Diff: nRF51822/nordic-sdk/components/libraries/bootloader_dfu/experimental/dfu_app_handler.c

Revision:

1:fc2f9d636751

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF51822/nordic-sdk/components/libraries/bootloader_dfu/experimental/dfu_app_handler.c	Wed Apr 22 07:47:17 2015 +0000
@@ -0,0 +1,162 @@
+/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is property of Nordic Semiconductor ASA.
+ * Terms and conditions of usage are described in detail in NORDIC
+ * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ */
+
+#include <string.h>
+#include "dfu_app_handler.h"
+#include "bootloader_util.h"
+#include "nrf.h"
+#include "nrf_sdm.h"
+#include "ble_gatts.h"
+#include "app_error.h"
+#include "dfu_ble_svc.h"
+#include "device_manager.h"
+
+#define IRQ_ENABLED            0x01                                            /**< Field identifying if an interrupt is enabled. */
+#define MAX_NUMBER_INTERRUPTS  32                                              /**< Maximum number of interrupts available. */
+
+static void                    dfu_app_reset_prepare(void);                    /**< Forward declare of default reset handler. */
+static dfu_app_reset_prepare_t m_reset_prepare = dfu_app_reset_prepare;        /**< Callback function to application to prepare for system reset. Allows application to cleanup of service and memory prior to reset. */
+static dfu_ble_peer_data_t     m_peer_data;                                    /**< Peer data to be used for data exchange when reseting into DFU mode. */
+static dm_handle_t             m_dm_handle;                                    /**< Device Manager handle with instance id's of current BLE connection. */
+static bool                    m_dm_handle_valid = false;                      /**< Variable indicating if the Device Manager handle is valid. */
+
+
+/**@brief Default reset prepare handler if application hasn't registered a handler.
+ */
+static void dfu_app_reset_prepare(void)
+{
+    // Reset prepare should be handled by application.
+    // This function can be extended to include default handling if application does not implement
+    // own handler.
+}
+
+
+/**@brief Function for disabling all interrupts before jumping from bootloader to application.
+ */
+static void interrupts_disable(void)
+{
+    uint32_t interrupt_setting_mask;
+    uint32_t irq = 0; // We start from first interrupt, i.e. interrupt 0.
+
+    // Fetch the current interrupt settings.
+    interrupt_setting_mask = NVIC->ISER[0];
+
+    for (; irq < MAX_NUMBER_INTERRUPTS; irq++)
+    {
+        if (interrupt_setting_mask & (IRQ_ENABLED << irq))
+        {
+            // The interrupt was enabled, and hence disable it.
+            NVIC_DisableIRQ((IRQn_Type)irq);
+        }
+    }
+}
+
+
+/**@brief Function for providing peer information to DFU for re-establishing bonded connection in
+ *        DFU mode.
+ */
+static void dfu_app_set_peer_data(void)
+{
+    uint32_t        err_code;
+    dm_sec_keyset_t key_set;
+
+/** [DFU bond sharing] */
+    err_code = dm_distributed_keys_get(&m_dm_handle, &key_set);
+    APP_ERROR_CHECK(err_code);
+
+    m_peer_data.addr     = key_set.keys_central.p_id_key->id_addr_info;
+    m_peer_data.enc_info = *key_set.keys_central.enc_key.p_enc_info;
+    m_peer_data.irk      = key_set.keys_central.p_id_key->id_info;
+
+    err_code = dfu_ble_svc_set_peer_data(&m_peer_data);
+    APP_ERROR_CHECK(err_code);
+/** [DFU bond sharing] */
+}
+
+
+/**@brief Function for preparing the reset, disabling SoftDevice and jump to the bootloader.
+ */
+void bootloader_start(void)
+{
+    m_reset_prepare();
+
+    uint32_t err_code = sd_power_gpregret_set(BOOTLOADER_DFU_START);
+    APP_ERROR_CHECK(err_code);
+
+    err_code = sd_softdevice_disable();
+    APP_ERROR_CHECK(err_code);
+
+    err_code = sd_softdevice_vector_table_base_set(NRF_UICR->BOOTLOADERADDR);
+    APP_ERROR_CHECK(err_code);
+
+    // Commenting out the following block because it brings in unwanted dependencies from bonding.
+    // TODO: discuss this with Nordic.
+    // if (m_dm_handle_valid)
+    // {
+    //     dfu_app_set_peer_data();
+    // }
+
+    NVIC_ClearPendingIRQ(SWI2_IRQn);
+    interrupts_disable();
+    bootloader_util_app_start(NRF_UICR->BOOTLOADERADDR);
+}
+
+
+void dfu_app_on_dfu_evt(ble_dfu_t * p_dfu, ble_dfu_evt_t * p_evt)
+{
+    switch (p_evt->ble_dfu_evt_type)
+    {
+        case BLE_DFU_START:
+            // Starting the bootloader - will cause reset.
+            bootloader_start();
+            break;
+
+        case BLE_DFU_VALIDATE:
+        case BLE_DFU_ACTIVATE_N_RESET:
+        case BLE_DFU_SYS_RESET:
+        case BLE_DFU_RECEIVE_INIT_DATA:
+        case BLE_DFU_RECEIVE_APP_DATA:
+        case BLE_DFU_PACKET_WRITE:
+        case BLE_DFU_PKT_RCPT_NOTIF_ENABLED:
+        case BLE_DFU_PKT_RCPT_NOTIF_DISABLED:
+        case BLE_DFU_BYTES_RECEIVED_SEND:
+        default:
+            {
+                // Unsupported event received from DFU Service.
+                // Send back BLE_DFU_RESP_VAL_NOT_SUPPORTED message to peer.
+                uint32_t err_code = ble_dfu_response_send(p_dfu,
+                                                          BLE_DFU_START_PROCEDURE,
+                                                          BLE_DFU_RESP_VAL_NOT_SUPPORTED);
+                APP_ERROR_CHECK(err_code);
+            }
+            break;
+    }
+}
+
+
+void dfu_app_reset_prepare_set(dfu_app_reset_prepare_t reset_prepare_func)
+{
+    m_reset_prepare = reset_prepare_func;
+}
+
+
+void dfu_app_set_dm_handle(dm_handle_t const * p_dm_handle)
+{
+    m_dm_handle_valid = false;
+
+    if (p_dm_handle != NULL)
+    {
+        m_dm_handle       = *p_dm_handle;
+        m_dm_handle_valid = true;
+    }
+}
+
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