mirror of
https://github.com/esphome/esphome.git
synced 2025-02-15 01:18:16 +00:00
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
#include "mcp23017.h"
|
|
#include "esphome/core/log.h"
|
|
|
|
namespace esphome {
|
|
namespace mcp23017 {
|
|
|
|
static const char *const TAG = "mcp23017";
|
|
|
|
void MCP23017::setup() {
|
|
ESP_LOGCONFIG(TAG, "Setting up MCP23017...");
|
|
uint8_t iocon;
|
|
if (!this->read_reg(mcp23x17_base::MCP23X17_IOCONA, &iocon)) {
|
|
this->mark_failed();
|
|
return;
|
|
}
|
|
|
|
// Read current output register state
|
|
this->read_reg(mcp23x17_base::MCP23X17_OLATA, &this->olat_a_);
|
|
this->read_reg(mcp23x17_base::MCP23X17_OLATB, &this->olat_b_);
|
|
|
|
if (this->open_drain_ints_) {
|
|
// enable open-drain interrupt pins, 3.3V-safe
|
|
this->write_reg(mcp23x17_base::MCP23X17_IOCONA, 0x04);
|
|
this->write_reg(mcp23x17_base::MCP23X17_IOCONB, 0x04);
|
|
}
|
|
}
|
|
|
|
void MCP23017::dump_config() { ESP_LOGCONFIG(TAG, "MCP23017:"); }
|
|
|
|
bool MCP23017::read_reg(uint8_t reg, uint8_t *value) {
|
|
if (this->is_failed())
|
|
return false;
|
|
|
|
return this->read_byte(reg, value);
|
|
}
|
|
bool MCP23017::write_reg(uint8_t reg, uint8_t value) {
|
|
if (this->is_failed())
|
|
return false;
|
|
|
|
return this->write_byte(reg, value);
|
|
}
|
|
|
|
} // namespace mcp23017
|
|
} // namespace esphome
|