submain.c

Lcd test demo code based on St arm mcu

/*
** Copyright (C) ARM Limited, 2002. All rights reserved.
*/

/*
** $Sub$$main() is executed immediately before the user defined main() function.
** Compile this with -DUSE_SERIAL_PORT to initialize serial port on Integrator.
** For information on $Sub and $Super, see ADS 1.2 Linker and Utilities Guide
*/

#include "71x_lib.h"

__weak extern void cache_init(void);
extern void $Super$$main(void);

#ifdef USE_SERIAL_PORT
  void init_serial(void);
#endif
#ifdef USE_LCD
void LCDInit(void);
#endif

void $Sub$$main(void)
{
  int temp;
  cache_init();                    // enables caches

  #ifdef DEBUG
    debug();
  #endif

  #ifdef USE_SERIAL_PORT
    init_serial();                 // initialize the UART0
  #endif
  
  #ifdef USE_LCD
    LCDInit();
  #endif

  __asm                      // enable IRQs
	{
		MRS temp, CPSR
		BIC temp, temp, #0x80
		MSR CPSR_c, temp
	}
  $Super$$main();                  // calls the original function main()
}


#ifdef USE_SERIAL_PORT
void init_serial()
{

#define UART0_Rx_Pin (0x0001<<8)
#define UART0_Tx_Pin (0x0001<<9)

  // Configure the GPIO pins
  GPIO_Config(GPIO0, UART0_Tx_Pin, GPIO_AF_PP);
  GPIO_Config(GPIO0, UART0_Rx_Pin, GPIO_IN_TRI_CMOS);

  // Configure the UART 0
  UART_OnOffConfig(UART0, ENABLE);       // Turn UART0 on
  UART_FifoConfig (UART0, ENABLE);       // ENABLE FIFOs
  UART_FifoReset  (UART0 , UART_RxFIFO); // Reset the UART_RxFIFO
  UART_FifoReset  (UART0 , UART_TxFIFO); // Reset the UART_TxFIFO
  UART_LoopBackConfig(UART0 , DISABLE);  // Disable Loop Back
                                         /* Configure the UART0 as following:
                                            - Baudrate = 9600 Bps
                                            - No parity
                                            - 8 data bits
                                            - 1 stop bit */
  UART_Config(UART0,9600,UART_NO_PARITY,UART_1_StopBits,UARTM_8D);
  UART_RxConfig(UART0 ,DISABLE);          // DISABLE Rx

}
#endif

#ifdef USE_LCD

void LCDInit(void)
{
  u8 characT[]={0x0E, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00};
  u8 characM[]={0x1B, 0x15, 0x11, 0x00, 0x00, 0x00, 0x00};
//  char szBuffer[16+1];

  LCD_Init();
  LCD_SetCursorHome();
  LCD_CreateCharacter(0x1, characT);
  LCD_CreateCharacter(0x2, characM);
  LCD_UnderlineCursorOn();
  gotoxy(1,1);
}
#endif