Files
ETcontroller_PRO/lib/GPIO/WS_TCA9554PWR.cpp
Emanuele Trabattoni adb15962c6 I2C Digitalout driver
2025-06-22 12:23:38 +02:00

81 lines
2.0 KiB
C++

#include "WS_TCA9554PWR.h"
namespace drivers
{
TCA9554PWR::TCA9554PWR(I2C &i2c, const uint8_t address) : m_i2c(i2c), m_address(address)
{
writeRegister(TCA9554_OUTPUT_REG, Low); // set all pins to Low state
writeRegister(TCA9554_CONFIG_REG, TCA9554_OUT_MODE); // set all pins as output (relay mode for this board)
}
const bool TCA9554PWR::writeRegister(const uint8_t reg, const uint8_t val)
{
if (m_i2c.Write(m_address, reg, {val}))
return true;
log_e("Unable to write register: reg[%d], val[%d] ", reg, val);
return false;
}
const bool TCA9554PWR::readRegister(const uint8_t reg, uint8_t &val)
{
std::vector<uint8_t> data;
if (m_i2c.Read(m_address, reg, 1, data))
{
val = data.back();
return true;
}
log_e("Unable to read register: reg[%d]");
return false;
}
const bool TCA9554PWR::setOut(const uint8_t ch, const bool state)
{
uint8_t currState(0);
uint8_t newState(0);
if (ch < EXIO_PIN1 || ch > EXIO_PIN8)
{
log_e("Invalid write to output channel: [%d]", ch);
return false;
}
if (!readPort(currState))
return false;
if (state)
newState = (High << ch) | currState;
else
newState = (~(High << ch)) & currState;
return setPort(newState);
}
const bool TCA9554PWR::setPort(const uint8_t state)
{
if (writeRegister(TCA9554_OUTPUT_REG, state))
return true;
log_e("Unable to write IO port: state[%02x]", state);
return false;
}
const bool TCA9554PWR::readOut(const uint8_t ch)
{
uint8_t currState(0);
if (ch < EXIO_PIN1 || ch > EXIO_PIN8)
{
log_e("Invalid read to output channel: [%d]", ch);
return false;
}
if (!readPort(currState))
return false;
return (currState && (High >> ch));
}
const bool TCA9554PWR::readPort(uint8_t &state)
{
if (readRegister(TCA9554_INPUT_REG, state))
return true;
log_e("Unable to read IO port: state[%02x]", state);
return false;
}
}