add header file for real

src/current_sense/hardware_specific/esp32/esp32_i2s_driver.h

@@ -0,0 +1,27 @@
+#ifndef SIMPLEFOC_ESP32_HAL_I2S_DRIVER_H_ 
+#define SIMPLEFOC_ESP32_HAL_I2S_DRIVER_H_
+
+#include "Arduino.h"
+
+#if defined(ESP_H) && defined(ARDUINO_ARCH_ESP32) && defined(SOC_MCPWM_SUPPORTED) 
+
+// This function reads data from the I2S FIFO and processes it to obtain average readings for each channel.
+// The ADC counts get saved in uint32_t i2s_adc_buffer[].
+static void IRAM_ATTR readFiFo();
+
+static void IRAM_ATTR i2s_isr(void *arg);
+
+// Contrary to its name (so it can be called by the library), this function reads the already converted values from fifo
+// and prints optional debug information.
+// When using interrupt driven sampling, it only prints debug information.
+void IRAM_ATTR _startADC3PinConversionLowSide();
+void IRAM_ATTR _startADC3PinConversionInline();
+
+// Takes the buffered adc counts and returns the coresponding float voltage for a pin.
+float IRAM_ATTR _readADCVoltageI2S(const int pin, const void *cs_params);
+
+// Sets up the I2S peripheral and ADC. Can be run multiple times to configure multiple motors.
+void* IRAM_ATTR _configureI2S(const bool lowside, const void* driver_params, const int pinA, const int pinB, const int pinC);
+
+#endif /* SIMPLEFOC_ESP32_HAL_I2S_DRIVER_H_ */
+#endif /* ESP32 */