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23 Commits

Author SHA1 Message Date
Chris Mason 9d674cf7ab stm32/uart: Add support for LPUART1 on L0, L4, H7 and WB MCUs. 
Add LPUART1 as a standard UART.  No low power features are supported, yet.
LPUART1 is enabled as the next available UART after the standard U(S)ARTs:

    STM32WB:      LPUART1 = UART(2)
    STM32L0:      LPUART1 = UART(6)
    STM32L4:      LPUART1 = UART(6)
    STM32H7:      LPUART1 = UART(9)

On all ports: LPUART1 = machine.UART('LP1')

LPUART1 is enabled by defining MICROPY_HW_LPUART1_TX and
MICROPY_HW_LPUART1_RX in mpconfigboard.h.

Signed-off-by: Chris Mason <c.mason@inchipdesign.com.au>
 2021-02-21 15:49:32 +11:00
Damien George 1e4e2644ec stm32: Add support for a board to reserve certain peripherals. 
Allows reserving CAN, I2C, SPI, Timer and UART peripherals.  If reserved
the peripheral cannot be accessed from Python.

Signed-off-by: Damien George <damien@micropython.org>
 2020-12-07 17:22:08 +11:00
Jim Mussared 23109988c2 stm32/uart: Allow static IRQ handler registration. 
This will allow the HCI UART to use a non-heap mp_irq_obj_t, which avoids
needing to make a root pointer for it.
 2020-09-08 10:46:30 +10:00
Damien George 3ff7079277 lib/utils/mpirq: Add mp_irq_init func, and clean up unused init method. 
mp_irq_init() is useful when the IRQ object is allocated by the caller.

The mp_irq_methods_t.init method is not used anywhere so has been removed.

Signed-off-by: Damien George <damien@micropython.org>
 2020-09-04 12:40:38 +10:00
Damien George 9ae50d22c9 stm32/machine_uart: Allow re-init'ing a static UART object. 
Just disallow changing the rxbuf which will be some static RAM (can't free
it and soft-reset would lose any dynamically allocated buffer).
 2020-06-01 21:41:54 +10:00
Damien George 88971342b1 stm32/machine_uart: Retain attached-to-repl setting when init'ing UART. 2020-06-01 21:41:50 +10:00
Jim Mussared def76fe4d9 all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
Damien George 69661f3343 all: Reformat C and Python source code with tools/codeformat.py. 
This is run with uncrustify 0.70.1, and black 19.10b0.
 2020-02-28 10:33:03 +11:00
Damien George ad7213d3c3 py: Add mp_raise_msg_varg helper and use it where appropriate. 
This commit adds mp_raise_msg_varg(type, fmt, ...) as a helper for
nlr_raise(mp_obj_new_exception_msg_varg(type, fmt, ...)).  It makes the
C-level API for raising exceptions more consistent, and reduces code size
on most ports:

   bare-arm:   +28 +0.042%
minimal x86:  +100 +0.067%
   unix x64:   -56 -0.011%
unix nanbox:  -300 -0.068%
      stm32:  -204 -0.054% PYBV10
     cc3200:    +0 +0.000%
    esp8266:   -64 -0.010% GENERIC
      esp32:  -104 -0.007% GENERIC
        nrf:  -136 -0.094% pca10040
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
 2020-02-13 11:52:40 +11:00
Damien George 09376f0e47 py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 
This helps to prevent mistakes, and allows easily changing the ROM value of
None if needed.
 2019-12-27 22:51:17 +11:00
Damien George 59b7166d87 stm32: Add initial support for STM32WBxx MCUs. 
This new series of MCUs is similar to the L4 series with an additional
Cortex-M0 coprocessor.  The firmware for the wireless stack must be managed
separately and MicroPython does not currently interface to it.  Supported
features so far include: RTC, UART, USB, internal flash filesystem.
 2019-07-17 16:33:31 +10:00
Damien George 23d9c6a0fd stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
Damien George 34942d0a72 stm32/machine_uart: Change default UART timeout to 0, for non blocking. 
It's more common to need non-blocking behaviour when reading from a UART,
rather than having a large timeout like 1000ms (the original behaviour).
With a large timeout it's 1) likely that the function will read forever if
characters keep trickling it; or 2) the function will unnecessarily wait
when characters come sporadically, eg at a REPL prompt.
 2019-05-07 13:56:42 +10:00
Chris Mason 1b956ec817 stm32: Add support for F413 MCUs. 
Includes:
- Support for CAN3.
- Support for UART9 and UART10.
- stm32f413xg.ld and stm32f413xh.ld linker scripts.
- stm32f413_af.csv alternate function mapping.
- startup_stm32f413xx.s because F413 has different interrupt vector table.
- Memory configuration with: 240K filesystem, 240K heap, 16K stack.
 2019-05-02 16:26:53 +10:00
Damien George 6e30f96b0b ports: Convert legacy uppercase macro names to lowercase. 2019-02-12 14:54:51 +11:00
Tobias Badertscher 372e7a4dc6 stm32: Implement UART.irq() method with initial support for RX idle IRQ. 2018-12-29 17:21:37 +11:00
Damien George dc23978dde stm32/uart: Add ability to have a static built-in UART object. 
A static UART is useful for internal peripherals that require a UART and
need to persist outside the soft-reset loop.
 2018-12-10 16:21:50 +11:00
Damien George 61ef031687 stm32/uart: Move config of char_width/char_mask to uart.c. 2018-12-10 16:21:50 +11:00
Damien George 6ea45277bf stm32/uart: For UART init, pass in params directly, not via HAL struct. 
To provide a cleaner and more abstract C-level interface to the UART.
 2018-12-10 16:21:50 +11:00
Damien George bc3f0dddac stm32/uart: Remove HAL's UART_HandleTypeDef from UART object struct. 
This UART_HandleTypeDef is quite large (around 70 bytes in RAM needed for
each UART object) and is not needed: instead the state of the peripheral
held in its registers provides all the required information.
 2018-12-10 16:21:50 +11:00
Damien George 7d7f59d78b stm32/uart: Factor out code to set RX buffer to function uart_set_rxbuf. 2018-12-10 16:21:50 +11:00
Damien George 524e13b006 stm32/uart: Factor out code from machine_uart.c that computes baudrate. 2018-12-10 16:21:50 +11:00
Damien George a2271532be stm32: Split out UART Python bindings from uart.c to machine_uart.c. 2018-12-10 16:21:50 +11:00