90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* Copyright (c) 2019 Manivannan Sadhasivam
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* Copyright (c) 2020 Andreas Sandberg
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/kernel.h>
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#include "sx126x_common.h"
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(sx126x, CONFIG_LORA_LOG_LEVEL);
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static const struct gpio_dt_spec sx126x_gpio_reset = GPIO_DT_SPEC_INST_GET(
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0, reset_gpios);
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static const struct gpio_dt_spec sx126x_gpio_busy = GPIO_DT_SPEC_INST_GET(
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0, busy_gpios);
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static const struct gpio_dt_spec sx126x_gpio_dio1 = GPIO_DT_SPEC_INST_GET(
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0, dio1_gpios);
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void sx126x_reset(struct sx126x_data *dev_data)
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{
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gpio_pin_set_dt(&sx126x_gpio_reset, 1);
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k_sleep(K_MSEC(20));
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gpio_pin_set_dt(&sx126x_gpio_reset, 0);
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k_sleep(K_MSEC(10));
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}
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bool sx126x_is_busy(struct sx126x_data *dev_data)
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{
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return gpio_pin_get_dt(&sx126x_gpio_busy);
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}
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uint32_t sx126x_get_dio1_pin_state(struct sx126x_data *dev_data)
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{
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return gpio_pin_get_dt(&sx126x_gpio_dio1) > 0 ? 1U : 0U;
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}
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void sx126x_dio1_irq_enable(struct sx126x_data *dev_data)
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{
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gpio_pin_interrupt_configure_dt(&sx126x_gpio_dio1,
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GPIO_INT_EDGE_TO_ACTIVE);
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}
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void sx126x_dio1_irq_disable(struct sx126x_data *dev_data)
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{
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gpio_pin_interrupt_configure_dt(&sx126x_gpio_dio1,
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GPIO_INT_DISABLE);
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}
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static void sx126x_dio1_irq_callback(const struct device *dev,
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struct gpio_callback *cb, uint32_t pins)
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{
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struct sx126x_data *dev_data = CONTAINER_OF(cb, struct sx126x_data,
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dio1_irq_callback);
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if (pins & BIT(sx126x_gpio_dio1.pin)) {
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k_work_submit(&dev_data->dio1_irq_work);
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}
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}
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void sx126x_set_tx_params(int8_t power, RadioRampTimes_t ramp_time)
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{
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SX126xSetTxParams(power, ramp_time);
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}
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int sx126x_variant_init(const struct device *dev)
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{
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struct sx126x_data *dev_data = dev->data;
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if (gpio_pin_configure_dt(&sx126x_gpio_reset, GPIO_OUTPUT_ACTIVE) ||
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gpio_pin_configure_dt(&sx126x_gpio_busy, GPIO_INPUT) ||
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gpio_pin_configure_dt(&sx126x_gpio_dio1, GPIO_INPUT)) {
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LOG_ERR("GPIO configuration failed.");
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return -EIO;
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}
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gpio_init_callback(&dev_data->dio1_irq_callback,
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sx126x_dio1_irq_callback, BIT(sx126x_gpio_dio1.pin));
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if (gpio_add_callback(sx126x_gpio_dio1.port,
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&dev_data->dio1_irq_callback) < 0) {
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LOG_ERR("Could not set GPIO callback for DIO1 interrupt.");
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return -EIO;
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}
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return 0;
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}
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