60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
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#include "spi.h"
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#include "mraa.h"
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SPI::SPI()
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{
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mspi = NULL;
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}
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void SPI::begin(int busNo, uint32_t spi_speed)
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{
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mspi = new mraa::Spi(
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busNo); // init mraa spi bus, it will handle chip select internally. For CS pin wiring user must check SPI details in hardware manual
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mspi->mode(mraa::SPI_MODE0);
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mspi->bitPerWord(8);
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mspi->frequency(
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spi_speed); // Prophet: this will try to set 8MHz, however MRAA will reset to max platform speed and syslog a message of it
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}
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void SPI::end()
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{
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// Prophet: we should check for existence of mspi before deleting it
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if (mspi != NULL) {
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delete mspi;
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}
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}
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void SPI::setBitOrder(uint8_t bit_order)
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{
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if (mspi != NULL) {
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mspi->lsbmode((mraa_boolean_t) bit_order);
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} // Prophet: bit_order
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}
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void SPI::setDataMode(uint8_t data_mode)
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{
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if (mspi != NULL) {
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mspi->mode((mraa::Spi_Mode) data_mode);
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}
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}
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void SPI::setClockDivider(uint32_t spi_speed)
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{
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if (mspi != NULL) {
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mspi->frequency(spi_speed);
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}
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}
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void SPI::chipSelect(int csn_pin)
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{
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}
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SPI::~SPI()
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{
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// Prophet: we should call end here to free used memory and unexport SPI interface
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this->end();
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}
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