Unit Platform

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Description

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To be documented

Constants

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To be documented

Type definitions

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To be documented

Public variables

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To be documented

Function declarations

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Initialization functions

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procedure PlatformInit;

Description: Initialize platform specific information for the current hardware

Note	None documented

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procedure CPUInit;

Description: Initialize the CPU including performance features etc (Where Applicable)

Note	None documented

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procedure FPUInit;

Description: Initialize the Floating Point Processor Unit (Where Applicable)

Note	None documented

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procedure GPUInit;

Description: Initialize the Graphics Processor Unit (Where Applicable)

Note	None documented

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procedure MMUInit;

Description: Initialize the Memory Management Unit (Where Applicable)

Note	None documented

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procedure SMPInit;

Description: Initialize the Symetric Multi Processor support (Where Applicable)

Note	Secondary CPU boot is performed by SecondaryInit in Threads

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procedure CacheInit;

Description: Initialize CPU Data and Instruction Caching (Where Applicable)

Note	None documented

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procedure BoardInit;

Description: Initialize Board specific information (Where Applicable)

Note	None documented

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procedure MemoryInit;

Description: Initialize Memory specific information (Where Applicable)

Note	None documented

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procedure ClockInit;

Description: Initialize the Clock handling

Note	None documented

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procedure PowerInit;

Description: Initialize Power management (Where Applicable)

Note	None documented

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procedure MailboxInit;

Description: Initialize Mailbox access (Where Applicable)

Note	None documented

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procedure InterruptInit;

Description: Initialize Interrupt handling

Note	None documented

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procedure PeripheralInit;

Description: Initialize Peripheral devices (Where Applicable)

Note	None documented

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procedure ParseBootTags;

Description: Parse any boot tag information passed by the bootloader (Where Applicable)

Note	None documented

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procedure ParseCommandLine;

Description: Setup argc, argv and cmdline and process known command line options (Where Applicable)

Note	None documented

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procedure ParseEnvironment;

Description: Setup envp and process known environment options (Where Applicable)

Note	None documented

Boot functions

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procedure BootBlink; inline;

Description: Blink the Activity LED (Where Applicable)

Note	Intended for startup diagnostics when bootstrapping a new board

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procedure BootOutput(Value:LongWord); inline;

Description: Output boot time information (Where Applicable)

Note	Intended for startup diagnostics when bootstrapping a new board

LED functions

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procedure PowerLEDEnable; inline;

Description: Enable the Power LED (Where Applicable)

Note	None documented

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procedure PowerLEDOn; inline;

Description: Turn On the Power LED (Where Applicable)

Note	None documented

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procedure PowerLEDOff; inline;

Description: Turn Off the Power LED (Where Applicable)

Note	None documented

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procedure ActivityLEDEnable; inline;

Description: Enable the Activity LED (Where Applicable)

Note	None documented

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procedure ActivityLEDOn; inline;

Description: Turn On the Activity LED (Where Applicable)

Note	None documented

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procedure ActivityLEDOff; inline;

Description: Turn Off the Activity LED (Where Applicable)

Note	None documented

Counter functions (Timer device)

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function CounterAvailable:Boolean; inline;

Description: Check if a counter is currently available

Note	None documented

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function CounterRead:LongWord; inline;

Description: Read the current value of the default counter

Return	The 32 bit current value of the counter or 0 on failure

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function CounterRead64:Int64; inline;

Description: Read the current value of the default counter

Return	The 64 bit current value of the counter or 0 on failure

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function CounterWait:LongWord; inline;

Description: Wait for the current interval to expire on the default counter

Return	ERROR_SUCCESS if the interval expired or another error code on failure

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function CounterEvent(Callback:TCounterCallback; Data:Pointer):LongWord; inline;

Description: Schedule a function to be called when the current interval expires on the default counter

Callback	The function to be called when the interval expires
Data	A pointer to be pass to the function when the interval expires (Optional)
Return	ERROR_SUCCESS if the callback was scheduled successfully or another error code on failure

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function CounterCancel:LongWord; inline;

Description: Cancel a previously scheduled event callback function on the default counter

Return	ERROR_SUCCESS if the callback was cancelled successfully or another error code on failure

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function CounterGetRate:LongWord; inline;

Description: Get the current clock rate in Hz of the default counter

Return	The current clock rate in Hz or 0 on failure

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function CounterSetRate(Rate:LongWord):LongWord; inline;

Description: Set the current clock rate in Hz of the default counter

Rate	The clock rate in Hz to set
Return	ERROR_SUCCESS if the clock rate was set or another error code on failure

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function CounterGetInterval:LongWord; inline;

Description: Get the current interval in ticks of the default counter

Return	The current interval in ticks or 0 on failure (or not set)
Note	The tick rate is determined by the clock rate

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function CounterSetInterval(Interval:LongWord):LongWord; inline;

Description: Set the current interval in ticks of the default counter

Interval	The interval in ticks to set
Return	ERROR_SUCCESS if the interval was set or another error code on failure
Note	The tick rate is determined by the clock rate

Mailbox functions

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function MailboxReceive(Mailbox,Channel:LongWord):LongWord; inline;

Description: Receive from specified mailbox on specified channel

Note	None documented

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procedure MailboxSend(Mailbox,Channel,Data:LongWord); inline;

Description: Send to specified mailbox on specified channel

Note	None documented

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function MailboxCall(Mailbox,Channel,Data:LongWord; var Response:LongWord):LongWord; inline;

Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel

Note	None documented

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function MailboxCallEx(Mailbox,Channel,Data:LongWord; var Response:LongWord; Timeout:LongWord):LongWord; inline;

Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel

Note	None documented

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function MailboxPropertyCall(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord):LongWord; inline;

Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel

Note	None documented

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function MailboxPropertyCallEx(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord; Timeout:LongWord):LongWord; inline;

Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel

Note	None documented

Random number functions

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function RandomAvailable:Boolean; inline;

Description: Check if a hardware random number generator is currently available

Note	The software random number generator from the RTL is always available

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procedure RandomSeed(Seed:LongWord); inline;

Description: To be documented

Note	None documented

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function RandomReadLongInt(Limit:LongInt):LongInt; inline;

Description: To be documented

Note	None documented

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function RandomReadInt64(Limit:Int64):Int64; inline;

Description: To be documented

Note	None documented

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function RandomReadExtended:Extended; inline;

Description: To be documented

Note	None documented

Watchdog Timer Functions

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function WatchdogAvailable:Boolean; inline; 

Description: Check if a watchdog timer is currently available

Note	None documented

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function WatchdogStart(Milliseconds:LongWord):LongWord; inline;

Description: To be documented

Note	None documented

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function WatchdogStop:LongWord; inline;

Description: To be documented

Note	None documented

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function WatchdogRefresh(Milliseconds:LongWord):LongWord; inline;

Description: To be documented

Note	None documented

Interrupt request (IRQ) functions

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function RequestIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; Parameter:Pointer):LongWord; inline;

Description: Request registration of the supplied handler to the specified IRQ number

Note	If the IRQ number is already registered then the request will fail

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function ReleaseIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; Parameter:Pointer):LongWord; inline;

Description: Request deregistration of the supplied handler from the specified IRQ number

Note	If the IRQ number is not currently registered then the request will fail

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function RequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord; inline;

Description: Request registration of the supplied extended handler to the specified IRQ number

Note	If the IRQ number is already registered then the request will fail

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function ReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord; inline;

Description: Request deregistration of the supplied extended handler from the specified IRQ number

Note	If the IRQ number is not currently registered then the request will fail

Fast interrupt request (FIQ) functions

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function RequestFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; Parameter:Pointer):LongWord; inline;

Description: Request registration of the supplied handler to the specified FIQ number (Where Applicable)

Note	If the FIQ number is already registered then the request will fail

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function ReleaseFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; Parameter:Pointer):LongWord; inline;

Description: Request deregistration of the supplied handler from the specified FIQ number (Where Applicable)

Note	If the FIQ number is not currently registered then the request will fail

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function RequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord; inline;

Description: Request registration of the supplied extended handler to the specified FIQ number (Where Applicable)

Note	If the FIQ number is already registered then the request will fail

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function ReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord; inline;

Description: Request deregistration of the supplied extended handler from the specified FIQ number (Where Applicable)

Note	If the FIQ number is not currently registered then the request will fail

System call (Software Interrupt or SWI) functions

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procedure SystemCall(Number:LongWord; Param1,Param2,Param3:PtrUInt); inline;

Description: Perform a System Call function with the supplied parameters (Where Applicable)

Number	The System Call number to be called
Param1	The first parameter to pass to the function (Optional / Function defined)
Param2	The second parameter to pass to the function (Optional / Function defined)
Param3	The third parameter to pass to the function (Optional / Function defined)

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function RegisterSystemCall(Number:LongWord; Handler:TSystemCallHandler):LongWord; inline;

Description: Request registration of the supplied handler to the specified System Call number (Where Applicable)

Number	The System Call number to be registered
Handler	The handler function to be registered
Note	If the System Call number is already registered then the request will fail

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function DeregisterSystemCall(Number:LongWord; Handler:TSystemCallHandler):LongWord; inline;

Description: Request deregistration of the supplied handler from the specified System Call number (Where Applicable)

Number	The System Call number to be deregistered
Handler	The handler function to be deregistered
Note	If the System Call number is not currently registered then the request will fail

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function RegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord; inline;

Description: Request registration of the supplied extended handler to the specified System Call number (Where Applicable)

CPUID	The CPU ID to register the System Call against (or CPU_ID_ALL)
Number	The System Call number to be registered
Handler	The handler function to be registered (Optional) (Handler or HandlerEx must be specified, not both)
HandlerEx	The extended handler function to be registered (Optional) (Handler or HandlerEx must be specified, not both)
Note	If the System Call number is already registered then the request will fail

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function DeregisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord; inline;

Description: Request deregistration of the supplied extended handler from the specified System Call number (Where Applicable)

CPUID	The CPU ID to deregister the System Call from (or CPU_ID_ALL)
Number	The System Call number to be deregistered
Handler	The handler function to be deregistered (Optional) (Handler or HandlerEx must be specified, not both)
HandlerEx	The extended handler function to be deregistered (Optional) (Handler or HandlerEx must be specified, not both)
Note	If the System Call number is not currently registered then the request will fail

Interrupt entry functions

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function GetInterruptCount:LongWord; inline;

Description: Get the number of interrupt entries for the current platform

Note	None documented

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function GetInterruptStart:LongWord; inline;

Description: Get the starting number of interrupt entries for the current platform

Note	None documented

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function GetInterruptEntry(Number:LongWord):TInterruptEntry; inline;

Description: Get the interrupt entry for the specified interrupt number

Note	None documented

Local interrupt entry functions

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function GetLocalInterruptCount:LongWord; inline;

Description: Get the number of local interrupt entries for the current platform (Where Applicable)

Note	None documented

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function GetLocalInterruptStart:LongWord; inline;

Description: Get the starting number of local interrupt entries for the current platform (Where Applicable)

Note	None documented

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function GetLocalInterruptEntry(CPUID,Number:LongWord):TInterruptEntry; inline;

Description: Get the local interrupt entry for the specified interrupt number (Where Applicable)

Note	None documented

System call entry functions

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function GetSystemCallCount:LongWord; inline;

Description: Get the number of system call entries for the current platform (Where Applicable)

Note	None documented

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function GetSystemCallEntry(Number:LongWord):TSystemCallEntry; inline;

Description: Get the system call entry for the specified system call number (Where Applicable)

Note	None documented

System functions

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function SystemRestart(Delay:LongWord):LongWord; inline;

Description: Restart the system

Note	None documented

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function SystemShutdown(Delay:LongWord):LongWord; inline;

Description: Shutdown the system

Note	None documented

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function SystemGetUptime:Int64; inline;

Description: Get the current system up time in 100 nanosecond ticks since 1/1/1601

Return	The current system up time
Note	This is the same time format as Windows FILE_TIME and is intended to allow compatibility with file system functions etc

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function SystemGetCommandLine:String; inline;

Description: Get the current command line

Note	None documented

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function SystemGetEnvironment:Pointer; inline;

Description: Get the current environment

Note	None documented

CPU Functions

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function CPUGetArch:LongWord; inline;

Description: Get the CPU architecture for this board

Note	None documented

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function CPUGetType:LongWord; inline;

Description: Get the CPU type for this board

Note	None documented

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function CPUGetBoot:LongWord; inline;

Description: Get the boot CPU for this board

Note	None documented

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function CPUGetMask:LongWord; inline;

Description: Get the CPU mask for this board

Note	None documented

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function CPUGetCount:LongWord; inline;

Description: Get the CPU count for this board

Note	None documented

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function CPUGetMode:LongWord; inline;

Description: Get the current CPU moded

Note	The return value is specific to the CPU type

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function CPUGetState:LongWord; inline;

Description: Get the current CPU state

Note	None documented

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function CPUGetCurrent:LongWord; inline;

Description: Get the current CPU ID

Note	None documented

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function CPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord; inline;

Description: Get the memory start and size available to the CPU

Note	None documented

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function CPUGetPercentage(CPUID:LongWord):Double; inline;

Description: Get the last second ulitization of the specified CPU in percentage

CPUID	The CPU to get utilization from or CPU_ID_ALL for average of all CPUs

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function CPUGetUtilization(CPUID:LongWord):LongWord; inline;

Description: Get the last second ulitization of the specified CPU

CPUID	The CPU to get utilization from or CPU_ID_ALL for average of all CPUs

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function CPUGetModel:LongWord; inline;

Description: Get the CPU model of the current CPU

Note	None documented

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function CPUGetRevision:LongWord; inline;

Description: Get the CPU revision of the current CPU

Note	The return value is specific to the CPU type and model

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function CPUGetDescription:String; inline;

Description: Get the CPU description of the current CPU

Note	None documented

FPU functions

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function FPUGetType:LongWord; inline;

Description: Get the FPU type for this board

Note	None documented

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function FPUGetState:LongWord; inline;

Description: Get the current FPU state

Note	None documented

GPU functions

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function GPUGetType:LongWord; inline;

Description: Get the GPU type for this board

Note	None documented

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function GPUGetState:LongWord; inline;

Description: Get the current GPU state

Note	None documented

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function GPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord; inline;

Description: Get the memory start and size available to the GPU

Note	None documented

Cache functions

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function L1CacheGetType:LongWord; inline;

Description: Get the L1 cache type for this board

Note	None documented

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function L1DataCacheGetSize:LongWord; inline;

Description: Get the L1 data cache size for this board

Note	If data cache is not supported, the size returned is zero. If separate data and instruction caches are not supported, the size returned is the unified size.

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function L1DataCacheGetLineSize:LongWord; inline;

Description: Get the L1 data cache line size for this board

Note	If data cache is not supported, the size returned is zero. If separate data and instruction caches are not supported, the size returned is the unified size.

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function L1InstructionCacheGetSize:LongWord; inline; 

Description: Get the L1 instruction cache size for this board

Note	If instruction cache is not supported, the size returned is zero. If separate data and instruction caches are not supported, the size returned is the unified size.

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function L1InstructionCacheGetLineSize:LongWord; inline;

Description: Get the L1 instruction cache line size for this board

Note	If instruction cache is not supported, the size returned is zero. If separate data and instruction caches are not supported, the size returned is the unified size.

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function L2CacheGetType:LongWord; inline;

Description: Get the L2 cache type for this board

Note	None documented

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function L2CacheGetSize:LongWord; inline;

Description: Get the L2 cache size for this board

Note	If L2 cache is not supported, the size returned is zero

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function L2CacheGetLineSize:LongWord; inline;

Description: Get the L2 cache line size for this board

Note	If L2 cache is not supported, the size returned is zero

Board functions

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function BoardGetType:LongWord; inline;

Description: Get the current Board type

Note	None documented

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function BoardGetModel:LongWord; inline;

Description: Get the current Board model

Note	None documented

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function BoardGetSerial:Int64; inline;

Description: Get the current Board serial number

Note	None documented

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function BoardGetRevision:LongWord; inline;

Description: Get the current Board revision number

Note	None documented

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function BoardGetMACAddress:String; inline;

Description: Get the current Board MAC address (Where Applicable)

Note	None documented

Firmware functions

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function FirmwareGetRevision:LongWord; inline;

Description: Get the current board Firmware Revision

Note	None documented

Machine functions

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function MachineGetType:LongWord; inline;

Description: Get the current Machine type

Note	None documented

Memory functions

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function MemoryGetBase:PtrUInt; inline;

Description: Get the base address of system memory

Note	None documented

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function MemoryGetSize:LongWord; inline;

Description: Get the total size of system memory

Note	None documented

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function MemoryGetPageSize:LongWord; inline;

Description: Get the page size of system memory

Note	None documented

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function MemoryGetLargePageSize:LongWord; inline;

Description: Get the large page size of system memory (Where Applicable)

Note	None documented

Power functions

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function PowerOn(PowerId:LongWord):LongWord;

Description: Power On the specified device

Note	None documented

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function PowerOff(PowerId:LongWord):LongWord;

Description: Power Off the specified device

Note	None documented

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function PowerGetWait(PowerId:LongWord):LongWord; inline;

Description: Get the enable wait time in Microseconds of the specified device

Note	None documented

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function PowerGetState(PowerId:LongWord):LongWord; inline;

Description: Get the power state of the specified device

Note	None documented

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function PowerSetState(PowerId,State:LongWord; Wait:Boolean):LongWord; inline;

Description: Set the power state of the specified device (Optionally waiting for ready)

Note	None documented

Clock functions

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function ClockGetTime:Int64;

Description: Get the current system time in 100 nanosecond ticks since 1/1/1601

Return	The current system time
Note	This is the same time format as Windows FILE_TIME and is intended to allow compatibility with file system functions etc. By default the time returned by this function is considered to be UTC but the actual conversion between UTC and local time is handled at a higher level.

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function ClockSetTime(const Time:Int64; RTC:Boolean):Int64;

Description: Set the current system time in 100 nanosecond ticks since 1/1/1601

Time	The time to be set
RTC	Set the default RTC (real time clock) if available
Return	The system time after setting
Note	This is the same time format as Windows FILE_TIME and is intended to allow compatibility with file system functions etc. By default the time passed to this function is considered to be UTC but the actual conversion between UTC and local time is handled at a higher level.

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function ClockGetCount:LongWord; inline;

Description: Gets the current system clock count (32 least significant bits of total)

Note	This will normally come from the free running system timer in the board and is useful as a form of tick count but not for time keeping because the actual rate at which this increments is dependent on the system timer clock frequency of the specific board and may not be a measure of time in its raw form.

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function ClockGetTotal:Int64; inline;

Description: Gets the total system clock count

Note	This will normally come from the free running system timer in the board and is useful as a form of tick count but not for time keeping because the actual rate at which this increments is dependent on the system timer clock frequency of the specific board and may not be a measure of time in its raw form.

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function Clock?pdateOffset:LongWord; inline;

Description: Change the system time offset between UTC and Local

Note	None documented

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function ClockGetRate(ClockId:LongWord):LongWord; inline;

Description: Get the clock rate in Hz of the specified Clock

Note	None documented

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function ClockSetRate(ClockId,Rate:LongWord; Turbo:Boolean):LongWord; inline;

Description: Set the clock rate in Hz of the specified Clock

Note	None documented

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function ClockGetState(ClockId:LongWord):LongWord; inline;

Description: Get the state of the specified Clock

Note	None documented

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function ClockSetState(ClockId,State:LongWord):LongWord; inline;

Description: Set the state of the specified Clock

Note	None documented

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function ClockGetMinRate(ClockId:LongWord):LongWord; inline;

Description: Get the minimum clock rate in Hz of the specified Clock

Note	None documented

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function ClockGetMaxRate(ClockId:LongWord):LongWord; inline;

Description: Get the maximum clock rate in Hz of the specified Clock

Note	None documented

Turbo functions

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function TurboGetState(TurboId:LongWord):LongWord; inline;

Description: Get the Turbo state (0 equals Off / 1 equals On) of the specified device

Note	None documented

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function TurboSetState(TurboId,State:LongWord):LongWord; inline;

Description: Set the Turbo state (0 equals Off / 1 equals On) of the specified device

Note	None documented

Voltage functions

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function VoltageGetValue(VoltageId:LongWord):LongWord; inline;

Description: Get the current voltage level of the specified device

Note	None documented

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function VoltageSetValue(VoltageId,Value:LongWord):LongWord; inline;

Description: Set the current voltage level of the specified device

Note	None documented

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function VoltageGetMinValue(VoltageId:LongWord):LongWord; inline;

Description: Get the minimum voltage level of the specified device

Note	None documented

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function VoltageGetMaxValue(VoltageId:LongWord):LongWord; inline;

Description: Get the maximum voltage level of the specified device

Note	None documented

Temperature functions

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function TemperatureGetCurrent(TemperatureId:LongWord):LongWord; inline;

Description: Get the current temperature in thousandths of a degree C of the specified device

Note	None documented

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function TemperatureGetMaximum(TemperatureId:LongWord):LongWord; inline;

Description: Get the maximum temperature in thousandths of a degree C of the specified device

Note	None documented

GPU memory functions

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function GPUMemoryAllocate(Length,Alignment,Flags:LongWord):THandle; inline;

Description: Allocate memory from the GPU

Note	None documented

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function GPUMemoryRelease(Handle:THandle):LongWord; inline;

Description: Release memory allocated from the GPU

Note	None documented

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function GPUMemoryLock(Handle:THandle):LongWord; inline;

Description: Lock memory allocated from the GPU and return an address

Note	None documented

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function GPUMemoryUnlock(Handle:THandle):LongWord; inline;

Description: Unlock memory allocated from the GPU

Note	None documented

GPU misc functions

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function GPUExecuteCode(Address:Pointer; R0,R1,R2,R3,R4,R5:LongWord):LongWord; inline;

Description: Execute a block of code on the GPU

Note	None documented

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function DispmanxHandleGet(Resource:THandle):THandle; inline;

Description: Convert a Dispmanx Resouse handle to a Memory handle (Which can be passed to Lock/Unlock above)

Note	None documented

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function EDIDBlockGet(Block:LongWord; Buffer:Pointer; Length:LongWord):LongWord; inline;

Description: Get an EDID block from HDMI

Note	None documented

Framebuffer functions

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function FramebufferAvailable:Boolean; inline;

Description: Check if a framebuffer device is currently available

Note	None documented

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function FramebufferAllocate(Alignment:LongWord; var Address,Length:LongWord):LongWord; inline;

Description: Allocate a new Framebuffer

Note	None documented

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function FramebufferRelease:LongWord; inline;

Description: Release the current Framebuffer

Note	None documented

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function FramebufferSetState(State:LongWord):LongWord; inline;

Description: Set the current Framebuffer (Display) state (0 for Off / 1 for On)

Note	None documented

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function FramebufferGetDimensions(var Width,Height,Top,Bottom,Left,Right:LongWord):LongWord; inline;

Description: Get the default Dimensions of the Framebuffer (Physical Width, Height and Overscan Top, Bottom, Left, Right in Pixels)

Note	None documented

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function FramebufferGetPhysical(var Width,Height:LongWord):LongWord; inline;

Description: Get the Physical Framebuffer Width and Height in Pixels

Note	The "physical" size is the size of the allocated buffer in memory, not the resolution of the video signal sent to the display device

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function FramebufferSetPhysical(var Width,Height:LongWord):LongWord; inline;

Description: Set the Physical Framebuffer Width and Height in Pixels

Note	None documented

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function FramebufferTestPhysical(var Width,Height:LongWord):LongWord; inline;

Description: Test the Physical Framebuffer Width and Height in Pixels

Note	None documented

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function FramebufferGetVirtual(var Width,Height:LongWord):LongWord; inline;

Description: Get the Virtual Framebuffer Width and Height in Pixels

Note	The "virtual" size is the portion of buffer that is sent to the display device, not the resolution the buffer itself. This may be smaller than the allocated buffer size in order to implement panning

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function FramebufferSetVirtual(var Width,Height:LongWord):LongWord; inline;

Description: Set the Virtual Framebuffer Width and Height in Pixels

Note	None documented

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function FramebufferTestVirtual(var Width,Height:LongWord):LongWord; inline;

Description: Test the Virtual Framebuffer Width and Height in Pixels

Note	None documented

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function FramebufferGetDepth(var Depth:LongWord):LongWord; inline;

Description: Get the Framebuffer Depth in Bits per Pixel

Note	None documented

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function FramebufferSetDepth(var Depth:LongWord):LongWord; inline;

Description: Set the Framebuffer Depth in Bits per Pixel

Note	None documented

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function FramebufferTestDepth(var Depth:LongWord):LongWord; inline;

Description: Test the Framebuffer Depth in Bits per Pixel

Note	None documented

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function FramebufferGetPixelOrder(var Order:LongWord):LongWord; inline;

Description: Get the Framebuffer Pixel Order (0 = BGR / 1 = RGB)

Note	None documented

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function FramebufferSetPixelOrder(var Order:LongWord):LongWord; inline;

Description: Set the Framebuffer Pixel Order (0 = BGR / 1 = RGB)

Note	None documented

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function FramebufferTestPixelOrder(var Order:LongWord):LongWord; inline;

Description: Test the Framebuffer Pixel Order (0 = BGR / 1 = RGB)

Note	None documented

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function FramebufferGetAlphaMode(var Mode:LongWord):LongWord; inline;

Description: Get the Framebuffer Alpha Mode

Note	None documented

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function FramebufferSetAlphaMode(var Mode:LongWord):LongWord; inline;

Description: Set the Framebuffer Alpha Mode

Note	None documented

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function FramebufferTestAlphaMode(var Mode:LongWord):LongWord; inline;

Description: Test the Framebuffer Alpha Mode

Note	None documented

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function FramebufferGetPitch:LongWord; inline;

Description: Get the Framebuffer Pitch in Bytes per Line

Note	None documented

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function FramebufferGetOffset(var X,Y:LongWord):LongWord; inline;

Description: Get the Framebuffer Virtual Offset in Pixels

Note	None documented

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function FramebufferSetOffset(var X,Y:LongWord):LongWord; inline;

Description: Set the Framebuffer Virtual Offset in Pixels

Note	None documented

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function FramebufferTestOffset(var X,Y:LongWord):LongWord; inline;

Description: Test the Framebuffer Virtual Offset in Pixels

Note	None documented

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function FramebufferGetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord; inline;

Description: Get the Framebuffer Top, Bottom, Left and Right Overscan in Pixels

Note	None documented

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function FramebufferSetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord; inline;

Description: Set the Framebuffer Top, Bottom, Left and Right Overscan in Pixels

Note	None documented

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function FramebufferTestOverscan(var Top,Bottom,Left,Right:LongWord):LongWord; inline;

Description: Test the Framebuffer Top, Bottom, Left and Right Overscan in Pixels

Note	None documented

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function FramebufferGetPalette(Buffer:Pointer; Length:LongWord):LongWord; inline;

Description: Get the Framebuffer Palette in RGBA values

Note	None documented

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function FramebufferSetPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord; inline;

Description: Set the Framebuffer Palette in RGBA values

Note	None documented

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function FramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord; inline;

Description: Test the Framebuffer Palette in RGBA values

Note	None documented

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function FramebufferTestVsync:LongWord; inline;

Description: Test the Framebuffer Vertical Sync (Where Applicable)

Note	None documented

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function FramebufferSetVsync:LongWord; inline;

Description: Set (Wait For) the Framebuffer Vertical Sync (Where Applicable)

Note	None documented

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function FramebufferSetBacklight(Brightness:LongWord):LongWord; inline;

Description: Set the Framebuffer Backlight brightness (Where Applicable)

Note	None documented

Touch functions

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function TouchGetBuffer(var Address:LongWord):LongWord; inline;

Description: Get the Touchscreen memory buffer (Where Applicable)

Note	None documented

Cursor functions

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function CursorSetDefault:LongWord; inline;

Description: Set the default Cursor Info (Where Applicable)

Note	None documented

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function CursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord; inline;

Description: Set the Cursor Info (Width and Height, Hotspot and Pixel image)

Note	None documented

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function CursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord; inline;

Description: Set the Cursor State (Enabled, X and Y)

Relative	X, Y is relative to Display (Virtual) not Framebuffer (Physical)

DMA functions

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function DMAAvailable:Boolean; inline;

Description: Check if DMA is currently available

Note	None documented

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function DMATransfer(Data:PDMAData; Direction,Peripheral:LongWord):LongWord; inline;

Description: Perform a DMA transfer using the list of DMA data blocks provided

Data	A linked list of DMA data blocks for the transfer
Direction	The direction of the DMA request (eg DMA_DIR_MEM_TO_MEM)
Peripheral	The peripheral ID for data request gating (eg DMA_DREQ_ID_NONE)

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function DMAFillMemory(Dest:Pointer; Size:LongWord; Value:Byte):LongWord; inline;

Description: Fill memory at the destination address using DMA

Dest	The address to start the memory fill
Size	The size of memory to fill in bytes
Value	The value to fill the memory with

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function DMACopyMemory(Source,Dest:Pointer; Size:LongWord):LongWord; inline;

Description: Copy memory from the source to the destination address using DMA

Source	The source address to start the memory copy
Dest	The destination address to start the memory copy
Size	The size of memory to copy in bytes

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function DMAReadPeripheral(Address,Dest:Pointer; Size,Peripheral:LongWord):LongWord; inline;

Description: Read from a periperal address to the destination address using DMA

Address	The address of the periperhal register to read from
Source	The destination address to start writing to
Size	The size of the read in bytes
Peripheral	The peripheral ID for data request gating (eg DMA_DREQ_ID_UART_RX)

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function DMAWritePeripheral(Source,Address:Pointer; Size,Peripheral:LongWord):LongWord; inline;

Description: Write to a peripheral address from the source address using DMA

Source	The source address to start reading from
Address	The address of the peripheral register to write to
Size	The size of the write in bytes
Peripheral	The peripheral ID for data request gating (eg DMA_DREQ_ID_UART_TX)

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function DMAAllocateBuffer(Size:LongWord):Pointer; inline;

Description: Allocate a buffer compatible with DMA memory reads or writes

Size	The size of the buffer to allocate

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function DMAAllocateBufferEx(var Size:LongWord):Pointer; inline;

Description: Allocate a buffer compatible with DMA memory reads or writes

Size	The size of the buffer to allocate (Updated on return to actual size)

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function DMAReleaseBuffer(Buffer:Pointer):LongWord; inline;

Description: Release a buffer allocated with DMAAllocateBuffer

Buffer	The buffer to be released

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function DMAGetChannels:LongWord; inline;

Description: Get the currently enabled DMA channel bitmap (If supported)

Note	None documented

GPIO functions

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function GPIOAvailable:Boolean; inline;

Description: Check if a GPIO device is available

Reg	The memory register to read from
Value	The value of the memory register

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function GPIORead(Reg:LongWord):LongWord; inline;

Description: Perform a direct read from a GPIO register

Reg	The memory register to read from
Value	The value of the memory register

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procedure GPIOWrite(Reg,Value:LongWord); inline;

Description: Perform a direct write to a GPIO register

Reg	The memory register to write to
Value	The value to write to the register

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function GPIOInputGet(Pin:LongWord):LongWord; inline;

Description: Get the current state of a GPIO input pin

Pin	The pin to get the state for (eg GPIO_PIN_1)
Return	The current state (eg GPIO_LEVEL_HIGH) or GPIO_LEVEL_UNKNOWN on failure

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function GPIOInputWait(Pin,Trigger,Timeout:LongWord):LongWord; inline;

Description: Wait for the state of a GPIO input pin to change

Pin	The pin to wait for the state to change (eg GPIO_PIN_1)
Trigger	The trigger event to wait for (eg GPIO_TRIGGER_HIGH)
Timeout	Number of milliseconds to wait for the change (INFINITE to wait forever)
Return	The state after the change (eg GPIO_LEVEL_HIGH) or GPIO_LEVEL_UNKNOWN on failure or timeout

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function GPIOInputEvent(Pin,Trigger,Timeout:LongWord; Callback:TGPIOCallback; Data:Pointer):LongWord; inline;

Description: Schedule a function to be called when the state of a GPIO input pin changes

Pin	The pin to schedule the state change for (eg GPIO_PIN_1)
Trigger	The trigger event which will cause the function to be called (eg GPIO_TRIGGER_HIGH)
Timeout	The number of milliseconds before the scheduled trigger expires (INFINITE to never expire)
Callback	The function to be called when the trigger occurs
Data	A pointer to be pass to the function when the trigger occurs (Optional)
Return	ERROR_SUCCESS if the trigger was scheduled successfully or another error code on failure
Note	The pin and trigger that caused the event will be passed to the callback function

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function GPIOOutput?et(Pin,Level:LongWord):LongWord; inline;

Description: Change the state of a GPIO output pin

Pin	The pin to change the state for (eg GPIO_PIN_1)
Level	The state to change the pin to (eg GPIO_LEVEL_HIGH)
Return	ERROR_SUCCESS if completed successfully or another error code on failure

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function GPIOPullGet(Pin:LongWord):LongWord; inline;

Description: Get the current pull state of a GPIO pin

Pin	The pin to get the pull state for (eg GPIO_PIN_1)
Return	The current pull state of the pin (eg GPIO_PULL_UP) or GPIO_PULL_UNKNOWN on failure

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function GPIOPullSelect(Pin,Mode:LongWord):LongWord; inline;

Description: Change the pull state of a GPIO pin

Pin	The pin to change the pull state for (eg GPIO_PIN_1)
Mode	The pull state to set for the pin (eg GPIO_PULL_UP)
Return	ERROR_SUCCESS if completed successfully or another error code on failure

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