Add BLE driver for NRF52

This commit is contained in:
jacob.eva 2024-01-25 21:35:40 +00:00
parent 6e8865b2ae
commit 80769f1101
No known key found for this signature in database
GPG Key ID: 0B92E083BBCCAA1E
4 changed files with 173 additions and 3 deletions

View File

@ -13,11 +13,24 @@
// You should have received a copy of the GNU General Public License // You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>. // along with this program. If not, see <https://www.gnu.org/licenses/>.
#if MCU_VARIANT == MCU_ESP32
#include "BluetoothSerial.h" #include "BluetoothSerial.h"
#include "esp_bt_main.h" #include "esp_bt_main.h"
#include "esp_bt_device.h" #include "esp_bt_device.h"
#elif MCU_VARIANT == MCU_NRF52
#include <bluefruit.h>
#include <math.h>
#endif
#if MCU_VARIANT == MCU_ESP32
BluetoothSerial SerialBT; BluetoothSerial SerialBT;
#elif MCU_VARIANT == MCU_NRF52
BLEUart SerialBT;
BLEDis bledis;
BLEBas blebas;
#endif
#define BT_PAIRING_TIMEOUT 35000 #define BT_PAIRING_TIMEOUT 35000
uint32_t bt_pairing_started = 0; uint32_t bt_pairing_started = 0;
@ -138,4 +151,145 @@ char bt_devname[11];
} }
} }
#elif MCU_VARIANT == MCU_NRF52
uint8_t eeprom_read(uint32_t mapped_addr);
void bt_stop() {
if (bt_state != BT_STATE_OFF) {
bt_allow_pairing = false;
bt_state = BT_STATE_OFF;
}
}
void bt_disable_pairing() {
bt_allow_pairing = false;
bt_ssp_pin = 0;
bt_state = BT_STATE_ON;
}
void bt_pairing_complete(uint16_t conn_handle, uint8_t auth_status) {
if (auth_status == BLE_GAP_SEC_STATUS_SUCCESS) {
bt_disable_pairing();
} else {
bt_ssp_pin = 0;
}
}
bool bt_passkey_callback(uint16_t conn_handle, uint8_t const passkey[6], bool match_request) {
for (int i = 0; i < 6; i++) {
// multiply by tens however many times needed to make numbers appear in order
bt_ssp_pin += ((int)passkey[i] - 48) * pow(10, 5-i);
}
kiss_indicate_btpin();
if (match_request) {
if (bt_allow_pairing) {
return true;
}
}
return false;
}
void bt_connect_callback(uint16_t conn_handle) {
bt_state = BT_STATE_CONNECTED;
cable_state = CABLE_STATE_DISCONNECTED;
}
void bt_disconnect_callback(uint16_t conn_handle, uint8_t reason) {
bt_state = BT_STATE_ON;
}
bool bt_setup_hw() {
if (!bt_ready) {
#if HAS_EEPROM
if (EEPROM.read(eeprom_addr(ADDR_CONF_BT)) == BT_ENABLE_BYTE) {
#else
if (eeprom_read(eeprom_addr(ADDR_CONF_BT)) == BT_ENABLE_BYTE) {
#endif
bt_enabled = true;
} else {
bt_enabled = false;
}
Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
Bluefruit.autoConnLed(false);
if (Bluefruit.begin()) {
Bluefruit.setTxPower(4); // Check bluefruit.h for supported values
Bluefruit.Security.setIOCaps(true, true, false);
Bluefruit.Security.setPairPasskeyCallback(bt_passkey_callback);
Bluefruit.Periph.setConnectCallback(bt_connect_callback);
Bluefruit.Periph.setDisconnectCallback(bt_disconnect_callback);
Bluefruit.Security.setIOCaps(true, true, false);
Bluefruit.Security.setPairCompleteCallback(bt_pairing_complete);
const ble_gap_addr_t gap_addr = Bluefruit.getAddr();
char *data = (char*)malloc(BT_DEV_ADDR_LEN+1);
for (int i = 0; i < BT_DEV_ADDR_LEN; i++) {
data[i] = gap_addr.addr[i];
}
#if HAS_EEPROM
data[BT_DEV_ADDR_LEN] = EEPROM.read(eeprom_addr(ADDR_SIGNATURE));
#else
data[BT_DEV_ADDR_LEN] = eeprom_read(eeprom_addr(ADDR_SIGNATURE));
#endif
unsigned char *hash = MD5::make_hash(data, BT_DEV_ADDR_LEN);
memcpy(bt_dh, hash, BT_DEV_HASH_LEN);
sprintf(bt_devname, "RNode %02X%02X", bt_dh[14], bt_dh[15]);
free(data);
bt_ready = true;
return true;
} else { return false; }
} else { return false; }
}
void bt_start() {
if (bt_state == BT_STATE_OFF) {
Bluefruit.setName(bt_devname);
bledis.setManufacturer("Adafruit Industries");
bledis.setModel("Bluefruit Feather52");
// start device information service
bledis.begin();
SerialBT.begin();
blebas.begin();
// non-connectable advertising
Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
Bluefruit.Advertising.addTxPower();
// Include bleuart 128-bit uuid
Bluefruit.Advertising.addService(SerialBT);
// There is no room for Name in Advertising packet
// Use Scan response for Name
Bluefruit.ScanResponse.addName();
Bluefruit.Advertising.start(0);
bt_state = BT_STATE_ON;
}
}
bool bt_init() {
bt_state = BT_STATE_OFF;
if (bt_setup_hw()) {
if (bt_enabled && !console_active) bt_start();
return true;
} else {
return false;
}
}
void bt_enable_pairing() {
if (bt_state == BT_STATE_OFF) bt_start();
bt_allow_pairing = true;
bt_pairing_started = millis();
bt_state = BT_STATE_PAIRING;
}
void update_bt() {
if (bt_allow_pairing && millis()-bt_pairing_started >= BT_PAIRING_TIMEOUT) {
bt_disable_pairing();
}
}
#endif #endif

View File

@ -304,7 +304,7 @@
#if BOARD_MODEL == BOARD_RAK4630 #if BOARD_MODEL == BOARD_RAK4630
#define HAS_EEPROM false #define HAS_EEPROM false
#define HAS_DISPLAY false // set for debugging #define HAS_DISPLAY false // set for debugging
#define HAS_BLUETOOTH false #define HAS_BLUETOOTH true
#define HAS_CONSOLE false #define HAS_CONSOLE false
#define HAS_PMU false #define HAS_PMU false
#define HAS_NP false #define HAS_NP false

View File

@ -140,7 +140,7 @@ void setup() {
update_display(); update_display();
#endif #endif
#if MCU_VARIANT == MCU_ESP32 #if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
#if HAS_PMU == true #if HAS_PMU == true
pmu_ready = init_pmu(); pmu_ready = init_pmu();
#endif #endif

View File

@ -1207,9 +1207,17 @@ void eeprom_update(int mapped_addr, uint8_t byte) {
written_bytes = 0; written_bytes = 0;
} }
#endif #endif
} }
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
void eeprom_flush() {
// sync file contents to flash
file.close();
file.open(EEPROM_FILE, FILE_O_WRITE);
written_bytes = 0;
}
#endif
void eeprom_write(uint8_t addr, uint8_t byte) { void eeprom_write(uint8_t addr, uint8_t byte) {
if (!eeprom_info_locked() && addr >= 0 && addr < EEPROM_RESERVED) { if (!eeprom_info_locked() && addr >= 0 && addr < EEPROM_RESERVED) {
eeprom_update(eeprom_addr(addr), byte); eeprom_update(eeprom_addr(addr), byte);
@ -1344,8 +1352,16 @@ bool eeprom_checksum_valid() {
void bt_conf_save(bool is_enabled) { void bt_conf_save(bool is_enabled) {
if (is_enabled) { if (is_enabled) {
eeprom_update(eeprom_addr(ADDR_CONF_BT), BT_ENABLE_BYTE); eeprom_update(eeprom_addr(ADDR_CONF_BT), BT_ENABLE_BYTE);
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
// have to do a flush because we're only writing 1 byte and it syncs after 8
eeprom_flush();
#endif
} else { } else {
eeprom_update(eeprom_addr(ADDR_CONF_BT), 0x00); eeprom_update(eeprom_addr(ADDR_CONF_BT), 0x00);
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
// have to do a flush because we're only writing 1 byte and it syncs after 8
eeprom_flush();
#endif
} }
} }