micropython

Commit Graph

Author	SHA1	Message	Date
Damien George	d434ce3fca	extmod/machine_spi: Factor out software SPI code from esp8266 to extmod.	2016-10-03 16:43:44 +11:00
Damien George	5bb28c7f10	extmod/machine_spi: Simplify SPI xfer function to only take one buf len. There is no need to take src_len and dest_len arguments. The case of reading-only with a single output byte (originally src_len=1, dest_len>1) is now handled by using the output buffer as the input buffer, and using memset to fill the output byte into this buffer. This simplifies the implementations of the spi_transfer protocol function.	2016-10-03 12:39:31 +11:00
Damien George	0823c1baf8	extmod: Add machine_spi with generic SPI C-protocol and helper methods. The idea is that all ports can use these helper methods and only need to provide initialisation of the SPI bus, as well as a single transfer function. The coding pattern follows the stream protocol and helper methods.	2016-09-01 15:07:20 +10:00

Author

SHA1

Message

Date

Damien George

d434ce3fca

extmod/machine_spi: Factor out software SPI code from esp8266 to extmod.

2016-10-03 16:43:44 +11:00

Damien George

5bb28c7f10

extmod/machine_spi: Simplify SPI xfer function to only take one buf len.

There is no need to take src_len and dest_len arguments.  The case of
reading-only with a single output byte (originally src_len=1, dest_len>1)
is now handled by using the output buffer as the input buffer, and using
memset to fill the output byte into this buffer.  This simplifies the
implementations of the spi_transfer protocol function.

2016-10-03 12:39:31 +11:00

Damien George

0823c1baf8

extmod: Add machine_spi with generic SPI C-protocol and helper methods.

The idea is that all ports can use these helper methods and only need to
provide initialisation of the SPI bus, as well as a single transfer
function.  The coding pattern follows the stream protocol and helper
methods.

2016-09-01 15:07:20 +10:00

3 Commits