added alternate GPIO assignments to support CAN hats; renamed overlay…

… for v2.90

FileSets/gpio_list

@@ -1,45 +1,51 @@
-#### modified for use by the RpiGpio package on Raspberry PI platforms ONLY
+#### LEGACY assignments for Relay 1, 5 and 6 and Dig In 4
+#### WILL CONFLICT with second channel on WaveShare dual channel CANbus hats, and possiblly others
+####	interrupts, chip selects and second SPI bus
+#### single channel CANbus hats should be OK with these assignments
+####	this includes using only the first channel of the WaveShare dual channel hats
+#### note that WaveShare sells two different dual channel CANbus hats: the non FD and FD (flexible data rate)
 
-# This is a list of gpio pins, set by the script /etc/rcS.d/S90gpio_pins.sh
+### for use by the RpiGpio package on Raspberry PI platforms ONLY
+
+# This is a list of GPIO pins, set by the script /etc/rcS.d/S90gpio_pins.sh
 # They are documented at: https://github.com/victronenergy/venus/wiki/bbb-gpio
 # Format: <pin_number> <direction: in/out> <name>
 #
 # The <name> part is used to create an symlink in /dev/gpio.
 
 # relays are active HIGH
-# Relay 1   Pin 40 / GPIO 21
+# Relay 1   GPIO 21 / header pin 40
 21  out relay_1
-# Relay 2 Pin 11 / GPIO 17
+# Relay 2   GPIO 17 / header pin 11
 17  out relay_2
 
-# Relay 3 Pin 13 / GPIO 27
+# Relay 3   GPIO 27 / header pin 13
 27  out relay_3
-# Relay 4 Pin 15 / GPIO 22
+# Relay 4   GPIO 22 / header pin 15
 22  out relay_4
-# Relay 5 Pin 16 / GPIO 23
+# Relay 5   GPIO 23 / header pin 16
 23  out relay_5
-# Relay 6 Pin 18 / GPIO 24
+# Relay 6   GPIO 24 / header pin 18
 24  out relay_6
 
 # these have pull UPs
-# Digital input 1   Pin 29 / GPIO 05
+# Digital input 1   GPIO 5 / header pin 29
 5   in digital_input_1
-# Digital input 2   Pin 31 / GPIO 06
+# Digital input 2   PIO 6 / header pin 31
 6   in digital_input_2
 
-
 # in stock code these have pull DOWNs
 #### modified to pull UPs by the GPIO overlay that is installed as part of this package
 
-# Digital input 3   Pin 33 / GPIO 13
+# Digital input 3   GPIO 13 / header pin 33
 13  in digital_input_3
-# Digital input 4   Pin 35 / GPIO 19
+# Digital input 4   GPIO 19 / header pin 35
 19  in digital_input_4
-# Digital input 5   Pin 37 / GPIO 26
+# Digital input 5   GPIO 26 / header pin 37
 26  in digital_input_5
 
 #### Gracefull shutdown input
 #### Note this input is NOT added to the available I/O used by Venus OS !!!!
-# Pin 36 / GPIO 16
+# GPIO 16 / header pin 36
 16  in digital_input_6
 

FileSets/gpio_listForCanHats

@@ -0,0 +1,59 @@
+#### ALTERNATE assignments for Relay 1, 5 and 6 and Dig In 4
+#### avoids conflict with second CANbus hat interface
+####	supports Waveshare dual CAN and dual CAN FD
+####		should work with CAN FD mode A or mode B
+####		 but not more than 1 CAN FD hat board
+####	NO i2c bus is possible since relay 1 and dig in 4 use these pins !!!!
+####	must use spi1-1cs.dtbo overlay, NOT spi1-3cs.dtbo because of conflicts
+####		digital input 3 conflicts with spi0-1 interrupt on CAN FD hat
+####		Shutdown monitor shutdown GPIO spi1-2 chip select on CAN FD hat
+####		relay 2 conflicts wih spi1-1 chip select on CAN FD hat
+####		relay 4 conflicts wih spi1-2 interrupt on CAN FD hat
+#
+#### other conflicts must be resolved manually by carefully selecting hat boards
+####	and creating a custom gpio_list file
+
+#### for use by the RpiGpio package on Raspberry PI platforms ONLY
+
+# This is a list of GPIO pins, set by the script /etc/rcS.d/S90gpio_pins.sh
+# They are documented at: https://github.com/victronenergy/venus/wiki/bbb-gpio
+# Format: <pin_number> <direction: in/out> <name>
+#
+# The <name> part is used to create an symlink in /dev/gpio.
+
+# relays are active HIGH
+# Relay 1   GPIO 2 / header pin 3 ALTERNATE assignment
+2  out relay_1
+# Relay 2   GPIO 17 / header pin 11
+17  out relay_2
+
+# Relay 3   GPIO 27 / header pin 13
+27  out relay_3
+# Relay 4   GPIO 22 / header pin 15
+22  out relay_4
+# Relay 5   GPIO 12 / header pin 32 ALTERNATE assignment
+12  out relay_5
+# Relay 6   GPIO 4 / header pin 7 ALTERNATE assignment
+4  out relay_6
+
+# these have pull UPs
+# Digital input 1   GPIO 5 / header pin 29
+5   in digital_input_1
+# Digital input 2   GPIO 6 / header pin 31
+6   in digital_input_2
+
+# in stock code these have pull DOWNs
+#### modified to pull UPs by the GPIO overlay that is installed as part of this package
+
+# Digital input 3   GPIO 13 / header pin 33
+13  in digital_input_3
+# Digital input 4   GPIO 3 / header pin 5 ALTERNATE assignment
+3  in digital_input_4
+# Digital input 5   GPIO 26 / header pin 37
+26  in digital_input_5
+
+#### Gracefull shutdown input
+#### Note this input is NOT added to the available I/O used by Venus OS !!!!
+# GPIO 16 / header pin 36
+16  in digital_input_6
+

OverlayInstructions

@@ -1,15 +1,11 @@
 
 compile:
-  dtc -@ -I dts -O dtb -o VenusGpioOverlay.dtb VenusGpioOverlay.dts
------------ or ??? -----------
   dtc -@ -I dts -O dtb -o VenusGpioOverlay.dtbo VenusGpioOverlay.dts
 
-Put it in /boot/overlays:
-    sudo cp VenusGpioOverlay.dtb /boot/overlays/VenusGpioOverlay.dtb
------------ or ??? -----------
-    sudo cp VenusGpioOverlay.dtbo /boot/overlays/VenusGpioOverlay.dtbo
+Put it in /u-boot/overlays:
+    sudo cp VenusGpioOverlay.dtbo /u-boot/overlays/VenusGpioOverlay.dtbo
 
-Add a line to /boot/config.txt:
+Add a line to /u-boot/config.txt:
     dtoverlay=VenusGpioOverlay
 
-Note /boot might be /u-boot
+Note /u-boot typically appears as /boot when the SD card is mounted on a computer