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_DIGITALOUT_H
  17. #define MBED_DIGITALOUT_H
  18. #include "platform.h"
  19. #include "gpio_api.h"
  20. namespace mbed {
  21. /** A digital output, used for setting the state of a pin
  22. *
  23. * Example:
  24. * @code
  25. * // Toggle a LED
  26. * #include "mbed.h"
  27. *
  28. * DigitalOut led(LED1);
  29. *
  30. * int main() {
  31. * while(1) {
  32. * led = !led;
  33. * wait(0.2);
  34. * }
  35. * }
  36. * @endcode
  37. */
  38. class DigitalOut {
  39. public:
  40. /** Create a DigitalOut connected to the specified pin
  41. *
  42. * @param pin DigitalOut pin to connect to
  43. */
  44. DigitalOut(PinName pin) : gpio() {
  45. gpio_init_out(&gpio, pin);
  46. }
  47. /** Create a DigitalOut connected to the specified pin
  48. *
  49. * @param pin DigitalOut pin to connect to
  50. * @param value the initial pin value
  51. */
  52. DigitalOut(PinName pin, int value) : gpio() {
  53. gpio_init_out_ex(&gpio, pin, value);
  54. }
  55. /** Set the output, specified as 0 or 1 (int)
  56. *
  57. * @param value An integer specifying the pin output value,
  58. * 0 for logical 0, 1 (or any other non-zero value) for logical 1
  59. */
  60. void write(int value) {
  61. gpio_write(&gpio, value);
  62. }
  63. /** Return the output setting, represented as 0 or 1 (int)
  64. *
  65. * @returns
  66. * an integer representing the output setting of the pin,
  67. * 0 for logical 0, 1 for logical 1
  68. */
  69. int read() {
  70. return gpio_read(&gpio);
  71. }
  72. /** Return the output setting, represented as 0 or 1 (int)
  73. *
  74. * @returns
  75. * Non zero value if pin is connected to uc GPIO
  76. * 0 if gpio object was initialized with NC
  77. */
  78. int is_connected() {
  79. return gpio_is_connected(&gpio);
  80. }
  81. #ifdef MBED_OPERATORS
  82. /** A shorthand for write()
  83. */
  84. DigitalOut& operator= (int value) {
  85. write(value);
  86. return *this;
  87. }
  88. DigitalOut& operator= (DigitalOut& rhs) {
  89. write(rhs.read());
  90. return *this;
  91. }
  92. /** A shorthand for read()
  93. */
  94. operator int() {
  95. return read();
  96. }
  97. #endif
  98. protected:
  99. gpio_t gpio;
  100. };
  101. } // namespace mbed
  102. #endif