Seeed / Mbed 2 deprecated Seeed_Tiny_BLE_Get_Started

To get started with Seeed Tiny BLE, include detecting motion, button and battery level.

Dependencies:   BLE_API eMPL_MPU6050 mbed nRF51822

nRF51822/nordic-sdk/components/libraries/bootloader_dfu/bootloader_util_arm.c@1:fc2f9d636751, 2015-04-22 (annotated)

Committer:
yihui
Date:
Wed Apr 22 07:47:17 2015 +0000
Revision:
1:fc2f9d636751
update libraries; ; delete nRF51822/nordic-sdk/components/gpiote/app_gpiote.c to solve GPIOTE_IRQHandler multiply defined issue. temperarily change nRF51822 library to folder

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 1:fc2f9d636751 1 /* Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved.
yihui 1:fc2f9d636751 2 *
yihui 1:fc2f9d636751 3 * The information contained herein is property of Nordic Semiconductor ASA.
yihui 1:fc2f9d636751 4 * Terms and conditions of usage are described in detail in NORDIC
yihui 1:fc2f9d636751 5 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
yihui 1:fc2f9d636751 6 *
yihui 1:fc2f9d636751 7 * Licensees are granted free, non-transferable use of the information. NO
yihui 1:fc2f9d636751 8 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
yihui 1:fc2f9d636751 9 * the file.
yihui 1:fc2f9d636751 10 *
yihui 1:fc2f9d636751 11 */
yihui 1:fc2f9d636751 12
yihui 1:fc2f9d636751 13 #include "bootloader_util.h"
yihui 1:fc2f9d636751 14 #include <stdint.h>
yihui 1:fc2f9d636751 15 #include <string.h>
yihui 1:fc2f9d636751 16
yihui 1:fc2f9d636751 17
yihui 1:fc2f9d636751 18 /**
yihui 1:fc2f9d636751 19 * @brief Function for aborting current handler mode and jump to to other application/bootloader.
yihui 1:fc2f9d636751 20 *
yihui 1:fc2f9d636751 21 * @details This functions will use the address provide (reset handler) to be executed after
yihui 1:fc2f9d636751 22 * handler mode is exited. It creates an initial stack to ensure correct reset behavior
yihui 1:fc2f9d636751 23 * when the reset handler is executed.
yihui 1:fc2f9d636751 24 * See http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/Babefdjc.html
yihui 1:fc2f9d636751 25 *
yihui 1:fc2f9d636751 26 * @param[in] reset_handler Address of the reset handler to be executed when handler mode exits.
yihui 1:fc2f9d636751 27 *
yihui 1:fc2f9d636751 28 * @note This function must never be called directly from 'C' but is intended only to be used from
yihui 1:fc2f9d636751 29 * \ref bootloader_util_reset. This function will never return but issue a reset into
yihui 1:fc2f9d636751 30 * provided address.
yihui 1:fc2f9d636751 31 */
yihui 1:fc2f9d636751 32
yihui 1:fc2f9d636751 33
yihui 1:fc2f9d636751 34 /**
yihui 1:fc2f9d636751 35 * @brief Function for aborting current application/bootloader jump to to other app/bootloader.
yihui 1:fc2f9d636751 36 *
yihui 1:fc2f9d636751 37 * @details This functions will use the address provide to swap the stack pointer and then load
yihui 1:fc2f9d636751 38 * the address of the reset handler to be executed. It will check current system mode
yihui 1:fc2f9d636751 39 * (thread/handler) and if in thread mode it will reset into other application.
yihui 1:fc2f9d636751 40 * If in handler mode \ref isr_abort will be executed to ensure correct exit of handler
yihui 1:fc2f9d636751 41 * mode and jump into reset handler of other application.
yihui 1:fc2f9d636751 42 *
yihui 1:fc2f9d636751 43 * @param[in] start_addr Start address of other application. This address must point to the
yihui 1:fc2f9d636751 44 initial stack pointer of the application.
yihui 1:fc2f9d636751 45 *
yihui 1:fc2f9d636751 46 * @note This function will never return but issue a reset into provided application.
yihui 1:fc2f9d636751 47 */
yihui 1:fc2f9d636751 48 #ifdef TOOLCHAIN_ARM
yihui 1:fc2f9d636751 49 __asm static void bootloader_util_reset(uint32_t start_addr)
yihui 1:fc2f9d636751 50 {
yihui 1:fc2f9d636751 51 MASK_ONES EQU 0xFFFFFFFF ; Ones, to be loaded into register as default value before reset.
yihui 1:fc2f9d636751 52 MASK_ZEROS EQU 0x00000000 ; Zeros, to be loaded into register as default value before reset.
yihui 1:fc2f9d636751 53 xPSR_RESET EQU 0x21000000 ; Default value of xPSR after System Reset.
yihui 1:fc2f9d636751 54 EXC_RETURN_CMD EQU 0xFFFFFFF9 ; EXC_RETURN for ARM Cortex. When loaded to PC the current interrupt service routine (handler mode) willl exit and the stack will be popped. Execution will continue in thread mode.
yihui 1:fc2f9d636751 55 LDR R5, [R0] ; Get App initial MSP for bootloader.
yihui 1:fc2f9d636751 56 MSR MSP, R5 ; Set the main stack pointer to the applications MSP.
yihui 1:fc2f9d636751 57 LDR R6, [R0, #0x04] ; Load Reset handler into register 6.
yihui 1:fc2f9d636751 58
yihui 1:fc2f9d636751 59 LDR R2, =MASK_ZEROS ; Load zeros to R2
yihui 1:fc2f9d636751 60 MRS R3, IPSR ; Load IPSR to R3 to check for handler or thread mode
yihui 1:fc2f9d636751 61 CMP R2, R3 ; Compare, if 0 then we are in thread mode and can continue to reset handler of bootloader
yihui 1:fc2f9d636751 62 MOV R0, R6
yihui 1:fc2f9d636751 63 BNE isr_abort ; If not zero we need to exit current ISR and jump to reset handler of bootloader
yihui 1:fc2f9d636751 64
yihui 1:fc2f9d636751 65 LDR R4, =MASK_ONES ; Load ones to R4 to be placed in Link Register.
yihui 1:fc2f9d636751 66 MOV LR, R4 ; Clear the link register and set to ones to ensure no return.
yihui 1:fc2f9d636751 67 BX R6 ; Branch to reset handler of bootloader
yihui 1:fc2f9d636751 68 isr_abort
yihui 1:fc2f9d636751 69 LDR R4,=MASK_ONES ; Fill with ones before jumping to reset handling. We be popped as R12 when exiting ISR (Cleaning up the registers).
yihui 1:fc2f9d636751 70 LDR R5,=MASK_ONES ; Fill with ones before jumping to reset handling. We be popped as LR when exiting ISR. Ensures no return to application.
yihui 1:fc2f9d636751 71 MOV R6, R0 ; Move address of reset handler to R6. Will be popped as PC when exiting ISR. Ensures the reset handler will be executed when exist ISR.
yihui 1:fc2f9d636751 72 LDR R7,=xPSR_RESET ; Move reset value of xPSR to R7. Will be popped as xPSR when exiting ISR.
yihui 1:fc2f9d636751 73 PUSH {r4-r7} ; Push everything to new stack to allow interrupt handler to fetch it on exiting the ISR.
yihui 1:fc2f9d636751 74
yihui 1:fc2f9d636751 75 LDR R4,=MASK_ZEROS ; Fill with zeros before jumping to reset handling. We be popped as R0 when exiting ISR (Cleaning up of the registers).
yihui 1:fc2f9d636751 76 LDR R5,=MASK_ZEROS ; Fill with zeros before jumping to reset handling. We be popped as R1 when exiting ISR (Cleaning up of the registers).
yihui 1:fc2f9d636751 77 LDR R6,=MASK_ZEROS ; Fill with zeros before jumping to reset handling. We be popped as R2 when exiting ISR (Cleaning up of the registers).
yihui 1:fc2f9d636751 78 LDR R7,=MASK_ZEROS ; Fill with zeros before jumping to reset handling. We be popped as R3 when exiting ISR (Cleaning up of the registers).
yihui 1:fc2f9d636751 79 PUSH {r4-r7} ; Push zeros (R4-R7) to stack to prepare for exiting the interrupt routine.
yihui 1:fc2f9d636751 80
yihui 1:fc2f9d636751 81 LDR R0,=EXC_RETURN_CMD ; Load the execution return command into register.
yihui 1:fc2f9d636751 82 BX R0 ; No return - Handler mode will be exited. Stack will be popped and execution will continue in reset handler initializing other application.
yihui 1:fc2f9d636751 83 ALIGN
yihui 1:fc2f9d636751 84 }
yihui 1:fc2f9d636751 85 #elif defined(TOOLCHAIN_GCC)
yihui 1:fc2f9d636751 86 static void bootloader_util_reset(uint32_t start_addr)
yihui 1:fc2f9d636751 87 {
yihui 1:fc2f9d636751 88 asm(
yihui 1:fc2f9d636751 89 ".equ MASK_ONES, 0xFFFFFFFF\n\t" /* Ones, to be loaded into register as default value before reset. */
yihui 1:fc2f9d636751 90 ".equ MASK_ZEROS, 0x00000000\n\t" /* Zeros, to be loaded into register as default value before reset. */
yihui 1:fc2f9d636751 91
yihui 1:fc2f9d636751 92 "LDR r5, [r0] \n\t" /* Get App initial MSP for bootloader. */
yihui 1:fc2f9d636751 93 "MSR MSP, r5 \n\t" /* Set the main stack pointer to the applications MSP. */
yihui 1:fc2f9d636751 94 "LDR r6,[r0, #0x04] \n\t" /* Load Reset handler into register 0. */
yihui 1:fc2f9d636751 95
yihui 1:fc2f9d636751 96 "LDR r2, =MASK_ZEROS\n\t" /* Load zeros to R2 */
yihui 1:fc2f9d636751 97 "MRS r3, IPSR \n\t" /* Load IPSR to R3 to check for handler or thread mode */
yihui 1:fc2f9d636751 98 "CMP r2, r3 \n\t" /* Compare, if 0 then we are in thread mode and can continue to reset handler of bootloader */
yihui 1:fc2f9d636751 99 "MOV R0, R6 \n\t"
yihui 1:fc2f9d636751 100 "BNE isr_abort \n\t" /* If not zero we need to exit current ISR and jump to reset handler of bootloader */
yihui 1:fc2f9d636751 101
yihui 1:fc2f9d636751 102 "LDR r4, =MASK_ONES \n\t" /* Load ones to R4 to be placed in Link Register. */
yihui 1:fc2f9d636751 103 "MOV LR, r4 \n\t" /* Clear the link register and set to ones to ensure no return. */
yihui 1:fc2f9d636751 104 "BX r6 \n\t" /* Branch to reset handler of bootloader */
yihui 1:fc2f9d636751 105 "isr_abort: \n\t"
yihui 1:fc2f9d636751 106 "LDR R4,=MASK_ONES \n\t" /* Fill with ones before jumping to reset handling. We be popped as R12 when exiting ISR (Cleaning up the registers). */
yihui 1:fc2f9d636751 107 "LDR R5,=MASK_ONES \n\t" /* Fill with ones before jumping to reset handling. We be popped as LR when exiting ISR. Ensures no return to application. */
yihui 1:fc2f9d636751 108 "MOV R6, R0 \n\t" /* Move address of reset handler to R6. Will be popped as PC when exiting ISR. Ensures the reset handler will be executed when exist ISR. */
yihui 1:fc2f9d636751 109 "LDR R7,=xPSR_RESET\n\t" /* Move reset value of xPSR to R7. Will be popped as xPSR when exiting ISR. */
yihui 1:fc2f9d636751 110 "PUSH {r4-r7} \n\t" /* Push everything to new stack to allow interrupt handler to fetch it on exiting the ISR. */
yihui 1:fc2f9d636751 111
yihui 1:fc2f9d636751 112 "LDR R4,=MASK_ZEROS\n\t" /* Fill with zeros before jumping to reset handling. We be popped as R0 when exiting ISR (Cleaning up of the registers). */
yihui 1:fc2f9d636751 113 "LDR R5,=MASK_ZEROS\n\t" /* Fill with zeros before jumping to reset handling. We be popped as R1 when exiting ISR (Cleaning up of the registers). */
yihui 1:fc2f9d636751 114 "LDR R6,=MASK_ZEROS\n\t" /* Fill with zeros before jumping to reset handling. We be popped as R2 when exiting ISR (Cleaning up of the registers). */
yihui 1:fc2f9d636751 115 "LDR R7,=MASK_ZEROS\n\t" /* Fill with zeros before jumping to reset handling. We be popped as R3 when exiting ISR (Cleaning up of the registers). */
yihui 1:fc2f9d636751 116 "PUSH {r4-r7} \n\t" /* Push zeros (R4-R7) to stack to prepare for exiting the interrupt routine. */
yihui 1:fc2f9d636751 117
yihui 1:fc2f9d636751 118 "LDR R0,=EXC_RETURN_CMD\n\t" /* Load the execution return command into register. */
yihui 1:fc2f9d636751 119 "BX R0 \n\t" /* No return - Handler mode will be exited. Stack will be popped and execution will continue in reset handler initializing other application. */
yihui 1:fc2f9d636751 120 : /* output operands */
yihui 1:fc2f9d636751 121 : /* input operands */
yihui 1:fc2f9d636751 122 : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7" /* clobber list */
yihui 1:fc2f9d636751 123 );
yihui 1:fc2f9d636751 124 }
yihui 1:fc2f9d636751 125 #endif /* TOOLCHAIN_ARM */
yihui 1:fc2f9d636751 126
yihui 1:fc2f9d636751 127 void bootloader_util_app_start(uint32_t start_addr)
yihui 1:fc2f9d636751 128 {
yihui 1:fc2f9d636751 129 bootloader_util_reset(start_addr);
yihui 1:fc2f9d636751 130 }