init_serial

#include <net_config.h>

void init_serial (void);

The init_serial function initializes the serial driver. The function:

• sets the baud rate
• initializes the UART
• enables the interrupts for transmission and reception of data.

The init_serial function is part of RL-TCPnet. The prototype is defined in net_config.h.

note

• The TcpNet system calls init_serial during its startup.
• You must provide the init_serial function if the serial controller you use is different from the ones provided in the TCPnet source.

The init_serial function does not return any value.

com_getchar, com_putchar, com_tx_active

void init_serial (void) {
  /* Initialize the serial interface */
  rbuf.in   = 0;
  rbuf.out  = 0;
  tbuf.in   = 0;
  tbuf.out  = 0;
  tx_active = __FALSE;

  /* Enable RxD1 and TxD1 pins. */
  PINSEL0 = 0x00050000;
  /* 8-bits, no parity, 1 stop bit */
  U1LCR = 0x83;
  /* 19200 Baud Rate @ 15MHz VPB Clock */
  U1DLL = 49;
  U1DLM = 0;
  U1LCR = 0x03;
  /* Enable RDA and THRE interrupts. */
  U1IER = 0x03;
  /* Enable UART1 interrupts. */
  VICVectAddr14  = (U32)handler_UART1;
  VICVectCntl14  = 0x27;
  VICIntEnable   = 1 << 7;
}