From 8a0cdd9b4719263dc1bade05655c8425b828562465af0485ba091ca734353a2d Mon Sep 17 00:00:00 2001
From: Sebastian Mariano Flores <sebas.mariano15@gmail.com>
Date: Mon, 18 May 2026 23:47:52 -0600
Subject: [PATCH] ADC1-DMA feature

---
 .gitignore     |   4 ++
 platformio.ini |  13 ++++++-
 src/adc.cpp    |  10 +++++
 src/main.cpp   | 101 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 127 insertions(+), 1 deletion(-)
 create mode 100644 src/adc.cpp
 create mode 100644 src/main.cpp

diff --git a/.gitignore b/.gitignore
index 7e96ee4..40dd320 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,5 @@
 .pio
+compile_commands.json
+.clangd
+.vscode
+.cache
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index 8af3492..ffbadc1 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,6 +9,17 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [env:esp32-s3-devkitc-1]
-platform = espressif32
+platform = https://github.com/pioarduino/platform-espressif32/releases/download/stable/platform-espressif32.zip
 board = esp32-s3-devkitc-1
+build_type = debug
 framework = arduino
+monitor_speed = 230400
+board_build.arduino.memory_type = qio_opi
+board_build.flash_mode = qio
+board_build.psram_type = opi
+board_upload.flash_size = 16MB
+board_upload.maximum_size = 16777216
+board_build.partitions = default_16MB.csv
+board_build.extra_flags =
+	-DBOARD_HAS_PSRAM
+	-DCORE_DEBUG_LEVEL=5
diff --git a/src/adc.cpp b/src/adc.cpp
new file mode 100644
index 0000000..3a04416
--- /dev/null
+++ b/src/adc.cpp
@@ -0,0 +1,10 @@
+#pragma once
+#include "esp_adc/adc_continuous.h"
+
+
+void ADC() {
+    adc_continuous_handle_t handle = NULL;
+    adc_continuous_handle_cfg_t adc_config = {
+    
+    };
+}
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..adb54c9
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,101 @@
+#include "Arduino.h"
+#include "esp_adc/adc_continuous.h"
+
+// API ESP-IDF para ADC modo continuo (uso de DMA)
+#define MS_BLOQUE 10
+#define HZ_ADC 1000 // Limitado a 611 - 83333 para el ESP32-S3
+#define CANAL 3
+
+const uint32_t MUESTRAS_BLOQUE = (HZ_ADC * MS_BLOQUE) / 1000;
+const uint32_t FRAME_SIZE = MUESTRAS_BLOQUE * 4; // Constante física SOC_ADC_DIGI_RESULT_BYTES
+const uint32_t POOL_SIZE = FRAME_SIZE * 4; // Buffer DMA de 4 veces el tamaño del FRAME_SIZE
+uint8_t dma_buffer[FRAME_SIZE] = {0};
+adc_channel_t channels[1] = {ADC_CHANNEL_3};
+
+volatile bool dma_data_ready = false;
+adc_continuous_handle_t handle_ADC1_1 = NULL;
+
+// DEBUG
+uint16_t DRAM_contador = 0;
+
+
+bool IRAM_ATTR adc_dma_callback(adc_continuous_handle_t handle, const adc_continuous_evt_data_t *edata, void *user_data){
+    dma_data_ready = true;
+    return false;
+}
+
+void setupADC(adc_channel_t *canales, uint8_t numChannels){
+    adc_continuous_handle_cfg_t ADC1_1_config = {
+        .max_store_buf_size = POOL_SIZE,
+        .conv_frame_size = FRAME_SIZE,
+    };
+    ESP_ERROR_CHECK(adc_continuous_new_handle(&ADC1_1_config, &handle_ADC1_1));
+
+    adc_digi_pattern_config_t channel_config = {0};
+    channel_config.channel = canales[0];
+    channel_config.atten = ADC_ATTEN_DB_12;
+    channel_config.bit_width = ADC_BITWIDTH_12;
+    channel_config.unit = ADC_UNIT_1;
+
+    adc_continuous_config_t adc_config = {
+          .pattern_num = numChannels,
+          .adc_pattern = &channel_config,
+          .sample_freq_hz = HZ_ADC,
+          .conv_mode = ADC_CONV_SINGLE_UNIT_1,
+    };
+
+    ESP_ERROR_CHECK(adc_continuous_config(handle_ADC1_1, &adc_config));
+
+    adc_continuous_evt_cbs_t cb_config = {
+        .on_conv_done = adc_dma_callback,
+        .on_pool_ovf = NULL
+    };
+
+    ESP_ERROR_CHECK(adc_continuous_register_event_callbacks(handle_ADC1_1, &cb_config, NULL));
+    ESP_ERROR_CHECK(adc_continuous_start(handle_ADC1_1));
+    Serial.println("DMA Iniciado con sistema de bandera.");
+}
+
+void setup() {
+    Serial.begin(230400);
+    setupADC(channels, 1);
+}
+
+void loop() {
+    if (dma_data_ready) {
+        dma_data_ready = false;
+        uint32_t ret_num = 0;
+
+        // Leer los datos crudos del DMA
+        esp_err_t ret = adc_continuous_read(handle_ADC1_1, dma_buffer, FRAME_SIZE, &ret_num, 0);
+
+        if (ret == ESP_OK) {
+            adc_continuous_data_t parsed_data[MUESTRAS_BLOQUE];
+            uint32_t parsed_count = 0;
+
+            //API oficial documentada para extraer la información (reemplaza a los p->type2)
+            esp_err_t parse_ret = adc_continuous_parse_data(handle_ADC1_1,
+                                                            dma_buffer,
+                                                            ret_num,
+                                                            parsed_data,
+                                                            &parsed_count);
+
+            if (parse_ret == ESP_OK) {
+                for (uint32_t i = 0; i < parsed_count; i++) {
+                    if (parsed_data[i].valid) {
+                        DRAM_contador++;
+
+                        // Imprimir resultados
+                        Serial.printf("Unidad: ADC%u | Canal: %u | Valor: %04lu | Debug: %u\n",
+                                      parsed_data[i].unit + 1,
+                                      parsed_data[i].channel,
+                                      parsed_data[i].raw_data,
+                                      DRAM_contador);
+
+                        DRAM_contador = (DRAM_contador >= HZ_ADC) ? 0 : DRAM_contador;
+                    }
+                }
+            }
+        }
+    }
+}