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--- boards:bpi [2020/08/05 04:52]
darron [Pickle Microchip PIC ICSP]
+++ boards:bpi [2023/11/05 16:15]
darron [Pickle Microchip PIC ICSP]
@@ Line 74: / Line 74: @@
 Along with USB serial we can use the BPi GPIOs to program PICMicros using [[projects:pickle|Pickle Microchip PIC ICSP]].
-Memory mapped I/O can be used to drive the GPIOs, however, the [[projects:gpio-bb|GPIO bit-bang driver for Linux]] may also be utilised on the BPi if preferred.
+Install [[projects:gpio-bb|GPIO bit-bang driver for Linux]].
 == Low Voltage Programming with VPP at 3V3 ==
@@ Line 104: / Line 104: @@
 (R3..R6) 470R.
-DEVICE=BPI
- or
 DEVICE=GPIO-BB
-IFACCE=/dev/gpio-bb
+IFACE=/dev/gpio-bb
 </code>
+===Issues===
+Excessive CPU load can be seen in kernel process
+`events_freezable_power'
+This has been seen in Debian BOOKWORM and goes back
+some time.
+Add the following to rc.local to solve this
+<code>
+rmmod sun4i_gpadc sun4i_gpadc_iio
+</code>
+NB blacklisting doesn't appear to work.
 === Resources ===
-[[http://www.bananapi.org/p/product.html|What is Banana Pi?]]\\
-[[http://dl.linux-sunxi.org/A20/A20%20user%20manual%20v1.3%2020141010.pdf|A20 User Manual]]\\
+[[https://www.armbian.com/bananapi/|Armbian]]
 [[http://linux-sunxi.org/A20/PIO|A20 I/O ports]]