main.c 3.4 KB

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  1. /* Name: main.c
  2. * Project: hid-mouse, a very simple HID example
  3. * Author: Christian Starkjohann
  4. * Creation Date: 2008-04-07
  5. * Tabsize: 4
  6. * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
  7. * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
  8. * This Revision: $Id: main.c 790 2010-05-30 21:00:26Z cs $
  9. */
  10. #include <stdint.h>
  11. #include <avr/interrupt.h>
  12. #include <avr/power.h>
  13. #include <avr/wdt.h>
  14. #include <avr/sleep.h>
  15. #include <usbdrv/usbdrv.h>
  16. #include "vusb.h"
  17. #include "keyboard.h"
  18. #include "host.h"
  19. #include "timer.h"
  20. #include "print.h"
  21. #include "suspend.h"
  22. #include "wait.h"
  23. #include "sendchar.h"
  24. #ifdef SLEEP_LED_ENABLE
  25. # include "sleep_led.h"
  26. #endif
  27. #ifdef CONSOLE_ENABLE
  28. void console_task(void);
  29. #endif
  30. #ifdef RAW_ENABLE
  31. void raw_hid_task(void);
  32. #endif
  33. /* This is from main.c of USBaspLoader */
  34. static void initForUsbConnectivity(void) {
  35. uint8_t i = 0;
  36. usbInit();
  37. /* enforce USB re-enumerate: */
  38. usbDeviceDisconnect(); /* do this while interrupts are disabled */
  39. while (--i) { /* fake USB disconnect for > 250 ms */
  40. wdt_reset();
  41. wait_ms(1);
  42. }
  43. usbDeviceConnect();
  44. }
  45. static void usb_remote_wakeup(void) {
  46. cli();
  47. int8_t ddr_orig = USBDDR;
  48. USBOUT |= (1 << USBMINUS);
  49. USBDDR = ddr_orig | USBMASK;
  50. USBOUT ^= USBMASK;
  51. wait_ms(25);
  52. USBOUT ^= USBMASK;
  53. USBDDR = ddr_orig;
  54. USBOUT &= ~(1 << USBMINUS);
  55. sei();
  56. }
  57. /** \brief Setup USB
  58. *
  59. * FIXME: Needs doc
  60. */
  61. static void setup_usb(void) {
  62. initForUsbConnectivity();
  63. // for Console_Task
  64. print_set_sendchar(sendchar);
  65. }
  66. /** \brief Main
  67. *
  68. * FIXME: Needs doc
  69. */
  70. int main(void) __attribute__((weak));
  71. int main(void) {
  72. bool suspended = false;
  73. #if USB_COUNT_SOF
  74. uint16_t last_timer = timer_read();
  75. #endif
  76. #ifdef CLKPR
  77. // avoid unintentional changes of clock frequency in devices that have a
  78. // clock prescaler
  79. clock_prescale_set(clock_div_1);
  80. #endif
  81. keyboard_setup();
  82. host_set_driver(vusb_driver());
  83. setup_usb();
  84. sei();
  85. wait_ms(50);
  86. keyboard_init();
  87. #ifdef SLEEP_LED_ENABLE
  88. sleep_led_init();
  89. #endif
  90. while (1) {
  91. #if USB_COUNT_SOF
  92. if (usbSofCount != 0) {
  93. suspended = false;
  94. usbSofCount = 0;
  95. last_timer = timer_read();
  96. # ifdef SLEEP_LED_ENABLE
  97. sleep_led_disable();
  98. # endif
  99. } else {
  100. // Suspend when no SOF in 3ms-10ms(7.1.7.4 Suspending of USB1.1)
  101. if (timer_elapsed(last_timer) > 5) {
  102. suspended = true;
  103. # ifdef SLEEP_LED_ENABLE
  104. sleep_led_enable();
  105. # endif
  106. }
  107. }
  108. #endif
  109. if (!suspended) {
  110. usbPoll();
  111. // TODO: configuration process is inconsistent. it sometime fails.
  112. // To prevent failing to configure NOT scan keyboard during configuration
  113. if (usbConfiguration && usbInterruptIsReady()) {
  114. keyboard_task();
  115. }
  116. vusb_transfer_keyboard();
  117. #ifdef RAW_ENABLE
  118. usbPoll();
  119. if (usbConfiguration && usbInterruptIsReady3()) {
  120. raw_hid_task();
  121. }
  122. #endif
  123. #ifdef CONSOLE_ENABLE
  124. usbPoll();
  125. if (usbConfiguration && usbInterruptIsReady3()) {
  126. console_task();
  127. }
  128. #endif
  129. } else if (suspend_wakeup_condition()) {
  130. usb_remote_wakeup();
  131. }
  132. }
  133. }