62 lines
1.3 KiB
C++
62 lines
1.3 KiB
C++
#include "mcp23s17.h"
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MCP23S17::MCP23S17(SPI& spi, uint8_t adr) : spi(spi), adr(adr)
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{
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}
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void MCP23S17::setDirA(uint8_t dir) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
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spi.pushByte(MCP23S17_DIRA);
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spi.pushByte(dir);
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spi.setAdr(SPIADR::NONE);
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}
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void MCP23S17::setDirB(uint8_t dir) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
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spi.pushByte(MCP23S17_DIRB);
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spi.pushByte(dir);
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spi.setAdr(SPIADR::NONE);
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}
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void MCP23S17::writePortA(uint8_t port) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
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spi.pushByte(MCP23S17_PORTA);
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spi.pushByte(port);
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spi.setAdr(SPIADR::NONE);
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}
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void MCP23S17::writePortB(uint8_t port) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
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spi.pushByte(MCP23S17_PORTB);
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spi.pushByte(port);
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spi.setAdr(SPIADR::NONE);
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}
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uint8_t MCP23S17::readPortA(void) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_READ);
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spi.pushByte(MCP23S17_PORTA);
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uint8_t port = spi.pushByte(0);
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spi.setAdr(SPIADR::NONE);
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return port;
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}
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uint8_t MCP23S17::readPortB(void) const
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{
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spi.setAdr(adr);
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spi.pushByte(MCP23S17_OPCODE | MCP23S17_READ);
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spi.pushByte(MCP23S17_PORTB);
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uint8_t port = spi.pushByte(0);
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spi.setAdr(SPIADR::NONE);
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return port;
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}
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