Harry Ho
fbcc3778d2
spi: Always delay for NSS setup time
...
* Fixes the lack of setup time delay of an fixed-byte command that immediately follows an N-byte command.
* Extra 50ns will be inserted in-between fixed-byte commands but should be acceptable.
2021-06-23 12:49:21 +08:00
Harry Ho
bb6824b944
nal: Remove delay_ns func pointer
2021-06-04 13:21:02 +08:00
Harry Ho
d8b1132b8a
examples: Replace delay_ns with cortex-m delay
2021-06-03 15:06:24 +08:00
Harry Ho
999ca5f08a
spi: Replace delay_ns func pointer with delay on cortex-m
...
* SPI NSS nanosecond delays now only takes place on Cortex-M CPUs
2021-06-03 15:03:43 +08:00
Harry Ho
9de8d77a24
Restore embedded_hal DelayUs for device init
2021-06-03 13:38:59 +08:00
Harry Ho
ec20970a50
spi: Impose stricter NSS timing
2021-06-03 12:03:35 +08:00
Harry Ho
35b7924431
spi: Add back NSS high delay conditionally based on opcode type
2021-06-03 11:51:09 +08:00
Harry Ho
d05d7f91e2
spi: Simplify all reg reads/writes as rw_n()
2021-06-03 11:51:09 +08:00
Harry Ho
27ba42c4fb
spi: Introduce certain 1 & 3-byte opcodes to replace reg read/writes
2021-06-03 11:51:09 +08:00
Harry Ho