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view Small_CPU/Inc/batteryGasGauge.h @ 319:d8e86af78474 fix-version

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bugfix: correct packed main version number in dive header This fixes a rather mysterious bug. Users report that up to 1.3.5 beta, a correct version number is shown in libdivecomputer based applications (like in Subsurface, in the extra data tab). Careful examining the code in both libdivecomputer and the firmware shows a subtle error in the bit mask and shift operation to pack a full X.Y.Z.beta version number in 2 bytes (as is available in the dive header) in the firmware end (as the libdivecomputer code looks sane, assuming this is the right way to pack things). Likely, this bug crept in in the conversion from the closed source Keil period into the open source GCC setup of the code base. So its impossible to document the exact history of this problem here. Further notice that the main version number is only 1 of 3 version numbers, denoting the full version of the firmware (besides Font and RTE). Finally notice that this way of packing is limited to 2^5 bits (decimal 32), so we could easily build a 1.4.21, but not a 1.4.55. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Wed, 19 Jun 2019 14:31:50 +0200
parents 5f11787b4f42
children 2defc8cd93ce
line wrap: on
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/**
  ******************************************************************************
  * @file    batteryGasGauge.h
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    09-Dec-2014
  * @brief	 LTC2942
  *           
  @verbatim                 
  ============================================================================== 
                        ##### How to use #####
  ============================================================================== 
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */ 

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef BATTERY_GAS_GAUGE_H
#define BATTERY_GAS_GAUGE_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/

void init_battery_gas_gauge(void);

float get_voltage(void);
float get_charge(void);

void battery_gas_gauge_get_data(void);
void battery_gas_gauge_set_charge_full(void);
void battery_gas_gauge_set(float percentage);

#ifdef __cplusplus
}
#endif

#endif /* BATTERY_GAS_GAUGE_H */

/************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/