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@ironsheep ironsheep released this 05 Dec 00:42
· 10 commits to main since this release
v1.0.2
23e5e2a

Release of P2 Octo Serial port driver

Update: isp_mem_strings.spin2 fixed use of now reserved work in latest Spin2 def. (v37),

  • Services 1 to 8 ports from single cog running Pasm2
  • Tested initial configuration: 115,200 bps, N81
  • Validated with serial decoding logic analyzer
  • Tested Raspberry Pi <-> P2 - two serial pairs
  • Tested P2 <-> P2 - six more serial pairs
  • Added new method PUB txBytesEmpty(portHandle) : nbrCharsAvail for determining when new message will fit entirely in tx queue
  • Now tested P2 <-> P2 all 8 channels with CRC validation on all messages. No data loss or corruption at 115,200
  • Service rate per port is ~860nSec suggesting we likely can run > 2Mbaud on all 8-ports (but need to verify)

Known Issues

  • We need more characterization now that it's working so well.
  • We saw one issue with the 2nd serial port connected to a test RPi 4. The second serial port started the first transmission with a leading 0x00 byte. The cause has not been found.
  • When testing P2 <-> P2 with many ports we saw no such issues as is the same with the first of the two serial lines connected to the RPi

Full Changelog: v1.0.1...v1.0.2

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