STR21STM32WL (Sub-GHz/LoRa)
This course descirbe the WL (Sub-GHz/LoRa) architecture and practical examples
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Objectives
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- Theoretical course
- PDF course material (in English) supplemented by a printed version for face-to-face courses.
- Online courses are dispensed using the Teams video-conferencing system.
- The trainer answers trainees' questions during the training and provide technical and pedagogical assistance.
- Practical activities
- Practical activities represent from 40% to 50% of course duration.
- Code examples, exercises and solutions
- For remote trainings:
- One Online Linux PC per trainee for the practical activities.
- The trainer has access to trainees' Online PCs for technical and pedagogical assistance.
- QEMU Emulated board or physical board connected to the online PC (depending on the course).
- Some Labs may be completed between sessions and are checked by the trainer on the next session.
- For face-to-face trainings:
- One PC (Linux ou Windows) for the practical activities with, if appropriate, a target board.
- One PC for two trainees when there are more than 6 trainees.
- For onsite trainings:
- An installation and test manual is provided to allow preinstallation of the needed software.
- The trainer come with target boards if needed during the practical activities (and bring them back at the end of the course).
- Downloadable preconfigured virtual machine for post-course practical activities
- At the start of each session the trainer will interact with the trainees to ensure the course fits their expectations and correct if needed
- Any embedded systems engineer or technician with the above prerequisites.
- The prerequisites indicated above are assessed before the training by the technical supervision of the traineein his company, or by the trainee himself in the exceptional case of an individual trainee.
- Trainee progress is assessed in two different ways, depending on the course:
- For courses lending themselves to practical exercises, the results of the exercises are checked by the trainer while, if necessary, helping trainees to carry them out by providing additional details.
- Quizzes are offered at the end of sections that do not include practical exercises to verifythat the trainees have assimilated the points presented
- At the end of the training, each trainee receives a certificate attesting that they have successfully completed the course.
- In the event of a problem, discovered during the course, due to a lack of prerequisites by the trainee a different or additional training is offered to them, generally to reinforce their prerequisites,in agreement with their company manager if applicable.
Course Outline
- Cortex-M4 core basics.
- Radio subsystem blocks.
- RFO_LP vs RFO_HP paths.
- SMPS / VDDPA roles.
- RF pins & routing.
| Exercise: | SoC & RF map | |
- Package structure (Drivers/MW).
- SubGHz_Phy vs LoRaWAN.
- Board/clock templates.
- Minimal UART/LED setup.
- Build & debug checks.
| Exercise: | App skeleton | |
- HSE/LSE choices.
- PLL to SYSCLK.
- RF timing sources.
- CCIPR selectors.
- MCO for verification.
| Exercise: | Clock profiles | |
- TX power config steps.
- RFO_LP/H Pout ranges.
- DC-DC vs LDO impact.
- Antenna match notes.
- PA ramp & duty cycle.
| Exercise: | TX power table | |
- SF / BW / CR fields.
- Preamble & sync word.
- CAD / RX timeout.
- Payload length limits.
- CRC/Invert IQ flags.
| Exercise: | PHY ping-pong | |
- Radio state machine.
- IRQs: TX done / RX done.
- Timeouts & errors.
- TX/RX scheduling.
- Simple CLI prints.
| Exercise: | Event logger | |
- Project layout (MW/LmHandler).
- Join flow OTAA.
- ABP fallback basics.
- RX1/RX2 windows.
- Confirmed vs unconfirmed.
| Exercise: | Join + uplink | |
- EU868 vs US915 notes.
- Channels & sub-bands.
- Dwell time/duty cycle.
- LinkADRReq handling.
- Data rate plan.
| Exercise: | Region switch | |
- ADR enable/disable.
- SNR/RSSI reporting.
- Rx win params tuning.
- Confirmed retry policy.
- App port mapping.
| Exercise: | Downlink LED | |
- Keys & key derivation.
- DevEUI policy (from UID).
- NVM/bond storage.
- Reset and rejoin rules.
- Basic key hygiene.
| Exercise: | Key store check | |
- Simple sensor interface.
- Payload encode/FRMPayload.
- FPort selection.
- Uplink interval policy.
- Error counters.
| Exercise: | Temp uplink | |
- Sleep/Stop policies.
- Radio sleep/standby.
- RTC tickless scheme.
- Wake sources & latency.
- Measurement method.
| Exercise: | LP profiles | |
- RSSI/SNR basics.
- SF/BW impact.
- Antenna orientation.
- TX power vs battery.
- Simple path-loss model.
| Exercise: | Range walk | |
- Freq dev & bit-rate.
- Preamble & filter.
- Packet format.
- CRC settings.
- Sensitivity trade-off.
| Exercise: | FSK ping | |
- LinkADRReq/DevStatusReq.
- DutyCycleReq basics.
- RXParamSetupReq.
- NewChannelReq.
- Error handling.
| Exercise: | MAC trace | |
- Boot/slots concept.
- Image versioning.
- Failure recovery.
- Rollback notes.
- Basic script use.
| Exercise: | App OTA (demo) | |
- Region & channels fixed.
- TX power & duty policy.
- Keys/NVM procedure.
- RF test points noted.
- UID/serial/CRC tags.
| Exercise: | Self-audit | |
More
To book a training session or for more information, please contact us on info@ac6-training.com.
Registrations are accepted till one week before the start date for scheduled classes. For late registrations, please consult us.
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This course can be provided either remotely, in our Paris training center or worldwide on your premises.
Scheduled classes are confirmed as soon as there is two confirmed bookings. Bookings are accepted until 1 week before the course start.
Last update of course schedule: 3 October 2024
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