Teensy 4.1 core updated for C++20
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  1. /* Teensyduino Core Library
  2. * http://www.pjrc.com/teensy/
  3. * Copyright (c) 2013 PJRC.COM, LLC.
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining
  6. * a copy of this software and associated documentation files (the
  7. * "Software"), to deal in the Software without restriction, including
  8. * without limitation the rights to use, copy, modify, merge, publish,
  9. * distribute, sublicense, and/or sell copies of the Software, and to
  10. * permit persons to whom the Software is furnished to do so, subject to
  11. * the following conditions:
  12. *
  13. * 1. The above copyright notice and this permission notice shall be
  14. * included in all copies or substantial portions of the Software.
  15. *
  16. * 2. If the Software is incorporated into a build system that allows
  17. * selection among a list of target devices, then similar target
  18. * devices manufactured by PJRC.COM must be included in the list of
  19. * target devices and selectable in the same manner.
  20. *
  21. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  25. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  26. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  28. * SOFTWARE.
  29. */
  30. #include "usb_dev.h"
  31. #include "usb_joystick.h"
  32. #include "core_pins.h" // for yield()
  33. #include "HardwareSerial.h"
  34. #include <string.h> // for memcpy()
  35. #ifdef JOYSTICK_INTERFACE // defined by usb_dev.h -> usb_desc.h
  36. #if F_CPU >= 20000000
  37. uint32_t usb_joystick_data[3];
  38. // Maximum number of transmit packets to queue so we don't starve other endpoints for memory
  39. #define TX_PACKET_LIMIT 3
  40. static uint8_t transmit_previous_timeout=0;
  41. // When the PC isn't listening, how long do we wait before discarding data?
  42. #define TX_TIMEOUT_MSEC 30
  43. #if F_CPU == 192000000
  44. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1280)
  45. #elif F_CPU == 180000000
  46. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1200)
  47. #elif F_CPU == 168000000
  48. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)
  49. #elif F_CPU == 144000000
  50. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)
  51. #elif F_CPU == 120000000
  52. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)
  53. #elif F_CPU == 96000000
  54. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
  55. #elif F_CPU == 72000000
  56. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)
  57. #elif F_CPU == 48000000
  58. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
  59. #elif F_CPU == 24000000
  60. #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
  61. #endif
  62. int usb_joystick_send(void)
  63. {
  64. uint32_t wait_count=0;
  65. usb_packet_t *tx_packet;
  66. //serial_print("send");
  67. //serial_print("\n");
  68. while (1) {
  69. if (!usb_configuration) {
  70. //serial_print("error1\n");
  71. return -1;
  72. }
  73. if (usb_tx_packet_count(JOYSTICK_ENDPOINT) < TX_PACKET_LIMIT) {
  74. tx_packet = usb_malloc();
  75. if (tx_packet) break;
  76. }
  77. if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
  78. transmit_previous_timeout = 1;
  79. //serial_print("error2\n");
  80. return -1;
  81. }
  82. yield();
  83. }
  84. transmit_previous_timeout = 0;
  85. memcpy(tx_packet->buf, usb_joystick_data, 12);
  86. tx_packet->len = 12;
  87. usb_tx(JOYSTICK_ENDPOINT, tx_packet);
  88. //serial_print("ok\n");
  89. return 0;
  90. }
  91. #endif // F_CPU
  92. #endif // JOYSTICK_INTERFACE