When using asynchronous API, transfer will fail if the source buffer is
located in a region that cannot be accessed by DMA. This could happen
when a buffer is declared const, and placed in flash memory, for
example.
Workaround this problem by loading the data into a set of temporary
caches before passing them to DMA.
Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>
This commit adds asynchronous mode support to MAX32 UART driver. Each
direction uses a single DMA channel that is assigned in devicetree
configuration.
Asynchronous mode also depends on interrupts to refresh receive
timeouts.
Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>
Defined default values for baudrate, parity, stop bits, and data bits.
This removes complexity and obfuscation from the code.
Signed-off-by: Yishai Jaffe <yishai1999@gmail.com>
- Defined 'api_configure' function outside of
'CONFIG_UART_USE_RUNTIME_CONFIGURE' macro because it is the only
configuration function and used in device initialization function.
- Removed unnecessary 'IF_ENABLED' part.
Signed-off-by: Furkan Akkiz <hasanfurkan.akkiz@analog.com>
Update rx and tx ready function as per of its description.
For tx_ready if tx interrupt enabled AND tx fifo is not full
For rx_ready if rx interrupt enalbed AND rx fifo not empty
Signed-off-by: Sadik Ozer <sadik.ozer@analog.com>
The uart-controller devicetree binding declares current-speed and
data-bits properties as optional, but the max32 uart driver failed to
build if they weren't defined. Fix the driver by falling back to
commonly used values for these properties.
Signed-off-by: Maureen Helm <maureen.helm@analog.com>
