suspect-devices/circuitpython/stmhal/spi.c, branch v1.8.6 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.8.6 2016-10-18T03:34:08+00:00 stmhal: Refactor pin usage to use mp_hal_pin API. 2016-10-18T03:34:08+00:00 Damien George damien.p.george@gmail.com 2016-10-18T03:32:42+00:00 urn:sha1:d49d81b1675b39c0c29c95b105edbbb7384f9314 stmhal/spi: Enable use of fast software SPI. 2016-10-04T02:51:30+00:00 Damien George damien.p.george@gmail.com 2016-10-04T02:51:30+00:00 urn:sha1:bd925b59c3177542fa69c3c95f9f1a40ced18039 extmod/machine_spi: Use delay_half, not baudrate, for internal timing. 2016-10-04T02:43:02+00:00 Damien George damien.p.george@gmail.com 2016-10-04T02:43:02+00:00 urn:sha1:b932b2dd1faaf3091b13af7d213041a737e40fac The delay_half parameter must be specified by the port to set up the timing of the software SPI. This allows the port to adjust the timing value to better suit its timing characteristics, as well as provide a more accurate printing of the baudrate. stmhal/spi: Use software SPI if no periph id given, even if pins given. 2016-10-04T02:38:11+00:00 Damien George damien.p.george@gmail.com 2016-10-04T02:38:11+00:00 urn:sha1:9f1e395c167648d1b7fef1175290b0047ee6e1f4 It's simpler to just default to always using software SPI if no specific peripheral id/name is given. To use hardware SPI users must specify a hardware peripheral id as the first parameter to the SPI constructor. stmhal/spi: Make machine.SPI class conform to correct API. 2016-10-03T06:12:43+00:00 Damien George damien.p.george@gmail.com 2016-10-03T05:45:46+00:00 urn:sha1:d4a5ca505676b207370d172f307b845380dea2da Includes both software and hardware SPI implementations. stmhal/spi: Simplify spi_transfer function to take only one buf len arg. 2016-10-03T01:47:56+00:00 Damien George damien.p.george@gmail.com 2016-10-03T01:47:56+00:00 urn:sha1:a22a67661aa4f6309efa1e81b279629050fd1966 extmod/machine_spi: Simplify SPI xfer function to only take one buf len. 2016-10-03T01:39:31+00:00 Damien George damien.p.george@gmail.com 2016-10-03T01:39:31+00:00 urn:sha1:5bb28c7f10ebd1036302cf7ac0b24a7a233de2aa 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. stmhal/spi: Support new machine SPI methods in legacy SPI object. 2016-09-01T06:40:35+00:00 Damien George damien.p.george@gmail.com 2016-09-01T06:37:15+00:00 urn:sha1:49406b0ac6a10406e1505d3fda2447571649f853 stmhal/spi: Factor out SPI transfer code to a single function. 2016-09-01T06:40:32+00:00 Damien George damien.p.george@gmail.com 2016-09-01T06:36:41+00:00 urn:sha1:9b64d1966b831be971e6f743a7d2a93047205c05 stmhal: Make SPI NSS pin definition optional. 2016-07-30T19:08:20+00:00 Dave Hylands dhylands@gmail.com 2016-07-15T23:44:26+00:00 urn:sha1:460bceca391a93bc0a06988eb8984f8b245dad62 Some boards (like the GHI Electronics G30 Dev Board) don't use NSS at all and rather just use GPIO chip selects.