Naze32 clone with Frysky receiver
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  1. /* mbed Microcontroller Library
  2. * Copyright (c) 2006-2013 ARM Limited
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #ifndef MBED_INTERRUPTIN_H
  17. #define MBED_INTERRUPTIN_H
  18. #include "platform.h"
  19. #if DEVICE_INTERRUPTIN
  20. #include "gpio_api.h"
  21. #include "gpio_irq_api.h"
  22. #include "FunctionPointer.h"
  23. namespace mbed {
  24. /** A digital interrupt input, used to call a function on a rising or falling edge
  25. *
  26. * Example:
  27. * @code
  28. * // Flash an LED while waiting for events
  29. *
  30. * #include "mbed.h"
  31. *
  32. * InterruptIn event(p16);
  33. * DigitalOut led(LED1);
  34. *
  35. * void trigger() {
  36. * printf("triggered!\n");
  37. * }
  38. *
  39. * int main() {
  40. * event.rise(&trigger);
  41. * while(1) {
  42. * led = !led;
  43. * wait(0.25);
  44. * }
  45. * }
  46. * @endcode
  47. */
  48. class InterruptIn {
  49. public:
  50. /** Create an InterruptIn connected to the specified pin
  51. *
  52. * @param pin InterruptIn pin to connect to
  53. * @param name (optional) A string to identify the object
  54. */
  55. InterruptIn(PinName pin);
  56. virtual ~InterruptIn();
  57. int read();
  58. #ifdef MBED_OPERATORS
  59. operator int();
  60. #endif
  61. /** Attach a function to call when a rising edge occurs on the input
  62. *
  63. * @param fptr A pointer to a void function, or 0 to set as none
  64. */
  65. void rise(void (*fptr)(void));
  66. /** Attach a member function to call when a rising edge occurs on the input
  67. *
  68. * @param tptr pointer to the object to call the member function on
  69. * @param mptr pointer to the member function to be called
  70. */
  71. template<typename T>
  72. void rise(T* tptr, void (T::*mptr)(void)) {
  73. _rise.attach(tptr, mptr);
  74. gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
  75. }
  76. /** Attach a function to call when a falling edge occurs on the input
  77. *
  78. * @param fptr A pointer to a void function, or 0 to set as none
  79. */
  80. void fall(void (*fptr)(void));
  81. /** Attach a member function to call when a falling edge occurs on the input
  82. *
  83. * @param tptr pointer to the object to call the member function on
  84. * @param mptr pointer to the member function to be called
  85. */
  86. template<typename T>
  87. void fall(T* tptr, void (T::*mptr)(void)) {
  88. _fall.attach(tptr, mptr);
  89. gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
  90. }
  91. /** Set the input pin mode
  92. *
  93. * @param mode PullUp, PullDown, PullNone
  94. */
  95. void mode(PinMode pull);
  96. /** Enable IRQ. This method depends on hw implementation, might enable one
  97. * port interrupts. For further information, check gpio_irq_enable().
  98. */
  99. void enable_irq();
  100. /** Disable IRQ. This method depends on hw implementation, might disable one
  101. * port interrupts. For further information, check gpio_irq_disable().
  102. */
  103. void disable_irq();
  104. static void _irq_handler(uint32_t id, gpio_irq_event event);
  105. protected:
  106. gpio_t gpio;
  107. gpio_irq_t gpio_irq;
  108. FunctionPointer _rise;
  109. FunctionPointer _fall;
  110. };
  111. } // namespace mbed
  112. #endif
  113. #endif