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_CalAddrVal_TypeDef

SYSTEM_ChipRevision_TypeDef

Enumerations#

enum

SYSTEM_SecurityCapability_TypeDef {

securityCapabilityUnknown

securityCapabilityNA

securityCapabilityBasic

securityCapabilityRoT

securityCapabilitySE

securityCapabilityVault

}

Family security capability.

enum

SYSTEM_PartFamily_TypeDef {

systemPartFamilyMighty22 = DEVINFO_PART_FAMILY_MG | (22 << _DEVINFO_PART_FAMILYNUM_SHIFT)

systemPartFamilyFlex22 = DEVINFO_PART_FAMILY_FG | (22 << _DEVINFO_PART_FAMILYNUM_SHIFT)

systemPartFamilyBlue22 = DEVINFO_PART_FAMILY_BG | (22 << _DEVINFO_PART_FAMILYNUM_SHIFT)

systemPartFamilyEfm32Pearl22 = DEVINFO_PART_FAMILY_PG | (22 << _DEVINFO_PART_FAMILYNUM_SHIFT)

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.

Functions#

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).

void

SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)

Get a chip major/minor revision.

SYSTEM_PartFamily_TypeDef

SYSTEM_GetFamily(void)

Get the MCU family identifier.

uint8_t

SYSTEM_GetDevinfoRev(void)

Get DEVINFO revision.

void

SYSTEM_FpuAccessModeSet(SYSTEM_FpuAccess_TypeDef accessMode)

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

Enumeration Documentation#

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

SYSTEM_PartFamily_TypeDef#

SYSTEM_PartFamily_TypeDef

Family identifiers.

Enumerator
systemPartFamilyMighty22	EFR32 Mighty Gecko Series 2 Config 2 Value Device Family.
systemPartFamilyFlex22	EFR32 Flex Gecko Series 2 Config 2 Value Device Family.
systemPartFamilyBlue22	EFR32 Blue Gecko Series 2 Config 2 Value Device Family.
systemPartFamilyEfm32Pearl22	EFM32 Pearl Gecko Series 2 Config 2 Value 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 306 of file platform/emlib/inc/em_system.h

Function Documentation#

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

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_GetDevinfoRev#

uint8_t SYSTEM_GetDevinfoRev (void )

Get DEVINFO revision.

Parameters

N/A

Returns

Revision of the DEVINFO contents.

Definition at line 329 of file platform/emlib/inc/em_system.h

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 350 of file platform/emlib/inc/em_system.h