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[esp32][esp8266] use low-level pin control for ISR gpio (#8743)

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Co-authored-by: Samuel Sieb <samuel@sieb.net>
This commit is contained in:
Samuel Sieb
2025-05-13 13:58:15 -07:00
committed by GitHub
parent 032949bc77
commit 0aa7911b1b
2 changed files with 155 additions and 32 deletions
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77
esphome/components/esp8266/gpio.cpp
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@@ -8,7 +8,7 @@ namespace esp8266 {
static const char *const TAG = "esp8266";
static int IRAM_ATTR flags_to_mode(gpio::Flags flags, uint8_t pin) {
static int flags_to_mode(gpio::Flags flags, uint8_t pin) {
if (flags == gpio::FLAG_INPUT) { // NOLINT(bugprone-branch-clone)
return INPUT;
} else if (flags == gpio::FLAG_OUTPUT) {
@@ -34,12 +34,36 @@ static int IRAM_ATTR flags_to_mode(gpio::Flags flags, uint8_t pin) {
struct ISRPinArg {
uint8_t pin;
bool inverted;
volatile uint32_t *in_reg;
volatile uint32_t *out_set_reg;
volatile uint32_t *out_clr_reg;
volatile uint32_t *mode_set_reg;
volatile uint32_t *mode_clr_reg;
volatile uint32_t *func_reg;
uint32_t mask;
};
ISRInternalGPIOPin ESP8266GPIOPin::to_isr() const {
auto *arg = new ISRPinArg{}; // NOLINT(cppcoreguidelines-owning-memory)
arg->pin = pin_;
arg->inverted = inverted_;
arg->pin = this->pin_;
arg->inverted = this->inverted_;
if (this->pin_ < 16) {
arg->in_reg = &GPI;
arg->out_set_reg = &GPOS;
arg->out_clr_reg = &GPOC;
arg->mode_set_reg = &GPES;
arg->mode_clr_reg = &GPEC;
arg->func_reg = &GPF(this->pin_);
arg->mask = 1 << this->pin_;
} else {
arg->in_reg = &GP16I;
arg->out_set_reg = &GP16O;
arg->out_clr_reg = nullptr;
arg->mode_set_reg = &GP16E;
arg->mode_clr_reg = nullptr;
arg->func_reg = &GPF16;
arg->mask = 1;
}
return ISRInternalGPIOPin((void *) arg);
}
@@ -88,20 +112,57 @@ void ESP8266GPIOPin::detach_interrupt() const { detachInterrupt(pin_); }
using namespace esp8266;
bool IRAM_ATTR ISRInternalGPIOPin::digital_read() {
auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
return bool(digitalRead(arg->pin)) != arg->inverted; // NOLINT
auto *arg = reinterpret_cast<ISRPinArg *>(this->arg_);
return bool(*arg->in_reg & arg->mask) != arg->inverted;
}
void IRAM_ATTR ISRInternalGPIOPin::digital_write(bool value) {
auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
digitalWrite(arg->pin, value != arg->inverted ? 1 : 0); // NOLINT
if (arg->pin < 16) {
if (value != arg->inverted) {
*arg->out_set_reg = arg->mask;
} else {
*arg->out_clr_reg = arg->mask;
}
} else {
if (value != arg->inverted) {
*arg->out_set_reg |= 1;
} else {
*arg->out_set_reg &= ~1;
}
}
}
void IRAM_ATTR ISRInternalGPIOPin::clear_interrupt() {
auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, 1UL << arg->pin);
}
void IRAM_ATTR ISRInternalGPIOPin::pin_mode(gpio::Flags flags) {
auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
pinMode(arg->pin, flags_to_mode(flags, arg->pin)); // NOLINT
auto *arg = reinterpret_cast<ISRPinArg *>(this->arg_);
if (arg->pin < 16) {
if (flags & gpio::FLAG_OUTPUT) {
*arg->mode_set_reg = arg->mask;
} else {
*arg->mode_clr_reg = arg->mask;
}
if (flags & gpio::FLAG_PULLUP) {
*arg->func_reg |= 1 << GPFPU;
} else {
*arg->func_reg &= ~(1 << GPFPU);
}
} else {
if (flags & gpio::FLAG_OUTPUT) {
*arg->mode_set_reg |= 1;
} else {
*arg->mode_set_reg &= ~1;
}
if (flags & gpio::FLAG_PULLDOWN) {
*arg->func_reg |= 1 << GP16FPD;
} else {
*arg->func_reg &= ~(1 << GP16FPD);
}
}
}
} // namespace esphome