Commit Graph

1124 Commits

Author SHA1 Message Date
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 00b1a3e4d2 stmhal/dma: Don't include SDMMC2 struct if SDMMC2 is not available.
Not all F7 MCUs have SDMMC2.
2017-03-30 18:24:31 +11:00
Damien George 81e19eaf05 stmhal/boards: Remove F769 alt function table, it's same as for F767. 2017-03-30 18:00:31 +11:00
Damien George 41cbe8045e stmhal/boards/STM32F769DISC: Fix user switch pin, and document stlink. 2017-03-30 17:59:36 +11:00
Damien George c74fa7f58e stmhal/boards/STM32F769DISC: Get SD card working by using SDMMC2. 2017-03-30 17:58:45 +11:00
Damien George 9818c0db43 stmhal/boards: Update F76x alternate function table to add SDMMC2. 2017-03-30 17:57:18 +11:00
Damien George 7876e54aa5 stmhal/sdcard: Add support for SDMMC2 on F7 MCUs.
By default the SDIO (F4) or SDMMC1 (L4, F7) is used as the SD card
peripheral, but if a board config defines MICROPY_HW_SDMMC2_CK and other
pins then the SD card driver will use SDMMC2.
2017-03-30 17:55:21 +11:00
Damien George 43defc9e98 stmhal: Support SDMMC alternate functions in pin generation. 2017-03-30 17:52:20 +11:00
Damien George 22e2f4a0e8 stmhal/spi: Increase SPI transfer timeout, proportional to num bytes.
With the existing timeout of 100ms the transfer would end prematurely if
the baudrate was low and the number of bytes to send was high.  This patch
fixes the problem by making the timeout proportional to the number of bytes
that are being transferred.
2017-03-29 16:02:43 +11:00
Damien George a9c8db07bd stmhal: Update for changes to mp_obj_str_get_data. 2017-03-29 12:56:45 +11:00
Damien George ca06fac4a1 stmhal: Update to use size_t for tuple/list accessors. 2017-03-29 12:56:45 +11:00
Damien George 7b1804c582 stmhal/dma: Fix reinitialisation of DMA on F7 MCUs, following F4. 2017-03-28 12:59:02 +11:00
Damien George e997bb6328 stmhal/hal: For F7 MCUs, expose DMA_CalcBaseAndBitshift function.
It's needed by the DMA driver to do an efficient reinitialisation.  This
patch follows what is done in the F4 HAL.
2017-03-28 12:56:18 +11:00
Damien George ff927cb106 stmhal/spi: Clean and/or invalidate D-cache before SPI DMA transfers.
On MCUs with a cache (eg F7) this must be done or else the SPI data that is
transferred is incorrect.
2017-03-28 12:54:01 +11:00
Damien George 9a1b3da158 stmhal/board: Fix existing and add more pin defs for NUCLEO_F767ZI. 2017-03-28 12:42:23 +11:00
Damien George 8b36664e17 stmhal/boards: Fix alt-func config for PA5 of STM32F767. 2017-03-28 12:41:55 +11:00
Damien George 125eae1ba3 py/modbuiltins: For round() builtin use nearbyint instead of round.
The C nearbyint function has exactly the semantics that Python's round()
requires, whereas C's round() requires extra steps to handle rounding of
numbers half way between integers.  So using nearbyint reduces code size
and potentially eliminates any source of errors in the handling of half-way
numbers.

Also, bare-metal implementations of nearbyint can be more efficient than
round, so further code size is saved (and efficiency improved).

nearbyint is provided in the C99 standard so it should be available on all
supported platforms.
2017-03-24 11:00:45 +11:00
Krzysztof Blazewicz 75589272ef all/Makefile: Remove -ansi from GCC flags, its ignored anyway.
The -ansi flag is used for C dialect selection and it is equivalent to -std=c90.
Because it goes right before -std=gnu99 it is ignored as for conflicting flags
GCC always uses the last one.
2017-03-23 15:32:12 +11:00
Damien George 3509e2d307 stmhal/systick: Make mp_hal_delay_ms release the GIL when sleeping. 2017-03-22 12:54:43 +11:00
Damien George 96c35d0ac4 stmhal/pybthread: Allow interrupts to work during lock/unlock of mutex.
When locking/unlocking a mutex we only need to protect against a thread
switch, not general interrupts.
2017-03-22 12:44:04 +11:00
Damien George 080210ddc6 stmhal/irq: Shift IRQ priorities of TIM and EXTINT to be above PENDSV.
This way, Timer and ExtInt callbacks can interrupt the low-priority
pendsv handler (for example thread switching).
2017-03-22 12:39:32 +11:00
Damien George ebbaf7ee57 stmhal/pendsv: Disable interrupts during a thread switch.
We can actually handle interrupts during a thread switch (because we always
have a valid stack), but only if those interrupts don't access any of the
thread state (because the state may not correspond to the stack pointer).
So to be on the safe side we disable interrupts during the very short
period of the thread state+stack switch.
2017-03-20 18:56:46 +11:00
Damien George a5159edc20 stmhal: Enable micropython.schedule().
ExtInt, Timer and CAN IRQ callbacks are made to work with the scheduler.
They are still hard IRQs by default, but one can now call
micropython.schedule within the hard IRQ to schedule a soft callback.
2017-03-20 15:20:26 +11:00
Damien George 12d0731b91 extmod/vfs_fat: Remove obsolete and unused str/len members. 2017-03-10 19:09:42 +11:00
Damien George 8236d18338 stmhal/main: Allocate flash's VFS struct on the heap to trace root ptrs. 2017-03-10 19:02:20 +11:00
Damien George 4351d16e62 stmhal/mphalport: Get ticks_cpu() working on F7 MCUs. 2017-03-10 14:58:26 +11:00
Damien George 4f3c1b3fc1 stmhal/modnwcc3k: Add include for mp_hal_delay_ms. 2017-03-02 16:17:34 +11:00
Damien George 78185e6a6c stmhal/modpyb: Use utime ticks ms/us functions instead of custom ones. 2017-03-02 15:43:14 +11:00
Damien George 89738e8240 stmhal: Rename sys_tick ticks/delay functions to corresp. mp_hal ones.
The renames are:
HAL_Delay -> mp_hal_delay_ms
sys_tick_udelay -> mp_hal_delay_us
sys_tick_get_microseconds -> mp_hal_ticks_us

And mp_hal_ticks_ms is added to provide the full set of timing functions.

Also, a separate HAL_Delay function is added which differs slightly from
mp_hal_delay_ms and is intended for use only by the ST HAL functions.
2017-03-02 15:32:32 +11:00
Damien George 6ab5512132 stmhal: Use mp_hal_delay_ms instead of HAL_Delay. 2017-03-02 15:02:57 +11:00
Damien George c9b0f0b248 stmhal/main: Remove unnecessary header includes. 2017-02-17 13:07:42 +11:00
Damien George ae8d867586 py: Add iter_buf to getiter type method.
Allows to iterate over the following without allocating on the heap:
- tuple
- list
- string, bytes
- bytearray, array
- dict (not dict.keys, dict.values, dict.items)
- set, frozenset

Allows to call the following without heap memory:
- all, any, min, max, sum

TODO: still need to allocate stack memory in bytecode for iter_buf.
2017-02-16 18:38:06 +11:00
Damien George e5cc681cb1 stmhal: Use generic interrupt char code. 2017-02-15 16:39:30 +11:00
Damien George 05a4859585 stmhal: Implement a proper thread scheduler.
This patch changes the threading implementation from simple round-robin
with busy waits on mutexs, to proper scheduling whereby threads that are
waiting on a mutex are only scheduled when the mutex becomes available.
2017-02-15 13:28:48 +11:00
Johannes Wågen f92f7dd2bc stmhal/boards: For STM32F411DISC, change I2C pin according to datasheet.
The pin had to be changed to get the I2C sensors on board to work.
2017-02-13 11:32:27 +11:00
Damien George 7ae9bee790 stmhal/Makefile: Drop use of -mabi=aapcs-linux; link libgcc by default.
The aapcs-linux ABI is not required, instead the default aapcs ABI is
enough.  And using the default ABI means that the provided libgcc will now
link with the firmware without warnings about variable vs fixed enums.

Although the binary size increases by about 1k, RAM usage is slightly
decreased.  And libgcc may prove useful in the future for things like
long-long division.
2017-02-08 11:50:22 +11:00
Damien George 9779c99317 stmhal: Add ability to skip booting from SD card via /flash/SKIPSD file. 2017-02-07 12:35:39 +11:00
Damien George 8400351d5a stmhal: Use MICROPY_EVENT_POLL_HOOK instead of __WFI where appropriate. 2017-02-06 15:10:03 +11:00
Damien George 27c149efe0 stmhal: Add pyb.fault_debug() function, to control hard-fault behaviour.
This new function controls what happens on a hard-fault:
- debugging disabled: board will do a reset
- debugging enabled: board will print registers and stack and flash LEDs

The default is disabled, ie to do a reset.  This is different to previous
behaviour which flashed the LEDs and waited indefinitely.
2017-02-06 13:22:17 +11:00
Damien George bffda45154 stmhal: On HardFault, print stack pointer and do a stack dump. 2017-02-06 13:22:17 +11:00
Damien George 904732cdc9 stmhal/mpconfigport.h: Enable MICROPY_PY_BUILTINS_POW3 option. 2017-02-03 12:39:33 +11:00
Damien George 8e00844929 stmhal: Fix build issue when MICROPY_PY_THREAD is disabled. 2017-01-31 19:52:50 +11:00
Damien George 00e7176624 stmhal/main: Use _estack value to initialise stack extents. 2017-01-31 18:43:46 +11:00
Damien George 882ec01e42 stmhal: Initial implementation of multithreading, currently disabled.
This patch brings the _thread module to stmhal/pyboard.  There is a very
simple round-robin thread scheduler, which is disabled if there is only
one thread (for efficiency when threading is not used).

The scheduler currently switches threads at a rate of 250Hz using the
systick timer and the pend-SV interrupt.

The GIL is disabled so one must be careful to use lock objects to prevent
concurrent access of objects.

The threading is disabled by default, one can enabled it with the config
option MICROPY_PY_THREAD to test it out.
2017-01-31 18:42:35 +11:00
Damien George a6386f74b8 stmhal/pendsv: Fill in comments about what the stack contains. 2017-01-31 13:58:34 +11:00
Damien George 7d8c79ab6d stmhal/main: Guard init_sdcard_fs with MICROPY_HW_HAS_SDCARD. 2017-01-31 13:04:32 +11:00
Damien George e0381424cc stmhal/modmachine: Add machine.Signal type. 2017-01-31 12:36:20 +11:00
Damien George e24e03b415 stmhal/pin: Add C-level pin ioctl method. 2017-01-31 12:36:04 +11:00
Damien George 80dfd65090 stmhal/main: Put /sd directory before /flash in sys.path.
If the SD card is mounted then its libraries (ie those that are imported)
should override any in /flash.
2017-01-31 12:30:18 +11:00