BCM MX610H, User Manual

Page: 65 / 67

65
val=0;
addr=
0xE0690810
;
GetPhysLong((PBYTE) addr, &val);
// Read value from N_GPO1 port.
val = val & (DWORD)(~(1
<< 0)
);;
// Set N_GPO1 address (bit 0) to 0 (output “low”).
SetPhysLong((PBYTE)addr, val);
// Write back to N_GPO1 port.
4.1.2 Read input value from GPI
1. Read the value from GPI port.
2. Get the value of GPI address.
Example: Get N_GPI2 input value.
val=0;
GetPhysLong((PBYTE)
0xE0690860
, &val);
// Read value from N_GPI2 port.
val =
val & (DWORD)(1
<< 1
)) != 0
// Read N_GPI2 address (bit 1).
if (val) printf (“Input of N_GPI2 is High”);
else printf (“Input of N_GPI2 is Low”);
4.2 WDT Sample Code
The base address (WDT_BASE) of WDT configuration registers is 0xA10.
4.2.1 Set WDT Time Unit
val = Inportb (WD 0x05); // Read current WDT setting
val = val | 0x08; // minute mode. val = val & 0xF7 if second mode
Outportb (WD 0x05, val); // Write back WDT setting
4.2.2 Set WDT Time
Outportb (WD 0x06, Time ); // Write WDT time, value 1 to 255.
4.2.3 Enable WDT
val = Inportb (WD 0x0A); // Read current WDT_PME setting
val = val | 0x01; // Enable WDT OUT: WDOUT_EN (bit 0) set to 1.