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#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "btstack.h"
#include "gamepad.h"
#include "hardware/gpio.h"
#include "classic/rfcomm.h"
#define BUTTON_PIN 13
static const char hid_device_name[] = "Wirecutter Adapter";
static const char service_name[] = "Wireless Gamepad";
static uint8_t hid_service_buffer[4090];
static uint8_t device_id_sdp_service_buffer[100];
static uint8_t device_id_sdp_service_record_handle = 0;
static btstack_packet_callback_registration_t hci_event_callback_registration;
uint16_t hid_cid;
const uint16_t host_max_latency = 1600;
const uint16_t host_min_timeout = 3200;
const uint8_t hid_descriptor_gamepad[] = {
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x05, // USAGE (Joystick - 0x04; Gamepad - 0x05; Multi-axis Controller - 0x08)
0xa1, 0x01, // COLLECTION (Application)
// Buttons
0x85, 0x03, // REPORT_ID (Default: 3)
0x05, 0x09, // USAGE_PAGE (Button)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
0x29, 0x10, // USAGE_MAXIMUM (Up to 128 buttons possible)
0x95, 0x10, // REPORT_COUNT (# of buttons)
0x81, 0x02, // INPUT (Data,Var,Abs)
// Axis
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x01, // USAGE (Pointer)
0x16, 0x01, 0x80, // LOGICAL_MINIMUM (-32767)
0x26, 0xFF, 0x7F, // LOGICAL_MAXIMUM (+32767)
0x75, 0x10, // REPORT_SIZE (16)
0x95, 0x04, // REPORT_COUNT (configuration.getAxisCount())
0xA1, 0x00, // COLLECTION (Physical)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x09, 0x32, // USAGE (Z)
0x09, 0x35, // USAGE (Rz)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION (Physical)
// Simulation
0x05, 0x02, // USAGE_PAGE (Simulation Controls)
0x16, 0x00, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xFF, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x02, // REPORT_COUNT (2)
0xA1, 0x00, // COLLECTION (Physical)
0x09, 0xC4, // USAGE (Accelerator)
0x09, 0xC5, // USAGE (Brake)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION (Physical)
// HAT
0xA1, 0x00, // COLLECTION (Physical)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x39, // USAGE (Hat Switch)
0x15, 0x01, // Logical Min (1)
0x25, 0x08, // Logical Max (8)
0x35, 0x00, // Physical Min (0)
0x46, 0x3B, 0x01, // Physical Max (315)
0x65, 0x12, // Unit (SI Rot : Ang Pos)
0x75, 0x08, // Report Size (8)
0x95, 1, // Report Count (4)
0x81, 0x42, // Input (Data, Variable, Absolute)
0xc0, // END_COLLECTION (Physical)
0xc0, // END_COLLECTION (Physical)
};
gamepad_t gamepad;
void request_can_send_now_event(void)
{
hid_device_request_can_send_now_event(hid_cid);
}
static void send_report_joystick(){
uint8_t report[] = {
0xa1, 0x03,
(gamepad.buttons), (gamepad.buttons >> 8),
(gamepad.x), (gamepad.x >> 8),
(gamepad.y), (gamepad.y >> 8),
(gamepad.z), (gamepad.z >> 8),
(gamepad.rz), (gamepad.rz >> 8),
gamepad.gas, gamepad.brake,
gamepad.hat,
};
hid_device_send_interrupt_message(hid_cid, &report[0], sizeof(report));
}
static bd_addr_t local_addr;
static bd_addr_t event_addr;
static uint16_t rfcomm_channel_id;
static uint8_t rfcomm_channel_nr;
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * packet, uint16_t packet_size){
UNUSED(channel);
UNUSED(packet_size);
uint8_t status;
switch(packet_type)
{
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet))
{
case BTSTACK_EVENT_STATE:
if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) return;
gap_local_bd_addr(local_addr);
printf("BTstack up and running on %s.\n", bd_addr_to_str(local_addr));
break;
case GAP_EVENT_DEDICATED_BONDING_COMPLETED:
printf("GAP Dedicated Bonding Complete, status 0x%02x\n", packet[2]);
break;
case HCI_EVENT_PIN_CODE_REQUEST:
printf("Pin code request - using '0000'\n");
hci_event_pin_code_request_get_bd_addr(packet, event_addr);
gap_pin_code_response(event_addr, "0000");
break;
case HCI_EVENT_USER_CONFIRMATION_REQUEST:
// ssp: inform about user confirmation request
printf("SSP User Confirmation Request with numeric value '%06"PRIu32"'\n", hci_event_user_confirmation_request_get_numeric_value(packet));
printf("SSP User Confirmation Auto accept\n");
break;
case RFCOMM_EVENT_INCOMING_CONNECTION:
rfcomm_event_incoming_connection_get_bd_addr(packet, event_addr);
rfcomm_channel_nr = rfcomm_event_incoming_connection_get_server_channel(packet);
rfcomm_channel_id = rfcomm_event_incoming_connection_get_rfcomm_cid(packet);
printf("RFCOMM channel %u requested for %s\n", rfcomm_channel_nr, bd_addr_to_str(event_addr));
rfcomm_decline_connection(rfcomm_channel_id);
break;
case HCI_EVENT_HID_META:
switch (hci_event_hid_meta_get_subevent_code(packet)){
case HID_SUBEVENT_CONNECTION_OPENED:
status = hid_subevent_connection_opened_get_status(packet);
if (status != ERROR_CODE_SUCCESS) {
// outgoing connection failed
printf("Connection failed, status 0x%x\n", status);
hid_cid = 0;
return;
}
hid_cid = hid_subevent_connection_opened_get_hid_cid(packet);
printf("HID Connected\n");
hid_device_request_can_send_now_event(hid_cid);
gap_discoverable_control(0);
break;
case HID_SUBEVENT_CONNECTION_CLOSED:
printf("HID Disconnected\n");
hid_cid = 0;
break;
case HID_SUBEVENT_CAN_SEND_NOW:
if(hid_cid!=0){ //Solves crash when disconnecting gamepad on android
send_report_joystick();
hid_device_request_can_send_now_event(hid_cid);
}
break;
default:
break;
}
break;
default:
break;
}
break;
default:
break;
}
}
static void sync_irq_handler(void)
{
if (gpio_get_irq_event_mask(BUTTON_PIN) & GPIO_IRQ_EDGE_FALL)
{
gpio_acknowledge_irq(BUTTON_PIN, GPIO_IRQ_EDGE_FALL);
hid_device_disconnect(hid_cid);
gap_discoverable_control(1);
printf("Set discoverable\n");
}
}
static void setup_sync_button(void)
{
gpio_init(BUTTON_PIN);
gpio_set_dir(BUTTON_PIN, GPIO_IN);
gpio_pull_up(BUTTON_PIN);
gpio_set_irq_enabled(BUTTON_PIN, GPIO_IRQ_EDGE_FALL, true);
gpio_add_raw_irq_handler(BUTTON_PIN, &sync_irq_handler);
irq_set_enabled(IO_IRQ_BANK0, true);
}
void change_device_id(uint16_t vendor_id, uint16_t product_id)
{
if (0 == device_id_sdp_service_record_handle)
device_id_sdp_service_record_handle = sdp_create_service_record_handle();
else
sdp_unregister_service(device_id_sdp_service_record_handle);
device_id_create_sdp_record(
device_id_sdp_service_buffer,
device_id_sdp_service_record_handle,
DEVICE_ID_VENDOR_ID_SOURCE_USB,
vendor_id, product_id,
1
);
btstack_assert(de_get_len(device_id_sdp_service_buffer) <= sizeof(device_id_sdp_service_buffer));
sdp_register_service(device_id_sdp_service_buffer);
}
int btstack_main(int argc, const char * argv[]);
int btstack_main(int argc, const char * argv[]){
(void)argc;
(void)argv;
gap_discoverable_control(0);
gap_set_class_of_device(0x2508);
gap_set_local_name(hid_device_name);
#ifdef ENABLE_BLE
gap_set_connection_parameters(0x0060, 0x0030, 0x06, 0x06, 0, 0x0048, 2, 0x0030);
#endif
// L2CAP
l2cap_init();
// SDP Server
sdp_init();
memset(hid_service_buffer, 0, sizeof(hid_service_buffer));
uint8_t hid_virtual_cable = 0;
uint8_t hid_remote_wake = 1;
uint8_t hid_reconnect_initiate = 1;
uint8_t hid_normally_connectable = 1;
hid_sdp_record_t hid_params = {
0x2508,
0,
0,
1, // remote wake
0,
1, // normally connectable
0, // boot device
host_max_latency, host_min_timeout,
3200,
hid_descriptor_gamepad,
sizeof(hid_descriptor_gamepad),
hid_device_name
};
hid_create_sdp_record(
hid_service_buffer,
0x10000,
&hid_params
);
hid_create_sdp_record(hid_service_buffer, sdp_create_service_record_handle(), &hid_params);
btstack_assert(de_get_len(hid_service_buffer) <= sizeof(hid_service_buffer));
sdp_register_service(hid_service_buffer);
// HID Device
hid_device_init(0, sizeof(hid_descriptor_gamepad), hid_descriptor_gamepad);
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
hid_device_register_packet_handler(&packet_handler);
// turn on!
hci_power_control(HCI_POWER_ON);
setup_sync_button();
return 0;
}
/* LISTING_END */
/* EXAMPLE_END */
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