13 lines
546 B
C++
13 lines
546 B
C++
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#include "PortMCP23S17.h"
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/* push() writes data to registerAddr.
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*/
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void PortMCP23S17::push(const uint8_t command, const uint8_t registerAddr, const uint8_t data)
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{
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digitalWrite(SS, LOW); //enable Slave Select
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SPI.transfer(command); //write command todo also read command?
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SPI.transfer(registerAddr); //register address to write data to
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SPI.transfer(data); //write the data
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digitalWrite(SS, HIGH); //disable Slave Select
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}
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