Add automatic IR blaster detection

removed last_settings because it isnt needed anymore

applications/main/infrared/infrared_app.c

@@ -204,20 +204,15 @@ static InfraredApp* infrared_alloc() {
     infrared->loading = loading_alloc();
     infrared->progress = infrared_progress_view_alloc();
 
-    infrared->last_settings = infrared_last_settings_alloc();
-    infrared_last_settings_load(infrared->last_settings);
-
-    if(infrared->last_settings->ext_5v) {
+    if(furi_hal_infrared_is_external_connected()) {
         uint8_t attempts = 0;
         while(!furi_hal_power_is_otg_enabled() && attempts++ < 5) {
             furi_hal_power_enable_otg();
             furi_delay_ms(10);
         }
     }
 
-    if(infrared->last_settings->ext_out && !furi_hal_infrared_get_debug_out_status()) {
-        furi_hal_infrared_set_debug_out(true);
-    }
+    furi_hal_infrared_block_external_output(false);
 
     return infrared;
 }
@@ -286,13 +281,11 @@ static void infrared_free(InfraredApp* infrared) {
     furi_string_free(infrared->file_path);
     furi_string_free(infrared->button_name);
 
-    if(infrared->last_settings->ext_5v) {
-        if(furi_hal_power_is_otg_enabled()) {
-            furi_hal_power_disable_otg();
-        }
+    if(furi_hal_power_is_otg_enabled()) {
+        furi_hal_power_disable_otg();
     }
 
-    infrared_last_settings_free(infrared->last_settings);
+    furi_hal_infrared_block_external_output(false);
 
     free(infrared);
 }

applications/main/infrared/infrared_app_i.h

@@ -31,7 +31,7 @@
 #include "infrared_remote.h"
 #include "infrared_brute_force.h"
 #include "infrared_custom_event.h"
-#include "infrared_last_settings.h"
+// #include "infrared_last_settings.h"
 
 #include "scenes/infrared_scene.h"
 #include "views/infrared_progress_view.h"
@@ -129,7 +129,7 @@ struct InfraredApp {
     /** Arbitrary text storage for various inputs. */
     char text_store[INFRARED_TEXT_STORE_NUM][INFRARED_TEXT_STORE_SIZE + 1];
     InfraredAppState app_state; /**< Application state. */
-    InfraredLastSettings* last_settings; /**< Last settings. */
+    //InfraredLastSettings* last_settings; /**< Last settings. */
 
     void* rpc_ctx; /**< Pointer to the RPC context object. */
 };

applications/main/infrared/scenes/infrared_scene_debug_settings.c

@@ -9,19 +9,22 @@ const char* const infrared_debug_cfg_variables_text[] = {
 };
 
 static void infrared_scene_debug_settings_changed(VariableItem* item) {
-    InfraredApp* infrared = variable_item_get_context(item);
     value_index_ir = variable_item_get_current_value_index(item);
 
     variable_item_set_current_value_text(item, infrared_debug_cfg_variables_text[value_index_ir]);
 
-    furi_hal_infrared_set_debug_out(value_index_ir);
-
-    infrared->last_settings->ext_out = value_index_ir == 1;
-    infrared_last_settings_save(infrared->last_settings);
+    if(value_index_ir == 0) {
+        furi_hal_infrared_set_debug_out(false);
+        furi_hal_infrared_block_external_output(true);
+        if(furi_hal_power_is_otg_enabled()) {
+            furi_hal_power_disable_otg();
+        }
+    } else {
+        furi_hal_infrared_block_external_output(false);
+    }
 }
 
 static void infrared_scene_debug_settings_power_changed(VariableItem* item) {
-    InfraredApp* infrared = variable_item_get_context(item);
     bool value = variable_item_get_current_value_index(item);
     if(value) {
         for(int i = 0; i < 5 && !furi_hal_power_is_otg_enabled(); i++) {
@@ -34,9 +37,6 @@ static void infrared_scene_debug_settings_power_changed(VariableItem* item) {
         }
     }
     variable_item_set_current_value_text(item, value ? "ON" : "OFF");
-
-    infrared->last_settings->ext_5v = value;
-    infrared_last_settings_save(infrared->last_settings);
 }
 
 static void infrared_debug_settings_start_var_list_enter_callback(void* context, uint32_t index) {
@@ -49,7 +49,10 @@ void infrared_scene_debug_settings_on_enter(void* context) {
 
     VariableItemList* variable_item_list = infrared->variable_item_list;
 
-    value_index_ir = furi_hal_infrared_get_debug_out_status();
+    value_index_ir =
+        (furi_hal_infrared_is_external_connected() &&
+         !furi_hal_infrared_is_external_output_blocked());
+
     VariableItem* item = variable_item_list_add(
         variable_item_list,
         "Send signal to",
@@ -70,10 +73,19 @@ void infrared_scene_debug_settings_on_enter(void* context) {
         infrared_scene_debug_settings_power_changed,
         infrared);
     bool enabled = furi_hal_power_is_otg_enabled() ||
-                   furi_hal_power_is_charging(); // 5v is enabled via hardware if charging
+                   furi_hal_power_is_charging() || // 5v is enabled via hardware if charging
+                   furi_hal_infrared_is_external_connected();
     variable_item_set_current_value_index(item, enabled);
     variable_item_set_current_value_text(item, enabled ? "ON" : "OFF");
 
+    if(furi_hal_infrared_is_external_connected() && !furi_hal_power_is_otg_enabled()) {
+        uint8_t attempts = 0;
+        while(!furi_hal_power_is_otg_enabled() && attempts++ < 5) {
+            furi_hal_power_enable_otg();
+            furi_delay_ms(10);
+        }
+    }
+
     view_dispatcher_switch_to_view(infrared->view_dispatcher, InfraredViewVariableItemList);
 }
 

targets/f7/api_symbols.csv

@@ -1319,8 +1319,11 @@ Function,+,furi_hal_infrared_async_tx_set_signal_sent_isr_callback,void,"FuriHal
 Function,+,furi_hal_infrared_async_tx_start,void,"uint32_t, float"
 Function,+,furi_hal_infrared_async_tx_stop,void,
 Function,+,furi_hal_infrared_async_tx_wait_termination,void,
+Function,+,furi_hal_infrared_block_external_output,void,_Bool
 Function,+,furi_hal_infrared_get_debug_out_status,_Bool,
 Function,+,furi_hal_infrared_is_busy,_Bool,
+Function,+,furi_hal_infrared_is_external_connected,_Bool,
+Function,+,furi_hal_infrared_is_external_output_blocked,_Bool,
 Function,+,furi_hal_infrared_set_debug_out,void,_Bool
 Function,-,furi_hal_init,void,
 Function,-,furi_hal_init_early,void,

targets/f7/furi_hal/furi_hal_infrared.c

@@ -2,6 +2,7 @@
 #include <furi_hal_interrupt.h>
 #include <furi_hal_resources.h>
 #include <furi_hal_bus.h>
+#include <furi_hal_power.h>
 
 #include <stm32wbxx_ll_tim.h>
 #include <stm32wbxx_ll_dma.h>
@@ -79,6 +80,7 @@ static volatile InfraredState furi_hal_infrared_state = InfraredStateIdle;
 static InfraredTimTx infrared_tim_tx;
 static InfraredTimRx infrared_tim_rx;
 static bool infrared_external_output;
+static bool block_external;
 
 static void furi_hal_infrared_tx_fill_buffer(uint8_t buf_num, uint8_t polarity_shift);
 static void furi_hal_infrared_async_tx_free_resources(void);
@@ -648,12 +650,29 @@ void furi_hal_infrared_async_tx_start(uint32_t freq, float duty_cycle) {
     furi_delay_us(5);
     LL_TIM_GenerateEvent_UPDATE(INFRARED_DMA_TIMER); /* DMA -> TIMx_RCR */
     furi_delay_us(5);
+
+    if(block_external) {
+        infrared_external_output = false;
+    } else {
+        infrared_external_output = furi_hal_infrared_is_external_connected();
+    }
+
     if(infrared_external_output) {
+        if(!furi_hal_power_is_otg_enabled()) {
+            uint8_t attempts = 0;
+            while(!furi_hal_power_is_otg_enabled() && attempts++ < 5) {
+                furi_hal_power_enable_otg();
+                furi_delay_ms(10);
+            }
+            furi_delay_ms(100);
+        }
+
         LL_GPIO_ResetOutputPin(
             gpio_ext_pa7.port, gpio_ext_pa7.pin); /* when disable it prevents false pulse */
         furi_hal_gpio_init_ex(
             &gpio_ext_pa7, GpioModeAltFunctionPushPull, GpioPullUp, GpioSpeedHigh, GpioAltFn1TIM1);
     } else {
+        furi_hal_power_disable_otg();
         LL_GPIO_ResetOutputPin(
             gpio_infrared_tx.port,
             gpio_infrared_tx.pin); /* when disable it prevents false pulse */
@@ -708,3 +727,19 @@ void furi_hal_infrared_async_tx_set_signal_sent_isr_callback(
     infrared_tim_tx.signal_sent_callback = callback;
     infrared_tim_tx.signal_sent_context = context;
 }
+
+bool furi_hal_infrared_is_external_connected() {
+    furi_hal_gpio_init(&gpio_ext_pa7, GpioModeInput, GpioPullUp, GpioSpeedHigh);
+    furi_delay_ms(1);
+    bool is_external_connected = !furi_hal_gpio_read(&gpio_ext_pa7);
+    furi_hal_gpio_init(&gpio_ext_pa7, GpioModeAnalog, GpioPullDown, GpioSpeedLow);
+    return is_external_connected;
+}
+
+void furi_hal_infrared_block_external_output(bool block) {
+    block_external = block;
+}
+
+bool furi_hal_infrared_is_external_output_blocked(void) {
+    return block_external;
+}

targets/furi_hal_include/furi_hal_infrared.h

@@ -149,6 +149,25 @@ void furi_hal_infrared_async_tx_set_signal_sent_isr_callback(
     FuriHalInfraredTxSignalSentISRCallback callback,
     void* context);
 
+/** Check if a module (like IR Blaster) is connected to PA7 
+ * 
+ * return true if a module is connected, false otherwise
+ */
+bool furi_hal_infrared_is_external_connected();
+
+/** Block external output on PA7
+ * 
+ * if blocked, its forced to internal IR. If unblocked, external IR is used if connected
+ * @param block true to block, false to unblock
+ */
+void furi_hal_infrared_block_external_output(bool block);
+
+/** Check if external output on PA7 is blocked
+ * 
+ * @return true if blocked, false otherwise
+ */
+bool furi_hal_infrared_is_external_output_blocked();
+
 #ifdef __cplusplus
 }
 #endif