feat: add MIDI CC 120/121 for independent A/B slot preset loading

.gitignore

@@ -24,4 +24,3 @@ ui_design_480x320land/cache
 ui_design_480x320land/autosave
 
 
-

MidiCommands.md

@@ -116,4 +116,6 @@ This project uses a low-cost embedded controller (Espressif ESP32-S3) to form a
 | Cab Sim Bypass | 117 | On: 127, Off: 0 |
 | Global Tempo Source | 118 | Global: 127, Local: 0 |
 | Global Tuning Reference | 119 | 0-127 |
+| Load Preset to Slot A | 120 | 0-19 |
+| Load Preset to Slot B | 121 | 0-19 |
 | Select Preset | 127 | 0-19 |

source/main/midi_helper.c

@@ -1229,19 +1229,37 @@ esp_err_t midi_helper_adjust_param_via_midi(uint8_t change_num, uint8_t midi_val
 
         case 120:
         {
-            // reserved for setting preset in slot A
-            ESP_LOGW(TAG, "CC Not implemented yet %d", change_num);
-            return ESP_FAIL;
+            // Load preset to Slot A without switching to it
+            if (midi_value >= (usb_get_max_presets_for_connected_modeller()))
+            {
+                ESP_LOGW(TAG, "Unsupported Midi CC 120 value %d (max %d)", midi_value, usb_get_max_presets_for_connected_modeller() - 1);
+            }
+            else
+            {
+                usb_tonex_one_load_preset_to_slot_a(midi_value);
+            }
+
+            // no param change needed
+            return ESP_OK;
         } break;
 
         case 121:
         {
-            // reserved for setting preset in slot B
-            ESP_LOGW(TAG, "CC Not implemented yet %d", change_num);
-            return ESP_FAIL;
+            // Load preset to Slot B without switching to it
+            if (midi_value >= (usb_get_max_presets_for_connected_modeller()))
+            {
+                ESP_LOGW(TAG, "Unsupported Midi CC 121 value %d (max %d)", midi_value, usb_get_max_presets_for_connected_modeller() - 1);
+            }
+            else
+            {
+                usb_tonex_one_load_preset_to_slot_b(midi_value);
+            }
+
+            // no param change needed
+            return ESP_OK;
         } break;
 
-        case 127: 
+        case 127:
         {
             // Custom case: use CC to change params.
             if (midi_value >= (usb_get_max_presets_for_connected_modeller())) 

source/main/usb_tonex_one.c

@@ -431,6 +431,44 @@ static esp_err_t __attribute__((unused)) usb_tonex_one_set_active_slot(Slot newS
     return tonex_common_transmit(cdc_dev, FramedBuffer, framed_length, TONEX_USB_TX_BUFFER_SIZE);    
 }
 
+/****************************************************************************
+* NAME:        usb_tonex_one_load_preset_to_slot_a
+* DESCRIPTION: Load a preset to Slot A without switching to it (MIDI CC 120)
+* PARAMETERS:  preset - Preset index (0-19 for presets 1-20)
+* RETURN:      ESP_OK on success, ESP_FAIL on error
+* NOTES:       Bypasses CONFIG_ITEM_SAVE_PRESET_TO_SLOT configuration
+*****************************************************************************/
+esp_err_t usb_tonex_one_load_preset_to_slot_a(uint16_t preset)
+{
+    if (preset >= MAX_PRESETS_TONEX_ONE)
+    {
+        ESP_LOGW(TAG, "Invalid preset index %d for Slot A (max %d)", preset, MAX_PRESETS_TONEX_ONE - 1);
+        return ESP_FAIL;
+    }
+
+    ESP_LOGI(TAG, "Loading preset %d to Slot A via MIDI CC 120", preset);
+    return usb_tonex_one_set_preset_in_slot(preset, A, 0);
+}
+
+/****************************************************************************
+* NAME:        usb_tonex_one_load_preset_to_slot_b
+* DESCRIPTION: Load a preset to Slot B without switching to it (MIDI CC 121)
+* PARAMETERS:  preset - Preset index (0-19 for presets 1-20)
+* RETURN:      ESP_OK on success, ESP_FAIL on error
+* NOTES:       Bypasses CONFIG_ITEM_SAVE_PRESET_TO_SLOT configuration
+*****************************************************************************/
+esp_err_t usb_tonex_one_load_preset_to_slot_b(uint16_t preset)
+{
+    if (preset >= MAX_PRESETS_TONEX_ONE)
+    {
+        ESP_LOGW(TAG, "Invalid preset index %d for Slot B (max %d)", preset, MAX_PRESETS_TONEX_ONE - 1);
+        return ESP_FAIL;
+    }
+
+    ESP_LOGI(TAG, "Loading preset %d to Slot B via MIDI CC 121", preset);
+    return usb_tonex_one_set_preset_in_slot(preset, B, 0);
+}
+
 /****************************************************************************
 * NAME:        
 * DESCRIPTION: 

source/main/usb_tonex_one.h

@@ -30,6 +30,10 @@ void usb_tonex_one_init(class_driver_t* driver_obj, QueueHandle_t comms_queue);
 void usb_tonex_one_deinit(void);
 void usb_tonex_one_preallocate_memory(void);
 
+// MIDI CC slot targeting functions
+esp_err_t usb_tonex_one_load_preset_to_slot_a(uint16_t preset);
+esp_err_t usb_tonex_one_load_preset_to_slot_b(uint16_t preset);
+
 #ifdef __cplusplus
 } /*extern "C"*/
 #endif