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Added support for SPIF of size bigger than 16Mbyte 

- checks if size is bigger than 16Mbyte
- changes to 4 byte address mode of neccessary
pull/10779/head
Marten Lootsma 2019-06-06 15:42:41 +02:00
parent 489bd10626
commit aed0d054d7
1 changed files with 12 additions and 2 deletions
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14
components/storage/blockdevice/COMPONENT_SPIF/SPIFBlockDevice.cpp
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@ -56,6 +56,7 @@ using namespace mbed;
#define SPIF_BASIC_PARAM_TABLE_PAGE_SIZE_BYTE 40
// Address Length
#define SPIF_ADDR_SIZE_3_BYTES 3
#define SPIF_ADDR_SIZE_4_BYTES 4
// Erase Types Params
#define SPIF_BASIC_PARAM_ERASE_TYPE_1_BYTE 29
#define SPIF_BASIC_PARAM_ERASE_TYPE_2_BYTE 31
@ -88,7 +89,9 @@ enum spif_default_instructions {
SPIF_RSTEN = 0x66, // Reset Enable
SPIF_RST = 0x99, // Reset
SPIF_RDID = 0x9f, // Read Manufacturer and JDEC Device ID
SPIF_ULBPR = 0x98, // Clears all write-protection bits in the Block-Protection register
SPIF_ULBPR = 0x98, // Clears all write-protection bits in the Block-Protection register,
SPIF_4BEN = 0xB7, // Enable 4-byte address mode
SPIF_4BDIS = 0xE9, // Disable 4-byte address mode
};
// Mutex is used for some SPI Driver commands that must be done sequentially with no other commands in between
@ -211,6 +214,13 @@ int SPIFBlockDevice::init()
_dummy_and_mode_cycles = _write_dummy_and_mode_cycles;
_is_initialized = true;
if (_device_size_bytes > (1 << 24)) // Size is bigger than 16MB and thus address does not fit in 3 byte, switch to 4 byte address mode
{
tr_debug("Size is bigger than 16MB and thus address does not fit in 3 byte, switch to 4 byte address mode");
_spi_send_general_command(SPIF_4BEN, SPI_NO_ADDRESS_COMMAND, NULL, 0, NULL, 0);
_address_size = SPIF_ADDR_SIZE_4_BYTES;
}
exit_point:
_mutex->unlock();
@ -540,7 +550,7 @@ spif_bd_error SPIFBlockDevice::_spi_send_program_command(int prog_inst, const vo
spif_bd_error SPIFBlockDevice::_spi_send_erase_command(int erase_inst, bd_addr_t addr, bd_size_t size)
{
addr = (((int)addr) & 0x00FFF000);
addr = (((int)addr) & 0xFFFFF000);
_spi_send_general_command(erase_inst, addr, NULL, 0, NULL, 0);
return SPIF_BD_ERROR_OK;
}