int main(void) {
uint8_t already = 0;
/* Set structs for all examples */
TM_USB_HIDDEVICE_Keyboard_t Keyboard;
TM_USB_HIDDEVICE_Gamepad_t Gamepad1, Gamepad2;
TM_USB_HIDDEVICE_Mouse_t Mouse;
/* Initialize system */
SystemInit();
/* Initialize leds */
TM_DISCO_LedInit();
/* Initialize button */
TM_DISCO_ButtonInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize USB HID Device */
TM_USB_HIDDEVICE_Init();
/* Set default values for mouse struct */
TM_USB_HIDDEVICE_MouseStructInit(&Mouse);
/* Set default values for keyboard struct */
TM_USB_HIDDEVICE_KeyboardStructInit(&Keyboard);
/* Set default values for gamepad structs */
TM_USB_HIDDEVICE_GamepadStructInit(&Gamepad1);
TM_USB_HIDDEVICE_GamepadStructInit(&Gamepad2);
while (1) {
/* If we are connected and drivers are OK */
if (TM_USB_HIDDEVICE_GetStatus() == TM_USB_HIDDEVICE_Status_Connected) {
/* Turn on green LED */
TM_DISCO_LedOn(LED_GREEN);
/* Simple sketch start */
/* If you pressed button right now and was not already pressed */
if (TM_DISCO_ButtonPressed() && already == 0) { /* Button on press */
already = 1;
/* Set pressed keys = WIN + R */
Keyboard.L_GUI = TM_USB_HIDDEVICE_Button_Pressed; /* Win button */
Keyboard.Key1 = 0x15; /* R */
/* Result = "Run" command */
/* Send keyboard report */
TM_USB_HIDDEVICE_KeyboardSend(&Keyboard);
} else if (!TM_DISCO_ButtonPressed() && already == 1) { /* Button on release */
already = 0;
/* Release all buttons */
Keyboard.L_GUI = TM_USB_HIDDEVICE_Button_Released; /* No button */
Keyboard.Key1 = 0x00; /* No key */
/* Result = Released everything */
/* Send keyboard report */
TM_USB_HIDDEVICE_KeyboardSend(&Keyboard);
}
/* Simple sketch end */
} else {
/* Turn off green LED */
TM_DISCO_LedOff(LED_GREEN);
}
}
}
int main(void) {
uint8_t already = 0;
/* Set structs for all examples */
TM_USB_HIDDEVICE_Keyboard_t Keyboard;
TM_USB_HIDDEVICE_Gamepad_t Gamepad1, Gamepad2;
TM_USB_HIDDEVICE_Mouse_t Mouse;
/* Initialize system */
SystemInit();
//Initialize LIS302DL - acceleration sensor;...
//... the board position determines the movement of joystick
LIS302DL_Init1();
/* Initialize leds */
TM_DISCO_LedInit();
/* Initialize button */
TM_DISCO_ButtonInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize USB HID Device */
TM_USB_HIDDEVICE_Init();
/* Set default values for mouse struct */
TM_USB_HIDDEVICE_MouseStructInit(&Mouse);
/* Set default values for keyboard struct */
TM_USB_HIDDEVICE_KeyboardStructInit(&Keyboard);
/* Set default values for gamepad structs */
TM_USB_HIDDEVICE_GamepadStructInit(&Gamepad1);
TM_USB_HIDDEVICE_GamepadStructInit(&Gamepad2);
//Variables
const int8_t axis_x_min = 0; //The number represents maximum deflection of left-stick on left; Default: -128 (!The value recommended for Unity game: 0 - Unity can read only not minus numbers of axis!)
const int8_t axis_x_max = 127; //The number represents maximum deflection of left-stick on right; Default: 127
const int8_t axis_x_avg = (axis_x_min + axis_x_max) / 2; //The value presented center position of left stick
const int8_t acc_x_min = -60; //Minimum (approximately) value reading from accelerometer for X-axis
const int8_t acc_x_max = 60; //Maximum (approximately) value reading from accelerometer for X-axis
const int8_t kx = (-axis_x_min + axis_x_max) / (-acc_x_min + acc_x_max); //Thanks to this ratio, can create universal formula on value of gamepad left-axis depends on STM-board position
const int8_t axis_y_min = 0; //The number represents maximum deflection of left-stick on top; Default: -128 (!The value recommended for Unity game: 0 - Unity can read only not minus numbers of axis!)
const int8_t axis_y_max = 127; //The number represents maximum deflection of left-stick on bottom; Default: 127
const int8_t axis_y_avg = (axis_y_min + axis_y_max) / 2; //The value presented center position of left stick
const int8_t acc_y_min = -60; //Minimum (approximately) value reading from accelerometer for Y-axis
const int8_t acc_y_max = 60; //Maximum (approximately) value reading from accelerometer for Y-axis
const int8_t ky = (-axis_y_min + axis_y_max) / (-acc_y_min + acc_y_max); //Thanks to this ratio, can create universal formula on value of gamepad left-axis depends on STM-board position
while (1) {
/* If we are connected and drivers are OK */
if (TM_USB_HIDDEVICE_GetStatus() == TM_USB_HIDDEVICE_Status_Connected) {
/* Turn on green LED */
TM_DISCO_LedOn(LED_GREEN);
/* Simple sketch start */
/* If you pressed button right now and was not already pressed */
if (TM_DISCO_ButtonPressed() && already == 0) { /* Button on press */
already = 1;
/* Gamepad 1 */
/* Simulate button 1 on gamepad 1 */
Gamepad1.Button1 = TM_USB_HIDDEVICE_Button_Pressed;
/* Send report for gamepad 1 */
TM_USB_HIDDEVICE_GamepadSend(TM_USB_HIDDEVICE_Gamepad_Number_1, &Gamepad1);
} else if (!TM_DISCO_ButtonPressed() && already == 1) { /* Button on release */
already = 0;
//I thought the command that is 5 lines below was sufficient but no...
//I released blue button but computer "thought" I still pressed it.
Gamepad1.Button1 = TM_USB_HIDDEVICE_Button_Released; //release button 1
/* Send command to release all buttons on both gamepads */
TM_USB_HIDDEVICE_GamepadReleaseAll(TM_USB_HIDDEVICE_Gamepad_Number_1);
}
// Read the board position on axes
LIS302DL_Read(&acc_x,LIS302DL_OUT_X_ADDR,1);
LIS302DL_Read(&acc_y,LIS302DL_OUT_Y_ADDR,1);
LIS302DL_Read(&acc_z,LIS302DL_OUT_Z_ADDR,1);
//The value on axis depends on board lean
//HERE: Changing orientation of left joystick under the influence of X-axis
/* Simulate left stick rotation */
/* X axis */
if (acc_x > -15 && acc_x < 15) //horizontal position of STM-board
{
Gamepad1.LeftXAxis = axis_x_avg;
}
else
{
if (acc_x >= acc_x_max - 10) //maximum right position --> vertical position of STM-board (USB mini-B on top of board)
{
Gamepad1.LeftXAxis = axis_x_max;
}
else
{
if (acc_x <= acc_x_min + 10) //maximum left position --> vertical position of STM-board (mini-jack out and USB micro-B on top )
{
Gamepad1.LeftXAxis = axis_x_min;
}
else
{
Gamepad1.LeftXAxis = acc_x * kx + axis_x_avg; //universal formula on left-stick position of gamepad depending on STM position
//it seems to be sufficient (without if-conditionals); but using of "if", it ensures more stability
}
}
}
/* Y axis */
if (acc_y > -15 && acc_y < 15) //horizontal position of STM-board
{
Gamepad1.LeftYAxis = axis_y_avg;
}
else
{
if (acc_y >= acc_x_max - 10) //maximum "up" position --> blue button of STM is higher than black reset-button
{
Gamepad1.LeftYAxis = axis_y_min;
}
else
{
if (acc_y <= acc_x_min + 10) //maximum "down" position --> black button of STM is higher than blue button
{
Gamepad1.LeftYAxis = axis_y_max;
}
else
{
Gamepad1.LeftYAxis = acc_y * (-ky) + axis_y_avg; //universal formula on left-stick position of gamepad depending on STM position
//it seems to be sufficient (without if-conditionals); but using of "if", it ensures more stability
}
}
}
TM_USB_HIDDEVICE_GamepadSend(TM_USB_HIDDEVICE_Gamepad_Number_1, &Gamepad1);
/* Simple sketch end */
} else {
/* Turn off green LED */
TM_DISCO_LedOff(LED_GREEN);
}
}
}
