openmano-mpy/drivers/memory, branch master MicroPython source and hardware configuration for OpenMano drivers/memory/spiflash: Add MICROPY_HW_SPIFLASH_ENABLE_CACHE option. 2020-12-18T02:39:32+00:00 Damien George 2020-12-17T05:59:54+00:00 e43a74a4db484ac1bfef191a8aa19b58b519efc6 This only needs to be enabled if a board uses FAT FS on external SPI flash. When disabled (and using external SPI flash) 4k of RAM can be saved. Signed-off-by: Damien George <damien@micropython.org> 
This only needs to be enabled if a board uses FAT FS on external SPI flash.
When disabled (and using external SPI flash) 4k of RAM can be saved.

Signed-off-by: Damien George <damien@micropython.org>
drivers, stm32: Support SPI/QSPI flash chips over 16MB. 2020-01-30T02:18:38+00:00 Andrew Leech 2020-01-28T03:59:05+00:00 30501d3f54fa642770faefa117b4c39d95aff549 With a SPI flash that has more than 16MB, 32-bit addressing is required rather than the standard 24-bit. This commit adds support for 32-bit addressing so that the SPI flash commands (read/write/erase) are selected automatically depending on the size of the address being used at each operation. 
With a SPI flash that has more than 16MB, 32-bit addressing is required
rather than the standard 24-bit.  This commit adds support for 32-bit
addressing so that the SPI flash commands (read/write/erase) are selected
automatically depending on the size of the address being used at each
operation.
drivers/memory/spiflash: Add support to put SPI flash in sleep mode. 2019-07-02T15:27:33+00:00 Damien George 2019-07-02T15:03:25+00:00 8cde5faedd63ea1b21b7adef87e50e6a036c7e5a 






drivers/memory/spiflash: Rework wait_sr to fix uninit'd variable 'sr'.
2019-03-08T12:11:13+00:00

Andrew Leech

2019-01-29T04:20:01+00:00

2ed2ec1711b13dd9a28bdc29ce8cba13ca7d503f












drivers/memory/spiflash: Add functions for direct erase/read/write.
2018-06-14T06:52:56+00:00

Damien George

2018-06-07T05:39:46+00:00

b78ca32476ba666412a9ec44a5453094fbf0dbd7

These new API functions do not use the cache.





These new API functions do not use the cache.







drivers/memory/spiflash: Rename functions to indicate they use cache.
2018-06-14T06:52:56+00:00

Damien George

2018-06-07T05:36:27+00:00

cc5a94044a670f5acccefa8e04a38e81d882e087

This patch renames the existing SPI flash API functions to reflect the fact
that the go through the cache:

    mp_spiflash_flush -> mp_spiflash_cache_flush
    mp_spiflash_read  -> mp_spiflash_cached_read
    mp_spiflash_write -> mp_spiflash_cached_write





This patch renames the existing SPI flash API functions to reflect the fact
that the go through the cache:

    mp_spiflash_flush -> mp_spiflash_cache_flush
    mp_spiflash_read  -> mp_spiflash_cached_read
    mp_spiflash_write -> mp_spiflash_cached_write







drivers/memory/spiflash: Move cache buffer to user-provided config.
2018-06-14T06:52:56+00:00

Damien George

2018-06-07T04:09:10+00:00

86fe73beb99686ea15787f0603ad6f10a642054c

This patch removes the global cache variables from the SPI flash driver and
now requires the user to provide the cache memory themselves, via the SPI
flash configuration struct.  This allows to either have a shared cache for
multiple SPI flash devices (by sharing a mp_spiflash_cache_t struct), or
have a single cache per device (or a mix of these options).

To configure the cache use:

    mp_spiflash_cache_t spi_bdev_cache;

    const mp_spiflash_config_t spiflash_config =
        // any bus options
        .cache = &spi_bdev_cache,
    };





This patch removes the global cache variables from the SPI flash driver and
now requires the user to provide the cache memory themselves, via the SPI
flash configuration struct.  This allows to either have a shared cache for
multiple SPI flash devices (by sharing a mp_spiflash_cache_t struct), or
have a single cache per device (or a mix of these options).

To configure the cache use:

    mp_spiflash_cache_t spi_bdev_cache;

    const mp_spiflash_config_t spiflash_config =
        // any bus options
        .cache = &spi_bdev_cache,
    };







drivers/memory/spiflash: Fix bugs in and clean up read/write functions.
2018-03-13T03:13:30+00:00

Damien George

2018-03-13T03:13:30+00:00

bdc875e602f687bf0fb28c3a18565ffec4157f59

mp_spiflash_read had a bug in it where "dest" and "addr" were incremented
twice for a certain special case.  This was fixed, which then allowed the
function to be simplified to reduce code size.

mp_spiflash_write had a bug in it where "src" was not incremented correctly
for the case where the data to be written included the caching buffer as
well as some bytes after this buffer.  This was fixed and the resulting
code simplified.





mp_spiflash_read had a bug in it where "dest" and "addr" were incremented
twice for a certain special case.  This was fixed, which then allowed the
function to be simplified to reduce code size.

mp_spiflash_write had a bug in it where "src" was not incremented correctly
for the case where the data to be written included the caching buffer as
well as some bytes after this buffer.  This was fixed and the resulting
code simplified.







drivers/memory/spiflash: Fix setting of QE bit in flash register.
2018-03-11T00:25:38+00:00

Damien George

2018-03-11T00:25:38+00:00

cc34b087f0fe121afb03dcfe99180737ab925372












drivers/memory/spiflash: Change to use low-level SPI object not uPy one.
2018-03-09T13:59:43+00:00

Damien George

2018-03-09T06:32:28+00:00

a739b35a9618c2dd2d25c9ef4d076eeffddbb399

This patch alters the SPI-flash memory driver so that it uses the new
low-level C SPI protocol (from drivers/bus/spi.h) instead of the uPy SPI
protocol (from extmod/machine_spi.h).  This allows the SPI-flash driver to
be used independently from the uPy runtime.





This patch alters the SPI-flash memory driver so that it uses the new
low-level C SPI protocol (from drivers/bus/spi.h) instead of the uPy SPI
protocol (from extmod/machine_spi.h).  This allows the SPI-flash driver to
be used independently from the uPy runtime.