SYSTEM
EMLIB

Detailed Description

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.

Data Structures

struct SYSTEM_CalAddrVal_TypeDef
struct SYSTEM_ChipRevision_TypeDef

Enumerations

enum SYSTEM_FpuAccess_TypeDef {
fpuAccessDenied = (0x0 << 20),
fpuAccessPrivilegedOnly = (0x5 << 20),
fpuAccessReserved = (0xA << 20),
fpuAccessFull = (0xF << 20)
}
enum SYSTEM_PartFamily_TypeDef {
systemPartFamilyMighty21 = DEVINFO_PART_FAMILY_MG | (21 << _DEVINFO_PART_FAMILYNUM_SHIFT),
systemPartFamilyFlex21 = DEVINFO_PART_FAMILY_FG | (21 << _DEVINFO_PART_FAMILYNUM_SHIFT),
systemPartFamilyBlue21 = DEVINFO_PART_FAMILY_BG | (21 << _DEVINFO_PART_FAMILYNUM_SHIFT),
systemPartFamilyUnknown = 0xFF
}

Functions

void SYSTEM_ChipRevisionGet ( SYSTEM_ChipRevision_TypeDef *rev)
Get a chip major/minor revision.
__STATIC_INLINE void SYSTEM_FpuAccessModeSet ( SYSTEM_FpuAccess_TypeDef accessMode)
Set floating point co-processor (FPU) access mode.
__STATIC_INLINE uint8_t SYSTEM_GetCalibrationTemperature (void)
Get calibration temperature (in degrees Celsius).
bool SYSTEM_GetCalibrationValue (volatile uint32_t *regAddress)
Get a factory calibration value for a given peripheral register.
__STATIC_INLINE uint8_t SYSTEM_GetDevinfoRev (void)
Get DEVINFO revision.
__STATIC_INLINE SYSTEM_PartFamily_TypeDef SYSTEM_GetFamily (void)
Get family identifier of MCU.
__STATIC_INLINE uint32_t SYSTEM_GetFlashPageSize (void)
Get the flash page size in bytes.
__STATIC_INLINE uint16_t SYSTEM_GetFlashSize (void)
Get the flash size (in KB).
__STATIC_INLINE uint16_t SYSTEM_GetPartNumber (void)
Get part number of MCU.
__STATIC_INLINE uint8_t SYSTEM_GetProdRev (void)
Get production revision for this part.
__STATIC_INLINE uint16_t SYSTEM_GetSRAMSize (void)
Get SRAM size (in KB).
__STATIC_INLINE uint64_t SYSTEM_GetUnique (void)
Get unique number for this device.

Enumeration Type Documentation

enum 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 283 of file em_system.h .

enum SYSTEM_PartFamily_TypeDef

Family identifiers.

Enumerator
systemPartFamilyMighty21

EFR32 Mighty Gecko Series 2 Config 1 Value Device Family

systemPartFamilyFlex21

EFR32 Flex Gecko Series 2 Config 1 Value Device Family

systemPartFamilyBlue21

EFR32 Blue Gecko Series 2 Config 1 Value Device Family

systemPartFamilyUnknown

Unknown Device Family. Family ID is missing on unprogrammed parts.

Definition at line 62 of file em_system.h .

Function Documentation

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 56 of file em_system.c .

References SYSTEM_ChipRevision_TypeDef::family , SYSTEM_ChipRevision_TypeDef::major , and SYSTEM_ChipRevision_TypeDef::minor .

Referenced by CHIP_Init() .

__STATIC_INLINE 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 334 of file em_system.h .

__STATIC_INLINE uint8_t SYSTEM_GetCalibrationTemperature ( void )

Get calibration temperature (in degrees Celsius).

Returns
Calibration temperature in Celsius.

Definition at line 538 of file em_system.h .

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 106 of file em_system.c .

References SYSTEM_CalAddrVal_TypeDef::address , and SYSTEM_CalAddrVal_TypeDef::calValue .

__STATIC_INLINE uint8_t SYSTEM_GetDevinfoRev ( void )

Get DEVINFO revision.

Returns
Revision of the DEVINFO contents.

Definition at line 313 of file em_system.h .

__STATIC_INLINE SYSTEM_PartFamily_TypeDef SYSTEM_GetFamily ( void )

Get family identifier of MCU.

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 516 of file em_system.h .

__STATIC_INLINE uint32_t SYSTEM_GetFlashPageSize ( void )

Get the flash page size in bytes.

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 450 of file em_system.h .

References SYSTEM_GetProdRev() .

__STATIC_INLINE uint16_t SYSTEM_GetFlashSize ( void )

Get the flash size (in KB).

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 425 of file em_system.h .

References SYSTEM_GetProdRev() .

__STATIC_INLINE uint16_t SYSTEM_GetPartNumber ( void )

Get part number of MCU.

Returns
The part number of MCU.

Definition at line 489 of file em_system.h .

__STATIC_INLINE uint8_t SYSTEM_GetProdRev ( void )

Get production revision for this part.

Returns
Production revision for this part.

Definition at line 367 of file em_system.h .

Referenced by CHIP_Init() , SYSTEM_GetFlashPageSize() , SYSTEM_GetFlashSize() , and SYSTEM_GetSRAMSize() .

__STATIC_INLINE uint16_t SYSTEM_GetSRAMSize ( void )

Get SRAM size (in KB).

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 392 of file em_system.h .

References SYSTEM_GetProdRev() .

__STATIC_INLINE uint64_t SYSTEM_GetUnique ( void )

Get unique number for this device.

Returns
Unique number for this device.

Definition at line 347 of file em_system.h .