1. JMRI addition of C/MRI node: "Add node" (SMINI), if in the Arduino code: if cmri address = 1, hence JMRI address = 1. Is this correct? 2. In the table with overview of outputs, addressing is (example) 1001 for node address 1 and the address for bit 0 (for example named "L1"). This for an output (lamp) to bit 0. In Arduino this bit must be mapped to a physical digital I/O pin. Is this correct too? 3. So, if it were CMRI address 0 (Arduino default for the CMRI.h library) for bit 5 then the table address should be 0006? Is that correct too? 4. And what if you want to command lamp number 20 (of , for example, node with CMRI address 0) of the possible 24 outputs of an SMINI node? Must that be (in the lamp table) address 0021?
Note that there are 24 inputs -- JMRI numbering 1-24, and 48 outputs JMRI numbering 1-48 If you are using my sketch (trainboard link), a. the first 1-16 outputs are the turnouts 0-15 on the pca9685. b. LEDs and other outputs connected to mcp23017 are JMRI numbers 17-32 and 33-48 c. And the I2C addresses on the modules will need to match the Arduino sketch. d. The first mcp23017 is for JMRI inputs 1-16 (17-24 were not used) e. In JMRI, node 1 should be in agreement with the Arduino sketch parameter: #define CMRI_ADDR 1 Use the JMRI menu item 485 > List CMRI Assignments -- note the node number drop-down and the selection for input or output. In defining the items in JMRI, these details were quite helpful: Expresso Arduino You may want to define your LED output bits as turnouts... for historical reasons: https://www.jmri.org/help/en/html/tools/Lights.shtml#what
Your answer e. validates my assumption #1, thank you. Now what about the numbering used by JMRI in the tables? I.e. my questions 2 through 4? I notice in your very interesting link that you mention JMRI number assignements: 001 through 048: are these the addresses as shown in the corresponding JMRI tables for node # 1?
For Node 1, I have numbering CT1001-CT1048 and CS1001-CS1016 -- turnouts in CT1001-CT1016; LEDs or digital outputs CT1017-CT1048 -- sensors in CS1001-CS1016 For Node 2, I have numbering CT2001-CT2048 and CS2001-CS2016 -- turnouts in CT2001-CT2016; LEDs or digital outputs CT2017-CT2048 -- sensors in CS2001-CS2016 It is easy to get off by 1, whether you are looking at nodes or pins. Set up a few to confirm that it works the way you think it should, and rework as needed. Perhaps you can use the JMRI sequential numbering. Regardless of whether I am using all the pins, I define them all in JMRI. Then I am able to toggle adjacent buttons in JMRI should I have connected to a different pin than expected. And a newly connected accessory is already in the JMRI table.
