mirror of
https://github.com/eddyem/stm32samples.git
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76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* flash.h
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*
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* Copyright 2017 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include <stdint.h>
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#include "gpio.h"
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#include "usart.h"
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#include "usb_descr.h"
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// register with flash size (in blocks)
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#ifndef FLASH_SIZE_REG
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#define FLASH_SIZE_REG ((uint32_t)0x1FFFF7CC)
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#endif
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#define FLASH_SIZE *((uint16_t*)FLASH_SIZE_REG)
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// maximal size (in letters, ASCII, no ending \0) of iInterface for settings
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#define MAX_IINTERFACE_SZ (16)
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typedef struct {
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uint32_t speed;
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uint8_t cpol : 1;
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uint8_t cpha : 1;
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uint8_t lsbfirst : 1;
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// these flags - only for data in/out formatting
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uint8_t rxonly : 1; // use format SPI=len instead of SPI=data
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uint8_t txonly : 1; // don't receive data
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} spiconfig_t;
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/*
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* struct to save user configurations
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*/
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typedef struct __attribute__((packed, aligned(4))){
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uint16_t userconf_sz; // "magick number"
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uint16_t CANspeed; // default CAN speed (in kBaud!!!)
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spiconfig_t spiconfig;
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uint8_t iIlengths[InterfacesAmount]; // length in BYTES (symbols amount x2)!
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uint16_t iInterface[InterfacesAmount][MAX_IINTERFACE_SZ]; // we store Interface name here in UTF!
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// gpio settings
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pinconfig_t pinconfig[2][16]; // GPIOA, GPIOB
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usartconf_t usartconfig;
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uint8_t I2Cspeed; // I2C speed index
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} user_conf;
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extern user_conf the_conf; // global user config (read from FLASH to RAM)
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extern int currentconfidx;
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// data from ld-file: start address of storage
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void flashstorage_init();
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int store_userconf();
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void dump_userconf();
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int erase_storage();
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uint32_t storage_capacity();
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