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[mcp23017] reset IPOL registers to 0x00 on setup (#17177)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
Daniele Palumbo
2026-07-14 02:38:07 +00:00
committed by GitHub
co-authored by Jesse Hills
parent db9a09d05a
commit b6b5b61640
1 changed files with 4 additions and 0 deletions
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esphome/components/mcp23017/mcp23017.cpp
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@@ -19,6 +19,10 @@ void MCP23017::setup() {
this->read_reg(mcp23x17_base::MCP23X17_OLATA, &this->olat_a_);
this->read_reg(mcp23x17_base::MCP23X17_OLATB, &this->olat_b_);
// Reset IPOL to 0x00: ESPHome handles 'inverted' in software.
this->write_reg(mcp23x17_base::MCP23X17_IPOLA, 0x00);
this->write_reg(mcp23x17_base::MCP23X17_IPOLB, 0x00);
uint8_t iocon_flags = 0;
if (this->open_drain_ints_) {
iocon_flags |= IOCON_ODR;