Matrix Hardware Midi Out

Author: 203Null

devices/MatrixBlock6_ESP32S3/Drivers/HWMidi.cpp

@@ -0,0 +1,46 @@
+#include "Device.h"
+
+namespace Device
+{
+    namespace HWMidi
+    {
+        MidiPort* midiPort;
+        TaskHandle_t portTaskHandle = NULL;
+        uart_port_t uartChannel = UART_NUM_2;
+
+        void portTask(void* param) {
+            MidiPort port = MidiPort("Midi Port", MIDI_PORT_PHYISCAL);
+            midiPort = &port;
+            MidiPacket packet;
+            while (true)
+            {
+                if (port.Get(&packet, portMAX_DELAY))
+                { uart_write_bytes(uartChannel, packet.data, 3); }
+            }
+        }
+
+        void Init()
+        {
+            uart_config_t uart_config = {
+                .baud_rate = 31250,
+                .data_bits = UART_DATA_8_BITS,
+                .parity    = UART_PARITY_DISABLE,
+                .stop_bits = UART_STOP_BITS_1,
+                .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+                .rx_flow_ctrl_thresh = 0,
+                .source_clk = UART_SCLK_DEFAULT,
+            };
+
+            int rx_buffer_size = 2048; // TODO: Optimize this value
+            if(rx_gpio == GPIO_NUM_NC)
+            { 
+                rx_buffer_size = 129; // Must be larger than 128, even though we don't use it
+            }
+
+            ESP_ERROR_CHECK(uart_driver_install(uartChannel, rx_buffer_size, 0, 0, NULL, 0));
+            ESP_ERROR_CHECK(uart_param_config(uartChannel, &uart_config));
+            ESP_ERROR_CHECK(uart_set_pin(uartChannel, tx_gpio, rx_gpio, GPIO_NUM_NC, GPIO_NUM_NC));
+            xTaskCreate(portTask, "Hardware Midi Port", configMINIMAL_STACK_SIZE * 2, NULL, configMAX_PRIORITIES - 2,&portTaskHandle);
+        }
+    }
+}

devices/MatrixBlock6_ESP32S3/Family.cpp

@@ -17,7 +17,9 @@ namespace Device
     NVS::Init();
     LED::Init();
     KeyPad::Init();
+    
 
+    HWMidi::Init();
     BLEMIDI::Init(name);
 
     // WIFI::Init();

devices/MatrixBlock6_ESP32S3/Family.h

@@ -16,6 +16,9 @@
 #include "esp_efuse_table.h"
 #include "esp_adc/adc_oneshot.h"
 
+#include "driver/uart.h"
+#include "driver/gpio.h"
+
 #include "nvs_flash.h"
 
 #include "esp_private/system_internal.h"
@@ -88,6 +91,11 @@ namespace Device
     MidiPacket GetMidi();
   }
 
+  namespace HWMidi
+  {
+    void Init();
+  }
+
   namespace ESPNOW
   {
     extern bool started;

devices/MatrixBlock6_ESP32S3/Varients/MatrixPro/Config.h

@@ -107,6 +107,12 @@ namespace Device
     }
   }
 
+  namespace HWMidi
+  {
+    inline gpio_num_t tx_gpio = GPIO_NUM_18;
+    inline gpio_num_t rx_gpio = GPIO_NUM_NC;
+  }
+
 // LED
 #define MAX_LED_LAYERS 5
   inline gpio_num_t led_pin;