Marcus Chang / nRF51822

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Fork of nRF51822 by Nordic Semiconductor

nordic/bootloader_dfu/dfu_app_handler.c@85:17fe69405098, 2014-12-12 (annotated)

Committer:
marcuschang
Date:
Fri Dec 12 17:12:35 2014 +0000
Revision:
85:17fe69405098
Parent:
66:b3680699d9a4 
Write permission was not set for 'write without response' characteristics.

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Rohit Grover 66:b3680699d9a4 1 /* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
Rohit Grover 66:b3680699d9a4 2 *
Rohit Grover 66:b3680699d9a4 3 * The information contained herein is property of Nordic Semiconductor ASA.
Rohit Grover 66:b3680699d9a4 4 * Terms and conditions of usage are described in detail in NORDIC
Rohit Grover 66:b3680699d9a4 5 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
Rohit Grover 66:b3680699d9a4 6 *
Rohit Grover 66:b3680699d9a4 7 * Licensees are granted free, non-transferable use of the information. NO
Rohit Grover 66:b3680699d9a4 8 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
Rohit Grover 66:b3680699d9a4 9 * the file.
Rohit Grover 66:b3680699d9a4 10 *
Rohit Grover 66:b3680699d9a4 11 */
Rohit Grover 66:b3680699d9a4 12
Rohit Grover 66:b3680699d9a4 13 #include "dfu_app_handler.h"
Rohit Grover 66:b3680699d9a4 14 #include "bootloader_util.h"
Rohit Grover 66:b3680699d9a4 15 #include "nrf_sdm.h"
Rohit Grover 66:b3680699d9a4 16 #include "app_error.h"
Rohit Grover 66:b3680699d9a4 17
Rohit Grover 66:b3680699d9a4 18 #define IRQ_ENABLED 0x01 /**< Field identifying if an interrupt is enabled. */
Rohit Grover 66:b3680699d9a4 19 #define MAX_NUMBER_INTERRUPTS 32 /**< Maximum number of interrupts available. */
Rohit Grover 66:b3680699d9a4 20
Rohit Grover 66:b3680699d9a4 21 static void dfu_app_reset_prepare(void); /**< Forward declare of default reset handler. */
Rohit Grover 66:b3680699d9a4 22 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. */
Rohit Grover 66:b3680699d9a4 23
Rohit Grover 66:b3680699d9a4 24
Rohit Grover 66:b3680699d9a4 25 /**@brief Default reset prepare handler if application hasn't registered a handler.
Rohit Grover 66:b3680699d9a4 26 */
Rohit Grover 66:b3680699d9a4 27 static void dfu_app_reset_prepare(void)
Rohit Grover 66:b3680699d9a4 28 {
Rohit Grover 66:b3680699d9a4 29 // Reset prepare should be handled by application.
Rohit Grover 66:b3680699d9a4 30 // This function can be extended to include default handling if application does not implement
Rohit Grover 66:b3680699d9a4 31 // own handler.
Rohit Grover 66:b3680699d9a4 32 }
Rohit Grover 66:b3680699d9a4 33
Rohit Grover 66:b3680699d9a4 34
Rohit Grover 66:b3680699d9a4 35 /**@brief Function for disabling all interrupts before jumping from bootloader to application.
Rohit Grover 66:b3680699d9a4 36 */
Rohit Grover 66:b3680699d9a4 37 static void interrupts_disable(void)
Rohit Grover 66:b3680699d9a4 38 {
Rohit Grover 66:b3680699d9a4 39 uint32_t interrupt_setting_mask;
Rohit Grover 66:b3680699d9a4 40 uint32_t irq = 0; // We start from first interrupt, i.e. interrupt 0.
Rohit Grover 66:b3680699d9a4 41
Rohit Grover 66:b3680699d9a4 42 // Fetch the current interrupt settings.
Rohit Grover 66:b3680699d9a4 43 interrupt_setting_mask = NVIC->ISER[0];
Rohit Grover 66:b3680699d9a4 44
Rohit Grover 66:b3680699d9a4 45 for (; irq < MAX_NUMBER_INTERRUPTS; irq++)
Rohit Grover 66:b3680699d9a4 46 {
Rohit Grover 66:b3680699d9a4 47 if (interrupt_setting_mask & (IRQ_ENABLED << irq))
Rohit Grover 66:b3680699d9a4 48 {
Rohit Grover 66:b3680699d9a4 49 // The interrupt was enabled, and hence disable it.
Rohit Grover 66:b3680699d9a4 50 NVIC_DisableIRQ((IRQn_Type)irq);
Rohit Grover 66:b3680699d9a4 51 }
Rohit Grover 66:b3680699d9a4 52 }
Rohit Grover 66:b3680699d9a4 53 }
Rohit Grover 66:b3680699d9a4 54
Rohit Grover 66:b3680699d9a4 55
Rohit Grover 66:b3680699d9a4 56 /**@brief Function for preparing the reset, disabling SoftDevice and jump to the bootloader.
Rohit Grover 66:b3680699d9a4 57 */
Rohit Grover 66:b3680699d9a4 58 void bootloader_start(void)
Rohit Grover 66:b3680699d9a4 59 {
Rohit Grover 66:b3680699d9a4 60 m_reset_prepare();
Rohit Grover 66:b3680699d9a4 61
Rohit Grover 66:b3680699d9a4 62 uint32_t err_code = sd_power_gpregret_set(BOOTLOADER_DFU_START);
Rohit Grover 66:b3680699d9a4 63 APP_ERROR_CHECK(err_code);
Rohit Grover 66:b3680699d9a4 64
Rohit Grover 66:b3680699d9a4 65 err_code = sd_softdevice_disable();
Rohit Grover 66:b3680699d9a4 66 APP_ERROR_CHECK(err_code);
Rohit Grover 66:b3680699d9a4 67
Rohit Grover 66:b3680699d9a4 68 interrupts_disable();
Rohit Grover 66:b3680699d9a4 69
Rohit Grover 66:b3680699d9a4 70 err_code = sd_softdevice_vector_table_base_set(NRF_UICR->BOOTLOADERADDR);
Rohit Grover 66:b3680699d9a4 71 APP_ERROR_CHECK(err_code);
Rohit Grover 66:b3680699d9a4 72
Rohit Grover 66:b3680699d9a4 73 bootloader_util_app_start(NRF_UICR->BOOTLOADERADDR);
Rohit Grover 66:b3680699d9a4 74 }
Rohit Grover 66:b3680699d9a4 75
Rohit Grover 66:b3680699d9a4 76
Rohit Grover 66:b3680699d9a4 77
Rohit Grover 66:b3680699d9a4 78 void dfu_app_reset_prepare_set(dfu_app_reset_prepare_t reset_prepare_func)
Rohit Grover 66:b3680699d9a4 79 {
Rohit Grover 66:b3680699d9a4 80 m_reset_prepare = reset_prepare_func;
Rohit Grover 66:b3680699d9a4 81 }