Hi
I found the following code and although it compiles the example app
never exits while waiting for HALT. And after that all other example
apps no longer work.
#define GPIO0 0x44e07000
#define GPIO1 0x4804c000
#define GPIO2 0x481ac000
#define GPIO_OE 0x134
#define GPIO_DATAIN 0x138
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
SET r2, 12 // set bit 12
SBBO r2, r3, 0, 4
MOV r3, GPIO1 | GPIO_DATAIN
LBBO r2, r3, 0, 4 // Store register contents into r2
// r2 contains of all GPIO1, so now you can inspect the value of
bit 12 as desired
HALT
can anyone tell what’s wrong or another way of doing this?
/Jacob
--
"In acting as if life has meaning, we will find, thank God, that it does"
- John Cottingham
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