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Ben Katz / mbed-dev_spine

mbed library sources. Supersedes mbed-src.

Dependents: SPIne CH_Communicatuin_Test CH_Communicatuin_Test2 MCP_SPIne ... more

Fork of mbed-dev-f303 by Ben Katz

drivers/FlashIAP.cpp@179:97f825502e2a, 2018-05-02 (annotated)

Committer:: benkatz
Date:: Wed May 02 18:08:16 2018 +0000
Revision:: 179:97f825502e2a
Parent:: 169:e3b6fe271b81

Who changed what in which revision?

User	Revision	Line number	New contents of line
<>	160:d5399cc887bb	1	/* mbed Microcontroller Library
<>	160:d5399cc887bb	2	* Copyright (c) 2017 ARM Limited
<>	160:d5399cc887bb	3	*
<>	160:d5399cc887bb	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
<>	160:d5399cc887bb	5	* of this software and associated documentation files (the "Software"), to deal
<>	160:d5399cc887bb	6	* in the Software without restriction, including without limitation the rights
<>	160:d5399cc887bb	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
<>	160:d5399cc887bb	8	* copies of the Software, and to permit persons to whom the Software is
<>	160:d5399cc887bb	9	* furnished to do so, subject to the following conditions:
<>	160:d5399cc887bb	10	*
<>	160:d5399cc887bb	11	* The above copyright notice and this permission notice shall be included in
<>	160:d5399cc887bb	12	* all copies or substantial portions of the Software.
<>	160:d5399cc887bb	13	*
<>	160:d5399cc887bb	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
<>	160:d5399cc887bb	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
<>	160:d5399cc887bb	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
<>	160:d5399cc887bb	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
<>	160:d5399cc887bb	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
<>	160:d5399cc887bb	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
<>	160:d5399cc887bb	20	* SOFTWARE.
<>	160:d5399cc887bb	21	*/
<>	160:d5399cc887bb	22
<>	160:d5399cc887bb	23	#include <string.h>
<>	160:d5399cc887bb	24	#include "FlashIAP.h"
<>	160:d5399cc887bb	25	#include "mbed_assert.h"
<>	160:d5399cc887bb	26
<>	160:d5399cc887bb	27
<>	160:d5399cc887bb	28	#ifdef DEVICE_FLASH
<>	160:d5399cc887bb	29
<>	160:d5399cc887bb	30	namespace mbed {
<>	160:d5399cc887bb	31
<>	160:d5399cc887bb	32	SingletonPtr<PlatformMutex> FlashIAP::_mutex;
<>	160:d5399cc887bb	33
<>	160:d5399cc887bb	34	static inline bool is_aligned(uint32_t number, uint32_t alignment)
<>	160:d5399cc887bb	35	{
<>	160:d5399cc887bb	36	if ((number % alignment) != 0) {
<>	160:d5399cc887bb	37	return false;
<>	160:d5399cc887bb	38	} else {
<>	160:d5399cc887bb	39	return true;
<>	160:d5399cc887bb	40	}
<>	160:d5399cc887bb	41	}
<>	160:d5399cc887bb	42
<>	160:d5399cc887bb	43	FlashIAP::FlashIAP()
<>	160:d5399cc887bb	44	{
<>	160:d5399cc887bb	45
<>	160:d5399cc887bb	46	}
<>	160:d5399cc887bb	47
<>	160:d5399cc887bb	48	FlashIAP::~FlashIAP()
<>	160:d5399cc887bb	49	{
<>	160:d5399cc887bb	50
<>	160:d5399cc887bb	51	}
<>	160:d5399cc887bb	52
<>	160:d5399cc887bb	53	int FlashIAP::init()
<>	160:d5399cc887bb	54	{
<>	160:d5399cc887bb	55	int ret = 0;
<>	160:d5399cc887bb	56	_mutex->lock();
<>	160:d5399cc887bb	57	if (flash_init(&_flash)) {
Kojto	169:e3b6fe271b81	58	ret = -1;
<>	160:d5399cc887bb	59	}
<>	160:d5399cc887bb	60	_mutex->unlock();
<>	160:d5399cc887bb	61	return ret;
<>	160:d5399cc887bb	62	}
<>	160:d5399cc887bb	63
<>	160:d5399cc887bb	64	int FlashIAP::deinit()
<>	160:d5399cc887bb	65	{
<>	160:d5399cc887bb	66	int ret = 0;
<>	160:d5399cc887bb	67	_mutex->lock();
<>	160:d5399cc887bb	68	if (flash_free(&_flash)) {
Kojto	169:e3b6fe271b81	69	ret = -1;
<>	160:d5399cc887bb	70	}
<>	160:d5399cc887bb	71	_mutex->unlock();
<>	160:d5399cc887bb	72	return ret;
<>	160:d5399cc887bb	73	}
<>	160:d5399cc887bb	74
<>	160:d5399cc887bb	75
<>	160:d5399cc887bb	76	int FlashIAP::read(void *buffer, uint32_t addr, uint32_t size)
<>	160:d5399cc887bb	77	{
Kojto	169:e3b6fe271b81	78	int32_t ret = -1;
<>	160:d5399cc887bb	79	_mutex->lock();
Kojto	169:e3b6fe271b81	80	ret = flash_read(&_flash, addr, (uint8_t *) buffer, size);
<>	160:d5399cc887bb	81	_mutex->unlock();
Kojto	169:e3b6fe271b81	82	return ret;
<>	160:d5399cc887bb	83	}
<>	160:d5399cc887bb	84
<>	160:d5399cc887bb	85	int FlashIAP::program(const void *buffer, uint32_t addr, uint32_t size)
<>	160:d5399cc887bb	86	{
<>	160:d5399cc887bb	87	uint32_t page_size = get_page_size();
<>	160:d5399cc887bb	88	uint32_t current_sector_size = flash_get_sector_size(&_flash, addr);
<>	160:d5399cc887bb	89	// addr and size should be aligned to page size, and multiple of page size
<>	160:d5399cc887bb	90	// page program should not cross sector boundaries
<>	160:d5399cc887bb	91	if (!is_aligned(addr, page_size) \|\|
<>	160:d5399cc887bb	92	!is_aligned(size, page_size) \|\|
<>	160:d5399cc887bb	93	(size < page_size) \|\|
<>	160:d5399cc887bb	94	(((addr % current_sector_size) + size) > current_sector_size)) {
<>	160:d5399cc887bb	95	return -1;
<>	160:d5399cc887bb	96	}
<>	160:d5399cc887bb	97
<>	160:d5399cc887bb	98	int ret = 0;
<>	160:d5399cc887bb	99	_mutex->lock();
<>	160:d5399cc887bb	100	if (flash_program_page(&_flash, addr, (const uint8_t *)buffer, size)) {
<>	160:d5399cc887bb	101	ret = -1;
<>	160:d5399cc887bb	102	}
<>	160:d5399cc887bb	103	_mutex->unlock();
<>	160:d5399cc887bb	104	return ret;
<>	160:d5399cc887bb	105	}
<>	160:d5399cc887bb	106
<>	160:d5399cc887bb	107	bool FlashIAP::is_aligned_to_sector(uint32_t addr, uint32_t size)
<>	160:d5399cc887bb	108	{
<>	160:d5399cc887bb	109	uint32_t current_sector_size = flash_get_sector_size(&_flash, addr);
<>	160:d5399cc887bb	110	if (!is_aligned(size, current_sector_size) \|\|
<>	160:d5399cc887bb	111	!is_aligned(addr, current_sector_size)) {
<>	160:d5399cc887bb	112	return false;
<>	160:d5399cc887bb	113	} else {
<>	160:d5399cc887bb	114	return true;
<>	160:d5399cc887bb	115	}
<>	160:d5399cc887bb	116	}
<>	160:d5399cc887bb	117
<>	160:d5399cc887bb	118	int FlashIAP::erase(uint32_t addr, uint32_t size)
<>	160:d5399cc887bb	119	{
<>	160:d5399cc887bb	120	uint32_t current_sector_size = 0UL;
<>	160:d5399cc887bb	121
<>	160:d5399cc887bb	122	if (!is_aligned_to_sector(addr, size)) {
<>	160:d5399cc887bb	123	return -1;
<>	160:d5399cc887bb	124	}
<>	160:d5399cc887bb	125
<>	160:d5399cc887bb	126	int32_t ret = 0;
<>	160:d5399cc887bb	127	_mutex->lock();
<>	160:d5399cc887bb	128	while (size) {
<>	160:d5399cc887bb	129	ret = flash_erase_sector(&_flash, addr);
<>	160:d5399cc887bb	130	if (ret != 0) {
<>	160:d5399cc887bb	131	ret = -1;
<>	160:d5399cc887bb	132	break;
<>	160:d5399cc887bb	133	}
<>	160:d5399cc887bb	134	current_sector_size = flash_get_sector_size(&_flash, addr);
<>	160:d5399cc887bb	135	if (!is_aligned_to_sector(addr, size)) {
<>	160:d5399cc887bb	136	ret = -1;
<>	160:d5399cc887bb	137	break;
<>	160:d5399cc887bb	138	}
<>	160:d5399cc887bb	139	size -= current_sector_size;
<>	160:d5399cc887bb	140	addr += current_sector_size;
<>	160:d5399cc887bb	141	}
<>	160:d5399cc887bb	142	_mutex->unlock();
<>	160:d5399cc887bb	143	return ret;
<>	160:d5399cc887bb	144	}
<>	160:d5399cc887bb	145
<>	160:d5399cc887bb	146	uint32_t FlashIAP::get_page_size() const
<>	160:d5399cc887bb	147	{
<>	160:d5399cc887bb	148	return flash_get_page_size(&_flash);
<>	160:d5399cc887bb	149	}
<>	160:d5399cc887bb	150
<>	160:d5399cc887bb	151	uint32_t FlashIAP::get_sector_size(uint32_t addr) const
<>	160:d5399cc887bb	152	{
<>	160:d5399cc887bb	153	return flash_get_sector_size(&_flash, addr);
<>	160:d5399cc887bb	154	}
<>	160:d5399cc887bb	155
<>	160:d5399cc887bb	156	uint32_t FlashIAP::get_flash_start() const
<>	160:d5399cc887bb	157	{
<>	160:d5399cc887bb	158	return flash_get_start_address(&_flash);
<>	160:d5399cc887bb	159	}
<>	160:d5399cc887bb	160
<>	160:d5399cc887bb	161	uint32_t FlashIAP::get_flash_size() const
<>	160:d5399cc887bb	162	{
<>	160:d5399cc887bb	163	return flash_get_size(&_flash);
<>	160:d5399cc887bb	164	}
<>	160:d5399cc887bb	165
<>	160:d5399cc887bb	166	}
<>	160:d5399cc887bb	167
<>	160:d5399cc887bb	168	#endif

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Type:	Library
Created:	02 May 2018
Imports:	22
Forks:	0
Commits:	180
Dependents:	11
Dependencies:	0
Followers:	9

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drivers/FlashIAP.cpp@179:97f825502e2a, 2018-05-02 (annotated)

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