nrf52832空中升级的代码

以下是基于nrf52832的空中升级（OTA）代码示例：

#include <stdint.h>
#include <stdbool.h>
#include "nrf.h"
#include "nrf_sdm.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"
#include "nrf_drv_clock.h"
#include "nrf_drv_power.h"
#include "nrf_dfu.h"
#include "nrf_dfu_flash.h"
#include "nrf_dfu_handling_error.h"
#include "nrf_dfu_settings.h"
#include "nrf_dfu_transport.h"
#include "nrf_dfu_utils.h"
#include "nrf_dfu_validation.h"
#include "nrf_bootloader_info.h"

#define LED_PIN 13

static void leds_init()
{
    nrf_gpio_cfg_output(LED_PIN);
}

static void leds_on()
{
    nrf_gpio_pin_clear(LED_PIN);
}

static void leds_off()
{
    nrf_gpio_pin_set(LED_PIN);
}

/**
 * @brief Function for application main entry.
 */
int main(void)
{
    uint32_t err_code;

    // Initialize the clock.
    err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);

    // Start the low-frequency clock.
    nrf_drv_clock_lfclk_request(NULL);

    // Initialize the power module.
    err_code = nrf_drv_power_init(NULL);
    APP_ERROR_CHECK(err_code);

    // Initialize the LED pins.
    leds_init();

    // Wait for the power module to be initialized.
    while (!nrf_drv_power_usb_detected())
    {
        nrf_delay_ms(100);
    }

    // Turn on the LED.
    leds_on();

    // Initialize the DFU module.
    err_code = nrf_dfu_settings_init(true);
    APP_ERROR_CHECK(err_code);

    // Register the transport layer.
    err_code = nrf_dfu_transport_register(nrf_dfu_uart_transport);
    APP_ERROR_CHECK(err_code);

    // Start the DFU module.
    err_code = nrf_dfu_init();
    APP_ERROR_CHECK(err_code);

    // Turn off the LED.
    leds_off();

    // Enter the main loop.
    while (true)
    {
        nrf_dfu_continue();
    }
}

以上代码实现了空中升级（OTA）的基本流程，具体实现方式可以根据实际需要进行调整。在使用该代码之前，需要确保已经在芯片中烧录了DFU bootloader，并且已经在固件中添加了OTA升级的相关代码。