Attempting to get SPI running on ESP8266 D1 mini along with RFM69/95 for USA - Git source link desired

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Thank you.

That file seems to have its contents commented out.

Backing up to the parent and taking a look, I found:

https://github.com/espruino/Espruino/blob/master/targets/esp8266/jshardware.c
L853

/**
 * Initialize the hardware SPI device.
 * On the ESP8266, hardware SPI is implemented via a set of pins defined
 * as follows:
 *
 * | GPIO   | NodeMCU | Name  | Function |
 * |--------|---------|-------|----------|
 * | GPIO12 | D6      | HMISO | MISO     |
 * | GPIO13 | D7      | HMOSI | MOSI     |
 * | GPIO14 | D5      | HSCLK | CLK      |
 * | GPIO15 | D8      | HCS   | CS       |
 *
 */

I might be getting breakout board pin reference D8 mixed up with ESP8266 pin label D15 as:

>NodeMCU.D8
=D15

But, if I attempt to return that code to either the GPIOxx or removing the 'NodeMCU' prefix, I'm greeted with:

ERROR: Cannot change pins used for flash chip

Conclusion: The only syntax available means is to use the prefix 'NodeMCU' for the pin assignments. This also agrees with the Arduino table, second to last image in #1 above.
I'm also guessing here that the 'D' prefix for the ESP8266 pin, is also the GPIOxx number and not the breakout board silkscreen pin number. e.g. D15 == GPIO15 but is silk screened D8

Now, back to why the external hardware isn't responding to the code running on the D1. . . .