mips_sys

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#include "uart.h"
static volatile unsigned char *const uart_ptr =
  (volatile unsigned char *)0x80000300;
/**
 * @brief configure baudrate scaler
 * @param[in] scale baudrate scaler (1 = 7.143 Mhz)
 */
void uart_cfg_scale(unsigned short scale)
{
  *(unsigned short *)(uart_ptr + 0) = scale;
}
/**
 * @brief configure number of data bits
 * @param[in] bits number of data bits
 */
void uart_cfg_bits(unsigned char bits)
{
  *(uart_ptr + 2) = bits;
}
/**
 * @brief configure number of stop bits
 * @param[in] stop number of stop bits
 */
void uart_cfg_stop(unsigned char stop)
{
  *(uart_ptr + 3) = stop;
}
/**
 * @brief transmit a character
 * @param[in] chr character to transmit
 */
void uart_tx(unsigned short chr)
{
  while (!*(uart_ptr + 4));
  *(unsigned short *)(uart_ptr + 8) = chr;
}
 
 
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