Unit PlatformRPi
From Ultibo.org
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Description
The RPi A+/B+ have the Power LED connected to GPIO Pin 35 (Activity LED is now on GPIO Pin 47 instead of Pin 16 in model A/B).
Constants
To be documented
Type definitions
To be documented
Public variables
To be documented
Function declarations
Initialization functions
procedure RPiInit;
Description: To be documented
| Note | None documented |
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RPi platform functions
procedure RPiBoardInit;
Description: To be documented
| Note | None documented |
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procedure RPiMemoryInit;
Description: To be documented
| Note | None documented |
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procedure RPiClockInit;
Description: To be documented
| Note | None documented |
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procedure RPiPowerInit;
Description: To be documented
| Note | None documented |
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procedure RPiMailboxInit;
Description: To be documented
| Note | None documented |
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procedure RPiInterruptInit;
Description: To be documented
| Note | None documented |
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procedure RPiPeripheralInit;
Description: To be documented
| Note | None documented |
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procedure RPiFramebufferInit;
Description: To be documented
| Note | None documented |
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procedure RPiPageTableInit;
Description: Initialize the Hardware Page Tables before enabling the MMU
| Note | See page 6-36 of the ARM1176JZF-S Technical Reference Manual |
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procedure RPiPowerLEDEnable;
Description: To be documented
| Note | None documented |
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procedure RPiPowerLEDOn;
Description: To be documented
| Note | None documented |
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procedure RPiPowerLEDOff;
Description: To be documented
| Note | None documented |
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procedure RPiActivityLEDEnable;
Description: To be documented
| Note | None documented |
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procedure RPiActivityLEDOn;
Description: To be documented
| Note | None documented |
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procedure RPiActivityLEDOff;
Description: To be documented
| Note | None documented |
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function RPiMailboxReceive(Mailbox,Channel:LongWord):LongWord;
Description: Receive from specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits |
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procedure RPiMailboxSend(Mailbox,Channel,Data:LongWord);
Description: Send to specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits |
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function RPiMailboxCall(Mailbox,Channel,Data:LongWord; var Response:LongWord):LongWord;
Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits
Data pointer must be 16 byte aligned to allow for the 4 bit channel number |
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function RPiMailboxCallEx(Mailbox,Channel,Data:LongWord; var Response:LongWord; Timeout:LongWord):LongWord;
Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits
Data pointer must be 16 byte aligned to allow for the 4 bit channel number |
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function RPiMailboxPropertyCall(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord):LongWord;
Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits
Data pointer must be 16 byte aligned to allow for the 4 bit channel number |
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function RPiMailboxPropertyCallEx(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord; Timeout:LongWord):LongWord;
Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel
| Note | Data = first 28 bits, Channel = last 4 bits
Data pointer must be 16 byte aligned to allow for the 4 bit channel number |
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function RPiRequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified IRQ number
| CPUID | CPU to route IRQ to (Ignored on RPi) |
|---|---|
| Number | IRQ number to register |
| Handler | Interrupt handler function to register |
| HandlerEx | Extended Interrupt handler function to register |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified IRQ number
| CPUID | CPU to route IRQ to (Ignored on RPi) |
|---|---|
| Number | IRQ number to deregister |
| Handler | Interrupt handler function to deregister |
| HandlerEx | Extended Interrupt handler function to deregister |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiRequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified FIQ number
| CPUID | CPU to route FIQ to (Ignored on RPi) |
|---|---|
| Number | FIQ number to register |
| Handler | Interrupt handler function to register |
| HandlerEx | Extended Interrupt handler function to register |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified FIQ number
| CPUID | CPU to route FIQ to (Ignored on RPi) |
|---|---|
| Number | FIQ number to deregister |
| Handler | Interrupt handler function to deregister |
| HandlerEx | Extended Interrupt handler function to deregister |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiRegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request registration of the supplied extended handler to the specified System Call number
| CPUID | The CPU ID to register the System Call against (Ignored on RPi) |
|---|---|
| Number | The System Call number to be registered |
| Handler | The handler function to be registered |
| HandlerEx | The extended handler function to be registered |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiDeregisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request deregistration of the supplied extended handler from the specified System Call number
| CPUID | The CPU ID to deregister the System Call from (Ignored on RPi) |
|---|---|
| Number | The System Call number to be deregistered |
| Handler | The handler function to be deregistered |
| HandlerEx | The extended handler function to be deregistered |
| Note | Only one of Handler or HandlerEx can be specified |
function RPiGetInterruptEntry(Number:LongWord):TInterruptEntry;
Description: Get the interrupt entry for the specified interrupt number
| Note | None documented |
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function RPiGetSystemCallEntry(Number:LongWord):TSystemCallEntry;
Description: To be documented
| Note | Get the system call entry for the specified system call number |
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function RPiSystemRestart(Delay:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function RPiSystemShutdown(Delay:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function RPiSystemGetCommandLine:String;
Description: Get the Command Line from the Mailbox property tags channel
| Note | None documented |
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function RPiCPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord;
Description: Get the CPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUGetState:LongWord;
Description: To be documented
| Note | None documented |
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function RPiGPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord;
Description: Get the GPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiBoardGetModel:LongWord;
Description: Get the Board Model from the Mailbox property tags channel
| Note | None documented |
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function RPiBoardGetSerial:Int64;
Description: Get the Board Serial from the Mailbox property tags channel
| Note | None documented |
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function RPiBoardGetRevision:LongWord;
Description: Get the Board Revision from the Mailbox property tags channel
| Note | None documented |
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function RPiBoardGetMACAddress:String;
Description: Get the Board MAC Address from the Mailbox property tags channel
| Note | None documented |
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function RPiFirmwareGetRevision:LongWord;
Description: Get the Firmware Revision from the Mailbox property tags channel
| Note | None documented |
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function RPiPowerGetWait(PowerId:LongWord):LongWord;
Description: Get the Power Wait from the Mailbox property tags channel
| Note | None documented |
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function RPiPowerGetState(PowerId:LongWord):LongWord;
Description: Get the Power State from the Mailbox property tags channel
| Note | None documented |
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function RPiPowerSetState(PowerId,State:LongWord; Wait:Boolean):LongWord;
Description: Set the Power State in the Mailbox property tags channel
| Note | Power Lock not required due to Mailbox Property Call serialization |
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function RPiClockGetCount:LongWord;
Description: Gets the current system clock count (32 least significant bits of total)
| Note | On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz and therefore overflows every 4295 seconds |
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function RPiClockGetTotal:Int64;
Description: Gets the total system clock count
| Note | On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz, the clock interrupt also uses this timer to increment the clock every second and therefore keep time. |
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function RPiClockGetRate(ClockId:LongWord):LongWord;
Description: Get the Clock Rate from the Mailbox property tags channel
| Note | None documented |
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function RPiClockSetRate(ClockId,Rate:LongWord; Turbo:Boolean):LongWord;
Description: Set the Clock Rate in the Mailbox property tags channel
| Note | None documented |
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function RPiClockGetState(ClockId:LongWord):LongWord;
Description: Get the Clock State from the Mailbox property tags channel
| Note | None documented |
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function RPiClockSetState(ClockId,State:LongWord):LongWord;
Description: Set the Clock State in the Mailbox property tags channel
| Note | None documented |
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function RPiClockGetMinRate(ClockId:LongWord):LongWord;
Description: Get the Clock Min Rate from the Mailbox property tags channel
| Note | None documented |
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function RPiClockGetMaxRate(ClockId:LongWord):LongWord;
Description: Get the Clock Max Rate from the Mailbox property tags channel
| Note | None documented |
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function RPiTurboGetState(TurboId:LongWord):LongWord;
Description: Get the Turbo State from the Mailbox property tags channel
| Note | None documented |
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function RPiTurboSetState(TurboId,State:LongWord):LongWord;
Description: Set the Turbo State in the Mailbox property tags channel
| Note | None documented |
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function RPiVoltageGetValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Value from the Mailbox property tags channel
| Note | None documented |
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function RPiVoltageSetValue(VoltageId,Value:LongWord):LongWord;
Description: Set the Voltage Value in the Mailbox property tags channel
| Note | None documented |
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function RPiVoltageGetMinValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Min Value from the Mailbox property tags channel
| Note | None documented |
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function RPiVoltageGetMaxValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Max Value from the Mailbox property tags channel
| Note | None documented |
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function RPiTemperatureGetCurrent(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Current from the Mailbox property tags channel
| Note | None documented |
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function RPiTemperatureGetMaximum(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Maximum Model from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUMemoryAllocate(Length,Alignment,Flags:LongWord):THandle;
Description: Allocate GPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUMemoryRelease(Handle:THandle):LongWord;
Description: Release GPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUMemoryLock(Handle:THandle):LongWord;
Description: Lock GPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUMemoryUnlock(Handle:THandle):LongWord;
Description: Unlock GPU Memory from the Mailbox property tags channel
| Note | None documented |
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function RPiGPUExecuteCode(Address:Pointer; R0,R1,R2,R3,R4,R5:LongWord):LongWord;
Description: Execute GPU Code from the Mailbox property tags channel
| Note | None documented |
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function RPiDispmanxHandleGet(Resource:THandle):THandle;
Description: Get Dispmanx Memory Handle from the Mailbox property tags channel
| Note | None documented |
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function RPiEDIDBlockGet(Block:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Get EDID Block from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferAllocate(Alignment:LongWord; var Address,Length:LongWord):LongWord;
Description: Allocate Framebuffer from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferRelease:LongWord;
Description: Release Framebuffer from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetState(State:LongWord):LongWord;
Description: Set Framebuffer State (Blank Screen) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetDimensions(var Width,Height,Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Dimensions from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetPhysical(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Physical size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetPhysical(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Physical size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestPhysical(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Physical size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetVirtual(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Virtual size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetVirtual(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Virtual size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestVirtual(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Virtual size from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetDepth(var Depth:LongWord):LongWord;
Description: Get Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetDepth(var Depth:LongWord):LongWord;
Description: Set Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestDepth(var Depth:LongWord):LongWord;
Description: Test Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetPixelOrder(var Order:LongWord):LongWord;
Description: Get Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetPixelOrder(var Order:LongWord):LongWord;
Description: Set Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestPixelOrder(var Order:LongWord):LongWord;
Description: Test Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetAlphaMode(var Mode:LongWord):LongWord;
Description: Get Framebuffer Alpha Mode from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetAlphaMode(var Mode:LongWord):LongWord;
Description: Set Framebuffer Alpha Mode from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestAlphaMode(var Mode:LongWord):LongWord;
Description: Test Framebuffer Alpha Mode from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetPitch:LongWord;
Description: Get Framebuffer Pitch (Bytes per line) from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetOffset(var X,Y:LongWord):LongWord;
Description: Get Framebuffer Virtual Offset from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetOffset(var X,Y:LongWord):LongWord;
Description: Set Framebuffer Virtual Offset from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestOffset(var X,Y:LongWord):LongWord;
Description: Test Framebuffer Virtual Offset from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Overscan from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Set Framebuffer Overscan from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Test Framebuffer Overscan from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferGetPalette(Buffer:Pointer; Length:LongWord):LongWord;
Description: Get Framebuffer Palette from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Set Framebuffer Palette from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Test Framebuffer Palette from the Mailbox property tags channel
| Note | None documented |
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function RPiFramebufferSetBacklight(Brightness:LongWord):LongWord;
Description: Set Framebuffer Backlight Brightness from the Mailbox property tags channel
| Note | None documented |
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function RPiTouchGetBuffer(var Address:LongWord):LongWord;
Description: Get the Touchscreen buffer from the Mailbox property tags channel
| Note | None documented |
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function RPiCursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord;
Description: Set Curson Info (Pixels) from the Mailbox property tags channel
| Note | None documented |
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function RPiCursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord;
Description: Set Cursor State (Enable, X, Y) from the Mailbox property tags channel
| Relative | X, Y is relative to Display (Virtual) not Framebuffer (Physical) |
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function RPiDMAGetChannels:LongWord;
Description: Get the available DMA Channels from the Mailbox property tags channel
| Note | None documented |
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RPi tthread functions
procedure RPiSchedulerInit;
Description: To be documented
| Note | None documented |
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RPi IRQ functions
function RPiDispatchIRQ(CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;
Description: Process any pending IRQ requests
| Note | Called by ARMv6IRQHandler in PlatformARMv6
A DataMemoryBarrier is executed before and after calling this function |
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function RPiHandleIRQ(Number,CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;
Description: Call the handler function for an IRQ that was received, or halt if it doesn't exist
| Note | None documented |
|---|
RPi FIQ functions
function RPiDispatchFIQ(CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;
Description: Process any pending FIQ requests
| Note | Called by ARMv6FIQHandler in PlatformARMv6
A DataMemoryBarrier is executed before and after calling this function |
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function RPiHandleFIQ(Number,CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;
Description: Call the handler function for an FIQ that was received, or halt if it doesn't exist
| Note | None documented |
|---|
RPi SWI functions
function RPiDispatchSWI(CPUID:LongWord; Thread:TThreadHandle; Request:PSystemCallRequest):TThreadHandle;
Description: Process an SWI request
| Note | Called by ARMv6SoftwareInterruptHandler in PlatformARMv6
A DataMemoryBarrier is executed before and after calling this function |
|---|
RPi clock functions
procedure RPiClockInterrupt(Parameter:Pointer);
Description: Interrupt handler function for the clock interrupt
| Note | This schedules another clock interrupt to occur CLOCK_CYCLES_PER_TICK in the future, then updates ClockTicks and ClockSeconds. |
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procedure RPiClockUpdate(Cycles:LongWord; var Last:LongWord);
Description: ?etup a clock interrupt to trigger after the specified number of clock cycles
| Cycles | Number of cycles after which the timer interrupt is to be triggered |
|---|---|
| Note | This refers to native clock cycles as specified by CLOCK_FREQUENCY |
RPi scheduler functions
function RPiSchedulerInterrupt(CPUID:LongWord; Thread:TThreadHandle; Parameter:Pointer):TThreadHandle;
Description: Interrupt handler function for the scheduler interrupt
| Note | This schedules another scheduler interrupt to occur SCHEDULER_CLOCKS_PER_INTERRUPT in the future, then checks for threads to wakeup and the next thread to schedule. |
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procedure RPiSchedulerUpdate(Cycles:LongWord; var Last:LongWord);
Description: ?etup a scheduler interrupt to trigger after the specified number of clock cycles
| Cycles | Number of cycles after which the scheduler interrupt is to be triggered |
|---|---|
| Note | This refers to native clock cycles as specified by CLOCK_FREQUENCY |
procedure RPiSchedulerSystemCall(Request:PSystemCallRequest);
Description: System Call handler for the scheduler
| Note | This is registered to receive requests for the SYSTEM_CALL_CONTEXT_SWITCH and will perform a context switch from within an SWI |
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RPi framebuffer functions
function RPiFramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using the Mailbox Property Tags
| Note | None documented |
|---|
function RPiFramebufferDeviceAllocateAlt(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using a simple Mailbox Call
| Note | None documented |
|---|
function RPiFramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;
Description: To be documented
| Note | None documented |
|---|
function RPiFramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;
Description: To be documented
| Note | None documented |
|---|
function RPiFramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address,Size,Flags:LongWord):LongWord;
Description: To be documented
| Note | None documented |
|---|
function RPiFramebufferDevice?etBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;
Description: To be documented
| Note | None documented |
|---|
function RPiFramebufferDevice?etProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: To be documented
| Note | None documented |
|---|
RPi helper functions
procedure RPiWait; assembler; nostackframe;
Description: To be documented
| Note | None documented |
|---|
procedure RPiLongWait; assembler; nostackframe;
Description: To be documented
| Note | None documented |
|---|
procedure RPiShortWait; assembler; nostackframe;
Description: To be documented
| Note | None documented |
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procedure RPiSlowBlink; assembler; nostackframe;
Description: To be documented
| Note | None documented |
|---|
procedure RPiFastBlink; assembler; nostackframe;
Description: To be documented
| Note | None documented |
|---|
procedure RPiBootBlink; assembler; nostackframe;
Description: Blink the Activity LED without dependency on any other RTL ?etup
| Note | This currently only works for RPiA+/B+ |
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function RPiConvertPowerIdRequest(PowerId:LongWord):LongWord;
Description: Convert Ultibo Power Id to BCM2835 Power Id
| Note | None documented |
|---|
function RPiConvertPowerStateRequest(PowerState:LongWord):LongWord;
Description: Convert Ultibo Power State to BCM2835 Power State
| Note | None documented |
|---|
function RPiConvertPowerStateResponse(PowerState:LongWord):LongWord;
Description: Convert BCM2835 Power State to Ultibo Power State
| Note | None documented |
|---|
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