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example/hid_keyboard_demo: connect to fixed remote device on first keypress

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This commit is contained in:
Matthias Ringwald 2018-07-23 12:53:41 +02:00
parent 57c643ee41
commit 4e43ca9f2a
1 changed files with 58 additions and 11 deletions
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69
example/hid_keyboard_demo.c
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@ -64,12 +64,6 @@
// to enable demo text on POSIX systems
// #undef HAVE_BTSTACK_STDIN
static uint8_t hid_service_buffer[250];
static uint8_t device_id_sdp_service_buffer[100];
static const char hid_device_name[] = "BTstack HID Keyboard";
static btstack_packet_callback_registration_t hci_event_callback_registration;
static uint16_t hid_cid;
// from USB HID Specification 1.1, Appendix B.1
const uint8_t hid_descriptor_keyboard_boot_mode[] = {
@ -171,6 +165,27 @@ static const uint8_t keytable_us_shift[] = {
'6', '7', '8', '9', '0', '.', 0xb1, /* 97-100 */
};
// STATE
static uint8_t hid_service_buffer[250];
static uint8_t device_id_sdp_service_buffer[100];
static const char hid_device_name[] = "BTstack HID Keyboard";
static btstack_packet_callback_registration_t hci_event_callback_registration;
static uint16_t hid_cid;
static bd_addr_t device_addr;
#ifdef HAVE_BTSTACK_STDIN
static const char * device_addr_string = "BC:EC:5D:E6:15:03";
#endif
static enum {
APP_BOOTING,
APP_NOT_CONNECTED,
APP_CONNECTING,
APP_CONNECTED
} app_state = APP_BOOTING;
// HID Keyboard lookup
static int lookup_keycode(uint8_t character, const uint8_t * table, int size, uint8_t * keycode){
int i;
@ -221,10 +236,26 @@ static void send_report(int modifier, int keycode){
static void stdin_process(char character){
uint8_t modifier;
uint8_t keycode;
int found = keycode_and_modifer_us_for_character(character, &keycode, &modifier);
if (found){
send_key(modifier, keycode);
return;
int found;
switch (app_state){
case APP_BOOTING:
case APP_CONNECTING:
// ignore
break;
case APP_CONNECTED:
// send keyu
found = keycode_and_modifer_us_for_character(character, &keycode, &modifier);
if (found){
send_key(modifier, keycode);
return;
}
break;
case APP_NOT_CONNECTED:
printf("Connecting to %s...\n", bd_addr_to_str(device_addr));
hid_device_connect(device_addr, &hid_cid);
break;
}
}
#else
@ -274,9 +305,15 @@ static void hid_embedded_start_typing(void){
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 (packet[0]){
case BTSTACK_EVENT_STATE:
if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) return;
app_state = APP_NOT_CONNECTED;
break;
case HCI_EVENT_USER_CONFIRMATION_REQUEST:
// ssp: inform about user confirmation request
log_info("SSP User Confirmation Request with numeric value '%06"PRIu32"'\n", hci_event_user_confirmation_request_get_numeric_value(packet));
@ -286,7 +323,15 @@ static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * pack
case HCI_EVENT_HID_META:
switch (hci_event_hid_meta_get_subevent_code(packet)){
case HID_SUBEVENT_CONNECTION_OPENED:
if (hid_subevent_connection_opened_get_status(packet)) return;
status = hid_subevent_connection_opened_get_status(packet);
if (status) {
// outgoing connection failed
printf("Connection failed, status 0x%x\n", status);
app_state = APP_NOT_CONNECTED;
hid_cid = 0;
return;
}
app_state = APP_CONNECTED;
hid_cid = hid_subevent_connection_opened_get_hid_cid(packet);
#ifdef HAVE_BTSTACK_STDIN
printf("HID Connected, please start typing...\n");
@ -297,6 +342,7 @@ static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * pack
break;
case HID_SUBEVENT_CONNECTION_CLOSED:
printf("HID Disconnected\n");
app_state = APP_NOT_CONNECTED;
hid_cid = 0;
break;
case HID_SUBEVENT_CAN_SEND_NOW:
@ -368,6 +414,7 @@ int btstack_main(int argc, const char * argv[]){
hid_device_register_packet_handler(&packet_handler);
#ifdef HAVE_BTSTACK_STDIN
sscanf_bd_addr(device_addr_string, device_addr);
btstack_stdin_setup(stdin_process);
#endif
// turn on!