PD Buddy Sink Firmware
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  1. /*
  2. * PD Buddy - USB Power Delivery for everyone
  3. * Copyright (C) 2017-2018 Clayton G. Hobbs <clay@lakeserv.net>
  4. *
  5. * This program is free software: you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation, either version 3 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. * GNU General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17. */
  18. #ifndef PDB_PE_H
  19. #define PDB_PE_H
  20. #include <stdbool.h>
  21. #include <stdint.h>
  22. #include <ch.h>
  23. #include "pdb_conf.h"
  24. /*
  25. * Events for the Policy Engine thread, sent by user code
  26. */
  27. /* Tell the PE to send a Get_Source_Cap message */
  28. #define PDB_EVT_PE_GET_SOURCE_CAP EVENT_MASK(7)
  29. /* Tell the PE that new power is required */
  30. #define PDB_EVT_PE_NEW_POWER EVENT_MASK(8)
  31. /*
  32. * Structure for Policy Engine thread and variables
  33. */
  34. struct pdb_pe {
  35. /* Policy Engine thread and working area */
  36. THD_WORKING_AREA(_wa, PDB_PE_WA_SIZE);
  37. thread_t *thread;
  38. /* PE mailbox for received PD messages */
  39. mailbox_t mailbox;
  40. /* PD message header template */
  41. uint16_t hdr_template;
  42. /* The received message we're currently working with */
  43. union pd_msg *_message;
  44. /* The most recent Request from the DPM */
  45. union pd_msg *_last_dpm_request;
  46. /* Whether or not we have an explicit contract */
  47. bool _explicit_contract;
  48. /* Whether or not we're receiving minimum power */
  49. bool _min_power;
  50. /* The number of hard resets we've sent */
  51. int8_t _hard_reset_counter;
  52. /* The result of the last Type-C Current match comparison */
  53. int8_t _old_tcc_match;
  54. /* The index of the first PPS APDO */
  55. uint8_t _pps_index;
  56. /* The index of the just-requested PPS APDO */
  57. uint8_t _last_pps;
  58. /* Virtual timer for SinkPPSPeriodicTimer */
  59. virtual_timer_t _sink_pps_periodic_timer;
  60. /* Queue for the PE mailbox */
  61. msg_t _mailbox_queue[PDB_MSG_POOL_SIZE];
  62. };
  63. #endif /* PDB_PE_H */