Semáforos (Código)

Código del programa.

#include"Cpu.h"

#include"Events.h"

#include"mqx_tasks.h"

#include"CsIO1.h"

#include"IO1.h"

voiduart_putchar (int, char );

charuart_getchar (int );

#define t_out      500

LWSEM_STRUCT my_lwsem;

voidCrea_Sem(uint32_t task_init_data)

{

//_mqx_uint result;

//printf("CreandoSemaforo");

                _lwsem_create(&my_lwsem, 1);

//result = _lwsem_wait(&my_lwsem);

  _task_abort(_task_get_id());

}

voidLed_Rojo(uint32_t task_init_data)

{

                _mqx_uint result;

               

while(1)

  {

                //printf("TareaRojo");

               

                result = _lwsem_wait(&my_lwsem);

                uart_putchar(0,'R');

                Red_LED_ClrVal(Red_LED_DeviceData);

    Blue_LED_SetVal(Blue_LED_DeviceData);

    Green_LED_SetVal(Green_LED_DeviceData);

_time_delay_ticks(t_out);   //suspendelatareapor el numerode ticks especificadopor el argumento

_lwsem_post(&my_lwsem);   

  }

}

voidLed_Verde(uint32_t task_init_data)

{

                _mqx_uint result;

                              

                while(1) {

                               result = _lwsem_wait(&my_lwsem);

                               uart_putchar(0, 'V');                                                          

                               Red_LED_SetVal(Red_LED_DeviceData);

                    Blue_LED_SetVal(Blue_LED_DeviceData);

                    Green_LED_ClrVal(Green_LED_DeviceData);

                _time_delay_ticks(t_out);   //suspendelatareapor el numerode ticks especificado                           _lwsem_post(&my_lwsem);   

                  }

}

voidLed_Azul(uint32_t task_init_data)

{

                _mqx_uint result;

                while(1)

                  {

                result = _lwsem_wait(&my_lwsem);

                uart_putchar(0,'A');

                Red_LED_SetVal(Red_LED_DeviceData);

                    Blue_LED_ClrVal(Blue_LED_DeviceData);

                    Green_LED_SetVal(Green_LED_DeviceData);

                _time_delay_ticks(t_out);   //suspendelatareapor el numerode ticks especificado                                           _lwsem_post(&my_lwsem);   

                  }

}

voiduart_putchar (int uart_port_num, char ch)

{

                if (uart_port_num == 0)

                {

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

while(!(UART0_S1 & UART_S1_TDRE_MASK));

/* Send the character */

      UART0_D = (uint8)ch;

                }

                elseif (uart_port_num == 1)

                {

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

                while(!(UART1_S1 & UART_S1_TDRE_MASK));

               

                /* Send the character */

                  UART1_D = (uint8)ch;

                }

                else

                {

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

                while(!(UART2_S1 & UART_S1_TDRE_MASK));

               

                /* Send the character */

                  UART2_D = (uint8)ch;

                }

 }

charuart_getchar (int uart_port_num)

{

                if (uart_port_num == 0)

                {

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

while(!(UART0_S1 & UART_S1_RDRF_MASK));

/* Send the character */

return (uint8)UART0_D;

                }

                elseif (uart_port_num == 1)

                {

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

                while(!(UART1_S1 & UART_S1_RDRF_MASK));

               

                /* Send the character */

                return (uint8)UART1_D;

                }

                else

                {

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

                while(!(UART2_S1 & UART_S1_RDRF_MASK));

               

                /* Send the character */

                return (uint8)UART2_D;

                }

}