COM AM35 WinCE

FAQ

Q: I'm not able to start ActiveSync connection via USB?

A: 1. Connect USB cable 2. Go to Network and Dial-Up Connections 3. Launch USB connection

Q: How to save hive registry

A: Use SaveHiveRegistry tool, which is stored on development microSD card.

Downloads

CAN Demo Binary and Source

• CAN Demo binary (v1.1.0.0)
• CAN Demo source code (v1.1.0.0)

Software Development Kit

• WinEC 7 SDK for DHCOM AM35x core module

Audio Codec

Record input selection

Select Microphone as the recorder device

wavmixer –s IN 2 1

Select LineIn as the recorder device

wavmixer –s IN 2 0

Microphone boost

Enable 20dB Mic boost

wavmixer –s IN 3 1

USB Camera demo

Description

This DDrawTest application could be used to show USB camera live stream. The application can be found on the development microSD card.

How to change resolution

HKLM\Drivers\USB\ClientDrivers\Video_Class\[PreferredWidth]

HKLM\Drivers\USB\ClientDrivers\Video_Class\[PreferredHeight]

Note: Possible resolutions depends on the used usb camera.

CAN demo

Description

This sample application send CAN messages and tries to receive CAN messages during the duration time.

Note: The application uses the extended CAN ID.

Usage

candemo <options>

-d = duration time [ms]

-b = baudrate [kHz]

-idrx = receiver ID

-idtx = AM35x (transmitter) ID

default options

Baudrate default = 100kHz

Duration default = 10000ms

idrx (Receiver ID) default = 0x79

idtx (AM35x ID) default = 0x78

example

duration = 10sec., baudrate = 500kHz, idrx = 0x79 (121d), idtx = 0x78 (120d)

candemo -d10000 -b500 -idtx120 -idrx121

DHHalLib (function library)

The DHHalLib provides hardware related functions for Windows Embedded CE 6 and Windows Embedded Compact 7. All the functionality is available from the user mode.

Version numbers

Read DHHalLib version

unsigned long DHHalLibGetVersion()

Return value: unsigned long --> version number (e.g. 0x01040001 for version 1.4.0.1)

BSP version

unsigned long BSPGetVersion()

Return value: unsigned long --> version number (e.g. 0x01040001 for version 1.4.0.1)

Note: The version number information is stored in the following registry key: [HKEY_LOCAL_MACHINE\Ident] dword:"BSPVersionNumber"

Read image version

unsigned long WinCEImageGetVersion()

Return value: unsigned long --> version number (e.g. 0x01040001 for version 1.4.0.1)

I2C

Open

bool I2COpen(unsigned char cI2CPort)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

Return value: bool --> true = success; false = failed

Close

void I2CClose(unsigned char cI2CPort)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

Read

bool I2CRead( unsigned char cI2CPort, unsigned char cDevId, unsigned char cI2CReg, bool bSendStop, unsigned char *pOutBuffer)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

unsigned char iDevId = I2C device address (0..127)

unsigned char iI2CReg = I2C device register address (0..255)

bool bSendStop = NOT SUPPORTED

unsigned char *pOutBuffer = Pointer to the read byte

Return value: bool --> true = success; false = failed

Write

bool I2CWrite( unsigned char cI2CPort, unsigned char cDevId, unsigned char cI2CReg, unsigned char cValue, bool bSendStop)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

unsigned char iDevId = I2C device address (0..127)

unsigned char iI2CReg = I2C device register address (0..255)

unsigned char iValue = Value to be written

bool bSendStop = NOT SUPPORTED

Return value: bool --> true = success; false = failed

Read multiple bytes

bool I2CReadMultipleBytes( unsigned char cI2CPort, unsigned char cDevId, unsigned char cI2CReg, unsigned char cBytes, bool bSendStop, unsigned char *pOutBuffer)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

unsigned char iDevId = I2C device address (0..127)

unsigned char iI2CReg = I2C device register address (0..255)

unsigned char cBytes = Number of bytes to be read (max. 255)

bool bSendStop = NOT SUPPORTED

unsigned char *pOutBuffer = Pointer to the read buffer

Return value: bool --> true = success; false = failed

Write multiple bytes

bool I2CWriteMultipleBytes( unsigned char cI2CPort, unsigned char cDevId, unsigned char cI2CReg, unsigned char cBytes, bool bSendStop, unsigned char *pInBuffer)

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

unsigned char iDevId = I2C device address (0..127)

unsigned char iI2CReg = I2C device register address (0..255)

unsigned char cBytes = Number of bytes to be written (max. 255)

bool bSendStop = NOT SUPPORTED

unsigned char *pInBuffer = Pointer to the input buffer

Return value: bool --> true = success; false = failed

Bus scan

bool I2CProbe(unsigned char cI2CPort, unsigned char cDevId)

Description:

Scans the bus for the specified device address. Is this achievable, then the function returns "true".

Input values:

unsigned char cI2CPort = DHCOM I2C port number (1.. 2)

unsigned char iDevId = I2C device address (0..127)

Return value: bool --> true = success; false = failed

GPIO

Note: These functions can only access the DHCOM standard GPIOs. The mapping is done with the following enum.

  enum DHCOM_GPIOEnum
  {
    DHCOM_GPIO_A,
    DHCOM_GPIO_B,
    DHCOM_GPIO_C,
    DHCOM_GPIO_D,
    DHCOM_GPIO_E,
    DHCOM_GPIO_F,
    DHCOM_GPIO_G,
    DHCOM_GPIO_H,
    DHCOM_GPIO_I,
    DHCOM_GPIO_J,
    DHCOM_GPIO_K,
    DHCOM_GPIO_L,
    DHCOM_GPIO_M,
    DHCOM_GPIO_N,
    DHCOM_GPIO_O,
    DHCOM_GPIO_P,
    DHCOM_GPIO_Q,
    DHCOM_GPIO_R,
    DHCOM_GPIO_S,
    DHCOM_GPIO_T,
    DHCOM_GPIO_U,
    DHCOM_GPIO_V,
    DHCOM_GPIO_W,
    DHCOM_GPIO_NOT_DEFINED
  };

Direction

bool GPIOSetDirection( DHCOM_GPIOEnum eGpio, bool bInOut, bool bDefaultState)

Input values:

DHCOM_GPIOEnum eGpio = DHCOM GPIO pin name

bool bInOut = GPIO direction (1 = input / 0 = output)

bool bDefaultState = Default state (0 = low / 1 = high)

Return value: bool --> true = success; false = failed

Set state

void GPIOSetPin(DHCOM_GPIOEnum eGpio, bool bState)

Input values:

DHCOM_GPIOEnum eGpio = DHCOM GPIO pin name

bool bState = pin state ( 0 = low / 1 = high)

Read state

bool GPIOGetPin(DHCOM_GPIOEnum eGpio)

Input values:

DHCOM_GPIOEnum eGpio = DHCOM GPIO pin name

Return value: bool --> 0 = low; 1 = high

Memory

Read physical address

int ReadPhysicalAddress(int iPhyAddr, unsigned char cRegSize)

Input values:

int iPhyAddr = Physical address

unsigned char cRegSize = Register size (16 = 16bit; 32 = 32bit)

Return value: int --> current value of the physical address

Write physical address

int WritePhysicalAddress( int iPhyAddr, unsigned char cRegSize, int iValue, bool bReadBack)

Input values:

int iPhyAddr = physical address

unsigned char cRegSize = Register size (16 = 16bit; 32 = 32bit)

int iValue = Value to be written

bool bReadBack = true --> the current value is read back after the write; false --> the current value isn’t read back after the write

Return value: int --> content of the physical address after write, if bReadBack = true. Otherwise the function returns 0.

Map physical memory

PVOID UserMmMapIoSpace(ULONG PhysicalAddress, ULONG NumberOfBytes, BOOLEAN CacheEnable)

Note: Not supported from WinEC7.

UnMap physical memory

void UserMmUnmapIoSpace(PVOID BaseAddress, ULONG NumberOfBytes)

Note: Not supported from WinEC7.

Backlight

PWM

bool SetPWM(ULONG Period, ULONG DutyCycle)

Input values:

ULONG Period = Period in us

ULONG DutyCycle = Duty cycle in percent

Return value: bool --> true = success; false = failed

Touch screen

Calibrate touch

bool CalibrateTouch()

Return value: bool --> true = success; false = failed

Save calibration data

bool SaveTouchCalibrationData()

Description:

This function sets the registry entry [HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH] dword:"TouchCalibrationDone" to the value 1. For saving the value permanent please call SaveRegistry() afterwards.

Return value: bool --> true = success; false = failed

Clear calibration data

bool ClearTouchCalibrationData()

Description:

This function sets the registry entry [HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH] dword:"TouchCalibrationDone" to the value 0. For saving the value permanent please call SaveRegistry() afterwards.

Return value: bool --> true = success; false = failed

Registry

Save HIVE registry

bool SaveRegistry()

Return value: bool --> true = success; false = failed

Create backup

bool CreateRegistryBackup()

Description:

This function generates the files ave_HKLM_Reg.srg and Save_HKLCU_Reg.srg in the folder \Storage Card\. These files can be used at a later time to restore the registry.

Return value: bool --> true = success; false = failed

Restore backup

bool RestoreRegistryBackup()

Description:

This function restores the registry from the files Save_HKLM_Reg.srg and Save_HKLCU_Reg.srg in the folder \Storage Card\. Afterwards a restart is carried out automatically. If the backup files are not present, then the function returns the return value flase.

Return value: bool --> true = this never happens because a soft reset is performed; false = failed

Watchdog & Reset

Soft reset

void SoftReset()