DPC Module:DPC under Linux

From LEXWiKi

(Difference between revisions)
Jump to: navigation, search
Line 35: Line 35:
Exit : Exit the program.
Exit : Exit the program.
- 
== Sample Code Introduction ==
== Sample Code Introduction ==
-
//----------------------------------------------------------------------------------
+
1. Define SMBus register
-
#define HST_STS 0x00 // SMBus Host Status Register Offset
+
typedef unsigned char BYTE;
-
#define HST_CNT 0x02 // SMBus Host Contorl Register Offset
+
typedef unsigned short WORD;
-
#define HST_CMD 0x03 // SMBus Host Command Register Offset
+
typedef unsigned long DWORD;
-
#define XMIT_SLVA 0x04 // SMBus Host Address Register Offset
+
#define m_SMBusMapIoAddr 0x0500
-
#define HST_D0 0x05 // SMBus Host Data0 Register Offset
+
//----------------------------------------------------------------------------------
-
//----------------------------------------------------------------------------------
+
#define HST_STS 0x00 // SMBus Host Status Register Offset
-
#define SADD 0xb0
+
#define HST_CNT 0x02 // SMBus Host Contorl Register Offset
-
#define PWMFeq 0x01
+
#define HST_CMD 0x03 // SMBus Host Command Register Offset
-
#define PWMDuty 0x02
+
#define XMIT_SLVA 0x04 // SMBus Host Address Register Offset
 +
#define HST_D0 0x05 // SMBus Host Data0 Register Offset
 +
//----------------------------------------------------------------------------------
 +
#define SADD 0xb0
 +
#define PWMFeq 0x01
 +
#define PWMDuty 0x02
 +
 
 +
2. SMBusIoWrite
 +
void SMBusIoWrite(BYTE byteOffset,BYTE byteData)
 +
{
 +
outb( byteData , m_SMBusMapIoAddr + byteOffset);
 +
}
 +
 
 +
3. SMBusIoRead
 +
BYTE SMBusIoRead(BYTE byteOffset)
 +
{
 +
DWORD dwAddrVal;
 +
dwAddrVal = inb(m_SMBusMapIoAddr + byteOffset);
 +
return (BYTE)(dwAddrVal & 0x0FF);
 +
}
 +
 
 +
4. SetDutyCycle
 +
void SetDutyCycle(gint iDutyValue)
 +
{
 +
DWORD dwPortVal;
 +
SMBusIoWrite(HST_STS, 0xFE);
 +
SMBusIoWrite(XMIT_SLVA, SADD);
 +
SMBusIoWrite(HST_CMD, PWMDuty);
 +
dwPortVal = SMBusIoRead (HST_STS);
 +
dwPortVal = dwPortVal & 0x01;
 +
SMBusIoWrite(HST_D0, iDutyValue);
 +
SMBusIoWrite(HST_CNT, 0x48);
 +
}
 +
 
 +
5. SetFrequency
 +
void SetFrequency(gint iFrequency)
 +
{
 +
DWORD dwPortVal;
 +
SMBusIoWrite(HST_STS, 0xFE);
 +
SMBusIoWrite(XMIT_SLVA, SADD);
 +
SMBusIoWrite(HST_CMD, PWMFeq);
 +
dwPortVal = SMBusIoRead (HST_STS);
 +
dwPortVal = dwPortVal & 0x01;
 +
SMBusIoWrite(HST_D0, iFrequency);
 +
SMBusIoWrite(HST_CNT, 0x48);
 +
}

Revision as of 11:03, 14 April 2009

The Sample code source you can download from

Source file: DPCv2.4.1L.tar.gz

Binary file: DPC-binv2.4.1L.tar.gz

How to use this Demo Application

1. execute the ap, it will showed in system bar

Image:trayicon.jpg

Image:Dialog.jpg

2. Content explanation

Panel Type : Select panel what you try to adjust

Duty cycle : Brightness control, from 10 to 100

Select Area : After pressed this button, show another dialog which for you can select an area to light on panel

Image:AreaSelect.jpg

Panel off : light off the panel, (if you try to light on panel again, just click selected area or hotkey)

Hotkey Setting: Setting hotkey to light on panel, press the "OK" button after setting to completed

Image:HotKey.jpg

Install : Set the system to autorun this application when booting

Uninstall : Remove autorun this application when booting.

Exit : Exit the program.


Sample Code Introduction

1. Define SMBus register 

 typedef unsigned char  BYTE;
 typedef unsigned short WORD;
 typedef unsigned long  DWORD;
 #define m_SMBusMapIoAddr 0x0500
 //----------------------------------------------------------------------------------
 #define HST_STS	0x00	// SMBus Host Status        Register Offset
 #define HST_CNT	0x02	// SMBus Host Contorl       Register Offset
 #define HST_CMD	0x03	// SMBus Host Command 	    Register Offset
 #define XMIT_SLVA	0x04	// SMBus Host Address	    Register Offset
 #define HST_D0	0x05	// SMBus Host Data0         Register Offset
 //----------------------------------------------------------------------------------
 #define SADD	        0xb0
 #define PWMFeq	0x01
 #define PWMDuty	0x02

2. SMBusIoWrite 

 void SMBusIoWrite(BYTE byteOffset,BYTE byteData)
 {
     outb( byteData , m_SMBusMapIoAddr + byteOffset);
 }

3. SMBusIoRead 

 BYTE SMBusIoRead(BYTE byteOffset)
 {
     DWORD dwAddrVal;
     dwAddrVal = inb(m_SMBusMapIoAddr + byteOffset);
     return (BYTE)(dwAddrVal & 0x0FF);
 }

4. SetDutyCycle 

 void SetDutyCycle(gint iDutyValue)
 {
     DWORD dwPortVal;
     SMBusIoWrite(HST_STS, 0xFE);
     SMBusIoWrite(XMIT_SLVA, SADD);
     SMBusIoWrite(HST_CMD, PWMDuty);
     dwPortVal = SMBusIoRead (HST_STS);
     dwPortVal = dwPortVal & 0x01;
     SMBusIoWrite(HST_D0, iDutyValue);
     SMBusIoWrite(HST_CNT, 0x48);
 }

5. SetFrequency 

 void SetFrequency(gint iFrequency)
 {
     DWORD dwPortVal;
     SMBusIoWrite(HST_STS, 0xFE);
     SMBusIoWrite(XMIT_SLVA, SADD);
     SMBusIoWrite(HST_CMD, PWMFeq);
     dwPortVal = SMBusIoRead (HST_STS);
     dwPortVal = dwPortVal & 0x01;
     SMBusIoWrite(HST_D0, iFrequency);
     SMBusIoWrite(HST_CNT, 0x48);
 }
Retrieved from "http://tprd.info/lexwiki/index.php/DPC_Module:DPC_under_Linux"
Personal tools