Commit Graph

68 Commits

Author SHA1 Message Date
Damien George 0986675451 stmhal: Convert all module and method tables to use MP_ROM macros. 2017-05-06 17:03:40 +10:00
Damien George 2460888c74 stmhal/i2c: Clean the cache so that I2C DMA works on F7 MCUs. 2017-03-31 12:56:18 +11:00
Damien George aa7de3ff67 stmhal: Move L4/F7 I2C timing constants from mpconfigboard.h to i2c.c.
Such constants are MCU specific so shouldn't be specified in the board
config file (else it leads to too much duplication of code).

This patch also adds I2C timing values for the F767/F769 for 100k, 400k
and 1MHz I2C bus frequencies.
2017-03-31 12:53:56 +11:00
Damien George 6ab5512132 stmhal: Use mp_hal_delay_ms instead of HAL_Delay. 2017-03-02 15:02:57 +11:00
Paul Sokolovsky eac22e29a5 all: Consistently update signatures of .make_new and .call methods.
Otherwise, they serve reoccurring source of copy-paste mistakes and
breaking nanbox build.
2017-01-04 16:10:42 +03:00
Damien George 49dcc253e3 stmhal/i2c: Expose the pyb_i2c_obj_t struct and some relevant functions.
So they can be used by other parts of the code.
2016-11-25 16:30:51 +11:00
Damien George 652ca2017d stmhal/i2c: Add support for I2C4 hardware block on F7 MCUs. 2016-11-25 11:21:18 +11:00
Damien George a3320e7811 stmhal/i2c: Remove use of legacy I2C_NOSTRETCH_DISABLED option.
In the new HAL this is renamed to I2C_NOSTRETCH_DISABLE.
2016-11-22 17:40:50 +11:00
Damien George 21d82421cd stmhal/i2c: Use the HAL's I2C IRQ handler for F7 and L4 MCUs.
The custom IRQ handler only works for F4 MCUs, which have the SR1
register.
2016-11-21 16:12:09 +11:00
Krzysztof Blazewicz 8fa0733647 stmhal/i2c: provide custom IRQ handlers
Use custom handlers providing minimal required functionality
because those provided by ST increase code size by almost 2 KiB.
2016-11-16 12:43:27 +01:00
Krzysztof Blazewicz 0280b2c1b1 stmhal/i2c: handle I2C IRQs
This is required by HAL Driver for error handling since v1.5.0
2016-11-16 12:43:27 +01:00
Damien George 1375c52772 stmhal: Rename mp_hal_pin_set_af to _config_alt, to simplify alt config.
This way the caller doesn't need to initialise a big GPIO_InitTypeDef
struct, and HAL_GPIO_Init is no longer called.
2016-11-11 17:53:45 +11:00
Damien George 74fb5d6932 stmhal/i2c: Reset the I2C peripheral if there was an error on the bus.
If an I2C send/recv fails then the peripheral is now checked to see if
it's in a "stuck" state waiting for the stop bit, and if so then it is
reset so that the next I2C transaction can proceed.

This patch also de-inits the I2C peripheral in the init() method, before
init'ing it again.
2016-11-11 17:38:52 +11:00
Damien George c4e58eaa98 stmhal/i2c: Add option to I2C to enable/disable use of DMA transfers.
New keyword option in constructor and init() method is "dma=<bool>".
DMA is now disabled by default for I2C transfers because it currently does
not handle I2C bus errors very well (eg if slave device doesn't ACK or
NACK correctly during a transfer).
2016-11-11 17:36:19 +11:00
Damien George d49d81b167 stmhal: Refactor pin usage to use mp_hal_pin API. 2016-10-18 14:34:08 +11:00
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 70ff7350e7 stmhal, cc3200: Change i2c.scan() method to scan addresses 0x08-0x77.
A standard I2C address is 7 bits but addresses 0b0000xxx and 0b1111xxx
are reserved.  The scan() method is changed to reflect this, along with
the docs.
2016-05-02 11:15:36 +01:00
Dave Hylands 7bb501ef9f stmhal: Add a function for setting the pin alternate function
mp_hal_gpio_set_af will search for a given function and unit
and set the alternate function to the alternate function index
found.
2016-02-10 21:20:14 -08:00
Damien George 5b3f0b7f39 py: Change first arg of type.make_new from mp_obj_t to mp_obj_type_t*.
The first argument to the type.make_new method is naturally a uPy type,
and all uses of this argument cast it directly to a pointer to a type
structure.  So it makes sense to just have it a pointer to a type from
the very beginning (and a const pointer at that).  This patch makes
such a change, and removes all unnecessary casting to/from mp_obj_t.
2016-01-11 00:49:27 +00:00
Dave Hylands 0077958ad0 stmhal: Put all DMA channel & stream definitions in dma.h 2015-12-02 22:55:57 +00:00
Paul Sokolovsky 16d42368a6 stmhal/modmachine: Initial attempt to add I2C & SPI classes.
In new hardware API, these classes implement master modes of interfaces,
and "mode" parameter is not accepted. Trying to implement new HW API
in terms of older pyb module leaves variuos corner cases:

In new HW API, I2C(1) means "I2C #1 in master mode" (? depends on
interpretation), while in old API, it means "I2C #1, with no settings
changes".

For I2C class, it's easy to make mode optional, because that's last
positional param, but for SPI, there's "baudrate" after it (which
is inconsistent with I2C, which requires "baudrate" to be kwonly-arg).
2015-11-14 16:14:08 +02:00
Damien George 731f359292 all: Add py/mphal.h and use it in all ports.
py/mphal.h contains declarations for generic mp_hal_XXX functions, such
as stdio and delay/ticks, which ports should provide definitions for.  A
port will also provide mphalport.h with further HAL declarations.
2015-10-31 19:14:30 +03:00
Dave Hylands 34fe5a30c6 stmhal: Enable I2C support for F7 MCUs. 2015-08-05 23:38:24 +01:00
Damien George 0851751615 stmhal: Factor GPIO clock enable logic into mp_hal_gpio_clock_enable.
Extracted GPIO clock enable logic into mp_hal_gpio_clock_enable
and called from anyplace which might need to use GPIO functions
on ports other than A-D.

Thanks to Dave Hylands for the patch.
2015-08-03 00:14:48 +01:00
Dave Hylands 92d4b51ad5 stmhal: Add STM32F7DISC and associated changes. 2015-07-30 00:38:32 +01:00
blmorris c5175526dd stmhal/dma.c: Modify dma_init() to accept init struct as an argument
This removes hard-coded DMA init params from dma_init(), instead defining
these parameters in a DMA_InitTypeDef struct that gets passed as an
argument to dma_init()
This makes dma_init more generic so it can be used for I2S and SD Card,
which require different initialization parameters.
2015-06-24 17:48:52 +01:00
Damien George 6e1dfb0d1a stmhal: Reorganise code for parsing keyword args in I2C methods.
To make it the same as SPI and UART.
2015-06-22 23:46:22 +01:00
Damien George 76285469d3 stmhal: Make I2C use DMA when interrupts are enabled. 2015-06-10 14:01:44 +01:00
Damien George 17d9b5006d stmhal: Fix off-by-one error when checking for valid I2C and SPI bus. 2015-05-28 11:05:44 +01:00
Damien George 0e6f5e08e1 stmhal: Allow to name I2C busses, and give them names for pyboard. 2015-05-27 17:16:26 +01:00
Damien George d15fe5a6b3 stmhal: Make I2C busses and their pins configurable in mpconfigboard.h. 2015-04-18 21:40:59 +01:00
Damien George 7f9d1d6ab9 py: Overhaul and simplify printf/pfenv mechanism.
Previous to this patch the printing mechanism was a bit of a tangled
mess.  This patch attempts to consolidate printing into one interface.

All (non-debug) printing now uses the mp_print* family of functions,
mainly mp_printf.  All these functions take an mp_print_t structure as
their first argument, and this structure defines the printing backend
through the "print_strn" function of said structure.

Printing from the uPy core can reach the platform-defined print code via
two paths: either through mp_sys_stdout_obj (defined pert port) in
conjunction with mp_stream_write; or through the mp_plat_print structure
which uses the MP_PLAT_PRINT_STRN macro to define how string are printed
on the platform.  The former is only used when MICROPY_PY_IO is defined.

With this new scheme printing is generally more efficient (less layers
to go through, less arguments to pass), and, given an mp_print_t*
structure, one can call mp_print_str for efficiency instead of
mp_printf("%s", ...).  Code size is also reduced by around 200 bytes on
Thumb2 archs.
2015-04-16 14:30:16 +00:00
Damien George 05005f679e py: Remove mp_obj_str_builder and use vstr instead.
With this patch str/bytes construction is streamlined.  Always use a
vstr to build a str/bytes object.  If the size is known beforehand then
use vstr_init_len to allocate only required memory.  Otherwise use
vstr_init and the vstr will grow as needed.  Then use
mp_obj_new_str_from_vstr to create a str/bytes object using the vstr
memory.

Saves code ROM: 68 bytes on stmhal, 108 bytes on bare-arm, and 336 bytes
on unix x64.
2015-01-21 23:18:02 +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 185cb0d943 stmhal: Use OSError with POSIX error code for HAL errors.
Addresses issue #921.
2014-10-23 14:25:32 +01:00
Damien George ecc88e949c Change some parts of the core API to use mp_uint_t instead of uint/int.
Addressing issue #50, still some way to go yet.
2014-08-30 00:35:11 +01:00
blmorris 86f0b31bcf Change boolean 'use_16bit_addr' to int 'addr_size', can be either 8 or 16 bits, default value is 8
to maintain compatibility with existing code.
2014-07-21 22:45:04 -04:00
blmorris 847a6b30b1 Incorporate stylistic changes suggested by @dhylands 2014-07-11 21:18:09 -04:00
blmorris e687fdbcbc Add keyword argument 'memaddr_use_16b' to i2c.mem_read and mem_write methods
to allow these methods to transmit 16 bit addresses to an i2c device
Add 'memaddr_use_16b' to qstrdefsport.h
2014-07-11 16:14:01 -04:00
Damien George 40f3c02682 Rename machine_(u)int_t to mp_(u)int_t.
See discussion in issue #50.
2014-07-03 13:25:24 +01:00
Emmanuel Blot f6932d6506 Prefix ARRAY_SIZE with micropython prefix MP_ 2014-06-19 18:54:34 +02:00
Damien George 5fc400ccdb stmhal: Document physical pins for SPI, I2C, UART busses. 2014-05-04 14:28:11 +01:00
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 baa2afbb58 stmhal: Fix typos in class documentation. 2014-05-03 16:42:27 +01:00
Paul Sokolovsky 9b71b16a94 unix,stmhal: Make "mpconfig.h" be first included, as other headers depend on it. 2014-05-02 18:08:16 +03:00
Damien George 8d09640b22 stmhal: Add documentation in comments, and script to generate HTML.
Decided to write own script to pull documentation from comments in C code.
Style for writing auto generated documentation is: start line with ///
and then use standard markdown to write the comment.  Keywords
recognised by the scraper begin with backslash.  See code for examples.

Running: python gendoc.py modpyb.c accel.c adc.c dac.c extint.c i2c.c
led.c pin.c rng.c servo.c spi.c uart.c usrsw.c, will generate a HTML
structure in gendoc-out/.

gendoc.py is crude but functional.  Needed something quick, and this was
it.
2014-04-29 22:55:34 +01:00
Damien George dbc81df5d4 Simplify names for argcheck.c / arg parsing. 2014-04-26 11:19:17 +01:00
Damien George 6d3c5e4301 Add ARRAY_SIZE macro, and use it where possible. 2014-04-26 10:47:29 +01:00
Damien George 34f01c2ca1 stmhal: Add some documentation to I2C, SPI and USART modules. 2014-04-21 01:59:43 +01:00
Damien George eb8bdf4df3 stmhal, SPI and I2C: Improvements to functionality and consistency. 2014-04-21 00:10:04 +01:00