SPI MKL25Z NO OUTPUP

piergiusepperan — Tue, 06 Oct 2015 14:13:47 GMT

HI, I'm trying to use the spi of the MKL25Z, but I can't get any output. I used the kinetis design studio and processore expert, so I setted the SPIMasterLDD: disable the Input Pin, enable and set the Output pin and the same for clock pin, chip select pin and clock rate. Now I attach my main code:

/* ###################################################################

** Filename : main.c

** Project : spi1

** Processor : MKL25Z128VLK4

** Version : Driver 01.01

** Compiler : GNU C Compiler

** Date/Time : 2015-10-06, 12:38, # CodeGen: 0

** Abstract :

** Main module.

** This module contains user's application code.

** Settings :

** Contents :

** No public methods

** ###################################################################*/

/*!

** @file main.c

** @version 01.01

** @brief

** Main module.

** This module contains user's application code.

/*!

** @addtogroup main_module main module documentation

** @{

/* MODULE main */

/* Including needed modules to compile this module/procedure */

#include "Cpu.h"

#include "Events.h"

#include "SM1.h"

#include "Bit1.h"

#include "BitIoLdd1.h"

/* Including shared modules, which are used for whole project */

#include "PE_Types.h"

#include "PE_Error.h"

#include "PE_Const.h"

#include "IO_Map.h"

/* User includes (#include below this line is not maintained by Processor Expert) */

void spi_send(uint8_t spiMsg);

/*lint -save -e970 Disable MISRA rule (6.3) checking. */

int main(void)

/*lint -restore Enable MISRA rule (6.3) checking. */

{

/* Write your local variable definition here */

/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/

PE_low_level_init();

/*** End of Processor Expert internal initialization. ***/

/* Write your code here */

uint8_t c1 = 0xFF; //1010000000000000

spi_send(c1); //send c1 high

/* For example: for(;;) { } */

/*** Don't write any code pass this line, or it will be deleted during code generation. ***/

/*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/

#ifdef PEX_RTOS_START

PEX_RTOS_START(); /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

#endif

/*** End of RTOS startup code. ***/

/*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/

for(;;){}

/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/

} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

/* END main */

/*!

** @}

** ###################################################################

** This file was created by Processor Expert 10.5 [05.21]

** for the Freescale Kinetis series of microcontrollers.

** ###################################################################

void spi_send(uint8_t spiMsg)

{

//while(!(SPI_S_SPTEF_MASK & SPI0_S))

//{

//asm("nop");

//}

SPI0_D = spiMsg;

}

If I connect the output pin of spi to an oscilloscope, I can see anything. I can do the debug but nothing happens. I removed the part

//while(!(SPI_S_SPTEF_MASK & SPI0_S))

//{

//asm("nop");

//}

because i want to send only one data for now. (I don't know if it is correct)

Plese, can you help me?

Re: SPI MKL25Z NO OUTPUP

Hui_Ma — Fri, 09 Oct 2015 06:24:44 GMT

Hi,

I would recommend to refer attached KL25 SPI example code.

Wish it helps.

Have a great day,
Ma Hui

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Kinetis Microcontrollers中的主题 Re: SPI MKL25Z NO OUTPUP

SPI MKL25Z NO OUTPUP

Re: SPI MKL25Z NO OUTPUP