finally find the problem of code disappearing

Software/Core/Src/adc.c

@@ -0,0 +1,24 @@
+#include <stdint.h>
+
+#include "can-halal.h"
+#include "stm32f0xx_hal_adc.h"
+
+int16_t id = 0x200;
+int32_t adcRes = 0;
+
+void adc_init(ADC_HandleTypeDef* hadc){
+    HAL_ADCEx_Calibration_Start(hadc);
+}
+
+void adc_loop(ADC_HandleTypeDef* hadc){
+    HAL_ADC_Start_IT(hadc);
+    static uint8_t data[8];
+    ftcan_marshal_unsigned(data, adcRes, 4);
+    ftcan_transmit(id, data, sizeof(data));
+    HAL_Delay(5);
+    //testing gitignore
+}
+
+void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc){
+    adcRes = HAL_ADC_GetValue(hadc);
+}