UM1756 datasheet(45/49 Pages) STMICROELECTRONICS

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UM1756

Programming section

21. Motor runs at constant speed of 50 steps/s in reverse direction | Run (DIR, SPD).

22. Motor softly stops after a few seconds | SoftStop.

23. The L6480 only: RESET KVAL_HOLD to initial value, RESET KVAL_RUN to initial

value.

The L6482 only: RESET TVAL_HOLD to initial value, RESET TVAL_RUN to initial

value. | SetParam (PARAM, VALUE).

24. Wait until not busy - busy status check in the Status register | GetStatus.

25. Motor moves by 100,000 steps forward | Move (DIR, N_STEP).

26. Wait until not busy - busy status check in the Status register | GetStatus.

27. Test of the Flag pin (pin 24) by polling, wait in endless cycle if problem is detected.

28. Motor moves to its home position | GoHome.

29. Wait until not busy - busy pin test (pin 22).

30. Motor goes to the absolute position 65535 through the shortest path | GoTo

(ABS_POS).

31. Wait until not busy - busy pin test (pin 22).

32. Motor goes in forward direction to the absolute position 131071 | GoTo_DIR

(DIR, ABS_POS).

33. Wait until not busy - busy pin test (pin 22).

34. The L6480 only: read run duty cycle (cSPIN_KVAL_RUN) parameter from device, read

intersect speed (cSPIN_INT_SPD) parameter from device.

The L6482 only: read run current (cSPIN_TVAL_RUN) parameter from device. |

GetParam(PARAM).

35. Read Status register content | GetStatus.

36. Read absolute position (cSPIN_ABS_POS) parameter from device |

GetParam(PARAM).

37. Reset position counter, actually | ResetPos.

38. Read absolute position (cSPIN_ABS_POS) parameter from device |

GetParam(PARAM).

39. Device disable power stage (High Impedance) immediately, as a consequence the

supply current drops | HardHiZ.

“Go until” example

40. Interrupt configuration for the SW MOTOR.

41. Motor motion in forward direction at speed 400 steps/s until the user puts a jumper on

J8, the LED_SPARE (YELLOW) toggles until the user puts a jumper on J8 |

GoUntil (ACT, DIR, SPD)

42. Motor stops.

43. The LED_SPARE (YELLOW) is switched off.

44. Wait until not busy - busy pin test (pin 22).

45. Motor moves by 50,000 steps reverse | Move (DIR, N_STEP)

46. Motor moves to the position saved by the GoUntil command into the MARK register, so

50000 steps forward | GoMark.

47. Wait until not busy - busy pin test (pin 22).

48. Nothing happens during a few seconds.

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