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Also this API should not be called when the HW unit is busy. This API should be called after Spi_Init is called. Note: Only McSPI HW units supports this feature. This function enables or disables the internal loopback mode of SPI. If this pointer is NULL_PTR, then the API will return E_NOT_OK. RegRbPtr - Pointer to where to store the readback values. If this is invalid, then the API will return E_NOT_OK. SPI Hardware microcontroller peripheral unit ID. Uint32 Spi_RegisterReadback ( Spi_HWUnitType HWUnit, P2VAR(Spi_RegisterReadbackType, AUTOMATIC, SPI_APPL_DATA) RegRbPtr)Į_OK: Register read back has been done, E_NOT_OK: Register read back failed The service API defined below shall be implemented to enable this detectionĬan potentially be turned OFF ( NON Standard configurable parameters) One of the recommended detection methods would be to periodically read-back the configuration and confirm configuration is consistent. Hw Unit IdĪs noted from the previous MCAL implementation, some of the critical configuration registers could potentially be corrupted by other entities (s/w or h/w).
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So to use SPI_UNIT_MCSPI1, user needs to define SPI_UNIT_MCU_MCSPI0 SPI_UNIT_MCU_MCSPI1 SPI_UNIT_MCU_MCSPI2 SPI_UNIT_MCSPI0. Hw Unit Id 0 always corresponds to SPI_UNIT_MCU_MCSPI0. Please define all the SPI instances defined in SpiHwUnitType.
MULTISIM 10 MCU MODULE USER GUIDE DRIVER
This driver implementation introduces configurable constraint as mentioned below. Implementation Specific Configuration Constraint Please refer the SPI design section NON Standard configurable parameters ( NON Standard configurable parameters), which is included as part of release ( Spi Design Document) This driver implementation introduces below listed configurable options TI specific SpiCsIdleTime parameter is used instead of this. Range specified by AUTOSAR specification is not supported by SPI hardware. This parameter is the timing between clock and chip select (in seconds) This parameter allows to use a range of values from 0 up to 0.0001 seconds. This parameter is the communication baudrate which allows using a range of values, from the point of view of configuration tools, from Hz up to MHz.This is achieved using modulespecific parameter SpiExtDeviceClockDivider Variance / Deviation from the specification The following section details on the un-supported features and additional features added. The associated MCSPI configuration generated files Spi_Cfg.c, Spi_Lcfg.c and Spi_PBcfg.c to be present as show ( File Structure)
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Please refer ( Build) to specify path to generated configuration. The Spi Driver implementation supports multiple configuration variants (refer section Introduction), the driver expects generated Spi_Cfg.h to be present as ( File Structure). The following table lists the mapping between instance of MCSPI and SpiChannelId of the configurator Spi HwUnit Id The driver expects user of this module has programmed required clock source.ġ1 spi instances are supported by this driver implementation (8 instances in Main Domain & 3 in MCU Domain in case of J721E/J7200). Programming of clock source for the MCSPI, is beyond the scope of this document.
MULTISIM 10 MCU MODULE USER GUIDE SERIAL
It allows a master device to initiate serial data transfers to a slave device. The The Multi-channel Serial Peripheral Interface (MCSPI) is a master/slave synchronous serial bus. Please refer the SPI design, which is included as part of release ( Spi Design Document) DMA support has also been added to SPI module.Take care of the settings required by external components (baud rate etc.Handle data transmission to the components connected via SPI.Handle the SPI hardware units onboard – MCSPI.These components can be used by an application. The SPI driver provides services for basic communication with external components. Supported Configuration Variants : Post-build, Link-time, Pre-Compile.This document details AUTOSAR BSW SPI module implementation