I have DAVE-4.3 with the Update Site Pack 2017-08-07.I tried to set the MSB first setting in the DAVE App, but when I checked the signal with an oscil...
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I have DAVE-4.3 with the Update Site Pack 2017-08-07.
I tried to set the MSB first setting in the DAVE App, but when I checked the signal with an oscilloscope the bits still came in LSB. The generated code shows this addition to UART_0_init() in uart_conf.c:
/* MSB first */
XMC_USIC_CH_SetShiftDirection(XMC_UART0_CH1, XMC_USIC_CH_SHIFT_DIRECTION_MSB_FIRST);
This function is in xmc_usic.h and seems correct:
__STATIC_INLINE void XMC_USIC_CH_SetShiftDirection(XMC_USIC_CH_t *const channel, const XMC_USIC_CH_SHIFT_DIRECTION_t shift_direction)
{
channel->SCTR = (uint32_t)(channel->SCTR & (~USIC_CH_SCTR_SDIR_Msk)) | (uint32_t)shift_direction;
}
But the XMC_USIC_CH_SHIFT_DIRECTION_MSB_FIRST setting is defined as:
XMC_USIC_CH_SHIFT_DIRECTION_MSB_FIRST = 0x1UL << USIC_CH_SCTR_SDIR_Msk /**< Shift MSB first. The first data bit of a data word is located at the bit position given by the configured word length. */
when it should be defined as:
XMC_USIC_CH_SHIFT_DIRECTION_MSB_FIRST = 0x1UL << USIC_CH_SCTR_SDIR_Pos /**< Shift MSB first. The first data bit of a data word is located at the bit position given by the configured word length. */
This is in the xmc_usic.h file. I'm a little wary of correcting the code in that file because I don't want to mess anything up (and it hurts the portability of the code when the standard include files are changed), and the Dave code gets regenerated automatically.
Any recommendations on the best way to set that bit without messing around with the include files?
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