atmel-samd: Remember SPI baudrate.

tannewt · tannewt · commit e2f39a8d9366 · 2017-09-01T12:44:52.000-07:00
This prevents the SERCOM from blipping the data line on each transaction and therefore fixes adafruit#219.
diff --git a/atmel-samd/common-hal/busio/SPI.c b/atmel-samd/common-hal/busio/SPI.c
@@ -174,6 +174,7 @@ bool common_hal_busio_spi_configure(busio_spi_obj_t *self,
         if (status != STATUS_OK) {
             return false;
         }
+        self->current_baudrate = baudrate;
     }
 
     SercomSpi *const spi_module = &(self->spi_master_instance.hw->SPI);

Original file line number	Diff line number	Diff line change
`@@ -174,6 +174,7 @@ bool common_hal_busio_spi_configure(busio_spi_obj_t *self,`
`174`	`174`	`if (status != STATUS_OK) {`
`175`	`175`	`return false;`
`176`	`176`	`}`
	`177`	`+ self->current_baudrate = baudrate;`
`177`	`178`	`}`
`178`	`179`
`179`	`180`	`SercomSpi *const spi_module = &(self->spi_master_instance.hw->SPI);`