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mcp23017: read output latch registers during setup (#3744)

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andyboeh 2022-08-31 00:07:40 +02:00 committed by GitHub
parent 84bac8356a
commit b2199d5464
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5 changed files with 18 additions and 0 deletions
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3
esphome/components/mcp23008/mcp23008.cpp
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@ -14,6 +14,9 @@ void MCP23008::setup() {
return; return;
} }
// Read current output register state
this->read_reg(mcp23x08_base::MCP23X08_OLAT, &this->olat_);
if (this->open_drain_ints_) { if (this->open_drain_ints_) {
// enable open-drain interrupt pins, 3.3V-safe // enable open-drain interrupt pins, 3.3V-safe
this->write_reg(mcp23x08_base::MCP23X08_IOCON, 0x04); this->write_reg(mcp23x08_base::MCP23X08_IOCON, 0x04);

4
esphome/components/mcp23016/mcp23016.cpp
View file

@ -15,6 +15,10 @@ void MCP23016::setup() {
return; return;
} }
// Read current output register state
this->read_reg_(MCP23016_OLAT0, &this->olat_0_);
this->read_reg_(MCP23016_OLAT1, &this->olat_1_);
// all pins input // all pins input
this->write_reg_(MCP23016_IODIR0, 0xFF); this->write_reg_(MCP23016_IODIR0, 0xFF);
this->write_reg_(MCP23016_IODIR1, 0xFF); this->write_reg_(MCP23016_IODIR1, 0xFF);

4
esphome/components/mcp23017/mcp23017.cpp
View file

@ -14,6 +14,10 @@ void MCP23017::setup() {
return; 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_) { if (this->open_drain_ints_) {
// enable open-drain interrupt pins, 3.3V-safe // enable open-drain interrupt pins, 3.3V-safe
this->write_reg(mcp23x17_base::MCP23X17_IOCONA, 0x04); this->write_reg(mcp23x17_base::MCP23X17_IOCONA, 0x04);

3
esphome/components/mcp23s08/mcp23s08.cpp
View file

@ -23,6 +23,9 @@ void MCP23S08::setup() {
this->transfer_byte(0b00011000); // Enable HAEN pins for addressing this->transfer_byte(0b00011000); // Enable HAEN pins for addressing
this->disable(); this->disable();
// Read current output register state
this->read_reg(mcp23x08_base::MCP23X08_OLAT, &this->olat_);
if (this->open_drain_ints_) { if (this->open_drain_ints_) {
// enable open-drain interrupt pins, 3.3V-safe // enable open-drain interrupt pins, 3.3V-safe
this->write_reg(mcp23x08_base::MCP23X08_IOCON, 0x04); this->write_reg(mcp23x08_base::MCP23X08_IOCON, 0x04);

4
esphome/components/mcp23s17/mcp23s17.cpp
View file

@ -23,6 +23,10 @@ void MCP23S17::setup() {
this->transfer_byte(0b00011000); // Enable HAEN pins for addressing this->transfer_byte(0b00011000); // Enable HAEN pins for addressing
this->disable(); this->disable();
// 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_) { if (this->open_drain_ints_) {
// enable open-drain interrupt pins, 3.3V-safe // enable open-drain interrupt pins, 3.3V-safe
this->write_reg(mcp23x17_base::MCP23X17_IOCONA, 0x04); this->write_reg(mcp23x17_base::MCP23X17_IOCONA, 0x04);