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drivers: add support for MTDs emulated in RAM #19443

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merged 10 commits into from
Apr 12, 2023
Merged

drivers: add support for MTDs emulated in RAM #19443

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7561973
drivers/mtd: small fixes in doc
gschorcht Apr 2, 2023
609c090
drivers/mtd_emulatd: MTD emulated in RAM for testing
gschorcht Apr 2, 2023
0cdcac9
tests/unittests/test-mtd: use emulated MTD as test mockup
gschorcht Apr 11, 2023
af5b75a
tests/littlefs: use emulated MTD as test mockup
gschorcht Apr 2, 2023
f724f34
tests/littlefs2: use emulated MTD as test mockup
gschorcht Apr 2, 2023
631df7c
tests/spiffs: use emulated MTD as test mockup
gschorcht Apr 2, 2023
4bb283c
tests/usbus_msc: use emulated MTD as test mockup
gschorcht Apr 4, 2023
1d4d3e4
drivers/mtd_default: expose one SD Card and one MTD emulated
gschorcht Apr 11, 2023
4af1fa6
tests/littlefs: reduce sector count for emulated MTD
gschorcht Apr 12, 2023
89f18c7
tests/littlefs: remove blacklisted boards due to reduced sector count
gschorcht Apr 12, 2023
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tests/unittests/test-mtd: use emulated MTD as test mockup
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@gschorcht
gschorcht committed Apr 12, 2023
commit 0cdcac96bc29d197b59259ae24432b52d96c000d
1 change: 1 addition & 0 deletions tests/unittests/tests-mtd/Makefile.include
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Original file line number Diff line number Diff line change
@@ -1,2 +1,3 @@
USEMODULE += mtd
USEMODULE += mtd_emulated
USEMODULE += vfs
86 changes: 5 additions & 81 deletions tests/unittests/tests-mtd/tests-mtd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,9 @@
#ifdef MTD_0
#define dev (MTD_0)
#else

#include "mtd_emulated.h"

/* Test mock object implementing a simple RAM-based mtd */
#ifndef SECTOR_COUNT
#define SECTOR_COUNT 4
Expand All @@ -39,89 +42,10 @@
#ifndef PAGE_SIZE
#define PAGE_SIZE 128
#endif
#ifndef WRITE_SIZE
#define WRITE_SIZE 1
#endif

static uint8_t dummy_memory[PAGE_PER_SECTOR * PAGE_SIZE * SECTOR_COUNT];

static int _init(mtd_dev_t *dev)
{
(void)dev;

memset(dummy_memory, 0xff, sizeof(dummy_memory));
return 0;
}

static int _read(mtd_dev_t *dev, void *buff, uint32_t addr, uint32_t size)
{
(void)dev;

if (addr + size > sizeof(dummy_memory)) {
return -EOVERFLOW;
}
memcpy(buff, dummy_memory + addr, size);

return 0;
}

static int _write(mtd_dev_t *dev, const void *buff, uint32_t addr, uint32_t size)
{
(void)dev;

if (addr + size > sizeof(dummy_memory)) {
return -EOVERFLOW;
}
if (((addr % PAGE_SIZE) + size) > PAGE_SIZE) {
return -EOVERFLOW;
}
memcpy(dummy_memory + addr, buff, size);

return 0;
}

static int _erase(mtd_dev_t *dev, uint32_t addr, uint32_t size)
{
(void)dev;

if (size % (PAGE_PER_SECTOR * PAGE_SIZE) != 0) {
return -EOVERFLOW;
}
if (addr % (PAGE_PER_SECTOR * PAGE_SIZE) != 0) {
return -EOVERFLOW;
}
if (addr + size > sizeof(dummy_memory)) {
return -EOVERFLOW;
}
memset(dummy_memory + addr, 0xff, size);

return 0;
}

static int _power(mtd_dev_t *dev, enum mtd_power_state power)
{
(void)dev;
(void)power;
return 0;
}
MTD_EMULATED_DEV(0, SECTOR_COUNT, PAGE_PER_SECTOR, PAGE_SIZE);

static const mtd_desc_t driver = {
.init = _init,
.read = _read,
.write = _write,
.erase = _erase,
.power = _power,
};

static mtd_dev_t _dev = {
.driver = &driver,
.sector_count = SECTOR_COUNT,
.pages_per_sector = PAGE_PER_SECTOR,
.page_size = PAGE_SIZE,
.write_size = WRITE_SIZE,
};

static mtd_dev_t *dev = (mtd_dev_t*) &_dev;
#define dev (&mtd_emulated_dev0.base)

#endif /* MTD_0 */

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