esp32-idf lora休眠与唤醒
时间: 2023-10-28 09:06:02 浏览: 62
针对您的问题,我可以给出以下思路:
1. 使用esp32-idf中的定时器模块,设置定时器中断,定时器中断处理函数中执行进入休眠模式的操作。
2. 在esp32主机中,使用GPIO模块配置唤醒lora模块所需的GPIO引脚,并通过设置引脚输出电平的方式来唤醒lora模块。
下面是具体步骤:
进入休眠模式:
1. 在esp32主机中,通过lora模块的SPI接口发送休眠命令给lora模块,例如SX1278模块的休眠命令为0xB0。
2. 在esp32主机中,设置lora模块的唤醒引脚所对应的GPIO引脚为输出模式,并将其输出低电平,使lora模块进入休眠状态。
3. 在esp32主机中,等待lora模块的唤醒事件,例如使用GPIO模块的中断功能来监听唤醒引脚的状态变化。
唤醒lora模块:
1. 在esp32主机中,使用GPIO模块配置lora模块的唤醒引脚所对应的GPIO引脚为输出模式,并将其输出高电平,使lora模块从休眠状态中唤醒。
2. 在esp32主机中,等待lora模块完成唤醒,例如等待一段时间或者使用GPIO模块的中断功能来监听唤醒引脚的状态变化。
3. 在esp32主机中,通过lora模块的SPI接口发送唤醒命令给lora模块,例如SX1278模块的唤醒命令为0xAB。
需要注意的是,在实际应用中,唤醒引脚的具体配置和唤醒时间需要根据lora模块的具体规格和要求来进行选择和配置。同时,需要合理设置唤醒时间和休眠周期,以达到节能和稳定性的最佳平衡。
希望以上内容对您有所帮助!
相关问题
esp32-idf lora休眠唤醒代码
以下是ESP32-IDF中使用LoRa进行休眠和唤醒的示例代码:
```
#include "esp_sleep.h"
#include "driver/gpio.h"
#include "esp_log.h"
#include "driver/spi_master.h"
#include "sx1276.h"
#define SPI_MISO_PIN GPIO_NUM_19
#define SPI_MOSI_PIN GPIO_NUM_27
#define SPI_SCLK_PIN GPIO_NUM_5
#define SPI_CS_PIN GPIO_NUM_18
#define LORA_RESET_PIN GPIO_NUM_14
#define LORA_DIO0_PIN GPIO_NUM_26
#define LORA_DIO1_PIN GPIO_NUM_33
#define LORA_DIO2_PIN GPIO_NUM_32
#define LORA_BANDWIDTH 0
#define LORA_SPREADING_FACTOR 7
#define LORA_CODING_RATE 1
#define LORA_SYNC_WORD 0x12
static const char *TAG = "lora_sleep_wakeup";
spi_device_handle_t spi;
void lora_sleep()
{
ESP_LOGI(TAG, "Entering LoRa sleep mode...");
sx1276_set_standby(spi);
esp_sleep_enable_ext0_wakeup(LORA_DIO0_PIN, 0);
esp_sleep_enable_ext1_wakeup(1ULL << LORA_RESET_PIN, ESP_EXT1_WAKEUP_ANY_HIGH);
esp_deep_sleep_start();
}
void lora_wakeup()
{
ESP_LOGI(TAG, "Waking up from LoRa sleep mode...");
gpio_set_direction(LORA_RESET_PIN, GPIO_MODE_OUTPUT);
gpio_set_level(LORA_RESET_PIN, 0);
vTaskDelay(pdMS_TO_TICKS(1));
gpio_set_level(LORA_RESET_PIN, 1);
vTaskDelay(pdMS_TO_TICKS(10));
sx1276_init(spi, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, LORA_CODING_RATE, LORA_SYNC_WORD, LORA_DIO0_PIN, LORA_DIO1_PIN, LORA_DIO2_PIN);
}
void app_main()
{
spi_bus_config_t spi_bus_cfg = {
.mosi_io_num = SPI_MOSI_PIN,
.miso_io_num = SPI_MISO_PIN,
.sclk_io_num = SPI_SCLK_PIN,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = 0,
};
spi_device_interface_config_t spi_dev_cfg = {
.clock_speed_hz = 10000000,
.mode = 0,
.spics_io_num = SPI_CS_PIN,
.queue_size = 1,
};
esp_err_t ret = spi_bus_initialize(HSPI_HOST, &spi_bus_cfg, 1);
assert(ret == ESP_OK);
ret = spi_bus_add_device(HSPI_HOST, &spi_dev_cfg, &spi);
assert(ret == ESP_OK);
sx1276_init(spi, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, LORA_CODING_RATE, LORA_SYNC_WORD, LORA_DIO0_PIN, LORA_DIO1_PIN, LORA_DIO2_PIN);
while (1) {
ESP_LOGI(TAG, "Sending LoRa packet...");
sx1276_send_packet(spi, "Hello, LoRa!", strlen("Hello, LoRa!"));
lora_sleep();
lora_wakeup();
}
}
```
在这个示例代码中,我们使用ESP32的Deep Sleep功能和外部中断来实现LoRa的休眠和唤醒。在进入休眠模式之前,我们通过调用`sx1276_set_standby`函数将LoRa芯片设置为待机模式,并使用`esp_sleep_enable_ext0_wakeup`和`esp_sleep_enable_ext1_wakeup`函数来启用外部中断唤醒。在唤醒时,我们首先将LoRa芯片复位,然后重新初始化它。
同时,需要注意的是,在进入Deep Sleep模式之前,我们还需要将LoRa芯片从SPI总线上断开,以避免在Deep Sleep期间消耗电力。在唤醒时,我们需要重新连接LoRa芯片到SPI总线上,并重新初始化它。
esp32-idf sx1268休眠唤醒代码
好的,下面是一个简单的esp32-idf和sx1268的休眠唤醒代码示例:
```c
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "driver/spi_master.h"
#include "sx126x.h"
#define SX126X_SPI_HOST HSPI_HOST
#define SX126X_PIN_CS GPIO_NUM_15
#define SX126X_PIN_BUSY GPIO_NUM_27
#define SX126X_PIN_RESET GPIO_NUM_33
spi_device_handle_t spi_handle;
void sx126x_sleep(sx126x_t * sx126x)
{
// Set sleep mode
sx126x_set_sleep(sx126x, SX126X_SLEEP_CFG_RC);
// Configure RTC timer to wake up sx126x after 10 seconds
sx126x_rtc_set_alarm(sx126x, 10 * SX126X_RTC_TICKS_PER_SECOND);
// Disable spi
spi_bus_remove_device(spi_handle);
spi_bus_free(SX126X_SPI_HOST);
// Enter deep sleep mode
esp_deep_sleep_start();
}
void sx126x_wakeup(sx126x_t * sx126x)
{
// Initialize spi
spi_bus_config_t spi_bus_cfg = {
.mosi_io_num = GPIO_NUM_23,
.miso_io_num = GPIO_NUM_19,
.sclk_io_num = GPIO_NUM_18,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = 0,
.flags = SPICOMMON_BUSFLAG_MASTER
};
spi_device_interface_config_t spi_dev_cfg = {
.clock_speed_hz = 10 * 1000 * 1000,
.mode = 0,
.spics_io_num = SX126X_PIN_CS,
.queue_size = 1,
.flags = SPI_DEVICE_NO_DUMMY,
.command_bits = 8,
.address_bits = 0,
};
spi_bus_initialize(SX126X_SPI_HOST, &spi_bus_cfg, 1);
spi_bus_add_device(SX126X_SPI_HOST, &spi_dev_cfg, &spi_handle);
// Send wakeup command to sx126x
sx126x_set_standby(sx126x);
vTaskDelay(10 / portTICK_PERIOD_MS);
sx126x_set_fs(sx126x);
vTaskDelay(1 / portTICK_PERIOD_MS);
// Wait for sx126x to complete wakeup
while (gpio_get_level(SX126X_PIN_BUSY) == 1) {
vTaskDelay(1 / portTICK_PERIOD_MS);
}
// Re-enable spi
spi_bus_remove_device(spi_handle);
spi_bus_free(SX126X_SPI_HOST);
spi_bus_initialize(SX126X_SPI_HOST, &spi_bus_cfg, 1);
spi_bus_add_device(SX126X_SPI_HOST, &spi_dev_cfg, &spi_handle);
}
void app_main(void)
{
// Initialize sx126x
sx126x_t sx126x = {
.spi_host = SX126X_SPI_HOST,
.spi_cs = SX126X_PIN_CS,
.spi_handle = spi_handle,
.busy_pin = SX126X_PIN_BUSY,
.reset_pin = SX126X_PIN_RESET,
};
sx126x_init(&sx126x);
// Put sx126x to sleep
sx126x_sleep(&sx126x);
// Wake up sx126x
sx126x_wakeup(&sx126x);
// Do something with sx126x
// ...
}
```
注意,上述代码仅供参考,具体的实现可能会因为不同的硬件和软件环境而有所不同。