around until next board spin. ***/

 

      /* PORTD_PCR2 */

 

      PORT_HAL_SetMuxMode(g_portBaseAddr[3],2u,kPortMuxAlt2);

 

      //PORT_HAL_SetMuxMode(g_portBaseAddr[2],7u,kPortMuxAlt2);   /*** Temporary work around until next board spin. ***/

 

      break;

 

}

 

}

 

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