mirror of
https://github.com/ByteWelder/Tactility.git
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133 lines
3.8 KiB
C++
133 lines
3.8 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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#include <driver/gpio.h>
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#include <tactility/driver.h>
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#include <tactility/drivers/esp32_gpio.h>
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#include <tactility/error_esp32.h>
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#include <tactility/log.h>
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#include <tactility/drivers/gpio.h>
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#include <tactility/drivers/gpio_controller.h>
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#include <tactility/drivers/gpio_descriptor.h>
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#define TAG "esp32_gpio"
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#define GET_CONFIG(device) ((struct Esp32GpioConfig*)device->config)
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extern "C" {
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static error_t set_level(GpioDescriptor* descriptor, bool high) {
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auto esp_error = gpio_set_level(static_cast<gpio_num_t>(descriptor->pin), high);
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return esp_err_to_error(esp_error);
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}
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static error_t get_level(GpioDescriptor* descriptor, bool* high) {
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*high = gpio_get_level(static_cast<gpio_num_t>(descriptor->pin)) != 0;
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return ERROR_NONE;
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}
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static error_t set_flags(GpioDescriptor* descriptor, gpio_flags_t flags) {
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const Esp32GpioConfig* config = GET_CONFIG(descriptor->controller);
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if (descriptor->pin >= config->gpioCount) {
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return ERROR_INVALID_ARGUMENT;
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}
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gpio_mode_t mode;
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if ((flags & GPIO_FLAG_DIRECTION_INPUT_OUTPUT) == GPIO_FLAG_DIRECTION_INPUT_OUTPUT) {
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mode = GPIO_MODE_INPUT_OUTPUT;
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} else if (flags & GPIO_FLAG_DIRECTION_INPUT) {
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mode = GPIO_MODE_INPUT;
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} else if (flags & GPIO_FLAG_DIRECTION_OUTPUT) {
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mode = GPIO_MODE_OUTPUT;
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} else {
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return ERROR_INVALID_ARGUMENT;
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}
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const gpio_config_t esp_config = {
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.pin_bit_mask = 1ULL << descriptor->pin,
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.mode = mode,
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.pull_up_en = (flags & GPIO_FLAG_PULL_UP) ? GPIO_PULLUP_ENABLE : GPIO_PULLUP_DISABLE,
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.pull_down_en = (flags & GPIO_FLAG_PULL_DOWN) ? GPIO_PULLDOWN_ENABLE : GPIO_PULLDOWN_DISABLE,
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.intr_type = GPIO_FLAG_INTERRUPT_FROM_OPTIONS(flags),
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#if SOC_GPIO_SUPPORT_PIN_HYS_FILTER
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.hys_ctrl_mode = GPIO_HYS_SOFT_DISABLE
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#endif
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};
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auto esp_error = gpio_config(&esp_config);
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return esp_err_to_error(esp_error);
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}
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static error_t get_flags(GpioDescriptor* descriptor, gpio_flags_t* flags) {
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gpio_io_config_t esp_config;
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if (gpio_get_io_config(static_cast<gpio_num_t>(descriptor->pin), &esp_config) != ESP_OK) {
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return ERROR_RESOURCE;
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}
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gpio_flags_t output = 0;
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if (esp_config.pu) {
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output |= GPIO_FLAG_PULL_UP;
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}
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if (esp_config.pd) {
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output |= GPIO_FLAG_PULL_DOWN;
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}
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if (esp_config.ie) {
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output |= GPIO_FLAG_DIRECTION_INPUT;
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}
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if (esp_config.oe) {
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output |= GPIO_FLAG_DIRECTION_OUTPUT;
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}
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if (esp_config.oe_inv) {
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output |= GPIO_FLAG_ACTIVE_LOW;
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}
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*flags = output;
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return ERROR_NONE;
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}
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static error_t get_native_pin_number(GpioDescriptor* descriptor, void* pin_number) {
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auto* esp_pin_number = reinterpret_cast<gpio_num_t*>(pin_number);
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*esp_pin_number = static_cast<gpio_num_t>(descriptor->pin);
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return ERROR_NONE;
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}
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static error_t start(Device* device) {
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ESP_LOGI(TAG, "start %s", device->name);
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auto pin_count = GET_CONFIG(device)->gpioCount;
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return gpio_controller_init_descriptors(device, pin_count, nullptr);
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}
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static error_t stop(Device* device) {
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ESP_LOGI(TAG, "stop %s", device->name);
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return gpio_controller_deinit_descriptors(device);
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}
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const static GpioControllerApi esp32_gpio_api = {
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.set_level = set_level,
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.get_level = get_level,
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.set_flags = set_flags,
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.get_flags = get_flags,
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.get_native_pin_number = get_native_pin_number
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};
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extern struct Module platform_module;
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Driver esp32_gpio_driver = {
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.name = "esp32_gpio",
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.compatible = (const char*[]) { "espressif,esp32-gpio", nullptr },
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.start_device = start,
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.stop_device = stop,
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.api = (void*)&esp32_gpio_api,
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.device_type = &GPIO_CONTROLLER_TYPE,
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.owner = &platform_module,
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.internal = nullptr
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};
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} // extern "C"
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