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workspace/AUTOM10/Core/Src/adc.c

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+/*
+ * adc.c
+ *
+ *  Created on: Dec 8, 2025
+ *      Author: user
+ */
+#include "adc.h"
+
+/* Filled by ADC+DMA: latest raw value of each channel */
+volatile uint16_t adc_dma_buf[ADC_NUM_CHANNELS];
+
+/* Smoothed value (50ms average with settings above) */
+volatile uint16_t adc_avg[ADC_NUM_CHANNELS];
+
+/* Internal accumulators used only in the timer ISR */
+static uint32_t adc_sum[ADC_NUM_CHANNELS];
+static uint8_t  adc_sum_count = 0;
+
+/* Optional flag to tell main loop that a new averaged set is ready */
+volatile uint8_t adc_avg_ready = 0;
+
+uint16_t ch4 ;
+uint16_t ch5 ;
+uint16_t ch6 ;
+uint16_t ch7 ;
+uint16_t ch8 ;
+
+void manageAdc(void){
+
+    if (adc_avg_ready)
+    {
+        adc_avg_ready = 0;
+
+        // Read averaged channels (example mapping)
+        ch4 = adc_avg[0];
+        ch5 = adc_avg[1];
+        ch6 = adc_avg[2];
+        ch7 = adc_avg[3];
+        ch8 = adc_avg[4];
+
+        // Use them (convert to volts, control, etc.)
+        // float v4 = (3.3f * ch4) / 4095.0f;
+    }
+}
+
+void readAdc(void){
+    for (uint8_t i = 0; i < ADC_NUM_CHANNELS; i++)
+    {
+        adc_sum[i] += adc_dma_buf[i];
+    }
+
+    adc_sum_count++;
+
+    /* When we collected ADC_AVG_WINDOW samples → compute average */
+    if (adc_sum_count >= ADC_AVG_WINDOW)
+    {
+        for (uint8_t i = 0; i < ADC_NUM_CHANNELS; i++)
+        {
+            adc_avg[i] = (uint16_t)(adc_sum[i] / ADC_AVG_WINDOW);
+            adc_sum[i] = 0;
+        }
+
+        adc_sum_count = 0;
+        adc_avg_ready = 1;    // tell main loop new data is ready
+    }
+}