Diff: HIDController_BLE.cpp

Revision:

6:f1c3ea8bc850

Child:

9:d1daefbf1fbd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HIDController_BLE.cpp	Thu Jul 21 01:25:31 2016 +0900
@@ -0,0 +1,212 @@
+#include "mbed.h"
+#include "BLE.h"
+#include "KeyboardService.h"
+#include "BatteryService.h"
+#include "DeviceInformationService.h"
+#include "HIDController_BLE.h"
+
+static const char MODEL_NAME[] = "keyboard";
+static const char SERIAL_NUMBER[] = "X00000";
+static const char HARDWARE_REVISION[] = "0.1";
+static const char FIRMWARE_REVISION[] = "0.1";
+static const char SOFTWARE_REVISION[] = "0.0";
+
+static const uint8_t DEVICE_NAME[] = "my keyboard";
+static const uint8_t SHORT_DEVICE_NAME[] = "kbd1";
+
+static const bool ENABLE_BONDING = true;
+static const bool REQUIRE_MITM = true;
+static const uint8_t PASSKEY[6] = {'1','2','3','4','5','6'}; // must be 6-digits number
+
+static const uint16_t uuid16_list[] =  {
+	GattService::UUID_HUMAN_INTERFACE_DEVICE_SERVICE,
+	GattService::UUID_DEVICE_INFORMATION_SERVICE,
+	GattService::UUID_BATTERY_SERVICE
+};
+
+static KeyboardService* keyboardService;
+static BatteryService* batteryService;
+static DeviceInformationService* deviceInformationService;
+
+static void updateBatteryLevel() {
+	if (!batteryService) return;
+	static const float BATTERY_MAX = 2.4;
+	static const float REFERNECE = 1.2;
+	static const float PRESCALE = 3;
+
+	NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
+
+	// Use internal 1.2V reference for batteryInput
+	//	1/3 pre-scaled input and 1.2V internal band gap reference
+	// ref. mbed-src/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/analogin_api.c
+	NRF_ADC->CONFIG =
+		(ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
+		// Use VDD 1/3 for input
+		(ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
+		// Use internal band gap for reference
+		(ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
+		(ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
+
+	// Start ADC
+	NRF_ADC->TASKS_START = 1;
+	while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {
+		// busy loop
+	}
+
+	// Read ADC result
+	uint16_t raw10bit = static_cast<uint16_t>(NRF_ADC->RESULT);
+	float ratio = raw10bit / static_cast<float>(1<<10);
+
+	float batteryVoltage = ratio * (REFERNECE * PRESCALE);
+	float percentage = (batteryVoltage / BATTERY_MAX) * 100;
+	if (percentage > 100) {
+		percentage = 100;
+	}
+	printf("updateBatteryLevel %f V : %d/100\r\n", batteryVoltage, static_cast<uint8_t>(percentage));
+	batteryService->updateBatteryLevel(static_cast<uint8_t>(percentage));
+}
+
+
+static void onConnect(const Gap::ConnectionCallbackParams_t *params) {
+	printf("onConnect\r\n");
+}
+
+static void onDisconnect(const Gap::DisconnectionCallbackParams_t *params) {
+	printf("onDisconnect\r\n");
+	BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
+}
+
+static void onTimeout(const Gap::TimeoutSource_t source) {
+	printf("onTimeout\r\n");
+	BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
+}
+
+static void passkeyDisplayCallback(Gap::Handle_t handle, const SecurityManager::Passkey_t passkey) {
+	printf("Input passKey: ");
+	for (unsigned i = 0; i < Gap::ADDR_LEN; i++) {
+		printf("%c", passkey[i]);
+	}
+	printf("\r\n");
+}
+
+static void securitySetupCompletedCallback(Gap::Handle_t handle, SecurityManager::SecurityCompletionStatus_t status) {
+	if (status == SecurityManager::SEC_STATUS_SUCCESS) {
+		printf("Security success %d\r\n", status);
+	} else {
+		printf("Security failed %d\r\n", status);
+	}
+}
+
+static void securitySetupInitiatedCallback(Gap::Handle_t, bool allowBonding, bool requireMITM, SecurityManager::SecurityIOCapabilities_t iocaps) {
+	printf("Security setup initiated\r\n");
+}
+
+static void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) {
+	// https://developer.mbed.org/compiler/#nav:/keyboard/BLE_API/ble/blecommon.h;
+	ble_error_t error;
+	BLE &ble          = params->ble;
+	
+	error = params->error;
+	if (error != BLE_ERROR_NONE) {
+		printf("error on ble.init() \r\n");
+		goto return_error;
+	}
+
+	ble.gap().onDisconnection(onDisconnect);
+	ble.gap().onConnection(onConnect);
+	ble.gap().onTimeout(onTimeout);
+
+	printf("setup ble security manager\r\n");
+	ble.securityManager().onSecuritySetupInitiated(securitySetupInitiatedCallback);
+	ble.securityManager().onPasskeyDisplay(passkeyDisplayCallback);
+	ble.securityManager().onSecuritySetupCompleted(securitySetupCompletedCallback);
+	// bonding with hard-coded passkey.
+	error = ble.securityManager().init(ENABLE_BONDING, REQUIRE_MITM, SecurityManager::IO_CAPS_DISPLAY_ONLY, PASSKEY);
+	if (error != BLE_ERROR_NONE) {
+		printf("error on ble.securityManager().init()");
+		goto return_error;
+	}
+
+	keyboardService = new KeyboardService(ble);
+	deviceInformationService = new DeviceInformationService(ble, "lowreal.net", MODEL_NAME, SERIAL_NUMBER, HARDWARE_REVISION, FIRMWARE_REVISION, SOFTWARE_REVISION);
+	batteryService = new BatteryService(ble, 100);
+	updateBatteryLevel();
+
+	printf("general setup\r\n");
+	error = ble.gap().accumulateAdvertisingPayload(
+		GapAdvertisingData::BREDR_NOT_SUPPORTED |
+		GapAdvertisingData::LE_GENERAL_DISCOVERABLE
+	);
+	if (error != BLE_ERROR_NONE) goto return_error;
+
+	printf("set COMPLETE_LIST_16BIT_SERVICE_IDS\r\n");
+	error = ble.gap().accumulateAdvertisingPayload(
+		GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,
+		(uint8_t*)uuid16_list, sizeof(uuid16_list)
+	);
+	if (error != BLE_ERROR_NONE) goto return_error;
+
+	printf("set advertising\r\n");
+	// see 5.1.2: HID over GATT Specification (pg. 25)
+	ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+
+	printf("set advertising interval\r\n");
+	ble.gap().setAdvertisingInterval(50);
+	// XXX
+	// ble.gap().setAdvertisingTimeout(0);
+
+	printf("set keyboard\r\n");
+	error = ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::KEYBOARD);
+	if (error != BLE_ERROR_NONE) goto return_error;
+
+	printf("set complete local name\r\n");
+	error = ble.gap().accumulateAdvertisingPayload(
+		GapAdvertisingData::COMPLETE_LOCAL_NAME,
+		DEVICE_NAME, sizeof(DEVICE_NAME)
+	);
+	if (error != BLE_ERROR_NONE) goto return_error;
+
+	printf("set device name\r\n");
+	error = ble.gap().setDeviceName(DEVICE_NAME);
+	if (error != BLE_ERROR_NONE) goto return_error;
+	// ble.gap().setTxPower(-12);
+
+
+	printf("advertising\r\n");
+	error = ble.gap().startAdvertising();
+	if (error != BLE_ERROR_NONE) goto return_error;
+	return;
+
+return_error:
+	printf("error with %d\r\n", error);
+	return;
+}
+
+void HIDController::init() {
+	// https://github.com/jpbrucker/BLE_HID/blob/master/examples/examples_common.cpp
+	printf("ble.init\r\n");
+
+	BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
+	ble.init(bleInitComplete);
+
+	while (!ble.hasInitialized()) { }
+
+	printf("ble.hasIntialized\r\n");
+}
+
+void HIDController::process() {
+	BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
+	ble.waitForEvent();
+}
+
+void HIDController::appendReportData(uint8_t key) {
+	if (keyboardService) {
+		keyboardService->appendReportData(key);
+	}
+}
+
+void HIDController::deleteReportData(uint8_t key) {
+	if (keyboardService) {
+		keyboardService->deleteReportData(key);
+	}
+}