Coding Questions and other Quandaries

File

Line

Function

/inc/class_error.php

153

errorHandler->error

/printthread.php(287) : eval()'d code

errorHandler->error_callback

/printthread.php

287

eval

/printthread.php

117

printthread_multipage

Code:

#Pin Config Table at EVA (06 Gecko String Write at 0x80001500)

#Config 1

.llong 0x0000000000000000

.short 0x0000

#Config 2

.llong 0x0000000000000000

.short 0x0000

#Config 3

.llong 0x0000000000000000

.short 0x0000

#Config 4

.llong 0x0000000000000000

.short 0x0000

#Config 5

.llong 0x0000000000000000

.short 0x0000

#Config 6

.llong 0x0000000000000000

.short 0x0000

#Config 7

.llong 0x0000000000000000

.short 0x0000

#Config 8

.llong 0x0000000000000000

.short 0x0000

#Config 9

.llong 0x0000000000000000

.short 0x0000

#Config 10

.llong 0x0000000000000000

.short 0x0000

Code:

#Get button(s) pressed, check against desired activator

lis r3, 0x8071

lhz r0, 0xFFFF8D40 (r3)

andi. r0, r0, 0xXXXX #Your desired button(s)

lis r3, 0x8000 #Before taking the branch, set r3 to its new value, upper 16 bits of EVA

bne- button_has_been_pressed



#Nothing Pressed, Reset Button Status

li r0, 0

stb r0, 0x3FF (r3)

blr #End C0



#Button Pressed, Adjust Button Status

#0 = Not Pressed

#1 = Pressed

button_has_been_pressed:

lbz r0, 0x3FF (r3)

cmpwi r0, 1

beqlr- #End C0

li r0, 1

stb r0, 0x3FF (r3)



#Update Pin Config tracker

lbz r5, 0x03FE (r3)

addi r5, r5, 1



#Check if it exceeded max config allowed (10 configs allowed in this source currently - 0, 1, 2 .. .. 9)

cmplwi r5, 10 #Check if we went beyond 9

blt+ store_tracker

li r5, 0 #Reset tracker byte

store_tracker:

stb r5, 0x03FE (r3)



#Multiple Pin config tracker byte by 0xA (10)

#0 x A = 0

#1 x A = A (10) #First button press uses this button config because of earlier "addi r5, r5, 1"

#2 x A = 14 (20)

#etc etc

mulli r5, r5, 0xA



#Use it as a indexed offset to load correct pin config from pin config table located at 0x80001500

#But first set the initial loop store address (0x81269C35 minus 0x57C = 0x812696B9)

#Each pin config byte address is equally separated by 0x57C

lis r9, 0x8126

ori r9, r9, 0x96B9



#Set first load address

ori r3, r3, 0x1500 #Starting point 0x80001500

add r3, r3, r5 #Points to correct pin config in the EVA based on the index number recently calculated

subi r3, r3, 1



#Set loop amount (10 for 10 pins)

li r0, 10

mtctr r0



#Update the pin config!

pin_write_loop:

lbzu r0, 0x1 (r3)

stbu r0, 0x57C (r9)

bdnz+ pin_write_loop



#The End

#blr #Uncomment if not compiling with pyiiasmh, adjust compiled code accordingly

Code:

#Get button(s) pressed, check against desired activator

lis r3, 0x8071

lhz r0, 0xFFFF8D40 (r3)

andi. r0, r0, 0xXXXX #Your desired button(s)

lis r3, 0x8000 #Before taking the branch, set r3 to its new value, upper 16 bits of EVA

bne- button_has_been_pressed



#Nothing Pressed, Reset Button Status

li r0, 0

stb r0, 0x3FF (r3)

blr #End C0



#Button Pressed, Adjust Button Status

#0 = Not Pressed

#1 = Pressed

button_has_been_pressed:

lbz r0, 0x3FF (r3)

cmpwi r0, 1

beqlr- #End C0

li r0, 1

stb r0, 0x3FF (r3)



#Grab Timebase Lower 32bits

mftbl r0



#Leave only the right side 10 bits for the pin config

andi. r0, r0, 0x03FF



#Setup Loop 1st time store address for stbu

lis r3, 0x8126 #(0x81269C35 minus 0x57C = 0x812696B9)

ori r3, r3, 0x96B9



#Set loop amount

li r5, 10

mtctr r5



#Shift the Time Base over to the left by 1 (for prep with shifting in loop iterations)

slwi r0, r0, 1



#The loop



#Shift what's in r0 by 1 bit to the right

shift_and_store_loop:

srwi r0, r0, 1



#Leave only bit 31 leftover

clrlwi r5, r0, 31



#Store the pin config bit as a byte; update the storing address by 0x57C every time

stbu r5, 0x057C (r3)

bdnz+ shift_and_store_loop



#End C0

#blr #Uncomment if NOT compiling with pyiiasmh, adjust compiled code accordingly