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commit 23de8cefb9ff0ff520dda5cfae6f5c9b1bc83285 Author: raiden00pl <[email protected]> AuthorDate: Thu Nov 16 18:51:42 2023 +0100 Documentation: update nRF91 doc --- Documentation/platforms/arm/nrf91/index.rst | 92 +++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/Documentation/platforms/arm/nrf91/index.rst b/Documentation/platforms/arm/nrf91/index.rst index d3ca12e89a..64b5011272 100644 --- a/Documentation/platforms/arm/nrf91/index.rst +++ b/Documentation/platforms/arm/nrf91/index.rst @@ -10,6 +10,98 @@ Modem Support Modem is supported in the nRF91 using Nordic's `Modem library <https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/nrf_modem/README.html>`_. +Supported modem features: + +============= ========= =============== +Modem feature Support Notes +============= ========= =============== +AT Yes ``/dev/modem`` +Socket Yes via ``usrsock`` +SIOCLTECMD Partial +GNSS Yes +AGPS No +Bootloader No +Delta DFU No +Modem Trace No +============= ========= =============== + +Peripheral Support +================== + +The following list indicates peripherals supported in NuttX: + +========== ======= ================= +Peripheral Support Notes +========== ======= ================= +CRUPTOCELL No +DPPI No +EGU No +GPIO Yes +GPIOTE Yes +IPC Yes nrfx compatible +I2S No +KMU No +PDM No +PWM Yes +RTC Yes +SPIM Yes +SPIS No +SPU Yes +TIMER Yes +TWIM Yes +TWIS No +UART Yes +UARTE No +WDT No +========== ======= ================= + +I2C +--- + +I2C is supported both in polling and interrupt mode (via EasyDMA). + +.. note:: The I2C peripheral does not support sending two transfers without sending + a START nor RSTART. For this reason, this is supported via an internal buffer where + messages will be first copied to and sent together. + +The lower-half of I2C bus is initialized by :c:func:`nrf91_i2cbus_initialize`. + +SPI +--- + +SPI is supported both in polling and interrupt-based (via EasyDMA) mode. The latter +supports arbitrarily long transfers using Nordic's list-mode EasyDMA (intermediate +transfers are currently still manually started). + +It is possible to use SPI without either MOSI/MISO pin defined by simply not providing +the relevant ``BOARD_SPI*_MISO/MOSI_PIN`` definition. + +This implementation support power management hooks, which will disable SPI peripheral when +entering either SLEEP or STANDBY modes and reconfigure it when going back to NORMAL mode. + +UART +---- + +UART is implemented using polling. UARTE EasyDMA feature is not yet supported. +This may introduce a large number of interrupts which may be undesirable. + +PWM +--- + +PWM is supported via standard driver. This means that more advanced features such as +complex sequences or waveform modes are not yet supported. + +TIMER +----- + +The TIMER peripheral is exposed as standard timer. + +RTC +--- + +The RTC peripheral is exposed as a standard timer, since it is really a low-power +timer, without any date handling capabilities. + Tool Issues ===========
