Commit Graph

46 Commits

Author SHA1 Message Date
Damien George 53521152a8 stmhal: L4: Modify uart.c to support L4 MCU.
L4 does not have UART6, and has similar registers to the F7.

Original patch was authored by Tobias Badertscher / @tobbad, but it was
reworked to split UART edits from USB edits.
2016-04-17 12:01:05 +01:00
Peter Hinch 22cbcd55f0 stmhal: Properly handle RTS/CTS flow control for buf/unbuf transfers.
Fixes issues #1912 and #1913.  UART documentation is also updated.
2016-04-13 08:42:32 +01:00
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
Damien George 36ccdc952c stmhal: Make uart init use struct instead of array for parsing args.
This makes it much easier to understand which arg is which, less error
prone, and simpler to add a new arg.
2015-12-12 15:55:51 +00:00
Ryan Shaw c03dd3b2f9 stmhal: Fix uart off by 1 circular buffer size. 2015-12-04 22:20:47 +00:00
Damien George 0d9b450701 stmhal: Make uart.write() function correctly for timeout=0.
In non-blocking mode (timeout=0), uart.write() can now transmit all of its
data without raising an exception.  uart.read() also works correctly in
this mode.

As part of this patch, timout_char now has a minimum value which is long
enough to transfer 1 character.

Addresses issue #1533.
2015-11-30 17:29:52 +00:00
Ryan Shaw f99491cbf7 stmhal: uart.any() function now returns number of bytes available. 2015-11-30 13:07:20 +00:00
Dave Hylands 364bb61df3 stmhal: Allow make DEBUG=1 to build 2015-11-26 00:04:34 +00:00
Dave Curtis 32b3549cce stmhal: Add symbolic #defines for interrupt levels in irq.h. 2015-11-01 23:23:39 +00:00
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
Paul Sokolovsky bedab235f9 stmhal/uart: If char is not received within timeout, return EAGAIN error.
Instead of return 0, which means EOF. There's no good way to detect EOF on
continuously active bus like UART, and treat timeout as just temporary
unvailability of data. .read() method of UART object will return None in
this case (instead of 0, which again measn EOF). This is fully compliant
with unix port.
2015-10-20 00:27:07 +03:00
Dave Hylands 8f59bacb92 stamhal: Add definitions for MCU_SERIES_F4 and MCU_SERIES_F7 2015-08-07 08:52:42 +01:00
Damien George 751485fe6b stmhal: Add support for USART1 and conditional pins in make-pins.py.
Thanks to Dave Hylands for the patch.
2015-08-03 00:23:47 +01:00
Damien George a632037866 stmhal: Add better support for UART having Tx and Rx on different ports.
Thanks to Dave Hylands for the patch.
2015-08-03 00:22:16 +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
Dave Hylands 3ac2d06bd1 stmhal: Add support for UART5
I tested this on my CERB40 board and it seems to be working fine.
2015-06-01 00:14:46 +01:00
Damien George 1775b65e07 stmhal: Remove PYBVxx defines and use config vars for UART/CAN names.
Now all stmhal-based boards can name their peripherals (if they want) to
any string.
2015-05-27 16:51:04 +01:00
Eero af Heurlin 2378be4e93 stmhal: Allow to configure UART pins completely via mpconfigboard.h. 2015-05-03 13:48:26 +01:00
Damien George 8892f71dd0 stmhal: Exclude code for UARTs that don't exist in hardware. 2015-04-18 21:40:58 +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 77fc276c08 stmhal: For UART, check that baudrate is within 5% of desired value.
Also includes documentation about minimum baudrate.

Addresses issue #1090.
2015-02-22 00:26:49 +00:00
Damien George baafb290ad stmhal: Add uart.sendbreak() method, to send a break condition. 2015-02-13 19:04:24 +00:00
Damien George 3b51b3e90f stmhal: Collect all root pointers together in 1 place.
A GC in stmhal port now only scans true root pointers, not entire BSS.
This reduces base GC time from 1700ms to 900ms.
2015-01-07 23:38:50 +00:00
Damien George 2cf6dfa280 stmhal: Prefix includes with py/; remove need for -I../py. 2015-01-01 21:06:20 +00:00
Paul Sokolovsky f4a6a577ab stream: Convert .ioctl() to take fixed number of args.
This is more efficient, as allows to use register calling convention.
If needed, a structure pointer can be passed as argument to pass more
data.
2014-11-17 00:16:14 +02:00
Damien George 4029f51842 stmhal: Fix UART so bits counts number of data bits, not incl parity.
Addresses issue #950.
2014-10-31 20:28:10 +00:00
Damien George 4ef67d30f1 stmhal: Implement support for RTS/CTS hardware flow control in UART.
This is experimental support.  API is subject to changes.  RTS/CTS
available on UART(2) and UART(3) only.  Use as:

    uart = pyb.UART(2, 9600, flow=pyb.UART.RTS | pyb.UART.CTS)
2014-10-31 00:40:57 +00:00
Damien George e294bee45b stmhal: Use stream's readinto. 2014-10-24 11:19:01 +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 481d714bd5 stmhal: Overhaul UART class to use read/write, and improve it.
UART object now uses a stream-like interface: read, readall, readline,
readinto, readchar, write, writechar.

Timeouts are configured when the UART object is initialised, using
timeout and timeout_char keyword args.

The object includes optional read buffering, using interrupts.  You can set
the buffer size dynamically using read_buf_len keyword arg.  A size of 0
disables buffering.
2014-10-21 22:15:20 +01:00
Damien George 5fc6aa8100 stmhal: Set is_enabled=false when creating UART object; fix doc typo. 2014-10-02 17:31:37 +01:00
Damien George 5c00757a5c stmhal: uart ioctl uses EINVAL, and checks TXE bit for write-ability. 2014-09-07 20:57:18 +01:00
Damien George e2a618615d stmhal: Fix modselect so non-hashable objects can be polled. 2014-09-07 20:41:09 +01:00
Damien George a2f55fe12b stmhal: Add polling ability to UART object. 2014-09-07 20:40:32 +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
Damien George 951ed9d02f stmhal: Fix REPL printing by cooking output sent to stdout_obj.
Recent changes to builtin print meant that print was printing to the
mp_sys_stdout_obj, which was sending data raw to the USB CDC device.
The data should be cooked so that \n turns into \r\n.
2014-07-20 13:57:43 +01:00
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
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 7533700393 stmhal: Rename USART to UART.
It's really a UART because there is no external clock line (and hence no
synchronous ability, at least in the implementation of this module).
USART should be reserved for a module that has "S"ynchronous capabilities.

Also, UART is shorter and easier to type :)
2014-04-21 12:03:09 +01:00