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kylepengchn 5810f4de7d
[components][drivers][spi]: 基于SPI总线驱动框架添加模拟SPI总线扩展 (#5656)
* add soft-spi

* add spi-bit-ops.c/h to components/drivers/spi
* add a drv_soft_spi example for gd32303e-eval

Signed-off-by: kyle <kylepengchn@163.com>

* Fixed the format and the certificate.

Signed-off-by: kyle <kylepengchn@163.com>

* Update the certificate data.

Signed-off-by: kyle <kylepengchn@163.com>
2022-03-23 14:16:14 +08:00
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2018-05-21 17:15:05 +08:00