Commit Graph

6 Commits

Author SHA1 Message Date
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
18d3a5df26 esp8266/esp_mphal: Provide mp_hal_pin_od_high_dht so DHT works reliably.
The original behaviour of open-drain-high was to use the open-drain mode of
the GPIO pin, and this seems to make driving a DHT more reliable.  See
issue #4233.
2019-01-22 00:26:04 +11:00
Damien George
afd0701bf7 esp8266: Change UART(0) to attach to REPL via uos.dupterm interface.
This patch makes it so that UART(0) can by dynamically attached to and
detached from the REPL by using the uos.dupterm function.  Since WebREPL
uses dupterm slot 0 the UART uses dupterm slot 1 (a slot which is newly
introduced by this patch).  UART(0) must now be attached manually in
boot.py (or otherwise) and inisetup.py is changed to provide code to do
this.  For example, to attach use:

    import uos, machine
    uart = machine.UART(0, 115200)
    uos.dupterm(uart, 1)

and to detach use:

    uos.dupterm(None, 1)

When attached, all incoming chars on UART(0) go straight to stdin so
uart.read() will always return None.  Use sys.stdin.read() if it's needed
to read characters from the UART(0) while it's also used for the REPL (or
detach, read, then reattach).  When detached the UART(0) can be used for
other purposes.

If there are no objects in any of the dupterm slots when the REPL is
started (on hard or soft reset) then UART(0) is automatically attached.
Without this, the only way to recover a board without a REPL would be to
completely erase and reflash (which would install the default boot.py which
attaches the REPL).
2018-05-21 11:31:59 +10:00
Damien George
033c32e694 esp8266/esp_mphal.h: Fix I2C glitching by using input mode for od_high.
Certain pins (eg 4 and 5) seem to behave differently at the hardware level
when in open-drain mode: they glitch when set "high" and drive the pin
active high for a brief period before disabling the output driver.  To work
around this make the pin an input to let it float high.
2018-03-12 12:45:09 +11:00
Damien George
4a93801c12 all: Update Makefiles and others to build with new ports/ dir layout.
Also renames "stmhal" to "stm32" in documentation and everywhere else.
2017-09-06 14:09:13 +10:00
Damien George
01dd7804b8 ports: Make new ports/ sub-directory and move all ports there.
This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.
2017-09-06 13:40:51 +10:00