Clarification on ULP co-processor REG_WR instruction

[kolban]

Am now studying the REG_WR instruction as found here:

http://esp-idf.readthedocs.io/en/latest ... l-register

The docs seem to say that I can write 8 bits from a ULP regsiter into a peripheral register control structure.

However, everything I see to read on it seems to show that the 8 bits of data one supplies are constant operands on the instruction. I'm not sensing that there is a mechanism to write the value of a register into a peripheral control structure.

[ESP_igrr]

That is correct, there is no such mechanism.