HID-over-GATT implementation with the BLE API. This library allows to create devices such as mouse, keyboard or joystick, over Bluetooth Low Energy.
Dependents: BLENano_HID BLE_HID_MouseScrollDemo BLE_HID_KeyboardStreamDemo Shervs_TestKeyboard_TinyBLE ... more
The development repository is currently hosted on github. It contains examples and documentation. This is a snapshot of the library. The documentation can be read on github, or on docs.mbed.com.
JoystickService.h
- Committer:
- Jean-Philippe Brucker
- Date:
- 2015-09-15
- Revision:
- 0:cfd70fa91663
- Child:
- 1:7a6c2e2c9371
File content as of revision 0:cfd70fa91663:
#include "mbed.h" #include "HIDServiceBase.h" enum ButtonState { BUTTON_UP, BUTTON_DOWN }; enum JoystickButton { JOYSTICK_BUTTON_1 = 0x1, JOYSTICK_BUTTON_2 = 0x2, }; report_map_t JOYSTICK_REPORT_MAP = { USAGE_PAGE(1), 0x01, // Generic Desktop USAGE(1), 0x04, // Joystick COLLECTION(1), 0x01, // Application COLLECTION(1), 0x00, // Physical USAGE_PAGE(1), 0x09, // Buttons USAGE_MINIMUM(1), 0x01, USAGE_MAXIMUM(1), 0x03, LOGICAL_MINIMUM(1), 0x00, LOGICAL_MAXIMUM(1), 0x01, REPORT_COUNT(1), 0x03, // 2 bits (Buttons) REPORT_SIZE(1), 0x01, INPUT(1), 0x02, // Data, Variable, Absolute REPORT_COUNT(1), 0x01, // 6 bits (Padding) REPORT_SIZE(1), 0x05, INPUT(1), 0x01, // Constant USAGE_PAGE(1), 0x01, // Generic Desktop USAGE(1), 0x30, // X USAGE(1), 0x31, // Y USAGE(1), 0x32, // Z USAGE(1), 0x33, // Rx LOGICAL_MINIMUM(1), 0x81, // -127 LOGICAL_MAXIMUM(1), 0x7f, // 127 REPORT_SIZE(1), 0x08, // Three bytes REPORT_COUNT(1), 0x04, INPUT(1), 0x02, // Data, Variable, Absolute (unlike mouse) END_COLLECTION(0), END_COLLECTION(0), }; uint8_t report[] = { 0, 0, 0, 0, 0 }; class JoystickService: public HIDServiceBase { public: JoystickService(BLE &_ble) : HIDServiceBase(_ble, JOYSTICK_REPORT_MAP, sizeof(JOYSTICK_REPORT_MAP), inputReport = report, outputReport = NULL, featureReport = NULL, inputReportLength = sizeof(inputReport), outputReportLength = 0, featureReportLength = 0, reportTickerDelay = 20), buttonsState (0), failedReports (0) { speed[0] = 0; speed[1] = 0; speed[2] = 0; speed[3] = 0; startReportTicker(); } int setSpeed(int8_t x, int8_t y, int8_t z) { speed[0] = x; speed[1] = y; speed[2] = z; return 0; } int setButton(JoystickButton button, ButtonState state) { if (state == BUTTON_UP) buttonsState &= ~(button); else buttonsState |= button; return 0; } virtual void sendCallback(void) { if (!connected) return; report[0] = buttonsState & 0x7; report[1] = speed[0]; report[2] = speed[1]; report[3] = speed[2]; report[4] = speed[3]; if (send(report)) failedReports++; } protected: uint8_t buttonsState; uint8_t speed[4]; public: uint32_t failedReports; };