Add support for the HC12

TG9541 / stm8ef

STM8 eForth - a user friendly Forth for simple µCs with docs

https://github.com/TG9541/stm8ef/wiki

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Add support for the HC12 #24

Open TG9541 opened 7 years ago

TG9541 commented 7 years ago

al177 forked stm8ef and added initial board support for the HC12 (Si4463 not yet working).

To do:

reverse engineer the HC12
enable a wireless Forth console on a HC12 through an unmodified HC12
write docs

TG9541 commented 7 years ago

Approach:

connect logic analyzer to the following signals: nSEL, SCLK, SDO, SDI, nIRQ, GPIO0, and GPIO1
Establish connection to a 2nd HC12, and make recordings of the following situations:
- power up to capture initialitzation
- send "enter" and receive " ok" to capture basic communication
- send "enter" and receive a stream of data (e.g. WORDS)
make the communication more readable with an AWK script
extract Si4463 initialization data by comparing multiple recordings with an AWK script
analyze initialization and communication sequences

Refer to Board HC12 for first results.

soyebean commented 4 years ago

Hello, can you give me a detailed configuration of HC12？ thank you

sergey210982 commented 4 years ago

сб, 15 авг. 2020 г. в 16:44, soyebean notifications@github.com:

Hello, can you give me a detailed configuration of HC12？ thank you

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/TG9541/stm8ef/issues/24#issuecomment-674358311, or unsubscribe https://github.com/notifications/unsubscribe-auth/AFVMS5ICBVGKXJZ7HQ7KHP3SAYVDHANCNFSM4DJUGUPQ .

TG9541 commented 4 years ago

@soyebean I had worked on the HC12 and I still have an experimental setup for analyzing the SPI communication between the radio chip and the STM8 in the basement but I never managed to finish it. I'd consider starting over if someone would be willing to share the effort.

soyebean commented 4 years ago

I want to communicate with HC-12 based on 51 single chip microcomputer si4438 wireless chip, but I don't know the preamble pattern and synchronization word of HC-12.I have some HC-12 spi data, but I don't know how to analyze it.

I don’t know why SCLK is a 4-bit or 5-bit clock.

TG9541 commented 4 years ago

Analyzing that data is one of the problems: the datasheet assumes that one uses "Simplicity Studio" and I don't know of any decoder. The description above describes how I had planned to approach reverse-engineering.