view Small_CPU/Inc/pressure.h @ 787:aeb72882f30a

Dev Bugfx Empty buffer indication and stability improvments: The mux prototype used ASCII coding for channel selection while the current realization used real number (0...4) for addressing the mux. The UART read function uses the '0' to indicate an empty buffer element. The mux now loops back '0' used by channel selection causing the read function to process the data. As result data interrups are visible at the display. To avoid this another character has been defined indicate empty buffer locations. Beside this the functionality has been improved with regard to access speed and better recovery in case of transition failure.
author Ideenmodellierer
date Sun, 04 Jun 2023 21:59:26 +0200
parents 4093ac18b25c
children
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/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef PRESSURE_H
#define PRESSURE_H

#include <stdint.h>

uint8_t init_pressure(void);
void pressure_set_offset (float pressureOffset, float temperatureOffset);

uint8_t pressure_update(void);
void pressure_update_alternating(void);

uint8_t is_init_pressure_done(void);

HAL_StatusTypeDef  pressure_sensor_get_pressure_raw(void);
HAL_StatusTypeDef  pressure_sensor_get_temperature_raw(void);
void pressure_calculation(void);

float get_temperature(void);
float get_pressure_mbar(void);
float get_surface_mbar(void);

uint8_t is_surface_pressure_stable(void);
float set_last_surface_pressure_stable(void);

void init_surface_ring(uint8_t force);
void update_surface_pressure(uint8_t call_rhythm_seconds);

uint32_t demo_modify_temperature_and_pressure(int32_t divetime_in_seconds, uint8_t subseconds, float ceiling_mbar);

#endif /* PRESSURE_H */