reflow-oven-control-sw/stm-firmware/include/reflow-controller/hw-version-detect.h

83 lines
2.4 KiB
C

/* Reflow Oven Controller
*
* Copyright (C) 2021 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @addtogroup hw-version-detect
* @{
*/
#ifndef _HW_VERSION_DETECT_H_
#define _HW_VERSION_DETECT_H_
#include <stdint.h>
/**
* @brief GPIO Port used for hardware version detection
*/
#define HW_REV_DETECT_GPIO GPIOE
/**
* @brief RCC Clock register mask used to enable @ref HW_REV_DETECT_GPIO GPIO Port
*/
#define HW_REV_DETECT_RCC_FIELD RCC_AHB1ENR_GPIOEEN
/**
* @brief Lowest pin on @ref HW_REV_DETECT_GPIO GPIO Port that shall be used to read in the hardware version
*/
#define HW_REV_DETECT_PIN_LOW (8U)
/**
* @brief Highest pin on @ref HW_REV_DETECT_GPIO GPIO Port that shall be used to read in the hardware version
*/
#define HW_REV_DETECT_PIN_HIGH (15U)
/**
* @brief PCB/Hardware Revision Type
*/
enum hw_revision {
HW_REV_NOT_DETECTED = 0, /**< @brief The hardware has'nt been detected (yet) */
HW_REV_ERROR = 1, /**< @brief The hardware revision could not be detected due to an internal error */
HW_REV_V1_2 = 120, /**< @brief Hardware Revision v1.2 */
HW_REV_V1_3 = 130, /**< @brief Hardware Revision v1.3 */
};
/**
* @brief This function returns the hardware version of the PCB.
*
* This is used to
* determine the feature set of the hardware. So this firmware can be used on all hardwares.
*
* The first hardware revision supported, is: v1.2
*
* The function returns the HW revision as an enum hw_revision.
* For v1.2 the return value is 120 (HW_REV_V1_2).
* For v1.3 the return value is 130 (HW_REV_V1_3).
*
* Other return values are not defined yet.
*
* @return Harware revision
*/
enum hw_revision get_pcb_hardware_version(void);
#endif /* _HW_VERSION_DETECT_H_ */
/** @} */