circuitpython/ports/atmel-samd/common-hal/busio
warriorofwire eb3d5fa453 ujson: do not eat trailing whitespace
Ujson should only worry about whitespace before JSON.  This becomes apparent when you are using MP stream protocol to read directly from input buffers.

When you attempt to read(1) on a UART (and possibly other protocols) you have to wait for either the byte or the timeout.

Fixes:
- Waiting for a timeout after you have completed reading a correct and complete JSON off the input.
- Raising an OSError after reading a correct and complete JSON off the input.
- Eating more data than semantically owned off the input buffer.
- Blocking to start parsing JSON until the entire JSON body has been loaded into a potentially large, contiguous Python object.

Code you would write before:
```
line = board_busio_uart_port.read_line()
json_dict = json.loads(line)
```
or reaching for fixed buffers and swapping them around in Python.

Code that did not work before that does now:
```
json_dict = json.load(board_busio_uart_port)
```

- This removes the need for intermediate copies of data when reading JSON from micropython stream protocol inputs.
- It also increases total application speed by parsing JSON concurrently with receiving on boards that read from UART via DMA.
- It simplifies code that users write while improving their apps.
2020-05-10 20:45:42 -07:00
..
__init__.c Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 2017-10-24 22:31:16 -07:00
I2C.c Make requiring I2C pullups be optional 2020-01-09 17:31:50 -05:00
I2C.h add pin claiming to devices 2018-08-31 18:38:05 -04:00
OneWire.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 2017-10-24 22:31:16 -07:00
SPI.c new pin validation routines; don't use mp_const_none if NULL will do 2020-02-28 23:43:04 -05:00
SPI.h Add support for grayscale displays that are < 8 bit depth. 2019-07-19 16:06:11 -07:00
UART.c ujson: do not eat trailing whitespace 2020-05-10 20:45:42 -07:00
UART.h UART fixes and enhancements; default board object fix 2018-09-12 17:19:43 -04:00