Api hw gpio pwm (#199)

* initial gpio layer

* move temlplate.c to template.c.example in preparing to applications.mk rework

* separate arduino layer

* separate flipper_hal.x

* prepare to switch applications on v2 core gpio api

* swithch applications to v2 gpio api

* gpio api for local target

* better gpio_disable handling

* remove pwm functions from local target

* inline gpio funcs

* common function to init all api's

* fix local example blink

* move delay us to hal api folder

* move pwm_set/pwm_stop to hal api folder

* update applications to use hal pwm api

* remove gpio mode case warning

* add speaker demo to build

Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

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;
+}

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);