MCAL and Complex Drivers

MCAL drivers for AUTOSAR projects

AUTOSAR is a standardized automotive software architecture to establish the reuse of software within the automotive area. This is the baseline for enabling a transition from an ECU specific software development to an application oriented approach.

Hitex provides MC-ISAR (Micro Controller – Infineon Software ARchitecture ) low-level drivers based on the AUTOSAR MCAL layer. With the MC-ISAR AUTOSAR drivers a system supplier can use one set of standardized basic software drivers over different applications within one configuration tool. The MC-ISAR drivers are developed in house at Infineon according to a CMM level 3 certified process.

MCAL in the AUTOSAR context
Overview MCAL Drivers and Complex Drivers within an AUTOSAR design (Source: Infineon Technologies AG)

Available MCAL driver packages:

Basic AUTOSAR package MC-ISAR:

  • MCU (Microcontroller Unit) driver: provides services for basic microcontroller initialization, power down functionality, reset and microcontroller specific functions
  • WDG (Watchdog) driver: provides services for initialization, changing the operation mode and triggering the watchdog
  • GPT (General Purpose Timer) driver: uses the hardware timer channels of the general-purpose timer unit
  • SPI handler/driver: provides services for reading from and writing to devices connected via SPI busses (e.g. EEPROM, Watchdog, I/O ASICs).
  • PORT driver: provides the service for initializing the whole PORT structure of the microcontroller. The DIO driver works on pins and ports which are configured by the PORT driver.
  • DIO driver: provides services for reading and writing to/from DIO channels (pins), DIO ports, DIO channel groups
  • ICU (Input Capture Unit) driver: for demodulation of a PWM signal, counting pulses, measuring of frequency and duty cycle, generating simple interrupts and also wakeup interrupts
  • PWM (Pulse Width Modulation) driver: generates pulses with variable pulse width. It allows the selection of the duty cycle and the signal period time.
  • ADC (Analogue Digital Converter) driver: provides services to start and stop a conversion respectively to enable and disable the trigger source for a conversion.

MC-ISAR COM package:

  • CAN driver:  provides services for CAN transmissions
  • CanTrcv CAN transceiver driver: provides services to control the transceiver hardware which detects electrical malfunctions, supports power supply control and wake up via the bus.
  • LIN driver: applies to LIN 2.0 master nodes

MC-ISAR MEM package:

  • FLASH driver: provides services for reading, writing and erasing flash memory and handling write / erase protection
  • FEE driver: provides services for the Flash EEPROM Emulation

In addition to standardized modules AUTOSAR provides the possibility of complex driver for non-standardized hardware module. To efficiently exploit the hardware MCAL Complex Drivers are an essential component for hardware abstraction.

MC-ISAR MCAL CD (MCAL Complex Driver) package:

  • UART driver: provides services for handling the UART communication
  • MEMCeck driver: handles the CRC module
  • FADC (Fast Analogue Digital Converter) driver: provides services for the Fast ADC module
  • Additional driver for non standardized modules are available
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