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feat(bt_rssi): add 0xf9 feature report to get bt rssi

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This commit is contained in:
awalol
2026-05-14 21:50:39 +08:00
parent 58909831e1
commit 908bace5c4
5 changed files with 88 additions and 34 deletions
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src/bt.cpp
+28
View File
@@ -9,6 +9,7 @@
#include <unordered_map>
#include <vector>
#include "btstack_event.h"
#include "gap.h"
#include "l2cap.h"
#include "pico/cyw43_arch.h"
#include "utils.h"
@@ -37,6 +38,7 @@ static uint16_t hid_control_cid;
static uint16_t hid_interrupt_cid;
static bt_data_callback_t bt_data_callback = nullptr;
static bool check_dse = false;
static int8_t bt_rssi = 0;
unordered_map<uint8_t, vector<uint8_t> > feature_data;
queue_t send_fifo;
queue_t priority_send_fifo;
@@ -74,6 +76,15 @@ bool bt_disconnect() {
return true;
}
void bt_get_signal_strength(int8_t *rssi) {
if (acl_handle != HCI_CON_HANDLE_INVALID) {
gap_read_rssi(acl_handle);
}
if (rssi != nullptr) {
*rssi = bt_rssi;
}
}
void bt_l2cap_init() {
l2cap_event_callback_registration.callback = &l2cap_packet_handler;
l2cap_add_event_handler(&l2cap_event_callback_registration);
@@ -198,7 +209,14 @@ static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
case HCI_EVENT_COMMAND_COMPLETE: {
const uint8_t status = hci_event_command_complete_get_return_parameters(packet)[0];
const uint16_t opcode = hci_event_command_complete_get_command_opcode(packet);
if (opcode != HCI_OPCODE_HCI_READ_RSSI) {
printf("[HCI] CmdComplete %s(0x%04X) status=0x%02X\n", opcode_to_str(opcode), opcode, status);
}
if (opcode == HCI_OPCODE_HCI_READ_RSSI) {
if (status != ERROR_CODE_SUCCESS || packet[1] < 7) {
printf("[HCI] RSSI complete failed status=0x%02X param_len=%u\n", status, packet[1]);
}
}
break;
}
@@ -207,6 +225,7 @@ static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
if (status == 0) {
const hci_con_handle_t handle = hci_event_connection_complete_get_connection_handle(packet);
acl_handle = handle;
bt_rssi = 0;
hci_event_connection_complete_get_bd_addr(packet, current_device_addr);
printf("[HCI] ACL connected handle=0x%04X\n", handle);
printf("[HCI] Request authentication on handle=0x%04X\n", handle);
@@ -316,6 +335,7 @@ static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
device_found = false;
new_pair = false;
acl_handle = HCI_CON_HANDLE_INVALID;
bt_rssi = 0;
hid_control_cid = 0;
hid_interrupt_cid = 0;
feature_data.clear();
@@ -324,6 +344,14 @@ static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
gap_inquiry_start(30);
break;
}
case GAP_EVENT_RSSI_MEASUREMENT: {
const hci_con_handle_t handle = gap_event_rssi_measurement_get_con_handle(packet);
if (handle == acl_handle) {
bt_rssi = static_cast<int8_t>(gap_event_rssi_measurement_get_rssi(packet));
}
break;
}
}
}
src/bt.h
+1
View File
@@ -20,6 +20,7 @@ void bt_register_data_callback(bt_data_callback_t callback);
void bt_send_packet(uint8_t *data, uint16_t len);
void bt_send_control(uint8_t *data, uint16_t len);
void bt_write(const uint8_t *data, uint16_t len, bool priority = false);
void bt_get_signal_strength(int8_t *rssi);
std::vector<uint8_t> get_feature_data(uint8_t reportId,uint16_t len);
void init_feature();
void set_feature_data(uint8_t reportId, uint8_t* data,uint16_t len);
src/cmd.cpp
+16 -1
View File
@@ -8,6 +8,7 @@
#include <cstdio>
#include <cstring>
#include "bt.h"
#include "config.h"
#include "device/usbd.h"
#include "pico/time.h"
@@ -15,7 +16,8 @@
bool is_pico_cmd(uint8_t report_id) {
if (report_id == 0xf6 ||
report_id == 0xf7 ||
report_id == 0xf8
report_id == 0xf8 ||
report_id == 0xf9
) {
return true;
}
@@ -38,6 +40,19 @@ uint16_t pico_cmd_get(uint8_t report_id, uint8_t *buffer, uint16_t reqlen) {
memcpy(buffer, PICO_PROGRAM_VERSION_STRING, len);
return len;
}
if (report_id == 0xf9) {
// [-128,0]
int8_t rssi = 0;
bt_get_signal_strength(&rssi);
if (reqlen == 0) {
return 0;
}
buffer[0] = rssi;
#if ENABLE_VERBOSE
printf("[HID] 0xf9 RSSI=%d raw=0x%02X\n", rssi, buffer[0]);
#endif
return 1;
}
return 0;
}
src/usb_descriptors.cpp
+40 -32
View File
@@ -362,8 +362,8 @@ uint8_t descriptor_configuration[] = {
0x00, // bCountryCode: Not localized
0x01, // bNumDescriptors: 1 report descriptor
0x22, // bDescriptorType: Report
0x39, 0x01, // wDescriptorLength: 313 (0x0139) DS
// 0xAD, 0x01, // wDescriptorLength: 429 (0x01AD) DSE
0x41, 0x01, // wDescriptorLength: 321 (0x0141) DS
// 0xB5, 0x01, // wDescriptorLength: 437 (0x01B5) DSE
// Endpoint Descriptor (HID IN: EP4)
0x07, // bLength
@@ -408,9 +408,9 @@ uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
descriptor_configuration[offset - 1] = bInterval;
descriptor_configuration[offset - 8] = bInterval;
if (ds_mode()) {
descriptor_configuration[offset - 16] = 0x39;
descriptor_configuration[offset - 16] = 0x41;
}else {
descriptor_configuration[offset - 16] = 0xAD;
descriptor_configuration[offset - 16] = 0xB5;
}
return descriptor_configuration;
}
@@ -561,22 +561,26 @@ uint8_t const desc_hid_report_ds[] = {
0x09, 0x36, // Usage (0x36)
0x95, 0x03, // Report Count (3)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF6,
0x09, 0x37,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF7,
0x09, 0x38,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF8,
0x09, 0x39,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF6, // Report ID (-10)
0x09, 0x37, // Usage (Vendor 0x37)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF7, // Report ID (-9)
0x09, 0x38, // Usage (Vendor 0x38)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF8, // Report ID (-8)
0x09, 0x39, // Usage (Vendor 0x39)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF9, // Report ID (-7)
0x09, 0x3A, // Usage (Vendor 0x3A)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0xC0, // End Collection
// 313 bytes
// 321 bytes
};
static_assert(sizeof(desc_hid_report_ds) == 0x0139);
static_assert(sizeof(desc_hid_report_ds) == 0x0141);
uint8_t const desc_hid_report_dse[] = {
0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
@@ -778,22 +782,26 @@ uint8_t const desc_hid_report_dse[] = {
0x85, 0x7B, // Report ID (123)
0x09, 0x53, // Usage (0x53)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF6,
0x09, 0x37,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF7,
0x09, 0x38,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF8,
0x09, 0x39,
0x95, 0x3F,
0xB1, 0x02,
0x85, 0xF6, // Report ID (-10)
0x09, 0x37, // Usage (Vendor 0x37)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF7, // Report ID (-9)
0x09, 0x38, // Usage (Vendor 0x38)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF8, // Report ID (-8)
0x09, 0x39, // Usage (Vendor 0x39)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x85, 0xF9, // Report ID (-7)
0x09, 0x3A, // Usage (Vendor 0x3A)
0x95, 0x3F, // Report Count (63)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0xC0, // End Collection
// 429 bytes
// 437 bytes
};
static_assert(sizeof(desc_hid_report_dse) == 0x01AD);
static_assert(sizeof(desc_hid_report_dse) == 0x01B5);
// Invoked when received GET HID REPORT DESCRIPTOR
// Application return pointer to descriptor
src/utils.h
+2
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@@ -83,6 +83,8 @@ inline const char *opcode_to_str(const uint16_t opcode) {
return "HCI_READ_BD_ADDR";
case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE:
return "HCI_READ_ENCRYPTION_KEY_SIZE";
case HCI_OPCODE_HCI_READ_RSSI:
return "HCI_READ_RSSI";
case 0xFC01:
return "HCI_VENDOR_0xFC01";
default: