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Questions tagged [arm7]

ARM7 is an older generation of ARM processor designs.

This generation introduced the Thumb 16-bit instruction set providing improved code density.

The ARM7 family is the world’s most widely used 32-bit embedded processor family, with more than 170 silicon licensees and over 10 Billion units shipped since its introduction in 1994.

More information at Wikipedia page of ARM7

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Arm 7 If/Else Statement

How do I convert this example of psuedo code to Arm 7?? if R8 == 1, Go to "method 1" else, Go to "method 2" Also in "method 1" R8 is changed to two (R8=2), so the next time around I want it to access "method 2". So I wanted the loop to alternate…
Ano
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UART data is lost when working with external intterupts

I am using two interrupts in ARM7 lpc2378: UART1 to receive data from some external module External Interrupt for ADC reading During the execution of the External-Interrupt ISR, data from UART1 is lost since interrupts are disabled. How should I…
Ashish Garag
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Error compiling freetype2 library for arm7 with OSX gcc: `limits.h: No such file or directory

I am trying to compile the freetype2 library for arm7, using Xcode's command line tools in OSX. I am using the following parameterisation of the project's configure script: Compiling FreeType for iPhone? These errors were produced when running the…
Jeff
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VGA Video using an ARM7

I need to put out a VGA signal from an AT91SAM7SE512. How can I do this without using an extra controller? I saw stuff on the web, but it needs to be able to modify the specific pixels.
Tristan
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ARM While directive - repeating labels

If using the WHILE asm directive, intialised like: GBLA w WHILE w < 10 w SETA w+1 ; code WEND How can we have ;code be a repeated segment involving a label (say, we conditionally branch back to it in the segment)? I have…
OJFord
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keil uVision arm

i try to translate this code in uVision(Device: Arm7), but i get 9 Error´s, what is wrong? I thing my configs are wrong. Thanks /* Daten-Bereich */ AREA Daten, DATA, READWRITE Wert: DW 10 Quadrat:DS 4 …
user2289728
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programming assembly under Linux

i write a exam about arm 7 assembly and i would like to write some code on my Linux Mint computer. Is it possible to write some basic code (Hello World, simply loops...) in the console an compile it? Thanks
user2289728
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regarding if(condition) in ARM 7

Is it not a good practice to put long condition in if statement like if(((FIO2PIN & 0x00001000)>>12)) which will give result as 0/1 at the end in ARM7? Is that so that I can only check for 0 or 1 in if condition? For example…
YMJ
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Quantlib with boost for iOS build on xcode 4.6

I'm trying to build quantlib for xcode 4.6. The project of concern is this one: https://github.com/philipbarnes/quantlib-on-iOS This quantlib project relies on this boost project: https://gitorious.org/boostoniphone/boostoniphone My problem is I…
user997122
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Running iOS SDK built in arm7 on arm7s

I have an SDK to achieve some special stream of video but I've got only the binary of this, I think this was built for arm7. I have an app built with this library and it runs great on iPhone 4, 4s and iPad 2 but when building for iPad 4th generation…
Mark E
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Prevent to generate "BX LR" in Keil

How can I force the compiler to not generate the "BX LR" for the return function. I also set the option --ARM_only(in compiler + assembler + linker) but this is not useful and I have this code at last in axf file. my target in Keil is set to…
user1973744
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Returning from ARM7 nested subroutine

Ok, I am trying to implement the selection sort algorithm in ARM7 Assembly. It starts with last element of array and works its way down to first element. It works for the first swap, but then exits before continuing on. I talked to my professor and…
vt-cwalker
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What are the best practicises to interpret an assembly program without knowing what it's supposed to do?

I'm studying to pass an assembly exam where we are supposed to interpret an assembly source file provided without comments or anything, which is a task i find particularly difficult. My question is if in these cases, which i assume happen quite…
VoteAnthony
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Build Bazel on LXC ARM take very long time

I am using LXC ARM7l Architecture and tried to build bazel onto it but it takes 50 hrs and still building at that moment !! I think that is very long time and it still printing some lines like those image There is something not right, isn't it ?…
M Y
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How to store register value in variable ARM7

I'm trying to write a program to store the larger of two values in the variable larger I'm new to ARM7 and am having trouble figuring out how to store the values in my registers to that label variable. Heres my code with the errors:
Gunner Stone
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