3618a5352f
This lays the groundwork for implementing timed operations (#86). The M0 can be configured to automatically change modes when its byte count reaches a specific value. Checking the counter against the threshold and dispatching to the next mode is handled by a new `jump_next_mode` macro, which replaces the unconditional branches back to the start of the TX and RX loops. Making this change work requires some rearrangement of the code, such that the destinations of all conditional branch instructions are within reach. These branch instructions (`b[cond] label`) have a range of -256 to +254 bytes from the current program counter. For this reason, the TX shortfall handling is moved earlier in the file, and branches in the idle loop are restructured to use an unconditional branch to rx_start, which is furthest away. The additional code for switching modes adds 9 cycles to the normal RX path, and 10 to the TX path (the difference is because the dispatch in `jump_next_mode` is optimised for the longer RX path).
HackRF
This repository contains hardware designs and software for HackRF, a low cost, open source Software Defined Radio platform.
(photo by fd0 from https://github.com/fd0/hackrf-one-pictures)
principal author: Michael Ossmann mike@ossmann.com
Information on HackRF and purchasing HackRF: https://greatscottgadgets.com/hackrf/
Documentation
Documentation for HackRF can be viewed on Read the Docs. The raw documenation files for HackRF are in the docs folder in this repository and can be built locally by installing Sphinx Docs and running make html. Documentation changes can be submitted through pull request and suggestions can be made as GitHub issues.
Getting Help
Before asking for help with HackRF, check to see if your question is listed in the FAQ.
For assistance with HackRF general use or development, please look at the issues on the GitHub project. This is the preferred place to ask questions so that others may locate the answer to your question in the future.
We invite you to join our community discussions on Discord. Note that while technical support requests are welcome here, we do not have support staff on duty at all times. Be sure to also submit an issue on GitHub if you've found a bug or if you want to ensure that your request will be tracked and not overlooked.
If you wish to see past discussions and questions about HackRF, you may also view the mailing list archives.
GitHub issues on this repository that are labelled "technical support" by Great Scott Gadgets employees can expect a response time of two weeks. We currently do not have expected response times for other GitHub issues or pull requests for this repository.