Zephyr UART drivers offer very low-level functionality. Oftentimes,
it would be useful to provide higher-level wrappers around UART
device which would offer additional functionality. However, UART
driver irq callback routine receives just a pointer to (low-level)
UART device, and it's not possible to get to a wrapper structure
(without introducing expensive external mapping structures). This
is an indirect reason why the current UARt wrappers - uart_pipe,
console - are instantiated statically just for one underlying UART
device and cannot be reused for multiple devices.
Solve this by allowing to pass an arbitrary user data to irq
callback, set by new uart_irq_callback_user_data_set() function.
Existing uart_irq_callback_set() keeps setting a callback which
will receive pointer to the device.
While public API maintains compatibility, drivers themselves need
to be updated to support arbitrary user data storage/passing (as
legacy uart_irq_callback_set() functionality is now implemented in
terms of it).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
This patch changes the way the transmitter is handled in the UART
driver, so that it is activated only when there is something to send.
The current UART API does not allow to disable RX completely, since
the poll_in function description implies that UART must continuously
listen. To provide a way of disabling the entire UART and lowering the
current consumption, this patch adds the power management to the UART
driver. When instructed to enter any of the power saving states,
the driver will disable the UART, and it will enable the UART back
when it is switched again to the active state.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
1. dts.fixup files updated with peripheral address and IRQ NUMBER.
2. Peripheral address is taken from DT.
3. IRQ number is taken from DT.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
Change define used to select interrupt driven functions
from CONFIG_UART_INTERRUPT_DRIVEN to CONFIG_UART_0_INTERRUPT_DRIVEN.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
The dependency on the GPIO driver was a bit artificial, since the UART
driver used the GPIO API functions only to configure the pins at its
initialization. This configuration will be done by using nrfx GPIO HAL
functions directly, just like in case when a shim is using
an nrfx driver underneath.
HAL functions can be fed with the absolute pin numbers, that are
currently used for Nordic SoCs in Kconfig and DT, and for the GPIO
driver an additional translation would be required, to extract
the port and its relative pin number.
UART driver has to be initialized at PRE_KERNEL_1 (because of the
console using it) and currently the GPIO driver is initialized
at POST_KERNEL stage, so calling its API function form the UART
initialization routine was incorrect.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
1. API function: uart_nrfx_irq_tx_enable is expected to enable and
trigger TXDRDY interrupt. Due to HW limiation before first byte has
been sent TXDRDY interrupt will not be triggered so it must be forced
by the software.
2. Common function: uart_nrfx_irq_tx_ready_complete is used for two
API entries: irq_tx_ready, irq_tx_complete because Nordic hardware does
not distinguish between them. This function returns 1 when driver is
ready to accept data and 0 otherwise.
3. Removed Hungarian prefixes.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
Commit: 8a255eaf39
broke flow control initialization.
This PR adds missing:
- GPIO initialization for RTS and CTS.
- RTS and CTS pins assignment for flow control.
- Function for setting default hight state for TXD and RTS pins.
In addition obsolete cast to void has been removed.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
The nrfx uart driver will get stuck in uart_poll_out function since
the uart_console driver has been initialized at PRE_KERNEL_1 level
and is making calls to the uart driver before the uart driver has been
initialized.
Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
UART driver renamed to keep the same convention as SPI and TWI drivers.
All substrings: "UART_NRF5" in defines renamed to "UART_NRFX_UART".
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
