| 0,0 → 1,139 |
|---|
| #include "defines.h" |
| #include "CONTROLLERS.h" |
| #include "I2C1.h" |
| |
| static CONTROLLER_DATA *ctrl_data_p; |
| static BOARD_STATE *board_state_p; |
| |
| void Controller_Init(CONTROLLER_DATA *data, BOARD_STATE *state, |
| void (*btn_change_callback)(uint8_t, uint8_t)) { |
| ctrl_data_p = data; |
| board_state_p = state; |
| |
| ctrl_data_p->btn_change_callback = btn_change_callback; |
| |
| ctrl_data_p->ctrl_1_connected = 0; |
| ctrl_data_p->ctrl_1_buttons_prev = CONTROLLER_BTN_DEFAULT; |
| ctrl_data_p->ctrl_1_leds = CONTROLLER_LED_DEFAULT; |
| ctrl_data_p->ctrl_1_active = 0; |
| |
| ctrl_data_p->ctrl_2_connected = 0; |
| ctrl_data_p->ctrl_2_buttons_prev = CONTROLLER_BTN_DEFAULT; |
| ctrl_data_p->ctrl_2_leds = CONTROLLER_LED_DEFAULT; |
| ctrl_data_p->ctrl_2_active = 0; |
| } |
| |
| void Controller_Update(void) { |
| uint8_t buffer[2]; |
| uint8_t result, length; |
| uint8_t ctrl_1_btn = 0, ctrl_2_btn = 0; |
| |
| // Read button values from controllers |
| I2C1_Master_Restart(CONTROLLER_1_ADDRESS, CONTROLLER_READ, 1); |
| do { |
| result = I2C1_Get_Status(); |
| } while (!result); |
| if (result == I2C1_RECV_OK) { |
| // Indicate that controller 1 is connected |
| LED1_LAT = 1; |
| ctrl_data_p->ctrl_1_connected = 1; |
| length = I2C1_Read_Buffer(buffer); |
| buffer[0] = ~buffer[0]; |
| // Button change detected |
| if (ctrl_data_p->ctrl_1_buttons_prev != buffer[0]) { |
| // Check if a button has been pressed since startup |
| if (!ctrl_data_p->ctrl_1_active) { |
| ctrl_data_p->ctrl_1_active = 1; |
| } |
| // Figure out which button has changed |
| ctrl_1_btn = ctrl_data_p->ctrl_1_buttons_prev ^ buffer[0]; |
| // Save the button if it went from unpressed -> pressed |
| ctrl_1_btn &= buffer[0]; |
| } |
| ctrl_data_p->ctrl_1_buttons_prev = buffer[0]; |
| } else { |
| LED1_LAT = 0; |
| ctrl_data_p->ctrl_1_connected = 0; |
| ctrl_data_p->ctrl_1_active = 0; |
| } |
| |
| I2C1_Master_Restart(CONTROLLER_2_ADDRESS, CONTROLLER_READ, 1); |
| do { |
| result = I2C1_Get_Status(); |
| } while (!result); |
| if (result == I2C1_RECV_OK) { |
| // Indicate that controller 2 is connected |
| LED2_LAT = 1; |
| ctrl_data_p->ctrl_2_connected = 1; |
| length = I2C1_Read_Buffer(buffer); |
| buffer[0] = ~buffer[0]; |
| // Button change detected |
| if (ctrl_data_p->ctrl_2_buttons_prev != buffer[0]) { |
| // Check if a button has been pressed since startup |
| if (!ctrl_data_p->ctrl_2_active) { |
| ctrl_data_p->ctrl_2_active = 1; |
| } |
| // Figure out which button has changed |
| ctrl_2_btn = ctrl_data_p->ctrl_2_buttons_prev ^ buffer[0]; |
| // Save the button if it went from unpressed -> pressed |
| ctrl_2_btn &= buffer[0]; |
| } |
| ctrl_data_p->ctrl_2_buttons_prev = buffer[0]; |
| } else { |
| LED2_LAT = 0; |
| ctrl_data_p->ctrl_2_connected = 0; |
| ctrl_data_p->ctrl_2_active = 0; |
| } |
| |
| // Write LED values to controllers |
| if (ctrl_data_p->ctrl_1_connected) { |
| buffer[0] = CONTROLLER_WRITE; |
| buffer[1] = ctrl_data_p->ctrl_1_leds; |
| I2C1_Master_Send(CONTROLLER_1_ADDRESS, buffer, 2); |
| do { |
| result = I2C1_Get_Status(); |
| } while (!result); |
| } |
| |
| if (ctrl_data_p->ctrl_2_connected) { |
| buffer[0] = CONTROLLER_WRITE; |
| buffer[1] = ctrl_data_p->ctrl_2_leds; |
| I2C1_Master_Send(CONTROLLER_2_ADDRESS, buffer, 2); |
| do { |
| result = I2C1_Get_Status(); |
| } while (!result); |
| } |
| |
| // If board is in an idle state and a controller is connected, switch modes |
| if (board_state_p->cube_mode == BOARD_MODE_IDLE) { |
| // If both controllers are active, go into game TRON mode |
| if (ctrl_data_p->ctrl_1_active && ctrl_data_p->ctrl_2_active) { |
| board_state_p->cube_mode = BOARD_MODE_TRON; |
| Reset_Board(); |
| } |
| // Otherwise if only one controller is active, go into game SNAKE mode |
| if (ctrl_data_p->ctrl_1_active || ctrl_data_p->ctrl_2_active) { |
| board_state_p->cube_mode = BOARD_MODE_SNAKE; |
| Reset_Board(); |
| } |
| } |
| if (board_state_p->cube_mode == BOARD_MODE_SNAKE) { |
| // If both controllers are active, go into game TRON mode |
| if (ctrl_data_p->ctrl_1_active && ctrl_data_p->ctrl_2_active) { |
| board_state_p->cube_mode = BOARD_MODE_TRON; |
| Reset_Board(); |
| } |
| } |
| |
| // Call the callback function if any buttons have changed |
| if (ctrl_data_p->btn_change_callback != NULL) { |
| if (ctrl_1_btn || ctrl_2_btn) { |
| (*ctrl_data_p->btn_change_callback)(ctrl_1_btn, ctrl_2_btn); |
| } |
| } |
| } |
| |
| void Controller_Set_Leds(uint8_t ctrl_1, uint8_t ctrl_2) { |
| ctrl_data_p->ctrl_1_leds = ctrl_1; |
| ctrl_data_p->ctrl_2_leds = ctrl_2; |
| } |