SYSTEM - System Utils#

System API.

This module contains functions to read information such as RAM and Flash size, device unique ID, chip revision, family, and part number from DEVINFO and SCB blocks. Functions to configure and read status from FPU are available for compatible devices.

Modules#

SYSTEM_ChipRevision_TypeDef

SYSTEM_CalAddrVal_TypeDef

Enumerations#

enum

SYSTEM_PartFamily_TypeDef {

systemPartFamilyEfm32Gecko = _DEVINFO_PART_DEVICE_FAMILY_EFM32G

systemPartFamilyEfm32Giant = _DEVINFO_PART_DEVICE_FAMILY_EFM32GG

systemPartFamilyEfm32Tiny = _DEVINFO_PART_DEVICE_FAMILY_EFM32TG

systemPartFamilyEfm32Leopard = _DEVINFO_PART_DEVICE_FAMILY_EFM32LG

systemPartFamilyEfm32Wonder = _DEVINFO_PART_DEVICE_FAMILY_EFM32WG

systemPartFamilyEfm32Zero = _DEVINFO_PART_DEVICE_FAMILY_EFM32ZG

systemPartFamilyEfm32Happy = _DEVINFO_PART_DEVICE_FAMILY_EFM32HG

systemPartFamilyEzr32Wonder = _DEVINFO_PART_DEVICE_FAMILY_EZR32WG

systemPartFamilyEzr32Leopard = _DEVINFO_PART_DEVICE_FAMILY_EZR32LG

systemPartFamilyEzr32Happy = _DEVINFO_PART_DEVICE_FAMILY_EZR32HG

systemPartFamilyGecko = _DEVINFO_PART_DEVICE_FAMILY_G

systemPartFamilyGiant = _DEVINFO_PART_DEVICE_FAMILY_GG

systemPartFamilyTiny = _DEVINFO_PART_DEVICE_FAMILY_TG

systemPartFamilyLeopard = _DEVINFO_PART_DEVICE_FAMILY_LG

systemPartFamilyWonder = _DEVINFO_PART_DEVICE_FAMILY_WG

systemPartFamilyZero = _DEVINFO_PART_DEVICE_FAMILY_ZG

systemPartFamilyHappy = _DEVINFO_PART_DEVICE_FAMILY_HG

systemPartFamilyUnknown = 0xFF

}

Family identifiers.

enum

SYSTEM_FpuAccess_TypeDef {

fpuAccessDenied = (0x0 << 20)

fpuAccessPrivilegedOnly = (0x5 << 20)

fpuAccessReserved = (0xA << 20)

fpuAccessFull = (0xF << 20)

}

Floating point co-processor access modes.

enum

SYSTEM_SecurityCapability_TypeDef {

securityCapabilityUnknown

securityCapabilityNA

securityCapabilityBasic

securityCapabilityRoT

securityCapabilitySE

securityCapabilityVault

}

Family security capability.

Functions#

void

SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)

Get a chip major/minor revision.

SYSTEM_PartFamily_TypeDef

SYSTEM_GetFamily(void)

Get the MCU family identifier.

void

SYSTEM_FpuAccessModeSet(SYSTEM_FpuAccess_TypeDef accessMode)

Set floating point co-processor (FPU) access mode.

bool

SYSTEM_GetCalibrationValue(volatile uint32_t *regAddress)

Get a factory calibration value for a given peripheral register.

SYSTEM_SecurityCapability_TypeDef

SYSTEM_GetSecurityCapability(void)

Get family security capability.

uint64_t

SYSTEM_GetUnique(void)

Get the unique number for this device.

uint8_t

SYSTEM_GetProdRev(void)

Get the production revision for this part.

uint32_t

SYSTEM_GetSRAMBaseAddress(void)

Get the SRAM Base Address.

uint16_t

SYSTEM_GetSRAMSize(void)

Get the SRAM size (in KB).

uint16_t

SYSTEM_GetFlashSize(void)

Get the flash size (in KB).

uint32_t

SYSTEM_GetFlashPageSize(void)

Get the flash page size in bytes.

uint16_t

SYSTEM_GetPartNumber(void)

Get the MCU part number.

uint8_t

SYSTEM_GetCalibrationTemperature(void)

Get the calibration temperature (in degrees Celsius).

Enumeration Documentation#

SYSTEM_PartFamily_TypeDef#

SYSTEM_PartFamily_TypeDef

Family identifiers.

Enumerator
systemPartFamilyEfm32Gecko	EFM32 Gecko Device Family.
systemPartFamilyEfm32Giant	EFM32 Giant Gecko Series 0 Device Family.
systemPartFamilyEfm32Tiny	EFM32 Tiny Gecko Device Family.
systemPartFamilyEfm32Leopard	EFM32 Leopard Gecko Device Family.
systemPartFamilyEfm32Wonder	EFM32 Wonder Gecko Device Family.
systemPartFamilyEfm32Zero	EFM32 Zero Gecko Device Family.
systemPartFamilyEfm32Happy	EFM32 Happy Gecko Device Family.
systemPartFamilyEzr32Wonder	EZR32 Wonder Device Family.
systemPartFamilyEzr32Leopard	EZR32 Leopard Device Family.
systemPartFamilyEzr32Happy	EZR32 Happy Device Family.
systemPartFamilyGecko	Gecko Device Family.
systemPartFamilyGiant	Giant Gecko Device Family.
systemPartFamilyTiny	Tiny Gecko Device Family.
systemPartFamilyLeopard	Leopard Gecko Device Family.
systemPartFamilyWonder	Wonder Gecko Device Family.
systemPartFamilyZero	Zero Gecko Device Family.
systemPartFamilyHappy	Happy Gecko Device Family.
systemPartFamilyUnknown	Unknown Device Family.

Definition at line 57 of file platform/emlib/inc/em_system.h

SYSTEM_FpuAccess_TypeDef#

SYSTEM_FpuAccess_TypeDef

Floating point co-processor access modes.

Enumerator
fpuAccessDenied	Access denied, any attempted access generates a NOCP UsageFault.
fpuAccessPrivilegedOnly	Privileged access only, an unprivileged access generates a NOCP UsageFault.
fpuAccessReserved	Reserved.
fpuAccessFull	Full access.

Definition at line 301 of file platform/emlib/inc/em_system.h

SYSTEM_SecurityCapability_TypeDef#

SYSTEM_SecurityCapability_TypeDef

Family security capability.

Enumerator
securityCapabilityUnknown	Unknown security capability.
securityCapabilityNA	Security capability not applicable.
securityCapabilityBasic	Basic security capability.
securityCapabilityRoT	Root of Trust security capability.
securityCapabilitySE	Secure Element security capability.
securityCapabilityVault	Secure Vault security capability.

Definition at line 50 of file platform/emlib/inc/em_system_generic.h

Function Documentation#

SYSTEM_ChipRevisionGet#

void SYSTEM_ChipRevisionGet (SYSTEM_ChipRevision_TypeDef *rev)

Get a chip major/minor revision.

Parameters

[out]

rev

A location to place the chip revision information.

Definition at line 69 of file platform/emlib/src/em_system.c

SYSTEM_GetFamily#

SYSTEM_PartFamily_TypeDef SYSTEM_GetFamily (void)

Get the MCU family identifier.

Parameters

N/A

Note

This function retrieves family ID by reading the chip's device info structure in flash memory. Users can retrieve family ID directly by reading DEVINFO->PART item and decode with mask and shift #defines defined in <part_family>_devinfo.h (refer to code below for details).

Returns

Family identifier of MCU.

Definition at line 421 of file platform/emlib/src/em_system.c

SYSTEM_FpuAccessModeSet#

void SYSTEM_FpuAccessModeSet (SYSTEM_FpuAccess_TypeDef accessMode)

Set floating point co-processor (FPU) access mode.

Parameters

[in]

accessMode

Floating point co-processor access mode. See SYSTEM_FpuAccess_TypeDef for details.

Definition at line 345 of file platform/emlib/inc/em_system.h

SYSTEM_GetCalibrationValue#

bool SYSTEM_GetCalibrationValue (volatile uint32_t *regAddress)

Get a factory calibration value for a given peripheral register.

Parameters

[in]

regAddress

The peripheral calibration register address to get a calibration value for. If the calibration value is found, this register is updated with the calibration value.

Returns

True if a calibration value exists, false otherwise.

Definition at line 123 of file platform/emlib/src/em_system.c

SYSTEM_GetSecurityCapability#

SYSTEM_SecurityCapability_TypeDef SYSTEM_GetSecurityCapability (void)

Get family security capability.

Parameters

N/A

Note

This function retrieves the family security capability based on the device number. The device number is one letter and 3 digits: DEVICENUMBER = (alpha-'A')*1000 + numeric. i.e. 0d = "A000"; 1123d = "B123". The security capabilities are represented by SYSTEM_SecurityCapability_TypeDef.

Returns

Security capability of MCU.

Definition at line 165 of file platform/emlib/src/em_system.c

SYSTEM_GetUnique#

uint64_t SYSTEM_GetUnique (void)

Get the unique number for this device.

Parameters

N/A

Returns

Unique number for this device.

Definition at line 216 of file platform/emlib/src/em_system.c

SYSTEM_GetProdRev#

uint8_t SYSTEM_GetProdRev (void)

Get the production revision for this part.

Parameters

N/A

Returns

Production revision for this part.

Definition at line 236 of file platform/emlib/src/em_system.c

SYSTEM_GetSRAMBaseAddress#

uint32_t SYSTEM_GetSRAMBaseAddress (void)

Get the SRAM Base Address.

Parameters

N/A

Note

This function is used to retrieve the base address of the SRAM.

Returns

Base address SRAM (32-bit unsigned integer).

Definition at line 259 of file platform/emlib/src/em_system.c

SYSTEM_GetSRAMSize#

uint16_t SYSTEM_GetSRAMSize (void)

Get the SRAM size (in KB).

Parameters

N/A

Note

This function retrieves SRAM size by reading the chip device info structure. If your binary is made for one specific device only, use SRAM_SIZE instead.

Returns

Size of internal SRAM (in KB).

Definition at line 276 of file platform/emlib/src/em_system.c

SYSTEM_GetFlashSize#

uint16_t SYSTEM_GetFlashSize (void)

Get the flash size (in KB).

Parameters

N/A

Note

This function retrieves flash size by reading the chip device info structure. If your binary is made for one specific device only, use FLASH_SIZE instead.

Returns

Size of internal flash (in KB).

Definition at line 310 of file platform/emlib/src/em_system.c

SYSTEM_GetFlashPageSize#

uint32_t SYSTEM_GetFlashPageSize (void)

Get the flash page size in bytes.

Parameters

N/A

Note

This function retrieves flash page size by reading the chip device info structure. If your binary is made for one specific device only, use FLASH_PAGE_SIZE instead.

Returns

Page size of internal flash in bytes.

Definition at line 335 of file platform/emlib/src/em_system.c

SYSTEM_GetPartNumber#

uint16_t SYSTEM_GetPartNumber (void)

Get the MCU part number.

Parameters

N/A

Returns

The part number of MCU.

Definition at line 374 of file platform/emlib/src/em_system.c

SYSTEM_GetCalibrationTemperature#

uint8_t SYSTEM_GetCalibrationTemperature (void)

Get the calibration temperature (in degrees Celsius).

Parameters

N/A

Returns

Calibration temperature in Celsius.

Definition at line 394 of file platform/emlib/src/em_system.c