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Minor bug fixes on PCA9554 driver

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pmantoine 2024-09-30 13:58:40 +08:00
parent 11c5638782
commit e2e7e5b71c
1 changed files with 3 additions and 3 deletions
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6
IO_PCA9554.h
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@ -57,16 +57,16 @@ private:
} }
void _writePortModes() override { void _writePortModes() override {
// Write 0 to REG_CONF_P0 & REG_CONF_P1 for in-use pins that are outputs, 1 for others. // Write 0 to REG_CONF_P0 for in-use pins that are outputs, 1 for inputs.
// PCA9554 & TCA9555, Interrupt is always enabled for raising and falling edge // PCA9554 & TCA9555, Interrupt is always enabled for raising and falling edge
uint16_t temp = ~(_portMode & _portInUse); uint8_t temp = ~(_portMode & _portInUse);
I2CManager.write(_I2CAddress, 2, REG_CONF_P0, temp); I2CManager.write(_I2CAddress, 2, REG_CONF_P0, temp);
} }
void _readGpioPort(bool immediate) override { void _readGpioPort(bool immediate) override {
if (immediate) { if (immediate) {
uint8_t buffer[2]; uint8_t buffer[2];
I2CManager.read(_I2CAddress, buffer, 1, 1, REG_INPUT_P0); I2CManager.read(_I2CAddress, buffer, 1, 1, REG_INPUT_P0);
_portInputState = buffer[0]; _portInputState = buffer[0] | _portMode;
/* PCA9554 Int bug fix, from PCA9554 datasheet: "must change command byte to something besides 00h /* PCA9554 Int bug fix, from PCA9554 datasheet: "must change command byte to something besides 00h
* after a Read operation to the PCA9554 device or before reading from * after a Read operation to the PCA9554 device or before reading from
* another device" * another device"