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Merge pull request #10195 from Bob-the-Kuhn/DUE-hw-SPI-to-mode-0

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[2.0.x] DUE - change hardware SPI to mode 0change to mode 0
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Bob-the-Kuhn 2018-03-23 09:46:26 -05:00 committed by GitHub
commit 81d68b2180
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1 changed files with 6 additions and 1 deletions
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7
Marlin/src/HAL/HAL_DUE/HAL_spi_Due.cpp
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@ -825,6 +825,11 @@
#else // U8G compatible hardware SPI #else // U8G compatible hardware SPI
#define SPI_MODE_0_DUE_HW 2 // DUE CPHA control bit is inverted
#define SPI_MODE_1_DUE_HW 3
#define SPI_MODE_2_DUE_HW 0
#define SPI_MODE_3_DUE_HW 1
void spiInit(uint8_t spiRate = 6 ) { // default to slowest rate if not specified) void spiInit(uint8_t spiRate = 6 ) { // default to slowest rate if not specified)
// 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz // 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz
int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 }; int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 };
@ -848,7 +853,7 @@
SPI0->SPI_MR = SPI_MR_MSTR | SPI_MR_PCSDEC | SPI_MR_MODFDIS; SPI0->SPI_MR = SPI_MR_MSTR | SPI_MR_PCSDEC | SPI_MR_MODFDIS;
/* SPI mode 0, 8 Bit data transfer, baud rate */ /* SPI mode 0, 8 Bit data transfer, baud rate */
SPI0->SPI_CSR[0] = SPI_CSR_SCBR(spiDueDividors[spiRate]) | 1; SPI0->SPI_CSR[0] = SPI_CSR_SCBR(spiDueDividors[spiRate]) | SPI_MODE_0_DUE_HW;
} }
static uint8_t spiTransfer(uint8_t data) { static uint8_t spiTransfer(uint8_t data) {