cmd_dtt.c 1.6 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #include <common.h>
  24. #include <config.h>
  25. #include <command.h>
  26. #include <dtt.h>
  27. #include <i2c.h>
  28. int do_dtt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
  29. {
  30. int i;
  31. unsigned char sensors[] = CONFIG_DTT_SENSORS;
  32. int old_bus;
  33. /* switch to correct I2C bus */
  34. old_bus = I2C_GET_BUS();
  35. I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
  36. /*
  37. * Loop through sensors, read
  38. * temperature, and output it.
  39. */
  40. for (i = 0; i < sizeof (sensors); i++)
  41. printf ("DTT%d: %i C\n", i + 1, dtt_get_temp (sensors[i]));
  42. /* switch back to original I2C bus */
  43. I2C_SET_BUS(old_bus);
  44. return 0;
  45. } /* do_dtt() */
  46. /***************************************************/
  47. U_BOOT_CMD(
  48. dtt, 1, 1, do_dtt,
  49. "Read temperature from Digital Thermometer and Thermostat",
  50. ""
  51. );