print_funcs.c

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#include "print_funcs.h"

void init_dbg_rs232( long cpu_hz )
{
        struct usart_options_t usart_opt;

        avr32_pio_t *pio = (void *) AVR32_PIOB_ADDRESS;
        avr32_usart_t *usart0 = (void *) AVR32_USART0_ADDRESS;

        /* Set correct PIO for USART0*/
        pio->pdr = 0x00000300;
        pio->asr = 0x00000300;

        /* Options for USART debugging */
        usart_opt.baudrate = 115200;
        usart_opt.charlength = 8;
        usart_opt.paritytype = USART_NO_PARITY;
        usart_opt.stopbits = USART_1_STOPBIT;
        usart_opt.channelmode = USART_NORMAL_CHMODE;

        /* Initialize it in RS232 mode */
        usart_init_rs232(usart0, &usart_opt, cpu_hz);
}

void print_dbg(char *str)
{
        avr32_usart_t *usart0 = (void *) AVR32_USART0_ADDRESS;
        print(usart0, str);
}

void print_dbg_ulong(unsigned long n)
{
        avr32_usart_t *usart0 = (void *) AVR32_USART0_ADDRESS;
        print_ulong(usart0, n);
}

void print_dbg_hex(unsigned long n)
{
        avr32_usart_t *usart0 = (void *) AVR32_USART0_ADDRESS;
        print_hex(usart0, n);
}

int print(volatile avr32_usart_t * usart, char *str)
{
        while (*str != '\0')
                usart_putchar(usart, *str++);
        return 0;
}

int print_char(volatile avr32_usart_t * usart, int c)
{
        usart_putchar(usart, c);
        return 0;
}


void print_ulong(volatile avr32_usart_t * usart, unsigned long n)
{
  char tmp[16];
  int i = sizeof(tmp) - 1;

  tmp[i] = 0;
  do {
    tmp[--i] = (n % 10) + '0';
    n /= 10;
  } while (n);

  print(usart, tmp + i);
}

void print_hex(volatile avr32_usart_t * usart, unsigned long n)
{
  char tmp[9];
  int i;

  for (i = 0; i < 8; i++) {
    unsigned long nibble;

    nibble = (n >> (28 - 4 * i)) & 0xf;
    if (nibble < 10)
      tmp[i] = nibble + '0';
    else
      tmp[i] = nibble - 10 + 'a';
  }
  tmp[8] = 0;

  print(usart, tmp);
}

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