/* Megumin LED display firmware
 * Copyright (C) 2018 Sebastian Götte <code@jaseg.net>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __GLOBAL_H__
#define __GLOBAL_H__

/* Workaround for sub-par ST libraries */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#include <stm32f1xx.h>
#include <stm32f1xx_ll_utils.h>
#include <stm32f1xx_ll_spi.h>
#pragma GCC diagnostic pop

#include <system_stm32f1xx.h>

#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>

/* Microcontroller part number: STM32F030F4C6 */

/* Things used for module status reporting. */
#define FIRMWARE_VERSION 1
#define HARDWARE_VERSION 0

#define TS_CAL1 (*(uint16_t *)0x1FFFF7B8)
#define VREFINT_CAL (*(uint16_t *)0x1FFFF7BA)

#define VMEAS_R_HIGH 10000 /* kiloohms */
#define VMEAS_R_LOW 3300 /* kiloohms */

static inline uint16_t be16toh(uint16_t be16in) { return __builtin_bswap16(be16in); }
static inline uint16_t htobe16(uint16_t hostin) { return __builtin_bswap16(hostin); }
static inline uint16_t le16toh(uint16_t le16in) { return le16in; }
static inline uint16_t htole16(uint16_t hostin) { return hostin; }

static inline uint32_t be32toh(uint32_t be32in) { return __builtin_bswap32(be32in); }
static inline uint32_t htobe32(uint32_t hostin) { return __builtin_bswap32(hostin); }
static inline uint32_t le32toh(uint32_t le32in) { return le32in; }
static inline uint32_t htole32(uint32_t hostin) { return hostin; }


#define ARRAY_SIZE(arr) \
    (sizeof(arr) / sizeof((arr)[0]) \
     + sizeof(typeof(int[1 - 2 * \
           !!__builtin_types_compatible_p(typeof(arr), \
                 typeof(&arr[0]))])) * 0)

#endif/*__GLOBAL_H__*/