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Fix DUE Trinamic SW/HW SPI sanity check (#10336)

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This commit is contained in:
Bob-the-Kuhn
2018-04-06 22:22:30 -05:00
committed by Scott Lahteine
parent ab715c70d1
commit acda4ecb20
1 changed files with 20 additions and 5 deletions
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25
Marlin/src/HAL/HAL_DUE/SanityCheck_Due.h
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@@ -25,13 +25,28 @@
*/
/**
* Require gcc 4.7 or newer (first included with Arduino 1.6.8) for C++11 features.
* HARDWARE VS. SOFTWARE SPI COMPATIBILITY
*
* DUE selects hardware vs. software SPI depending on whether one of the hardware-controllable SDSS pins is in use.
*
* The hardware SPI controller doesn't allow software SPIs to control any shared pins.
*
* When DUE software SPI is used then Trinamic drivers must use the TMC softSPI.
*
* When DUE hardware SPI is used then a Trinamic driver can use either its hardware SPI or, if there are no shared
* pins, its software SPI.
*
* Usually the hardware SPI pins are only available to the LCD. This makes the DUE hard SPI used at the same time
* as the TMC2130 soft SPI the most common setup.
*/
#define _IS_HW_SPI(P) (defined(P) && (P == MOSI_PIN || P == MISO_PIN || P == SCK_PIN))
#if ENABLED(SDSUPPORT) && ENABLED(HAVE_TMC2130)
#if ENABLED(DUE_SOFTWARE_SPI) && !ENABLED(TMC_USE_SW_SPI)
#error "DUE software SPI is incompatible with TMC2130 hardware SPI. Enable TMC_USE_SW_SPI to fix."
#elif !ENABLED(DUE_SOFTWARE_SPI) && ENABLED(TMC_USE_SW_SPI)
#error "DUE hardware SPI is incompatible with TMC2130 software SPI. Disable TMC_USE_SW_SPI to fix."
#if ENABLED(TMC_USE_SW_SPI)
#if DISABLED(DUE_SOFTWARE_SPI) && (_IS_HW_SPI(TMC_SW_MOSI) || _IS_HW_SPI(TMC_SW_MISO) || _IS_HW_SPI(TMC_SW_SCK))
#error "DUE hardware SPI is required but is incompatible with TMC2130 software SPI. Either disable TMC_USE_SW_SPI or use separate pins for the two SPIs."
#endif
#elif ENABLED(DUE_SOFTWARE_SPI)
#error "DUE software SPI is required but is incompatible with TMC2130 hardware SPI. Enable TMC_USE_SW_SPI to fix."
#endif
#endif