docs: Miscelaneous improvements
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
This commit is contained in:
Alberto Escolar Piedras
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27
TODO.txt
27
TODO.txt
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@ -1,27 +0,0 @@
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Current limitations and pending things to do:
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(T): To do
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(N): Nice to have
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(L): Low priority
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(VL): Very low priority (not used in current controller SW)
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* Proper testing: All currently implemented models have only been tested lightly
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* RADIO:
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* (L) Only BLE 1/2Mbps (no LR) and 802.15.4 packet format supported
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* (L) Only default freq. map supported
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* (VL) Only 1st logical address is supported
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* (VL) More limitation listed in NRF_RADIO.c
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* ECB:
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* AAR:
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* AES-CCM:
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* FICR:
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* Just empty registers by now
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* (N) Would be nice to have a programmable BT-Addr from command line
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* RNG:
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* (N) Delay is always the same and constant (with or without bias correction)
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* TIMER:
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* (VL) Counter mode is not fully supported
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Not implemented, and no plans to implement:
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* WDT, QDEC, LPCOMP, COMP, PWM, PDM, ACL, NVMC, MWU, SPIM/S, I2S, FPU, USB,
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UART, UARTE, QSPI, GPIO, CRYPTOCELL, UICR
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@ -1,12 +1,15 @@
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# Models of some of the HW present in a NRF52xxx
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# Models of the nRF52xxx HW peripherals
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Where relevant differences exist, these models try to align with a NRF52833.
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This repo contains both models of the NRF52 HW as well as some replacement nrfx
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This repo contains models of the nRF52 HW peripherals and some replacement nrfx
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HAL functions. When used in combination with the real nrfx, these should enable code
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meant for the nrfx to run without needing further changes.
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This includes Zephyr SW.
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Where relevant
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[differences](https://infocenter.nordicsemi.com/index.jsp?topic=%2Fstruct_nrf52%2Fstruct%2Fnrf52.html&cp=5)
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exist, these models try to align with an
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[nRF52833](https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/nrf52833.html?cp=5_1).
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When compiling this component using the provided Makefile (not with Zephyr's build system),
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the environment variable `NRFX_BASE` must be set to the path where a nrfx has been cloned.
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The nrfx must be at least version 2.3.0.
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@ -33,11 +36,22 @@ for the radio environment simulation.
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For more information about the HW models, or how to use them without the
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nrf52_bsim please refer to [README_HW_models.md](./README_HW_models.md)
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## Faithfullness of these models
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## What these models include
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Not all SOC peripherals are modelled yet, and for some of the included peripherals
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not all features or options are modelled. This is typically the case for HW functionality
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which is not used by the Zephyr drivers/OS.
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You can find what features of which peripherals are included so far, and with what approximations in
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[README_impl_status.md](./README_impl_status.md).
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It is certainly possible to expand these models to include the missing peripherals or functionality.
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### Faithfullness of these models
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These models are accurate enough to allow the current Zephyr to run, and
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its BLE stack to function. For more details please see the notes on the source
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its BLE and 15.4 stacks to function. For more details please see the notes on the source
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files for each peripheral model.
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In general, functionality is modelled only to the necessary degree as to enable the SW to run,
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in a manner that is comparable to the real HW.
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These models are based solely on
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[the public SOC specifications](https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/nrf52833.html)
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@ -45,12 +59,6 @@ These models are based solely on
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They have been developed without any other knowledge and probably contain
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inacuracies, and defects.
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Several of the peripherals which are not necessary for typical BLE applications
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are not modelled. Moreover, in the modelled peripherals, functionality which is
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not used in the Zephyr drivers is normally not modelled either.
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The [TODO](../TODO.txt) file list some mayor omissions.
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It is certainly possible to expand these models to include the rest.
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### About the ARM processor peripherals
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These models do not include the ARM processor peripherals (for ex. the SCB)
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@ -2,7 +2,7 @@ For general information about these models refer to [README.md](README.md)
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You will only need to continue reading if you are curious about how these
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models are built, or if you want to use them for some other purpose than
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with the nrf52_bsim.
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with Zephyr's nrf52_bsim.
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## Requirements
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@ -0,0 +1,84 @@
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# Current implementation status
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Currently these models aim at modelling the peripherals of a nRF52833 SOC at varying degrees:
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* ✓ **NVMC** — Non-volatile memory controller
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* See [NRF_NVMC.c](../src/HW_models/NRF_NVMC.c)
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* ✓ **FICR** — Factory information configuration registers
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* See [NRF_FICR.c](../src/HW_models/NRF_FICR.c)
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* ✓ **UICR** — User information configuration registers
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* See [NRF_NVMC.c](../src/HW_models/NRF_NVMC.c)
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* 𐄂 **POWER** — Power supply
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* Only register stubs
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* ✓ **CLOCK** — Clock control
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* See [NRF_CLOCK.c](../src/HW_models/NRF_CLOCK.c)
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* ✓ **AAR** — Accelerated address resolver
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* See [NRF_AAR.c](../src/HW_models/NRF_AAR.c)
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* 𐄂 **ACL** — Access control lists
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* Not modelled yet
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* ✓ **CCM** — AES CCM mode encryption
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* See [NRF_AES_CCM.c](../src/HW_models/NRF_AES_CCM.c)
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* 𐄂 **COMP** — Comparator
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* Not modelled yet
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* ✔ **ECB** — AES electronic codebook mode encryption
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* Complete
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* ✔ **EGU** — Event generator unit
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* Complete
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* ✓ **GPIO** — General purpose input/output
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* See [NRF_GPIO.c](../src/HW_models/NRF_GPIO.c)
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* ✔ **GPIOTE** — GPIO tasks and events
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* Complete with very minor differences
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* See [NRF_GPIOTE.c](../src/HW_models/NRF_GPIOTE.c)
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* 𐄂 **I2S** — Inter-IC sound interface
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* Not modelled yet
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* 𐄂 **LPCOMP** — Low-power comparator
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* Not modelled yet
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* 𐄂 **MWU** — Memory watch unit
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* Not modelled yet
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* 𐄂 **NFCT** — Near field communication tag
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* Not modelled yet
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* 𐄂 **PDM** — Pulse density modulation interface
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* Not modelled yet
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* ✔ **PPI** — Programmable peripheral interconnect
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* Complete but some peripheral connections are missing
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* 𐄂 **PWM** — Pulse width modulation
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* Not modelled yet
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* 𐄂 **QDEC** — Quadrature decoder
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* Not modelled yet
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* ✓ **RADIO** — 2.4 GHz radio
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* See [NRF_RADIO.c](../src/HW_models/NRF_RADIO.c)
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* ✓ **RNG** — Random number generator
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* See [NRF_RNG.c](../src/HW_models/NRF_RNG.c)
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* ✓ **RTC** — Real-time counter
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* See [NRF_RTC.c](../src/HW_models/NRF_RTC.c)
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* 𐄂 **SAADC** — Successive approximation analog-to-digital converter
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* Not modelled yet
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* 𐄂 **SPI** — Serial peripheral interface master
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* Not modelled yet
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* 𐄂 **SPIM** — Serial peripheral interface master with EasyDMA
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* Not modelled yet
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* 𐄂 **SPIS** — Serial peripheral interface slave with EasyDMA
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* Not modelled yet
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* ✔ **SWI** — Software interrupts
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* See EGU
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* ✓ **TEMP** — Temperature sensor
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* See [NRF_TEMP.c](../src/HW_models/NRF_TEMP.c)
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* 𐄂 **TWI** — I2C compatible two-wire interface
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* Not modelled yet
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* ✓ **TIMER** — Timer/counter
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* See [NRF_TIMER.c](../src/HW_models/NRF_TIMER.c)
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* 𐄂 **TWIM** — I2C compatible two-wire interface master with EasyDMA
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* Not modelled yet
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* 𐄂 **TWIS** — I2C compatible two-wire interface slave with EasyDMA
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* Not modelled yet
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* 𐄂 **UART** — Universal asynchronous receiver/transmitter
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* Not modelled yet
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* 𐄂 **UARTE** — Universal asynchronous receiver/transmitter with EasyDMA
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* Not modelled yet
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* 𐄂 **USBD** — Universal serial bus device
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* Not modelled yet
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* 𐄂 **WDT** — Watchdog timer
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* Not modelled yet
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ARM processor peripherals or the AHB interconnect are not part of these models
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@ -3,10 +3,12 @@
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* AR — Accelerated address resolver
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* AAR — Accelerated address resolver
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/aar.html?cp=4_1_0_5_1
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*/
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#include "NRF_AAR.h"
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#include <string.h>
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#include <stdbool.h>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* AES electronic codebook mode encryption
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/ecb.html?cp=4_1_0_5_5
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*/
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#include "NRF_AES_ECB.h"
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#include "NRF_PPI.h"
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#include <string.h>
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@ -14,11 +20,6 @@
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#include "bs_tracing.h"
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#include "BLECrypt_if.h"
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/*
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* AES electronic codebook mode encryption
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/ecb.html?cp=4_1_0_5_5
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*/
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bs_time_t Timer_ECB = TIME_NEVER; /* Time when the ECB will finish */
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NRF_ECB_Type NRF_ECB_regs;
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "NRF_CLOCK.h"
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#include <string.h>
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#include <stdint.h>
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#include "time_machine_if.h"
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#include "NRF_HW_model_top.h"
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#include "NRF_PPI.h"
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#include "NRF_RTC.h"
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#include "irq_ctrl.h"
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#include "bs_tracing.h"
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#include "bs_utils.h"
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/*
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* CLOCK — Clock control
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* After TASK_CTSTOP EVENTS_CTSTOPPED is raised immediately.
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*/
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#include "NRF_CLOCK.h"
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#include <string.h>
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#include <stdint.h>
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#include "time_machine_if.h"
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#include "NRF_HW_model_top.h"
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#include "NRF_PPI.h"
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#include "NRF_RTC.h"
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#include "irq_ctrl.h"
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#include "bs_tracing.h"
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#include "bs_utils.h"
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NRF_CLOCK_Type NRF_CLOCK_regs;
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static uint32_t CLOCK_INTEN = 0; //interrupt enable
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@ -4,17 +4,17 @@
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* EGU — Event generator unit
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/egu.html?cp=4_1_0_5_6
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*/
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#include <string.h>
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#include "bs_tracing.h"
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#include "irq_ctrl.h"
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#include "NRF_EGU.h"
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#include "NRF_PPI.h"
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/*
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* EGU — Event generator unit
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/egu.html?cp=4_1_0_5_6
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*/
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#define N_EGU 6
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#define N_EGU_EVENTS 16
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NRF_EGU_Type NRF_EGU_regs[N_EGU];
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "NRF_FICR.h"
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#include "NRF_NVMC.h"
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#include <string.h>
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#include "bs_rand_main.h"
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#include "weak_stubs.h"
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/*
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* Factory information configuration registers
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* with command line options; something like -deviceaddr=<bt_address>
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*/
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#include "NRF_FICR.h"
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#include "NRF_NVMC.h"
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#include <string.h>
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#include "bs_rand_main.h"
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#include "weak_stubs.h"
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NRF_FICR_Type NRF_FICR_regs;
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void nrf_ficr_init(){
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include "NRF_GPIO.h"
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#include "NRF_GPIOTE.h"
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#include "bs_tracing.h"
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/*
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* GPIO — General purpose input/output
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/gpio.html?cp=5_1_0_5_7
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* is sent instantaneously to the GPIOTE
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include "NRF_GPIO.h"
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#include "NRF_GPIOTE.h"
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#include "bs_tracing.h"
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NRF_GPIO_Type NRF_GPIO_regs[NRF_GPIOS];
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/* Number of pins per port: */
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <string.h>
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#include "NRF_GPIOTE.h"
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#include "NRF_GPIO.h"
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#include "NRF_PPI.h"
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#include "irq_ctrl.h"
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#include "bs_tracing.h"
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/*
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* GPIOTE — GPIO tasks and events
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/gpiote.html?cp=5_1_0_5_8
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* so task priority is not accounted for
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*/
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#include <stdint.h>
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#include <string.h>
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#include "NRF_GPIOTE.h"
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#include "NRF_GPIO.h"
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#include "NRF_PPI.h"
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#include "irq_ctrl.h"
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#include "bs_tracing.h"
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NRF_GPIOTE_Type NRF_GPIOTE_regs = {0};
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static uint32_t GPIOTE_ITEN;
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "bs_tracing.h"
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#include "bs_cmd_line.h"
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#include "bs_oswrap.h"
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#include "NRF_NVMC.h"
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#include "NRF_HW_model_top.h"
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#include "time_machine_if.h"
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#include "weak_stubs.h"
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/*
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* NVMC — Non-volatile memory controller
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/nvmc.html?cp=5_1_0_3_2
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* * Warn users if an address is written more than n_write between erases
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*/
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "bs_tracing.h"
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#include "bs_cmd_line.h"
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#include "bs_oswrap.h"
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#include "NRF_NVMC.h"
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#include "NRF_HW_model_top.h"
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#include "time_machine_if.h"
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#include "weak_stubs.h"
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NRF_UICR_Type *NRF_UICR_regs_p;
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NRF_NVMC_Type NRF_NVMC_regs = {0};
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bs_time_t Timer_NVMC = TIME_NEVER; //Time when the next flash operation will be completed
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "NRF_POWER.h"
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/*
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* This is only a stub of the register interface with no functionality behind
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* https://infocenter.nordicsemi.com/topic/ps_nrf52833/power.html?cp=4_1_0_4_2
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*/
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|
||||
#include "NRF_POWER.h"
|
||||
|
||||
NRF_POWER_Type NRF_POWER_regs = {0};
|
||||
|
|
|
|||
|
|
@ -3,6 +3,13 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
|
||||
/*
|
||||
* PPI — Programmable peripheral interconnect
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/ppi.html?cp=4_1_0_5_14
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
|
@ -20,12 +27,6 @@
|
|||
#include "NRF_EGU.h"
|
||||
#include "bs_tracing.h"
|
||||
|
||||
/*
|
||||
* PPI — Programmable peripheral interconnect
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/ppi.html?cp=4_1_0_5_14
|
||||
*
|
||||
*/
|
||||
|
||||
NRF_PPI_Type NRF_PPI_regs; ///< The PPI registers
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -4,31 +4,10 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include "bs_types.h"
|
||||
#include "bs_tracing.h"
|
||||
#include "bs_utils.h"
|
||||
#include "bs_pc_2G4.h"
|
||||
#include "bs_pc_2G4_utils.h"
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_RADIO.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "NRF_AES_CCM.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "NRF_HWLowL.h"
|
||||
#include "crc.h"
|
||||
#include "NRF_RADIO_signals.h"
|
||||
#include "NRF_RADIO_utils.h"
|
||||
#include "NRF_RADIO_timings.h"
|
||||
#include "NRF_RADIO_bitcounter.h"
|
||||
#include "NRF_RADIO_priv.h"
|
||||
|
||||
/**
|
||||
* RADIO — 2.4 GHz Radio
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/radio.html?cp=4_1_0_5_17
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/radio.html?cp=5_1_0_5_17
|
||||
*
|
||||
* Note: as of now, only 1&2Mbps BLE & 15.4 packet formats are supported, there is quite many notes around in the code
|
||||
* where changes would be required to support other formats
|
||||
|
|
@ -158,6 +137,28 @@
|
|||
* most of the same CCA_ED code, and the same CCA procedure to the Phy.
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include "bs_types.h"
|
||||
#include "bs_tracing.h"
|
||||
#include "bs_utils.h"
|
||||
#include "bs_pc_2G4.h"
|
||||
#include "bs_pc_2G4_utils.h"
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_RADIO.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "NRF_AES_CCM.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "NRF_HWLowL.h"
|
||||
#include "crc.h"
|
||||
#include "NRF_RADIO_signals.h"
|
||||
#include "NRF_RADIO_utils.h"
|
||||
#include "NRF_RADIO_timings.h"
|
||||
#include "NRF_RADIO_bitcounter.h"
|
||||
#include "NRF_RADIO_priv.h"
|
||||
|
||||
NRF_RADIO_Type NRF_RADIO_regs;
|
||||
uint32_t NRF_RADIO_INTEN = 0; //interrupt enable (global for RADIO_signals.c)
|
||||
|
||||
|
|
|
|||
|
|
@ -83,7 +83,7 @@ void nrf_radio_signal_DISABLED(){
|
|||
NRF_RADIO_regs.EVENTS_DISABLED = 1;
|
||||
nrf_ppi_event(RADIO_EVENTS_DISABLED);
|
||||
|
||||
//These 2 are fake shortcuts meant to start a HW timer for the TIFS
|
||||
//These 2 are fake tasks meant to start a HW timer for the TIFS
|
||||
if ( NRF_RADIO_regs.SHORTS & RADIO_SHORTS_DISABLED_TXEN_Msk ) {
|
||||
nrf_radio_fake_task_TRXEN_TIFS();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,16 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
|
||||
/*
|
||||
* RNG — Random number generator
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/rng.html?cp=4_1_0_5_18
|
||||
*
|
||||
* Very rough model
|
||||
*
|
||||
* The delay is constant
|
||||
*/
|
||||
|
||||
#include "NRF_RNG.h"
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
|
|
@ -13,13 +23,6 @@
|
|||
#include "irq_ctrl.h"
|
||||
#include "bs_rand_main.h"
|
||||
|
||||
/*
|
||||
* RNG — Random number generator
|
||||
* https://infocenter.nordicsemi.com/topic/ps_nrf52833/rng.html?cp=4_1_0_5_18
|
||||
*
|
||||
* Very rough model
|
||||
*/
|
||||
|
||||
NRF_RNG_Type NRF_RNG_regs;
|
||||
bs_time_t Timer_RNG = TIME_NEVER; //Time when the next random number will be ready
|
||||
|
||||
|
|
|
|||
|
|
@ -3,16 +3,6 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include "NRF_PPI.h"
|
||||
#include "NRF_CLOCK.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_tracing.h"
|
||||
#include "time_machine_if.h"
|
||||
|
||||
/*
|
||||
* RTC — Real-time counter
|
||||
|
|
@ -33,6 +23,17 @@
|
|||
* * Note: RTC2 cannot be used (it does not have an assigned interrupt)
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include "NRF_PPI.h"
|
||||
#include "NRF_CLOCK.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_tracing.h"
|
||||
#include "time_machine_if.h"
|
||||
|
||||
#define N_RTC 3
|
||||
#define N_CC 4
|
||||
|
||||
|
|
|
|||
|
|
@ -3,14 +3,6 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
#include "NRF_TEMP.h"
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_rand_main.h"
|
||||
|
||||
/*
|
||||
* TEMP — Temperature sensor
|
||||
|
|
@ -25,6 +17,15 @@
|
|||
* * There is no modeling of possible calibration errors or inaccuracies due to no non-linearities compensation
|
||||
*/
|
||||
|
||||
#include "NRF_TEMP.h"
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_rand_main.h"
|
||||
|
||||
NRF_TEMP_Type NRF_TEMP_regs;
|
||||
|
||||
bs_time_t Timer_TEMP = TIME_NEVER; //Time when the next temperature measurement will be ready
|
||||
|
|
|
|||
|
|
@ -3,14 +3,6 @@
|
|||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_TIMER.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_tracing.h"
|
||||
|
||||
/*
|
||||
* TIMER — Timer/counter
|
||||
|
|
@ -25,6 +17,15 @@
|
|||
* * The functionality of TASK_SHUTDOWN is a bit of a guess
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include "time_machine_if.h"
|
||||
#include "NRF_TIMER.h"
|
||||
#include "NRF_HW_model_top.h"
|
||||
#include "NRF_PPI.h"
|
||||
#include "irq_ctrl.h"
|
||||
#include "bs_tracing.h"
|
||||
|
||||
#define N_TIMERS 5
|
||||
#define N_CC 6
|
||||
NRF_TIMER_Type NRF_TIMER_regs[N_TIMERS];
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
## nRFx HAL
|
||||
|
||||
The HAL source files provided with these models implement
|
||||
some modifications to the HAL interface [real nRFx HAL](https://github.com/NordicSemiconductor/nrfx/)
|
||||
some modifications to [the real nRFx HAL](https://github.com/NordicSemiconductor/nrfx/)
|
||||
needed due to the HW models peculiarities.
|
||||
Its main purpose is to allow unmodified embedded code to run directly
|
||||
using this repository HW models.
|
||||
|
|
@ -15,7 +15,7 @@ There is two main differences in this HAL compared to the real one:
|
|||
registers
|
||||
|
||||
* When a HW register with sideeffects is written, the appropriate
|
||||
HW model function is called to trigger that sideeffect.<br><br>
|
||||
HW model function is called to trigger that sideeffect.<br>
|
||||
A sideeffect should be understood as some activity beyond the modification
|
||||
of the register itself. For example, in real HW, writting a `1` to
|
||||
`NRF_RNG->TASKS_START` will start the random number generation.
|
||||
|
|
@ -24,17 +24,13 @@ There is two main differences in this HAL compared to the real one:
|
|||
function `nrf_rng_regw_sideeffects_TASK_START()` needs to be called.
|
||||
This replacement HAL functions take care of that.
|
||||
|
||||
The original implementation of the HAL APIs from the real nrfx is included in `nrf_hal_originals.c`.
|
||||
All these functions are labelled as weak, so they can be replaced as needed with new definition in `src/nrfx/hal/`
|
||||
This removes the need for duplicating code.
|
||||
The original implementation of the HAL APIs from the real nrfx is included in
|
||||
`nrf_hal_originals.c`.
|
||||
All these functions are labelled as weak, so they can be replaced as needed with content
|
||||
of `src/nrfx/hal/`. This removes the need for duplicating code.
|
||||
|
||||
Note that this HAL version should be, wherever possible, a copy of the
|
||||
official nRFx HAL, with only minor differences due to what is described above.
|
||||
And normally most differences between the official version and this one will be
|
||||
simply due to this not having been updated yet.
|
||||
|
||||
Note that, so far, this replacement HAL only provides a subset of the
|
||||
whole nRFx API: Mostly the functions and types used by the current Zephyr
|
||||
BLE controller and necessary drivers, and only for the peripherals which are
|
||||
part of these models.
|
||||
Note that this replacement HAL only provides the necessary replacements for the subset of the
|
||||
nRFx API corresponding to the peripherals included in these models.
|
||||
Note also that for these, not necessarily all nRFx functions which could need replacing are
|
||||
included. Though those used by Zephyr should be included.
|
||||
It is certainly possible to expand it to cover the whole API.
|
||||
|
|
|
|||
Loading…
Reference in New Issue