sensors.c

专业汽车级嵌入式操作系统OSEK的源代码

#include "platform_config.h"

#include "types.h"
#include "stack.h"
#include "threads.h"
#include "classes.h"
#include "language.h"
#include "sensors.h"
#include "poll.h"
#include "at91sam7s256.h"
#include "nxt_avr.h"

extern int verbose;

sensor_t sensors[N_SENSORS] = {
  {0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0},
  {0, 0, 0, 0, 0}
};

void
init_sensors(void)
{
  int i;

  for (i = 0; i < N_SENSORS; i++) {
    unset_digi0(i);
    unset_digi1(i);
    nxt_avr_set_input_power(i, 0);
  }
}

/**
 * Read sensor values
 */
void
poll_sensors(void)
{
  byte i;
  sensor_t *pSensor = sensors;

  for (i = 0; i < N_SENSORS; i++, pSensor++) {
    pSensor->value = sensor_adc(i);
  }
}

void
read_buttons(int dummy, short *output)
{
  *output = (short) buttons_get();
}


void
check_for_data(char *valid, char **nextbyte)
{
  *valid = 0;
}

void
set_digi0(int sensor)
{
  /* Enable output on the pin */

  int functions[] = { AT91C_PIO_PA23, AT91C_PIO_PA28,
    AT91C_PIO_PA29, AT91C_PIO_PA30
  };

  *AT91C_PIOA_PER |= functions[sensor];

  *AT91C_PIOA_OER |= functions[sensor];

  /* Set high */

  *AT91C_PIOA_SODR |= functions[sensor];

}

void
unset_digi0(int sensor)
{
  /* Enable output on the pin */

  int functions[] = { AT91C_PIO_PA23, AT91C_PIO_PA28,
    AT91C_PIO_PA29, AT91C_PIO_PA30
  };

  *AT91C_PIOA_PER |= functions[sensor];

  *AT91C_PIOA_OER |= functions[sensor];

  /* Set low */

  *AT91C_PIOA_CODR |= functions[sensor];

}

void
set_digi1(int sensor)
{
  /* Enable output on the pin */

  int functions[] = { AT91C_PIO_PA18, AT91C_PIO_PA19,
    AT91C_PIO_PA20, AT91C_PIO_PA2
  };

  *AT91C_PIOA_PER |= functions[sensor];

  *AT91C_PIOA_OER |= functions[sensor];

  /* Set high */

  *AT91C_PIOA_SODR |= functions[sensor];

}

void
unset_digi1(int sensor)
{
  /* Enable output on the pin */

  int functions[] = { AT91C_PIO_PA18, AT91C_PIO_PA19,
    AT91C_PIO_PA20, AT91C_PIO_PA2
  };

  *AT91C_PIOA_PER |= functions[sensor];

  *AT91C_PIOA_OER |= functions[sensor];

  /* Set low */

  *AT91C_PIOA_CODR |= functions[sensor];

}