nrf51

Malloc a struct at a specific point in memory?

家住魔仙堡 提交于 2019-12-25 18:26:51
问题 I'm trying to create a struct at a specific location in memory: struct inRAM *ptr = (struct inRAM*)malloc(sizeof(struct inRAM)); But this line only allocates the memory at a place in RAM that is not retainable. I need to malloc beginning at a specific memory address for it to work properly, but how? 回答1: For embedded systems where you need to access specific memory addresses for I/O, you normally write directly to the address. You don't need to malloc here, that's used to manage blocks of

Unable to Compile nrf51 SDK example from directory other than SDK

最后都变了- 提交于 2019-12-25 01:07:35
问题 I'm devloping application on nRf51 for that i'm using... SDK : nRF51_SDK_7.2.0_cf547b5 Tool chain : GNU tools arm Embedded [arm-none-eabi version 4.9.3] Dev Board : PCA10028(nRF51 DK) I'm using following example. C:\nRF51_SDK_7.2.0_cf547b5\examples\peripheral\blinky When i compile this example using makefile at location C:\nRF51_SDK_7.2.0_cf547b5\examples\peripheral\blinky\pca10028\blank\armgcc it compiles well and also generate binary/hex. I want to move this blinky example to D Drive. So

Nordic SDK printing to serial

此生再无相见时 提交于 2019-12-13 21:17:02
问题 I have an Arduino device that runs on the Nordic SDK (it's a Red Bear Lab BLE nano). I want to be able to do a serial print into GTKTerm to be able to debug what is going on in my code. To do this I have the following code: /* * Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved. * * The information contained herein is confidential property of Nordic Semiconductor. The use, * copying, transfer or disclosure of such information is prohibited except by express written * agreement with

Bluetooth Pairing with Nrf UART is not working properly

眉间皱痕 提交于 2019-11-29 17:51:22
The Bluetooth pairing is not working properly. I am developing the Application based on Bluetooth pairing with UART. Here I have included my concept and Program.Help me out to fix the problem. My Expected Result is If the user is press the Connect button. It should be pair without user input and Confirmation Screen for Pair Request and PIN. Finally The Device is Respond back to Connected. My Actual Result is The Confirmation Screen and User Input Popup will open .After that the Device is Paired. Finally the Device is not responded back to I am connected. I am Stuck in that Problem More than 2

Bluetooth Pairing with Nrf UART is not working properly

徘徊边缘 提交于 2019-11-28 12:37:55
问题 The Bluetooth pairing is not working properly. I am developing the Application based on Bluetooth pairing with UART. Here I have included my concept and Program.Help me out to fix the problem. My Expected Result is If the user is press the Connect button. It should be pair without user input and Confirmation Screen for Pair Request and PIN. Finally The Device is Respond back to Connected. My Actual Result is The Confirmation Screen and User Input Popup will open .After that the Device is