Commit Graph

32 Commits

Author SHA1 Message Date
dpslwk f3636a7b46 stmhal: Enable SD card on L4 MCUs. 2016-06-29 14:29:01 +01:00
Damien George 87981fc517 stmhal/sdcard: Allow to do unaligned read-from/write-to SD card.
For example, the following code now works with a file on the SD card:

    f = open('test', 'rb') # test must be 1024 bytes or more in size
    f.seek(511)
    f.read(513)

Also works for writing.

Fixes issue #1863.
2016-05-13 14:45:40 +01:00
Damien George 88153dc56a stmhal/sdcard: Fix initialisation of DMA TX so that writes work.
Addresses issue #2034.
2016-05-06 10:53:25 +01:00
Tobias Badertscher e64032d6fd stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series.
The main thing is to change the DMA code in a way that the structure
DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4)
is no longer used outside of dma.c, as this structure only exists for the
F4 series.  Therefore I introduced a new structure (dma_descr_t) which
handles all DMA specific stuff for configuration.  Further the periphery
(spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-05-05 14:51:20 +01:00
Damien George e372e83b30 extmod/fsusermount: Move BP_IOCTL_xxx constants to fsusermount.h. 2016-02-10 23:40:35 +00:00
Damien George b33a770596 extmod/fsusermount: Support mounting of multiple block devices.
This patch adds support to fsusermount for multiple block devices
(instead of just one).  The maximum allowed is fixed at compile time by
the size of the fs_user_mount array accessed via MP_STATE_PORT, which
in turn is set by MICROPY_FATFS_VOLUMES.

With this patch, stmhal (which is still tightly coupled to fsusermount)
is also modified to support mounting multiple devices   And the flash and
SD card are now just two block devices that are mounted at start up if
they exist (and they have special native code to make them more
efficient).
2016-02-10 23:40:10 +00:00
Damien George 3770cd2e70 stmhal: Expose flash and SD card as proper objects with block protocol.
You can now create (singleton) objects representing the flash and SD
card, using:

    flash = pyb.Flash()
    sdcard = pyb.SDCard()

These objects provide the block protocol.
2016-02-10 23:40:10 +00:00
Damien George 401af50dc0 stmhal: Add pyb.irq_stats() to get statistics about IRQ calls.
Adds a lot of code, makes IRQs a bit less efficient, but is very useful
for debugging.  Usage: pyb.irq_stats() returns a memory view that can be
read and written, eg:

    list(pyb.irq_stats())
    pyb.irq_stats()[0]
    pyb.irq_stats()[0] = 0

The patch provides general IRQ_ENTER() and IRQ_EXIT() macros that can be
modified to provide further IRQ statistics if desired.
2015-12-22 21:00:20 +00:00
Damien George f4c17378b3 stmhal: Protect SD card DMA transactions against USB MSC contention.
Consider the following scenario: SD card is being read by pyboard; USB
irq comes in for MSC read request; SD card needs to be read from within
USB irq while SD read is already ongoing.  Such contention needs to be
avoided.

This patch provides a simple solution, to raise the irq priority above
that of the USB irq during SD DMA transfers.  Pyboard and PC can now
read from the SD card at the same time (well, reads are interleaved).
2015-12-04 11:39:21 +00:00
Damien George 9936aa3f87 stmhal: Save RAM and ROM by making SD DMA init structure const for tx/rx. 2015-11-24 15:44:16 +00:00
Dave Hylands 6edffd0df5 stmhal: Add dma support for sdcard.
This started out using IgorLektorovEpam work in PR #1389
and reworked it.
2015-11-24 09:37:25 +00:00
Dave Hylands 823a961ecc stmhal: Enable sdcard on STM32F7DISC board. 2015-10-30 12:05:14 +00:00
Paul Sokolovsky 1b586f3a73 py: Rename MP_BOOL() to mp_obj_new_bool() for consistency in naming. 2015-10-11 15:18:15 +03:00
Dave Hylands ea8bf81058 stmhal: Replace #include "stm32f4xx_hal.h" with #include STM32_HAL_H. 2015-07-30 00:38:25 +01:00
Damien George 7674da8057 stmhal: Remove some unnecessary declarations, purely for cleanup. 2015-03-20 22:27:34 +00:00
Damien George 4d77e1a034 py: Use m_{new,renew,del} consistently.
This is so all memory requests go through the same interface.
2015-02-27 09:34:51 +00:00
Damien George 2cf6dfa280 stmhal: Prefix includes with py/; remove need for -I../py. 2015-01-01 21:06:20 +00:00
Damien George 072bd07f17 stmhal: Add retry to SD card init.
This fixed an issue with a certain SD card sometimes not initialising
first time round.  See issue #822 for related, and thanks to
@iabdalkader for the idea.
2014-10-20 00:04:27 +01:00
Damien George 1d7fb82f0a stmhal: Change 64-bit arithmetic to 32-bit for SD card block addressing.
By measuring SD card addresses in blocks and not bytes, one can get away
with using 32-bit numbers.

This patch also uses proper atomic lock/unlock around SD card
read/write, adds SD.info() function, and gives error code for failed
read/writes.
2014-09-15 23:49:57 +01:00
Felix Domke 6ff42c54bb stmhal/sdcard.c: add pyb.SD.write 2014-09-15 22:34:16 +01:00
Dave Hylands 994bb4a839 Fix sdcard_power_on to not do anything if the card is already powered on. 2014-08-25 10:16:52 -07:00
Damien George 594699bc88 stmhal: Protect SD_WriteBlocks by IRQ disable/enable pair. 2014-07-07 07:29:06 +01:00
Dave Hylands 90ba80dc36 Disable IRQs around sdcard reads.
Once the code switches to using DMA, this can be removed.
2014-07-06 09:51:22 -07:00
Paul Sokolovsky 8139494e54 stmhal: Include mpconfig.h before all other includes.
It defines types used by all other headers.

Fixes #691.
2014-06-28 23:32:03 +03:00
Damien George 04b9147e15 Add license header to (almost) all files.
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00
Damien George d553be5982 build: Simplify build directory layout by putting all headers in genhdr.
Any generated headers go in $(BUILD)/genhdr/, and are #included as
'genhdr/xxx.h'.
2014-04-17 18:03:27 +01:00
Damien George df6567e634 Merge map.h into obj.h.
Pretty much everyone needs to include map.h, since it's such an integral
part of the Micro Python object implementation.  Thus, the definitions
are now in obj.h instead.  map.h is removed.
2014-03-30 13:54:02 +01:00
Damien George d17926db71 Rename rt_* to mp_*.
Mostly just a global search and replace.  Except rt_is_true which
becomes mp_obj_is_true.

Still would like to tidy up some of the names, but this will do for now.
2014-03-30 13:35:08 +01:00
Damien George 09d207785c stmhal: Unify naming of HW config; make SD detect configurable.
All board config macros now begin with MICROPY_HW_.

Renamed PYBv10 to PYBV10, since macros should be all uppercase.

Made SDCARD_DETECT configurable in mpconfigport.h, so that the SD
detect pin can be easily configured.
2014-03-30 12:30:35 +01:00
Damien George 9b196cddab Remove mp_obj_type_t.methods entry and use .locals_dict instead.
Originally, .methods was used for methods in a ROM class, and
locals_dict for methods in a user-created class.  That distinction is
unnecessary, and we can use locals_dict for ROM classes now that we have
ROMable maps.

This removes an entry in the bloated mp_obj_type_t struct, saving a word
for each ROM object and each RAM object.  ROM objects that have a
methods table (now a locals_dict) need an extra word in total (removed
the methods pointer (1 word), no longer need the sentinel (2 words), but
now need an mp_obj_dict_t wrapper (4 words)).  But RAM objects save a
word because they never used the methods entry.

Overall the ROM usage is down by a few hundred bytes, and RAM usage is
down 1 word per user-defined type/class.

There is less code (no need to check 2 tables), and now consistent with
the way ROM modules have their tables initialised.

Efficiency is very close to equivaluent.
2014-03-26 21:47:19 +00:00
Damien George c12b2213c1 Change mp_method_t.name from const char * to qstr.
Addresses issue #377.
2014-03-26 20:15:40 +00:00
Damien George fb431bf556 stmhal: Add SD card support.
Just low-level read/write support.  No filesystem yet.
2014-03-17 13:03:41 +00:00