ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Favor QSPI Bus mode 1-4-4 over QPI 

QPI may have slightly better performance, but it is not supported by all targets.
It requires register setup between each Read and Program/Erase commands,
which might damage the overall performance eventually.
pull/9057/head
offirko 2018-12-11 16:20:28 +02:00
parent 40e13cf28c
commit b79c64ec53
2 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
components/storage/blockdevice/COMPONENT_QSPIF/QSPIFBlockDevice.cpp
View File

@ -421,7 +421,7 @@ int QSPIFBlockDevice::erase(bd_addr_t addr, bd_size_t in_size)
if (_set_write_enable() != 0) {
tr_error("QSPI Erase Device not ready - failed");
erase_failed = true;
status = QSPIF_BD_ERROR_READY_FAILED;
status = QSPIF_BD_ERROR_WREN_FAILED;
goto exit_point;
}
@ -1024,12 +1024,9 @@ int QSPIFBlockDevice::_sfdp_detect_best_bus_read_mode(uint8_t *basic_param_table
//_inst_width = QSPI_CFG_BUS_QUAD;
_address_width = QSPI_CFG_BUS_QUAD;
_data_width = QSPI_CFG_BUS_QUAD;
break;
}
}
is_qpi_mode = false;
examined_byte = basic_param_table_ptr[QSPIF_BASIC_PARAM_TABLE_FAST_READ_SUPPORT_BYTE];
if (examined_byte & 0x40) {
// Fast Read 1-4-4 Supported

4
components/storage/blockdevice/COMPONENT_QSPIF/TESTS/block_device/qspif/main.cpp
View File

@ -48,6 +48,10 @@ void basic_erase_program_read_test(QSPIFBlockDevice &blockD, bd_size_t block_siz
{
int err = 0;
_mutex->lock();
static unsigned block_seed = 1;
srand(block_seed++);
// Find a random block
bd_addr_t block = (rand() * block_size) % blockD.size();