diff --git a/applications/applications.h b/applications/applications.h
index 7de48699f..9ff172a84 100644
--- a/applications/applications.h
+++ b/applications/applications.h
@@ -35,6 +35,10 @@ const FlipperStartupApp FLIPPER_STARTUP[] = {
     {.app = display_u8g2, .name = "display_u8g2", .libs = {0}},
 #endif
 
+#ifdef APP_EXAMPLE_BLINK
+    {.app = application_blink, .name = "blink", .libs = {0}},
+#endif
+
 #ifdef APP_INPUT
     {.app = input_task, .name = "input_task", .libs = {0}},
 #endif
@@ -61,8 +65,6 @@ const FlipperStartupApp FLIPPER_STARTUP[] = {
     {.app = nfc_task, .name = "nfc_task", .libs = {1, FURI_LIB{"menu_task"}}},
 #endif
 
-// {.app = coreglitch_demo_0, .name = "coreglitch_demo_0", .libs = ""},
-
 #ifdef APP_TEST
     {.app = flipper_test_app, .name = "test app", .libs = {0}},
 #endif
@@ -83,6 +85,10 @@ const FlipperStartupApp FLIPPER_STARTUP[] = {
 #ifdef APP_EXAMPLE_DISPLAY
     {.app = u8g2_example, .name = "u8g2_example", .libs = {1, FURI_LIB{"display_u8g2"}}},
 #endif
+
+#ifdef APP_SPEAKER_DEMO
+    {.app = coreglitch_demo_0, .name = "coreglitch_demo_0", .libs = ""},
+#endif
 };
 
 const FlipperStartupApp FLIPPER_APPS[] = {
@@ -101,7 +107,12 @@ const FlipperStartupApp FLIPPER_APPS[] = {
 #ifdef BUILD_CC1101
     {.app = cc1101_workaround, .name = "cc1101 workaround", .libs = {1, FURI_LIB{"gui_task"}}},
 #endif
+
 #ifdef BUILD_IRDA
     {.app = irda, .name = "irda", .libs = {1, FURI_LIB{"gui_task"}}},
 #endif
+
+#ifdef BUILD_SPEAKER_DEMO
+    {.app = coreglitch_demo_0, .name = "coreglitch_demo_0", .libs = {0}},
+#endif
 };
\ No newline at end of file
diff --git a/applications/applications.mk b/applications/applications.mk
index 6dc0baf95..f527dd890 100644
--- a/applications/applications.mk
+++ b/applications/applications.mk
@@ -15,6 +15,7 @@ BUILD_EXAMPLE_BLINK = 1
 BUILD_EXAMPLE_UART_WRITE = 1
 BUILD_EXAMPLE_INPUT_DUMP = 1
 BUILD_CC1101 = 1
+BUILD_SPEAKER_DEMO = 1
 endif
 
 APP_NFC ?= 0
@@ -143,7 +144,7 @@ APP_INPUT = 1
 APP_GUI = 1
 endif
 
-APP_IRDA?= 0
+APP_IRDA ?= 0
 ifeq ($(APP_IRDA), 1)
 CFLAGS		+= -DAPP_IRDA
 BUILD_IRDA = 1
@@ -156,6 +157,19 @@ APP_INPUT = 1
 APP_GUI = 1
 endif
 
+APP_SPEAKER_DEMO ?= 0
+ifeq ($(APP_SPEAKER_DEMO), 1)
+CFLAGS		+= -DAPP_SPEAKER_DEMO
+BUILD_SPEAKER_DEMO = 1
+endif
+BUILD_SPEAKER_DEMO ?= 0
+ifeq ($(BUILD_SPEAKER_DEMO), 1)
+CFLAGS		+= -DBUILD_SPEAKER_DEMO
+C_SOURCES	+= $(wildcard $(APP_DIR)/coreglitch_demo_0/*.c)
+APP_INPUT = 1
+APP_GUI = 1
+endif
+
 # device drivers
 
 APP_GUI	?= 0
diff --git a/applications/cc1101-workaround/cc1101-workaround.cpp b/applications/cc1101-workaround/cc1101-workaround.cpp
index 3f09a8163..ecac480a2 100644
--- a/applications/cc1101-workaround/cc1101-workaround.cpp
+++ b/applications/cc1101-workaround/cc1101-workaround.cpp
@@ -232,7 +232,11 @@ extern "C" void cc1101_workaround(void* p) {
     gui->add_widget(gui, widget, WidgetLayerFullscreen);
 
     printf("[cc1101] creating device\n");
-    CC1101 cc1101(GpioPin{CC1101_CS_GPIO_Port, CC1101_CS_Pin});
+    GpioPin cs_pin = {CC1101_CS_GPIO_Port, CC1101_CS_Pin};
+
+    // TODO open record
+    GpioPin* cs_pin_record = &cs_pin;
+    CC1101 cc1101(cs_pin_record);
     printf("[cc1101] init device\n");
 
     uint8_t address = cc1101.Init();
@@ -254,9 +258,11 @@ extern "C" void cc1101_workaround(void* p) {
 
     // create pin
     GpioPin led = {GPIOA, GPIO_PIN_8};
+    // TODO open record
+    GpioPin* led_record = &led;
 
     // configure pin
-    pinMode(led, GpioModeOpenDrain);
+    pinMode(led_record, GpioModeOutputOpenDrain);
 
     const int16_t RSSI_THRESHOLD = -89;
 
@@ -322,7 +328,8 @@ extern "C" void cc1101_workaround(void* p) {
         }
 
         digitalWrite(
-            led, (state->last_rssi > RSSI_THRESHOLD && !state->need_cc1101_conf) ? LOW : HIGH);
+            led_record,
+            (state->last_rssi > RSSI_THRESHOLD && !state->need_cc1101_conf) ? LOW : HIGH);
 
         release_mutex(&state_mutex, state);
         widget_update(widget);
diff --git a/applications/cc1101-workaround/cc1101.cpp b/applications/cc1101-workaround/cc1101.cpp
index 001cba605..279e1256e 100644
--- a/applications/cc1101-workaround/cc1101.cpp
+++ b/applications/cc1101-workaround/cc1101.cpp
@@ -12,13 +12,17 @@
 /******************************************************************************/
 GpioPin ss_pin;
 
-CC1101::CC1101(GpioPin ss_pin) {
+CC1101::CC1101(GpioPin* ss_pin) {
     /*
     pinMode(gdo0_pin, OUTPUT); //GDO0 as asynchronous serial mode input
     pinMode(gdo2_pin, INPUT); //GDO2 as asynchronous serial mode output
     */
     pinMode(ss_pin, OUTPUT);
     this->ss_pin = ss_pin;
+
+    // TODO open record
+    this->miso_pin = MISO_PIN;
+    this->miso_pin_record = &this->miso_pin;
 }
 //******************************************************************************
 //SpiInit
@@ -108,7 +112,7 @@ byte CC1101::SpiTransfer(byte value) {
 ****************************************************************/
 void CC1101::SpiWriteReg(byte addr, byte value) {
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(addr);
     SpiTransfer(value);
@@ -126,7 +130,7 @@ void CC1101::SpiWriteBurstReg(byte addr, byte* buffer, byte num) {
 
     temp = addr | WRITE_BURST;
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(temp);
     for(i = 0; i < num; i++) {
@@ -143,7 +147,7 @@ void CC1101::SpiWriteBurstReg(byte addr, byte* buffer, byte num) {
 ****************************************************************/
 void CC1101::SpiStrobe(byte strobe) {
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(strobe);
     digitalWrite(ss_pin, HIGH);
@@ -160,7 +164,7 @@ byte CC1101::SpiReadReg(byte addr) {
 
     temp = addr | READ_SINGLE;
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(temp);
     value = SpiTransfer(0);
@@ -180,7 +184,7 @@ void CC1101::SpiReadBurstReg(byte addr, byte* buffer, byte num) {
 
     temp = addr | READ_BURST;
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(temp);
     for(i = 0; i < num; i++) {
@@ -200,7 +204,7 @@ byte CC1101::SpiReadStatus(byte addr) {
 
     temp = addr | READ_BURST;
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(temp);
     value = SpiTransfer(0);
@@ -221,10 +225,10 @@ void CC1101::Reset(void) {
     digitalWrite(ss_pin, HIGH);
     delay(1);
     digitalWrite(ss_pin, LOW);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     SpiTransfer(CC1101_SRES);
-    while(digitalRead(MISO_PIN))
+    while(digitalRead(this->miso_pin_record))
         ;
     digitalWrite(ss_pin, HIGH);
 }
diff --git a/applications/cc1101-workaround/cc1101.h b/applications/cc1101-workaround/cc1101.h
index a4c019967..862e45256 100644
--- a/applications/cc1101-workaround/cc1101.h
+++ b/applications/cc1101-workaround/cc1101.h
@@ -136,9 +136,11 @@
 //******************************** class **************************************//
 class CC1101 {
 private:
-    GpioPin ss_pin;
-    GpioPin gdo0_pin;
-    GpioPin gdo2_pin;
+    GpioPin* ss_pin;
+    GpioPin miso_pin;
+    GpioPin* miso_pin_record;
+    GpioPin* gdo0_pin;
+    GpioPin* gdo2_pin;
 
 private:
     void SpiMode(byte config);
@@ -150,7 +152,7 @@ private:
     void RegConfigSettings(void);
 
 public:
-    CC1101(GpioPin ss_pin);
+    CC1101(GpioPin* ss_pin);
 
     void SpiWriteReg(byte addr, byte value);
     void SpiInit(void);
diff --git a/applications/coreglitch_demo_0/coreglitch_demo_0.c b/applications/coreglitch_demo_0/coreglitch_demo_0.c
index bc4b67b7d..d5f049007 100644
--- a/applications/coreglitch_demo_0/coreglitch_demo_0.c
+++ b/applications/coreglitch_demo_0/coreglitch_demo_0.c
@@ -8,15 +8,6 @@ void coreglitch_demo_0(void* p) {
 
     fuprintf(log, "coreglitch demo!\n");
 
-    // open record
-    FuriRecordSubscriber* fb_record =
-        furi_open_deprecated("u8g2_fb", false, false, NULL, NULL, NULL);
-
-    if(fb_record == NULL) {
-        fuprintf(log, "[widget] cannot create fb record\n");
-        furiac_exit(NULL);
-    }
-
     float notes[] = {
         0.0,
         330.0,
@@ -49,25 +40,11 @@ void coreglitch_demo_0(void* p) {
             }
 
             // TODO get sound from FURI
-            pwm_set(width, freq, &htim5, TIM_CHANNEL_4);
+            hal_pwm_set(width, freq, &htim5, TIM_CHANNEL_4);
             // delay(1);
 
             cnt++;
 
-            u8g2_t* fb = furi_take(fb_record);
-            if(fb != NULL) {
-                u8g2_SetDrawColor(fb, 0);
-                u8g2_DrawBox(fb, 0, 0, 120, 30);
-
-                u8g2_SetFont(fb, u8g2_font_6x10_mf);
-                u8g2_SetDrawColor(fb, 1);
-                u8g2_SetFontMode(fb, 1);
-                char buf[64];
-                sprintf(buf, "freq: %d Hz", (uint32_t)freq);
-                u8g2_DrawStr(fb, 2 + width * 20, 12 + freq / 100, buf);
-            }
-            furi_commit(fb_record);
-
             delay(100);
         }
     }
diff --git a/applications/examples/blink.c b/applications/examples/blink.c
index d6d23bf2b..195a13cf8 100644
--- a/applications/examples/blink.c
+++ b/applications/examples/blink.c
@@ -1,16 +1,20 @@
 #include "flipper.h"
+#include "flipper_v2.h"
 
 void application_blink(void* p) {
     // create pin
     GpioPin led = {.pin = GPIO_PIN_8, .port = GPIOA};
 
+    // TODO open record
+    GpioPin* led_record = &led;
+
     // configure pin
-    pinMode(led, GpioModeOpenDrain);
+    pinMode(led_record, GpioModeOutputOpenDrain);
 
     while(1) {
-        digitalWrite(led, HIGH);
+        digitalWrite(led_record, HIGH);
         delay(500);
-        digitalWrite(led, LOW);
+        digitalWrite(led_record, LOW);
         delay(500);
     }
 }
\ No newline at end of file
diff --git a/applications/examples/uart_write.c b/applications/examples/uart_write.c
index 1025eeaaa..95d6ec497 100644
--- a/applications/examples/uart_write.c
+++ b/applications/examples/uart_write.c
@@ -1,11 +1,15 @@
 #include "flipper.h"
 #include <string.h>
 #include "log.h"
+#include "flipper_v2.h"
 
 void application_uart_write(void* p) {
     // Red led for showing progress
     GpioPin led = {.pin = GPIO_PIN_8, .port = GPIOA};
-    pinMode(led, GpioModeOpenDrain);
+    // TODO open record
+    GpioPin* led_record = &led;
+
+    pinMode(led_record, GpioModeOutputOpenDrain);
 
     // get_default_log open "tty" record
     FuriRecordSubscriber* log = get_default_log();
@@ -23,9 +27,9 @@ void application_uart_write(void* p) {
         counter++;
 
         // flash at every send
-        digitalWrite(led, LOW);
+        digitalWrite(led_record, LOW);
         delay(50);
-        digitalWrite(led, HIGH);
+        digitalWrite(led_record, HIGH);
 
         // delay with overall perion of 1s
         delay(950);
diff --git a/applications/input/input.c b/applications/input/input.c
index 814cb2fbe..eec75eb11 100644
--- a/applications/input/input.c
+++ b/applications/input/input.c
@@ -56,7 +56,7 @@ void input_task(void* p) {
     for(;;) {
         bool changed = false;
         for(uint32_t i = 0; i < INPUT_COUNT; i++) {
-            bool input_state = app_gpio_read(input_gpio[i]) ^ input_invert[i];
+            bool input_state = gpio_read(&input_gpio[i]) ^ input_invert[i];
             if(input_state) {
                 if(debounce_counters[i] < DEBOUNCE_TICKS) {
                     debounce_counters[i] += 1;
diff --git a/applications/irda/irda.c b/applications/irda/irda.c
index 9aa5a3d11..1c3d745b5 100644
--- a/applications/irda/irda.c
+++ b/applications/irda/irda.c
@@ -90,13 +90,13 @@ void render_nec(CanvasApi* canvas, State* state) {
 void input_carrier(Event* event, State* state) {
     if(event->value.input.input == InputOk) {
         if(event->value.input.state) {
-            pwm_set(
+            hal_pwm_set(
                 duty_cycles[state->carrier_duty_cycle_id],
                 state->carrier_freq,
                 &htim2,
                 TIM_CHANNEL_4);
         } else {
-            pwm_stop(&htim2, TIM_CHANNEL_4);
+            hal_pwm_stop(&htim2, TIM_CHANNEL_4);
         }
     }
 
diff --git a/applications/irda/irda_nec.c b/applications/irda/irda_nec.c
index 683fbb8f2..be5252d74 100644
--- a/applications/irda/irda_nec.c
+++ b/applications/irda/irda_nec.c
@@ -4,18 +4,18 @@
 
 void ir_nec_preambula(void) {
     // 9ms carrier + 4.5ms pause
-    pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY, &htim2, TIM_CHANNEL_4);
+    hal_pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY, &htim2, TIM_CHANNEL_4);
     delay_us(9000);
-    pwm_stop(&htim2, TIM_CHANNEL_4);
+    hal_pwm_stop(&htim2, TIM_CHANNEL_4);
     delay_us(4500);
 }
 
 void ir_nec_send_bit(bool bit) {
     // 0 is 562.5us carrier + 1687.5us pause
     // 1 is 562.5us carrier + 562.5us pause
-    pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY, &htim2, TIM_CHANNEL_4);
+    hal_pwm_set(NEC_DUTY_CYCLE, NEC_CARRIER_FREQUENCY, &htim2, TIM_CHANNEL_4);
     delay_us(562.5);
-    pwm_stop(&htim2, TIM_CHANNEL_4);
+    hal_pwm_stop(&htim2, TIM_CHANNEL_4);
     if(bit) {
         delay_us(562.5);
     } else {
diff --git a/applications/template/template.c b/applications/template/template.c.example
similarity index 100%
rename from applications/template/template.c
rename to applications/template/template.c.example
diff --git a/applications/tests/test_index.c b/applications/tests/test_index.c
index c15985cea..fc459336b 100644
--- a/applications/tests/test_index.c
+++ b/applications/tests/test_index.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include "flipper.h"
+#include "flipper_v2.h"
 #include "log.h"
 
 // #include "flipper-core.h" TODO: Rust build disabled
@@ -12,27 +13,31 @@ void flipper_test_app(void* p) {
     GpioPin green = {.pin = LED_GREEN_Pin, .port = LED_GREEN_GPIO_Port};
     GpioPin blue = {.pin = LED_BLUE_Pin, .port = LED_BLUE_GPIO_Port};
 
-    // configure pins
-    pinMode(red, GpioModeOpenDrain);
-    pinMode(green, GpioModeOpenDrain);
-    pinMode(blue, GpioModeOpenDrain);
+    GpioPin* red_record = &red;
+    GpioPin* green_record = &green;
+    GpioPin* blue_record = &blue;
 
-    digitalWrite(red, HIGH);
-    digitalWrite(green, HIGH);
-    digitalWrite(blue, LOW);
+    // configure pins
+    pinMode(red_record, GpioModeOutputOpenDrain);
+    pinMode(green_record, GpioModeOutputOpenDrain);
+    pinMode(blue_record, GpioModeOutputOpenDrain);
+
+    digitalWrite(red_record, HIGH);
+    digitalWrite(green_record, HIGH);
+    digitalWrite(blue_record, LOW);
 
     uint32_t exitcode = run_minunit();
 
     if(exitcode == 0) {
         // test passed
-        digitalWrite(red, HIGH);
-        digitalWrite(green, LOW);
-        digitalWrite(blue, HIGH);
+        digitalWrite(red_record, HIGH);
+        digitalWrite(green_record, LOW);
+        digitalWrite(blue_record, HIGH);
     } else {
         // test failed
-        digitalWrite(red, LOW);
-        digitalWrite(green, HIGH);
-        digitalWrite(blue, HIGH);
+        digitalWrite(red_record, LOW);
+        digitalWrite(green_record, HIGH);
+        digitalWrite(blue_record, HIGH);
     }
 
     set_exitcode(exitcode);
diff --git a/core/api-hal/api-gpio.c b/core/api-hal/api-gpio.c
new file mode 100644
index 000000000..74e2adeb6
--- /dev/null
+++ b/core/api-hal/api-gpio.c
@@ -0,0 +1,49 @@
+#include "api-gpio.h"
+
+osMutexId_t gpioInitMutex;
+
+bool gpio_api_init(void) {
+    gpioInitMutex = osMutexNew(NULL);
+    if(gpioInitMutex == NULL) return false;
+    return true;
+}
+
+// init GPIO
+void gpio_init(GpioPin* gpio, GpioMode mode) {
+    if(osMutexAcquire(gpioInitMutex, osWaitForever) == osOK) {
+        hal_gpio_init(gpio, mode, GpioPullNo, GpioSpeedLow);
+        osMutexRelease(gpioInitMutex);
+    }
+}
+
+// init GPIO, extended version
+void gpio_init_ex(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed) {
+    hal_gpio_init(gpio, mode, pull, speed);
+}
+
+// put GPIO to Z-state
+void gpio_disable(GpioDisableRecord* gpio_record) {
+    GpioPin* gpio_pin = acquire_mutex(gpio_record->gpio_mutex, 0);
+    if(gpio_pin == NULL) {
+        gpio_pin = gpio_record->gpio;
+    }
+    hal_gpio_init(gpio_pin, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
+    release_mutex(gpio_record->gpio_mutex, gpio_pin);
+}
+
+// get GPIO record
+ValueMutex* gpio_open_mutex(const char* name) {
+    ValueMutex* gpio_mutex = (ValueMutex*)furi_open(name);
+
+    // TODO disable gpio on app exit
+    //if(gpio_mutex != NULL) flapp_on_exit(gpio_disable, gpio_mutex);
+
+    return gpio_mutex;
+}
+
+// get GPIO record and acquire mutex
+GpioPin* gpio_open(const char* name) {
+    ValueMutex* gpio_mutex = gpio_open_mutex(name);
+    GpioPin* gpio_pin = acquire_mutex(gpio_mutex, FLIPPER_HELPER_TIMEOUT);
+    return gpio_pin;
+}
\ No newline at end of file
diff --git a/core/api-hal/api-gpio.h b/core/api-hal/api-gpio.h
new file mode 100644
index 000000000..e9176393d
--- /dev/null
+++ b/core/api-hal/api-gpio.h
@@ -0,0 +1,37 @@
+#pragma once
+#include "flipper.h"
+#include "flipper_v2.h"
+#include "api-hal-gpio.h"
+
+typedef struct {
+    ValueMutex* gpio_mutex;
+    GpioPin* gpio;
+} GpioDisableRecord;
+
+// init GPIO API
+bool gpio_api_init();
+
+// init GPIO
+void gpio_init(GpioPin* gpio, GpioMode mode);
+
+// init GPIO, extended version
+void gpio_init_ex(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed);
+
+// write value to GPIO, false = LOW, true = HIGH
+static inline void gpio_write(GpioPin* gpio, bool state) {
+    hal_gpio_write(gpio, state);
+}
+
+// read value from GPIO, false = LOW, true = HIGH
+static inline bool gpio_read(GpioPin* gpio) {
+    return hal_gpio_read(gpio);
+}
+
+// put GPIO to Z-state
+void gpio_disable(GpioDisableRecord* gpio_record);
+
+// get GPIO record
+ValueMutex* gpio_open_mutex(const char* name);
+
+// get GPIO record and acquire mutex
+GpioPin* gpio_open(const char* name);
\ No newline at end of file
diff --git a/core/app.cpp b/core/app.cpp
index ff179510d..ef9942920 100644
--- a/core/app.cpp
+++ b/core/app.cpp
@@ -2,6 +2,7 @@
 
 extern "C" {
 #include "flipper.h"
+#include "flipper_v2.h"
 #include "log.h"
 #include "applications.h"
 #include "tty_uart.h"
@@ -14,6 +15,7 @@ extern "C" void set_exitcode(uint32_t _exitcode) {
 }
 
 extern "C" int app() {
+    init_flipper_api();
     register_tty_uart();
 
     FuriRecordSubscriber* log = get_default_log();
diff --git a/core/core.mk b/core/core.mk
index c9a00e80d..478e4e804 100644
--- a/core/core.mk
+++ b/core/core.mk
@@ -4,4 +4,5 @@ CFLAGS			+= -I$(CORE_DIR)
 ASM_SOURCES		+= $(wildcard $(CORE_DIR)/*.s)
 C_SOURCES		+= $(wildcard $(CORE_DIR)/*.c)
 C_SOURCES		+= $(wildcard $(CORE_DIR)/api-basic/*.c)
+C_SOURCES		+= $(wildcard $(CORE_DIR)/api-hal/*.c)
 CPP_SOURCES		+= $(wildcard $(CORE_DIR)/*.cpp)
diff --git a/core/flipper.h b/core/flipper.h
index 6f867a5f8..a1dc66596 100644
--- a/core/flipper.h
+++ b/core/flipper.h
@@ -5,7 +5,7 @@ extern "C" {
 #endif
 
 #include "main.h"
-#include "flipper_hal.h"
+#include "api-hal.h"
 #include "cmsis_os.h"
 #include "furi-deprecated.h"
 
@@ -17,21 +17,7 @@ extern "C" {
 #endif
 
 #include <stdio.h>
-
-// Arduino defines
-
-#define pinMode app_gpio_init
-#define digitalWrite app_gpio_write
-#define digitalRead app_gpio_read
-#define EEMEM
-#define delayMicroseconds delay_us
-#define delay osDelay
-#define byte uint8_t
-
-#define OUTPUT GpioModeOutput
-#define INPUT GpioModeInput
-#define LOW false
-#define HIGH true
+#include "flipper_arduino.h"
 
 void set_exitcode(uint32_t _exitcode);
 
diff --git a/core/flipper_arduino.h b/core/flipper_arduino.h
new file mode 100644
index 000000000..fe1da0699
--- /dev/null
+++ b/core/flipper_arduino.h
@@ -0,0 +1,16 @@
+#pragma once
+#include "stdint.h"
+
+// Arduino defines
+#define pinMode gpio_init
+#define digitalWrite gpio_write
+#define digitalRead gpio_read
+#define delayMicroseconds delay_us
+#define delay osDelay
+
+#define OUTPUT GpioModeOutputPushPull
+#define INPUT GpioModeInput
+#define LOW false
+#define HIGH true
+
+typedef uint8_t byte;
\ No newline at end of file
diff --git a/core/flipper_v2.c b/core/flipper_v2.c
new file mode 100644
index 000000000..9a4e4bc6a
--- /dev/null
+++ b/core/flipper_v2.c
@@ -0,0 +1,5 @@
+#include "flipper_v2.h"
+
+bool init_flipper_api(void) {
+    return gpio_api_init();
+}
\ No newline at end of file
diff --git a/core/flipper_v2.h b/core/flipper_v2.h
index ca3624683..cb6b63e80 100644
--- a/core/flipper_v2.h
+++ b/core/flipper_v2.h
@@ -14,8 +14,15 @@ extern "C" {
 
 #include "api-basic/memmgr.h"
 
+#include "api-hal/api-gpio.h"
+
 #include "gui/gui.h"
 
+// tmeout for helper functions
+#define FLIPPER_HELPER_TIMEOUT 10
+
+bool init_flipper_api(void);
+
 #ifdef __cplusplus
 }
 #endif
\ No newline at end of file
diff --git a/firmware/targets/f2/Inc/flipper_hal.h b/firmware/targets/f2/Inc/flipper_hal.h
deleted file mode 100644
index 9e12a2378..000000000
--- a/firmware/targets/f2/Inc/flipper_hal.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
-Flipper devices inc.
-
-GPIO and HAL implementations
-*/
-
-#pragma once
-
-#include <stdbool.h>
-#include "main.h"
-
-typedef enum { GpioModeInput, GpioModeOutput, GpioModeOpenDrain } GpioMode;
-
-typedef struct {
-    GPIO_TypeDef* port;
-    uint32_t pin;
-} GpioPin;
-
-void app_gpio_init(GpioPin gpio, GpioMode mode);
-
-static inline void app_gpio_write(GpioPin gpio, bool state) {
-    if(gpio.pin != 0) {
-        if(state) {
-            gpio.port->BSRR = (uint32_t)gpio.pin;
-        } else {
-            gpio.port->BRR = (uint32_t)gpio.pin;
-        }
-    }
-}
-
-static inline bool app_gpio_read(GpioPin gpio) {
-    if(gpio.pin != 0) {
-        return (gpio.port->IDR & gpio.pin) != 0x00u;
-    }
-
-    return false;
-}
-void delay_us_init_DWT(void);
-void delay_us(float time);
-
-void pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel);
-void pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel);
-
-extern TIM_HandleTypeDef htim8;
-
-static inline void app_tim_ic_init(bool both) {
-    HAL_TIM_OC_Stop(&htim8, TIM_CHANNEL_2);
-
-    TIM_IC_InitTypeDef sConfigIC = {0};
-    sConfigIC.ICPolarity = both ? TIM_INPUTCHANNELPOLARITY_BOTHEDGE :
-                                  TIM_INPUTCHANNELPOLARITY_FALLING;
-    sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
-    sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
-    sConfigIC.ICFilter = 0;
-    HAL_TIM_IC_ConfigChannel(&htim8, &sConfigIC, TIM_CHANNEL_2);
-
-    HAL_TIM_IC_Start_IT(&htim8, TIM_CHANNEL_2);
-}
-
-static inline void app_tim_pulse(uint32_t width) {
-    htim8.State = HAL_TIM_STATE_BUSY;
-
-    __HAL_TIM_DISABLE(&htim8);
-
-    __HAL_TIM_SET_COUNTER(&htim8, 0);
-
-    TIM_OC_InitTypeDef sConfigOC;
-    sConfigOC.OCMode = TIM_OCMODE_INACTIVE;
-    sConfigOC.Pulse = (uint16_t)(width);
-    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
-    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
-    // HAL_TIM_OC_ConfigChannel(&htim8, &sConfigOC, TIM_CHANNEL_2);
-
-    htim8.Lock = HAL_LOCKED;
-
-    /* Configure the TIM Channel 2 in Output Compare */
-    TIM_OC2_SetConfig(htim8.Instance, &sConfigOC);
-
-    htim8.Lock = HAL_UNLOCKED;
-
-    // TIM_CCxChannelCmd(htim8.Instance, TIM_CHANNEL_2, TIM_CCx_ENABLE);
-
-    /* Reset the CCxE Bit */
-    htim8.Instance->CCER &= ~(TIM_CCER_CC1E << (TIM_CHANNEL_2 & 0x1FU));
-
-    /* Set or reset the CCxE Bit */
-    htim8.Instance->CCER |= (uint32_t)(TIM_CCx_ENABLE << (TIM_CHANNEL_2 & 0x1FU));
-
-    __HAL_TIM_MOE_ENABLE(&htim8);
-    __HAL_TIM_ENABLE(&htim8);
-
-    htim8.State = HAL_TIM_STATE_READY;
-}
-
-static inline void app_tim_stop() {
-    HAL_TIM_OC_Stop(&htim8, TIM_CHANNEL_2);
-    HAL_TIM_IC_Stop(&htim8, TIM_CHANNEL_2);
-}
diff --git a/firmware/targets/f2/Inc/input_priv.h b/firmware/targets/f2/Inc/input_priv.h
index 90fd495e0..86ba658d7 100644
--- a/firmware/targets/f2/Inc/input_priv.h
+++ b/firmware/targets/f2/Inc/input_priv.h
@@ -2,7 +2,7 @@
 #define __INPUT_PRIV_H
 
 #include "main.h"
-#include "flipper_hal.h"
+#include "flipper_v2.h"
 
 #define DEBOUNCE_TICKS 10
 
diff --git a/firmware/targets/f2/Src/flipper_hal.c b/firmware/targets/f2/Src/flipper_hal.c
deleted file mode 100644
index 04264b208..000000000
--- a/firmware/targets/f2/Src/flipper_hal.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
-Flipper devices inc.
-
-GPIO and HAL implementations
-*/
-
-#include "main.h"
-#include "flipper_hal.h"
-
-void app_gpio_init(GpioPin gpio, GpioMode mode) {
-    if(gpio.pin != 0) {
-        GPIO_InitTypeDef GPIO_InitStruct;
-
-        GPIO_InitStruct.Pin = gpio.pin;
-        GPIO_InitStruct.Pull = GPIO_NOPULL;
-
-        switch(mode) {
-        case GpioModeInput:
-            GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-            break;
-
-        case GpioModeOutput:
-            GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-            GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
-            break;
-
-        case GpioModeOpenDrain:
-            GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
-            GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
-            break;
-        }
-
-        HAL_GPIO_Init(gpio.port, &GPIO_InitStruct);
-    }
-}
-
-void delay_us_init_DWT(void) {
-    CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
-    DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
-    DWT->CYCCNT = 0U;
-}
-
-void delay_us(float time) {
-    uint32_t start = DWT->CYCCNT;
-    uint32_t time_ticks = time * (SystemCoreClock / 1000000);
-    while((DWT->CYCCNT - start) < time_ticks) {
-    };
-}
-
-void pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel) {
-    tim->Init.CounterMode = TIM_COUNTERMODE_UP;
-    tim->Init.Period = (uint32_t)((SystemCoreClock / (tim->Init.Prescaler + 1)) / freq);
-    tim->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
-    tim->Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
-    HAL_TIM_PWM_Init(tim);
-
-    TIM_OC_InitTypeDef sConfigOC;
-
-    sConfigOC.OCMode = TIM_OCMODE_PWM1;
-    sConfigOC.Pulse = (uint16_t)(tim->Init.Period * value);
-    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
-    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
-    HAL_TIM_PWM_ConfigChannel(tim, &sConfigOC, channel);
-    HAL_TIM_PWM_Start(tim, channel);
-}
-
-void pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel) {
-    HAL_TIM_PWM_Stop(tim, channel);
-}
\ No newline at end of file
diff --git a/firmware/targets/f2/Src/main.c b/firmware/targets/f2/Src/main.c
index 87b314893..4780056f5 100644
--- a/firmware/targets/f2/Src/main.c
+++ b/firmware/targets/f2/Src/main.c
@@ -31,7 +31,7 @@
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 #include "fatfs/fatfs.h"
-#include "flipper_hal.h"
+#include "api-hal.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
diff --git a/firmware/targets/f2/api-hal/api-hal-delay.c b/firmware/targets/f2/api-hal/api-hal-delay.c
new file mode 100644
index 000000000..53db1fb00
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-delay.c
@@ -0,0 +1,14 @@
+#include "api-hal-delay.h"
+
+void delay_us_init_DWT(void) {
+    CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+    DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
+    DWT->CYCCNT = 0U;
+}
+
+void delay_us(float time) {
+    uint32_t start = DWT->CYCCNT;
+    uint32_t time_ticks = time * (SystemCoreClock / 1000000);
+    while((DWT->CYCCNT - start) < time_ticks) {
+    };
+}
\ No newline at end of file
diff --git a/firmware/targets/f2/api-hal/api-hal-delay.h b/firmware/targets/f2/api-hal/api-hal-delay.h
new file mode 100644
index 000000000..4df5cd4ba
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-delay.h
@@ -0,0 +1,5 @@
+#pragma once
+#include "main.h"
+
+void delay_us(float time);
+void delay_us_init_DWT(void);
\ No newline at end of file
diff --git a/firmware/targets/f2/api-hal/api-hal-gpio.c b/firmware/targets/f2/api-hal/api-hal-gpio.c
new file mode 100644
index 000000000..cf8863535
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-gpio.c
@@ -0,0 +1,14 @@
+#include "api-hal-gpio.h"
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed) {
+    // TODO: Alternate Functions
+    GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    GPIO_InitStruct.Pin = gpio->pin;
+    GPIO_InitStruct.Mode = mode;
+    GPIO_InitStruct.Pull = pull;
+    GPIO_InitStruct.Speed = speed;
+
+    HAL_GPIO_Init(gpio->port, &GPIO_InitStruct);
+}
diff --git a/firmware/targets/f2/api-hal/api-hal-gpio.h b/firmware/targets/f2/api-hal/api-hal-gpio.h
new file mode 100644
index 000000000..e31b63f9c
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-gpio.h
@@ -0,0 +1,61 @@
+#pragma once
+#include "main.h"
+#include "stdbool.h"
+
+// this defined in xx_hal_gpio.c, so...
+#define GPIO_NUMBER (16U)
+
+typedef enum {
+    GpioModeInput = GPIO_MODE_INPUT,
+    GpioModeOutputPushPull = GPIO_MODE_OUTPUT_PP,
+    GpioModeOutputOpenDrain = GPIO_MODE_OUTPUT_OD,
+    GpioModeAltFunctionPushPull = GPIO_MODE_AF_PP,
+    GpioModeAltFunctionOpenDrain = GPIO_MODE_AF_OD,
+    GpioModeAnalog = GPIO_MODE_ANALOG,
+    GpioModeInterruptRise = GPIO_MODE_IT_RISING,
+    GpioModeInterruptFall = GPIO_MODE_IT_FALLING,
+    GpioModeInterruptRiseFall = GPIO_MODE_IT_RISING_FALLING,
+    GpioModeEventRise = GPIO_MODE_EVT_RISING,
+    GpioModeEventFall = GPIO_MODE_EVT_FALLING,
+    GpioModeEventRiseFall = GPIO_MODE_EVT_RISING_FALLING,
+} GpioMode;
+
+typedef enum {
+    GpioSpeedLow = GPIO_SPEED_FREQ_LOW,
+    GpioSpeedMedium = GPIO_SPEED_FREQ_MEDIUM,
+    GpioSpeedHigh = GPIO_SPEED_FREQ_HIGH,
+    GpioSpeedVeryHigh = GPIO_SPEED_FREQ_VERY_HIGH,
+} GpioSpeed;
+
+typedef enum {
+    GpioPullNo = GPIO_NOPULL,
+    GpioPullUp = GPIO_PULLUP,
+    GpioPullDown = GPIO_PULLDOWN,
+} GpioPull;
+
+typedef struct {
+    GPIO_TypeDef* port;
+    uint16_t pin;
+} GpioPin;
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed);
+
+// write value to GPIO, false = LOW, true = HIGH
+static inline void hal_gpio_write(GpioPin* gpio, bool state) {
+    // writing to BSSR is an atomic operation
+    if(state == true) {
+        gpio->port->BSRR = gpio->pin;
+    } else {
+        gpio->port->BSRR = (uint32_t)gpio->pin << GPIO_NUMBER;
+    }
+}
+
+// read value from GPIO, false = LOW, true = HIGH
+static inline bool hal_gpio_read(GpioPin* gpio) {
+    if((gpio->port->IDR & gpio->pin) != 0x00U) {
+        return true;
+    } else {
+        return false;
+    }
+}
\ No newline at end of file
diff --git a/firmware/targets/f2/api-hal/api-hal-pwm.c b/firmware/targets/f2/api-hal/api-hal-pwm.c
new file mode 100644
index 000000000..f102e3494
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-pwm.c
@@ -0,0 +1,22 @@
+#include "api-hal-pwm.h"
+
+void hal_pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel) {
+    tim->Init.CounterMode = TIM_COUNTERMODE_UP;
+    tim->Init.Period = (uint32_t)((SystemCoreClock / (tim->Init.Prescaler + 1)) / freq);
+    tim->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+    tim->Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+    HAL_TIM_PWM_Init(tim);
+
+    TIM_OC_InitTypeDef sConfigOC;
+
+    sConfigOC.OCMode = TIM_OCMODE_PWM1;
+    sConfigOC.Pulse = (uint16_t)(tim->Init.Period * value);
+    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+    HAL_TIM_PWM_ConfigChannel(tim, &sConfigOC, channel);
+    HAL_TIM_PWM_Start(tim, channel);
+}
+
+void hal_pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel) {
+    HAL_TIM_PWM_Stop(tim, channel);
+}
\ No newline at end of file
diff --git a/firmware/targets/f2/api-hal/api-hal-pwm.h b/firmware/targets/f2/api-hal/api-hal-pwm.h
new file mode 100644
index 000000000..604a55f8e
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal-pwm.h
@@ -0,0 +1,6 @@
+#pragma once
+#include "main.h"
+#include "stdbool.h"
+
+void hal_pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel);
+void hal_pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel);
\ No newline at end of file
diff --git a/firmware/targets/f2/api-hal/api-hal.h b/firmware/targets/f2/api-hal/api-hal.h
new file mode 100644
index 000000000..b5dd7707a
--- /dev/null
+++ b/firmware/targets/f2/api-hal/api-hal.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "api-hal-gpio.h"
+#include "api-hal-delay.h"
+#include "api-hal-pwm.h"
diff --git a/firmware/targets/f2/target.mk b/firmware/targets/f2/target.mk
index f9a5e109d..2359df933 100644
--- a/firmware/targets/f2/target.mk
+++ b/firmware/targets/f2/target.mk
@@ -64,7 +64,8 @@ C_SOURCES		+= \
 	$(CUBE_DIR)/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c \
 	$(CUBE_DIR)/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c \
 	$(wildcard $(TARGET_DIR)/Src/*.c) \
-	$(wildcard $(TARGET_DIR)/Src/fatfs/*.c)
+	$(wildcard $(TARGET_DIR)/Src/fatfs/*.c) \
+	$(wildcard $(TARGET_DIR)/api-hal/*.c)
 
 ASM_SOURCES += $(TARGET_DIR)/startup_stm32l476xx.s
 
@@ -93,5 +94,6 @@ CFLAGS += \
 	-I$(CUBE_DIR)/Drivers/CMSIS/Device/ST/STM32L4xx/Include \
 	-I$(CUBE_DIR)/Drivers/CMSIS/Include \
 	-I$(CUBE_DIR)/Drivers/CMSIS/Include \
-	-I$(TARGET_DIR)/Src/fatfs
+	-I$(TARGET_DIR)/Src/fatfs \
+	-I$(TARGET_DIR)/api-hal
 
diff --git a/firmware/targets/local/Inc/flipper_hal.h b/firmware/targets/local/Inc/flipper_hal.h
index 230b710c3..cafe8dcca 100644
--- a/firmware/targets/local/Inc/flipper_hal.h
+++ b/firmware/targets/local/Inc/flipper_hal.h
@@ -10,56 +10,6 @@ GPIO and HAL implementations
 #include <stdbool.h>
 #include "main.h"
 
-typedef enum { GpioModeInput, GpioModeOutput, GpioModeOpenDrain } GpioMode;
-
-typedef struct {
-    const char* port;
-    uint32_t pin;
-    GpioMode mode;
-} GpioPin;
-
-void app_gpio_init(GpioPin gpio, GpioMode mode);
-
-static inline void app_gpio_write(GpioPin gpio, bool state) {
-    if(gpio.pin != 0) {
-        if(state) {
-            printf("[GPIO] %s%d on\n", gpio.port, gpio.pin);
-        } else {
-            printf("[GPIO] %s%d off\n", gpio.port, gpio.pin);
-        }
-    } else {
-        printf("[GPIO] no pin\n");
-    }
-}
-
-static inline bool app_gpio_read(GpioPin gpio) {
-    // TODO emulate pin state?
-
-    return false;
-}
-
-typedef enum { GPIO_PIN_SET = 1, GPIO_PIN_RESET = 0 } HAL_GPIO_PIN_STATE;
-
-void HAL_GPIO_WritePin(const char* port, uint32_t pin, HAL_GPIO_PIN_STATE state);
-
-void delay_us(uint32_t time);
-
-void pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel);
-
-extern TIM_HandleTypeDef htim8;
-
-static inline void app_tim_ic_init(bool both) {
-    printf("[TIM] init\n");
-}
-
-static inline void app_tim_pulse(uint32_t width) {
-    printf("[TIM] pulse %d\n", width);
-}
-
-static inline void app_tim_stop() {
-    printf("[TIM] stop\n");
-}
-
 #define GPIOA "PA"
 #define GPIOB "PB"
 #define GPIOC "PC"
diff --git a/firmware/targets/local/Src/flipper_hal.c b/firmware/targets/local/Src/flipper_hal.c
index a121bb438..65392da94 100644
--- a/firmware/targets/local/Src/flipper_hal.c
+++ b/firmware/targets/local/Src/flipper_hal.c
@@ -8,41 +8,6 @@ GPIO and HAL implementations
 #include "flipper_hal.h"
 #include <stdio.h>
 
-void app_gpio_init(GpioPin gpio, GpioMode mode) {
-    if(gpio.pin != 0) {
-        switch(mode) {
-        case GpioModeInput:
-            printf("[GPIO] %s%d input\n", gpio.port, gpio.pin);
-            break;
-
-        case GpioModeOutput:
-            printf("[GPIO] %s%d push pull\n", gpio.port, gpio.pin);
-            break;
-
-        case GpioModeOpenDrain:
-            printf("[GPIO] %s%d open drain\n", gpio.port, gpio.pin);
-            break;
-        }
-
-        gpio.mode = mode;
-    } else {
-        printf("[GPIO] no pin\n");
-    }
-}
-
-void delay_us(uint32_t time) {
-    // How to deal with it
-    printf("[DELAY] %d us\n", time);
-}
-
-void pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel) {
-    printf("[TIM] set pwm %d:%d %f Hz, %f%%\n", *tim, channel, freq, value * 100.);
-}
-
-void HAL_GPIO_WritePin(const char* port, uint32_t pin, HAL_GPIO_PIN_STATE state) {
-    printf("[GPIO] set pin %s:%d = %d\n", port, pin, state);
-}
-
 HAL_StatusTypeDef
 HAL_SPI_Transmit(SPI_HandleTypeDef* hspi, uint8_t* pData, uint16_t size, uint32_t Timeout) {
     printf("[SPI] write %d to %s: ", size, *hspi);
diff --git a/firmware/targets/local/api-hal/api-hal-delay.c b/firmware/targets/local/api-hal/api-hal-delay.c
new file mode 100644
index 000000000..e40d084f2
--- /dev/null
+++ b/firmware/targets/local/api-hal/api-hal-delay.c
@@ -0,0 +1,7 @@
+#include "api-hal-delay.h"
+#include <stdio.h>
+
+void delay_us(uint32_t time) {
+    // How to deal with it
+    printf("[DELAY] %d us\n", time);
+}
\ No newline at end of file
diff --git a/firmware/targets/local/api-hal/api-hal-delay.h b/firmware/targets/local/api-hal/api-hal-delay.h
new file mode 100644
index 000000000..9db6e3a85
--- /dev/null
+++ b/firmware/targets/local/api-hal/api-hal-delay.h
@@ -0,0 +1,4 @@
+#pragma once
+#include "main.h"
+
+void delay_us(uint32_t time);
\ No newline at end of file
diff --git a/firmware/targets/local/api-hal/api-hal-gpio.c b/firmware/targets/local/api-hal/api-hal-gpio.c
new file mode 100644
index 000000000..13124acec
--- /dev/null
+++ b/firmware/targets/local/api-hal/api-hal-gpio.c
@@ -0,0 +1,47 @@
+#include "api-hal-gpio.h"
+#include <stdio.h>
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed){
+    // TODO more mode
+    if(gpio->pin != 0) {
+        switch(mode) {
+        case GpioModeInput:
+            printf("[GPIO] %s%d input\n", gpio->port, gpio->pin);
+            break;
+
+        case GpioModeOutputPushPull:
+            printf("[GPIO] %s%d push pull\n", gpio->port, gpio->pin);
+            break;
+
+        case GpioModeOutputOpenDrain:
+            printf("[GPIO] %s%d open drain\n", gpio->port, gpio->pin);
+            break;
+        
+        default:
+            printf("[GPIO] %s%d mode %d unsupported\n", gpio->port, gpio->pin, mode);
+            break;
+        }
+    } else {
+        printf("[GPIO] no pin\n");
+    }
+}
+
+// write value to GPIO, false = LOW, true = HIGH
+void hal_gpio_write(GpioPin* gpio, bool state){
+    if(gpio->pin != 0) {
+        if(state) {
+            printf("[GPIO] %s%d on\n", gpio->port, gpio->pin);
+        } else {
+            printf("[GPIO] %s%d off\n", gpio->port, gpio->pin);
+        }
+    } else {
+        printf("[GPIO] no pin\n");
+    }
+}
+
+// read value from GPIO, false = LOW, true = HIGH
+bool hal_gpio_read(GpioPin* gpio){
+    // TODO emulate pin state?
+    return false;
+}
diff --git a/firmware/targets/local/api-hal/api-hal-gpio.h b/firmware/targets/local/api-hal/api-hal-gpio.h
new file mode 100644
index 000000000..e6dd4856a
--- /dev/null
+++ b/firmware/targets/local/api-hal/api-hal-gpio.h
@@ -0,0 +1,49 @@
+#pragma once
+#include "main.h"
+#include "stdbool.h"
+
+// hw-api
+
+typedef char GPIO_TypeDef;
+
+typedef enum {
+    GpioModeInput,
+    GpioModeOutputPushPull,
+    GpioModeOutputOpenDrain,
+    GpioModeAltFunctionPushPull,
+    GpioModeAltFunctionOpenDrain,
+    GpioModeAnalog,
+    GpioModeInterruptRise,
+    GpioModeInterruptFall,
+    GpioModeInterruptRiseFall,
+    GpioModeEventRise,
+    GpioModeEventFall,
+    GpioModeEventRiseFall,
+} GpioMode;
+
+typedef enum {
+    GpioSpeedLow,
+    GpioSpeedMedium,
+    GpioSpeedHigh,
+    GpioSpeedVeryHigh,
+} GpioSpeed;
+
+typedef enum {
+    GpioPullNo,
+    GpioPullUp,
+    GpioPullDown,
+} GpioPull;
+
+typedef struct {
+    GPIO_TypeDef* port;
+    uint16_t pin;
+} GpioPin;
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed);
+
+// write value to GPIO, false = LOW, true = HIGH
+void hal_gpio_write(GpioPin* gpio, bool state);
+
+// read value from GPIO, false = LOW, true = HIGH
+bool hal_gpio_read(GpioPin* gpio);
\ No newline at end of file
diff --git a/firmware/targets/local/api-hal/api-hal.h b/firmware/targets/local/api-hal/api-hal.h
new file mode 100644
index 000000000..0125618f9
--- /dev/null
+++ b/firmware/targets/local/api-hal/api-hal.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "api-hal-gpio.h"
+#include "api-hal-delay.h"
+#include "flipper_hal.h"
\ No newline at end of file
diff --git a/firmware/targets/local/target.mk b/firmware/targets/local/target.mk
index 741b16abc..d8ae2454b 100644
--- a/firmware/targets/local/target.mk
+++ b/firmware/targets/local/target.mk
@@ -18,5 +18,8 @@ C_SOURCES += $(TARGET_DIR)/fatfs/syscall.c
 # memory manager
 C_SOURCES += $(TARGET_DIR)/Src/heap_4.c
 
+CFLAGS += -I$(TARGET_DIR)/api-hal
+C_SOURCES += $(wildcard $(TARGET_DIR)/api-hal/*.c)
+
 run: all
 	$(OBJ_DIR)/$(PROJECT).elf
\ No newline at end of file