ESPHome  2022.11.3
mcp23017.cpp
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1 #include "mcp23017.h"
2 #include "esphome/core/log.h"
3 
4 namespace esphome {
5 namespace mcp23017 {
6 
7 static const char *const TAG = "mcp23017";
8 
10  ESP_LOGCONFIG(TAG, "Setting up MCP23017...");
11  uint8_t iocon;
12  if (!this->read_reg(mcp23x17_base::MCP23X17_IOCONA, &iocon)) {
13  this->mark_failed();
14  return;
15  }
16 
17  // Read current output register state
20 
21  if (this->open_drain_ints_) {
22  // enable open-drain interrupt pins, 3.3V-safe
25  }
26 }
27 
28 void MCP23017::dump_config() { ESP_LOGCONFIG(TAG, "MCP23017:"); }
29 
30 bool MCP23017::read_reg(uint8_t reg, uint8_t *value) {
31  if (this->is_failed())
32  return false;
33 
34  return this->read_byte(reg, value);
35 }
36 bool MCP23017::write_reg(uint8_t reg, uint8_t value) {
37  if (this->is_failed())
38  return false;
39 
40  return this->write_byte(reg, value);
41 }
42 
43 } // namespace mcp23017
44 } // namespace esphome
bool read_byte(uint8_t a_register, uint8_t *data, bool stop=true)
Definition: i2c.h:96
bool write_reg(uint8_t reg, uint8_t value) override
Definition: mcp23017.cpp:36
I2CRegister reg(uint8_t a_register)
Definition: i2c.h:46
void setup() override
Definition: mcp23017.cpp:9
bool read_reg(uint8_t reg, uint8_t *value) override
Definition: mcp23017.cpp:30
bool write_byte(uint8_t a_register, uint8_t data, bool stop=true)
Definition: i2c.h:123
virtual void mark_failed()
Mark this component as failed.
Definition: component.cpp:112
Definition: a4988.cpp:4
void dump_config() override
Definition: mcp23017.cpp:28