UART4 at customer K10 board

dominikfallmann — Wed, 02 Aug 2017 15:37:20 GMT

I will run the uart4 of MK10FX512VLQ12.

If I set the register UART4_C1 then the controller jumps to "Default_Handler".

I don't understand why this is?

#include <stdint.h>

#include "MK10FX512.h"

#include "pin_mux.h"

#define UIP unsigned int *

const uint8_t buffStart[] = "\r\n UART Send Example \r\n\0";

void UART_PutChar(uint8_t u8Char)

{

/* Wait until space is available in the FIFO */

while (!*(UIP)(UART4_S1 & TDRE));

/* Send the character */

*(UIP)UART4_D = (uint8_t)u8Char;

}

int main(void)

{

int i = 0;

*(UIP)SIM_SCGC5 |= PORTC; /* Port C Clock Gate Control: Clock enabled */

*(UIP)PORTC_PCR14 |= MUX_ALT3; /* DB_RX PTC14 as UART4_RX */

*(UIP)PORTC_PCR15 |= MUX_ALT3; /* DB_TX PTC15 as UART4_TX */

/* uart4 display board */

/* Enable the clock to the selected UART */

*(UIP)SIM_SCGC1 |= UART4; /* UART4 switch on */

/* Make sure that the transmitter and receiver are disabled while we change settings. */

*(UIP)UART4_C2 = 0x00;

/* Configure the UART for 8-bit mode, no parity */

*(UIP)UART4_C1 = 0x00;

/* Set baud rate referring K10P144M120SF3RM.pdf table 48-351 */

/* SBR */

*(UIP)UART4_BDH &= ~(UART_BDH_SBR_MASK); // 0x1F

*(UIP)UART4_BDL = 0x21;

/* BRFA */

*(UIP)UART4_C4 &= ~(UART_C4_BRFA_MASK);

/* Enable receiver and transmitter */

*(UIP)UART4_C2 |= (UART_PE | UART_TE);

while(buffStart[i] != '\0')

{

UART_PutChar(buffStart[i++]);

}

for (;;) {

}

return 0;

}

Re: UART4 at customer K10 board

dominikfallmann — Thu, 03 Aug 2017 06:04:37 GMT

I found my fault. The uart register is 8 bit and therefor I have to use a point to an 8 bit int.

#define UI8P uint8_t *

Re: UART4 at customer K10 board

dominikfallmann — Fri, 04 Aug 2017 07:32:00 GMT

At the attachment you can find the correct source with an UART4 and PIT example.

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UART4 at customer K10 board

Re: UART4 at customer K10 board

Re: UART4 at customer K10 board