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Port B interrupt fixes #66

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Merged
merged 3 commits into from
Jul 18, 2021
Merged

Port B interrupt fixes #66

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344654b
Fixed interrupt pins on port B not being able to be read
Donkie Jul 4, 2021
3f1755e
Fixed interrupts on port B not being cleared
Donkie Jul 4, 2021
1a1983b
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Donkie Jul 17, 2021
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9 changes: 5 additions & 4 deletions src/Adafruit_MCP23XXX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -210,7 +210,7 @@ uint8_t Adafruit_MCP23XXX::getLastInterruptPin() {

// Port A
Adafruit_BusIO_Register INTFA(i2c_dev, spi_dev, MCP23XXX_SPIREG,
getRegister(MCP23XXX_INTF));
getRegister(MCP23XXX_INTF, 0));
INTFA.read(&intf);
for (uint8_t pin = 0; pin < 8; pin++) {
if (intf & (1 << pin)) {
Expand All @@ -222,7 +222,7 @@ uint8_t Adafruit_MCP23XXX::getLastInterruptPin() {
// Port B and still not found?
if ((pinCount > 8) && (intpin == 255)) {
Adafruit_BusIO_Register INTFB(i2c_dev, spi_dev, MCP23XXX_SPIREG,
getRegister(MCP23XXX_INTF), 1);
getRegister(MCP23XXX_INTF, 1));
INTFB.read(&intf);
for (uint8_t pin = 0; pin < 8; pin++) {
if (intf & (1 << pin)) {
Expand All @@ -234,8 +234,9 @@ uint8_t Adafruit_MCP23XXX::getLastInterruptPin() {

// clear if found
if (intpin != 255) {
Adafruit_BusIO_Register INTCAP(i2c_dev, spi_dev, MCP23XXX_SPIREG,
getRegister(MCP23XXX_INTCAP));
Adafruit_BusIO_Register INTCAP(
i2c_dev, spi_dev, MCP23XXX_SPIREG,
getRegister(MCP23XXX_INTCAP, MCP_PORT(intpin)));
INTCAP.read();
}

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