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Fix issue #709. Keep SPI_WR_BYTE_ORDER and SPI_RD_BYTE_ORDER when upd… #710

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merged 1 commit into from
Dec 6, 2016
Merged

Fix issue #709. Keep SPI_WR_BYTE_ORDER and SPI_RD_BYTE_ORDER when upd… #710

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6 changes: 2 additions & 4 deletions Sming/SmingCore/SPI.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -113,12 +113,11 @@ void SPIClass::endTransaction() {
*/
uint32 SPIClass::transfer32(uint32 data, uint8 bits)
{
uint32_t regvalue = 0;
uint32_t regvalue = READ_PERI_REG(SPI_USER(SPI_NO)) & (SPI_WR_BYTE_ORDER | SPI_RD_BYTE_ORDER | SPI_CK_OUT_EDGE);

while(READ_PERI_REG(SPI_CMD(SPI_NO))&SPI_USR);

regvalue |= SPI_USR_MOSI | SPI_DOUTDIN | SPI_CK_I_EDGE;
regvalue &= ~(BIT2 | SPI_USR_ADDR | SPI_USR_DUMMY | SPI_USR_MISO | SPI_USR_COMMAND); //clear bit 2 see example IoT_Demo
WRITE_PERI_REG(SPI_USER(SPI_NO), regvalue);


Expand Down Expand Up @@ -183,12 +182,11 @@ void SPIClass::transfer(uint8 *buffer, size_t numberBytes) {
// compute the number of bits to clock
num_bits = bufLenght * 8;

uint32_t regvalue = 0;
uint32_t regvalue = READ_PERI_REG(SPI_USER(SPI_NO)) & (SPI_WR_BYTE_ORDER | SPI_RD_BYTE_ORDER | SPI_CK_OUT_EDGE);

while(READ_PERI_REG(SPI_CMD(SPI_NO))&SPI_USR);

regvalue |= SPI_USR_MOSI | SPI_DOUTDIN | SPI_CK_I_EDGE;
regvalue &= ~(BIT2 | SPI_USR_ADDR | SPI_USR_DUMMY | SPI_USR_MISO | SPI_USR_COMMAND); //clear bit 2 see example IoT_Demo
WRITE_PERI_REG(SPI_USER(SPI_NO), regvalue);


Expand Down