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This commit is contained in:
Tristan Krause 2019-04-01 15:16:47 +02:00
parent 949591a50d
commit b6d0b4c8f5
29 changed files with 0 additions and 0 deletions
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61
firmware/mcp23s17.cpp Normal file
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#include "mcp23s17.h"
MCP23S17::MCP23S17(SPI& spi, uint8_t adr) : spi(spi), adr(adr)
{
}
void MCP23S17::setDirA(uint8_t dir) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
spi.pushByte(MCP23S17_DIRA);
spi.pushByte(dir);
spi.setAdr(SPIADR::NONE);
}
void MCP23S17::setDirB(uint8_t dir) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
spi.pushByte(MCP23S17_DIRB);
spi.pushByte(dir);
spi.setAdr(SPIADR::NONE);
}
void MCP23S17::writePortA(uint8_t port) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
spi.pushByte(MCP23S17_PORTA);
spi.pushByte(port);
spi.setAdr(SPIADR::NONE);
}
void MCP23S17::writePortB(uint8_t port) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_WRITE);
spi.pushByte(MCP23S17_PORTB);
spi.pushByte(port);
spi.setAdr(SPIADR::NONE);
}
uint8_t MCP23S17::readPortA(void) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_READ);
spi.pushByte(MCP23S17_PORTA);
uint8_t port = spi.pushByte(0);
spi.setAdr(SPIADR::NONE);
return port;
}
uint8_t MCP23S17::readPortB(void) const
{
spi.setAdr(adr);
spi.pushByte(MCP23S17_OPCODE | MCP23S17_READ);
spi.pushByte(MCP23S17_PORTB);
uint8_t port = spi.pushByte(0);
spi.setAdr(SPIADR::NONE);
return port;
}