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esphome-dev/esphome/components/uln2003/uln2003.cpp
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Otto Winter 6682c43dfa 🏗 Merge C++ into python codebase (#504)
## Description:

Move esphome-core codebase into esphome (and a bunch of other refactors). See https://github.com/esphome/feature-requests/issues/97

Yes this is a shit ton of work and no there's no way to automate it :( But it will be worth it 👍

Progress:
- Core support (file copy etc): 80%
- Base Abstractions (light, switch): ~50%
- Integrations: ~10%
- Working? Yes, (but only with ported components).

Other refactors:
- Moves all codegen related stuff into a single class: `esphome.codegen` (imported as `cg`)
- Rework coroutine syntax
- Move from `component/platform.py` to `domain/component.py` structure as with HA
- Move all defaults out of C++ and into config validation.
- Remove `make_...` helpers from Application class. Reason: Merge conflicts with every single new integration.
- Pointer Variables are stored globally instead of locally in setup(). Reason: stack size limit.

Future work:
- Rework const.py - Move all `CONF_...` into a conf class (usage `conf.UPDATE_INTERVAL` vs `CONF_UPDATE_INTERVAL`). Reason: Less convoluted import block
- Enable loading from `custom_components` folder.

**Related issue (if applicable):** https://github.com/esphome/feature-requests/issues/97

**Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** esphome/esphome-docs#<esphome-docs PR number goes here>

## Checklist:
  - [ ] The code change is tested and works locally.
  - [ ] Tests have been added to verify that the new code works (under `tests/` folder).

If user exposed functionality or configuration variables are added/changed:
  - [ ] Documentation added/updated in [esphomedocs](https://github.com/OttoWinter/esphomedocs).
2019-04-17 12:06:00 +02:00

98 lines
2.5 KiB
C++

#include "uln2003.h"
#include "esphome/core/log.h"
namespace esphome {
namespace uln2003 {
static const char *TAG = "uln2003.stepper";
void ULN2003::setup() {
this->pin_a_->setup();
this->pin_b_->setup();
this->pin_c_->setup();
this->pin_d_->setup();
this->loop();
}
void ULN2003::loop() {
bool at_target = this->has_reached_target();
if (at_target) {
this->high_freq_.stop();
if (this->sleep_when_done_) {
this->pin_a_->digital_write(false);
this->pin_b_->digital_write(false);
this->pin_c_->digital_write(false);
this->pin_d_->digital_write(false);
// do not write pos
return;
}
} else {
this->high_freq_.start();
int dir = this->should_step_();
this->current_uln_pos_ += dir;
}
this->write_step_(this->current_uln_pos_);
}
void ULN2003::dump_config() {
ESP_LOGCONFIG(TAG, "ULN2003:");
LOG_PIN(" Pin A: ", this->pin_a_);
LOG_PIN(" Pin B: ", this->pin_b_);
LOG_PIN(" Pin C: ", this->pin_c_);
LOG_PIN(" Pin D: ", this->pin_d_);
ESP_LOGCONFIG(TAG, " Sleep when done: %s", YESNO(this->sleep_when_done_));
const char *step_mode_s = "";
switch (this->step_mode_) {
case ULN2003_STEP_MODE_FULL_STEP:
step_mode_s = "FULL STEP";
break;
case ULN2003_STEP_MODE_HALF_STEP:
step_mode_s = "HALF STEP";
break;
case ULN2003_STEP_MODE_WAVE_DRIVE:
step_mode_s = "WAVE DRIVE";
break;
}
ESP_LOGCONFIG(TAG, " Step Mode: %s", step_mode_s);
}
void ULN2003::write_step_(int32_t step) {
int32_t n = this->step_mode_ == ULN2003_STEP_MODE_HALF_STEP ? 8 : 4;
auto i = static_cast<uint32_t>((step % n + n) % n);
uint8_t res = 0;
switch (this->step_mode_) {
case ULN2003_STEP_MODE_FULL_STEP: {
// AB, BC, CD, DA
res |= 1 << i;
res |= 1 << ((i + 1) % 4);
break;
}
case ULN2003_STEP_MODE_HALF_STEP: {
// A, AB, B, BC, C, CD, D, DA
if (i == 0 || i == 2 || i == 7)
res |= 1 << 0;
if (i == 1 || i == 2 || i == 3)
res |= 1 << 1;
if (i == 3 || i == 4 || i == 5)
res |= 1 << 2;
if (i == 5 || i == 6 || i == 7)
res |= 1 << 3;
break;
}
case ULN2003_STEP_MODE_WAVE_DRIVE: {
// A, B, C, D
res |= 1 << i;
break;
}
}
this->pin_a_->digital_write((res >> 0) & 1);
this->pin_b_->digital_write((res >> 1) & 1);
this->pin_c_->digital_write((res >> 2) & 1);
this->pin_d_->digital_write((res >> 3) & 1);
}
} // namespace uln2003
} // namespace esphome