ARM: Request help in Implementing CAN protocol in LPC1768 (2 Replies)
Hello, I am very new to the CAN protocol and started exploring it using LPC1768 Dev. Kit. While trying to analyze the sample code of CAN protocol just to send data from one LPC1768 to other LPC1768...
View ArticleNone: Mdk-keil conflicts with cubemx and HAL (3 Replies)
Hello Everyone, I am working in following environment, IDE-Version: µVision V5.22.0.0 Tool Version Numbers: Toolchain: MDK-ARM Cortex-M0/M0+ 256K for ST Version: 5.22 We have a custom board...
View ArticleARM: Significance of physical identifier (9 Replies)
Hello, I have a doubt regarding physical identifier of an Ethernet physical IC. What is the importance of their physical identifier. when I compared DP83848C and DP83640 and found not much difference...
View ArticleARM: How to get PTP timestamps for input/output packets using Network...
EMAC_STM32F7xx driver supports PTP timestamping for input/output Ethernet frames. Is there a mechanism in Network Middleware drivers to get these timestamps for any TCP/UDP packet received or...
View ArticleARM: Allocate HEAP into external SDRAM with Keil-RTX (3 Replies)
Hello! I'm developing an application which requires the heap to be located in a 32MB off-chip SDRAM. I'm using Keil RTX in the project. The problem is the application falls when a function malloc() is...
View ArticleARM: i don't understand the syntax ((typedef *) address value) (7 Replies)
hi Everybody, i copy and paste a line of code bellow as an example:"#define USB (( USB_TypeDef *) USB_BASE)" ( suppose #define USB_BASE 0x0C000 ) i don't understand the "(( USB_TypeDef *) USB_BASE)"?...
View ArticleARM: CAN_MessageRead without the use of Event (4 Replies)
Dear all, I am trying to use CAN_MessageRead from CAN driver (CMSIS Driver 2.3) but as I have to introduce that to students, I would like to make it as easy as possible. Thus, I don't want to use the...
View ArticleARM: LED with WS2812B and STM32F1? (10 Replies)
I would like RGB LED chip WS2812B used as a signal LED and thus seeking what the easiest way over 1Wire bus WS2812B set basic colors with one or two LEDs. This approach me for one LED comes...
View ArticleARM: Difference between ITM and ETM and why we go for ETM (1 Replies)
Recently, I came to know about ETM(Embedded Trace Macrocell). This is to trace instruction of program to know the bugs. The same can be achieved by ITM(Instrumentation Trace Macrocell) by using...
View ArticleC51: keyboard (3 Replies)
Hi, Below is a simple keyboard program, where i need to lock in 3 numeric digits only. The user will exit the program by pressing a non-numeric key. Until then, he can press any no. of keys. the...
View ArticleARM: how to emit arbitary string to asm output in C code? (5 Replies)
I tried __asm directive, but it does check the strings for valid instructions.
View ArticleARM: Error "USART_IT_RXNE" (1 Replies)
My application receive data in usart1 through interrupt. I generated the files in STM32CubeMX for MDK-ARM. This error appears in the compilation: ../Src/stm32f1xx_it.c(193): Error: # 20: identifier...
View ArticleARM: File system crashes when no file on SD card (1 Replies)
Hello, we bought the sources of the file system and I think I found a bug in the sources (bug in all releases to 7.3.0) : When there are no files in the SD card, the file system crashes in function...
View ArticleNone: File System Middleware - eMMC bus speed (3 Replies)
I use File System component (ver. 6.9.0) and MCI CMSIS driver (ver. 2.02). My MCU is STM32F446 and eMMC - MTFC2GMDEA-0M WT. I'd like to have 48 MHz bus speed, so I've defined...
View ArticleARM: tft ssd 1963 display numbers with large font size
hi Everybody, i have a lpc 1768 board containing ssd 1963 driver+3.2 inch lcd. please anybody tell me how can i display numbers with large font size? also how can set the font name? thanks in advance,...
View ArticleARM: global variables initialized to 0 instead of declared values (2 Replies)
Hi all, I have a bootloader-fw setup on SAM3S4C. It is working fine except a certain conditions, then the global variables of the fw part are not initialized (are zeroed instead), like if the __main()...
View ArticleARM: ARM Compiler Qualification Kit
Hi, I read that the ARM Compiler Qualification Kit provides various support documents (safety manual, test report, defect report, ...). But I don't understand what are, once purchased the...
View ArticleNone: STM32F030CC support (2 Replies)
Howdy, I bought this MDK-5 update about a year ago specifically to gain support for the STM32F030, M0 cored devices. I have been using it with the STM32F030C6 and C8. Now I need to do an STM32F030CC...
View ArticleARM: Bootloader Jump Code not working (2 Replies)
I am working on a boot loader for a STM32F103 (Cortex M3) and I cannot get the jump code to work properly. I am fairly new to ARM and I have exhausted my knowledge in trying to fix this. This is what...
View ArticleC51: Locating initialized variables at absolute address (1 Replies)
Hello, As the Summary suggests, I am trying to Locate initialized variables at an absolute address in a code segment. I have followed the steps shown here http://www.keil.com/support/docs/301.htm....
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