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HERCULES_SAFETY_MCU_DEMOS: TM570LC4357

ASM DRAGO
Prodigy 20 points

Part Number: HERCULES_SAFETY_MCU_DEMOS

Hi,

While porting code for little endian system (bitfield used in) to Hercules(BIG endian), bifields are effected while porting from little to big

in my case bitfields usage is crucial. May I know how to resolve this issue?

  • 0
    TI__Mastermind 49120 points

    Hello,

    There are separate source code folders as well as executables for all the different supported parts. There is no need to manually port the demo code between parts.

    Most header files define constructs that are 32-bit-addressible. Any header file that does support bitfield access also includes appropriate control variables to select the endianness, for example in spi.h:

    typedef volatile struct spiBase
{
    uint32_t  GCR0;                 /**< 0x0000: Global Control 0 */
#if ((__little_endian__ == 1) || (__LITTLE_ENDIAN__ == 1))
    uint32_t  GCR1          :  8U;  /**< 0x0007: Global Control 1 */
    uint32_t  PD            :  1U;  /**< 0x0006: Power down bit */
    uint32_t                :  7U;
    uint32_t  LB            :  1U;  /**< 0x0005: Loop back bit */
    uint32_t                :  7U;
    uint32_t  ENA           :  1U;  /**< 0x0004: SPI Enable bit */
    uint32_t                :  7U;  
    uint32_t  INT0          : 16U;  /**< 0x000A: Interrupt Enable bits */
    uint32_t  DMAREQEN      :  1U;  /**< 0x0009: DMA Request enable */
    uint32_t                :  7U;
    uint32_t  ENAHIGHZ      :  1U;  /**< 0x0008: Enable HIGHZ outputs */
    uint32_t                :  7U;
#else
    uint32_t                :  7U;  
    uint32_t  ENA           :  1U;  /**< 0x0004: SPI Enable bit */
    uint32_t                :  7U;
    uint32_t  LB            :  1U;  /**< 0x0005: Loop back bit */
    uint32_t                :  7U;
    uint32_t  PD            :  1U;  /**< 0x0006: Power down bit */
    uint32_t  GCR1          :  8U;  /**< 0x0007: Global Control 1 */
    uint32_t                :  7U;
    uint32_t  ENAHIGHZ      :  1U;  /**< 0x0008: Enable HIGHZ outputs */
    uint32_t                :  7U;
    uint32_t  DMAREQEN      :  1U;  /**< 0x0009: DMA Request enable */
    uint32_t  INT0          : 16U;  /**< 0x000A: Interrupt Enable bits */
#endif