Questions tagged [sram]
Volatile memory used by Arduino programs for storing variables and other data at runtime.
62 questions
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How do I enable CONFIG_SPIRAM_SUPPORT for ESP32 S3 on Arduino?
I'm trying to use PSRAM with the TFT_eSPI library, but it fails because CONFIG_SPIRAM_SUPPORT isn't defined.
In Arduino -> Tools -> PSRAM I selected OPI PSRAM as the board manufacturer (the ...
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Help reducing dynamic memory usage with LoRa library
I have combined code that reads heart rate and SPO2 then sends the data using LoRaWAN. Using these 2 libraries that work well by themselves LoraWAN lib | MAX30102 lib. My board is an Arduino Pro or ...
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Does the bootloader use some SRAM?
I want to use all SRAM of an Arduino by writing the code in assembly. But does the bootloader use some SRAM while the program is running, and if the answer is yes would changing that data lead to ...
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How can i reduce my global variable use? Attiny85
I'm trying to compile my code but i keep exceeding my global variable memory by 12%.
Is there anything i can do in my code to further reduce RAM usage?
Or do i have to do modifications to the ...
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Sending data to server
I have an SD card have a very big file (1M character). i try to load it into memory in terms of 4K character array ( The maximum I could do using Arduino Mega). but this take almost 250 call to the ...
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RAM cost of entering functions
A friend has told me I shouldn't rely on functions because, during execution, they occupy a significant amount of RAM.
Is that true or, if it isn't, what's the maximum suggested level of function ...
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Writing a 1Mb bitmap to an SDcard with only 96kB RAM
My goal is to have an Arduino Due (96 KB RAM) write a +-1MB bitmap to an SD card.
I have an array of a several coordinates on my Arduino Due and I would like to generate the bitmap where all the ...
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Connect SDRAM to STM32
Well, first of all hello to everything and thanks for reading my question. I am designing a board with STM32F730R8T6 MCU, and I want to connect MT48LC16M16A2P-6A to it which is 4MB SDRAM chip. The ...
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External RAM (23LC1024) and external Flash (W25Q64JVSSIQ) with Sparkfun SAMD21
i'm trying to extend the capabilities of the Sparkfun SAMD21. My question is, which pins do I have to share? I mean, I understand that MISO, MOSI and SCK are shared, but CS connects each to a ...
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Using ESP32 Cam internal RAM
I am new to the ESP32 series of boards.I powered up my ESP32 Cam board using the Vcc pin supplying about 7.4V using two 18650 batteries only to find out later that was a completely incorrect way to ...
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String(int) function stopping the Arduino
Well I am trying make an application with arduino leonardo and GSM Shield. There are conditions if, else if, else .. etc
if (smsMetni.indexOf("DURUM") != -1) {
Serial.println("SMS ...
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Serial printing from flash memory (F() macro, PROGMEM, sprintf_P, SPTR)
I have been testing various techniques on an Arduino Uno for serial printing from flash memory instead of RAM. At the same time, I have been using the freeMemory() function from Adafruit.
I created a ...
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Is there a way to add external RAM (let's say 100 MB or 200 MB) in this audio buffer mixing context?
I'm coding a music sampler device: for fast playback / minimal latency (only a few milliseconds), it's better to have all audio .wav samples we want to use in RAM, so that when some of them are ...
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LDC paired with Arduino locks up and freezes. Out of SPRAM?
I am making an alarm clock using a 4x20 lcd display, rtc, and Arduino Pro Mini 3.3v. I have implemented a menu system for setting the time/date that blinks the text on the lcd display to indicate that ...
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How is it possible to access the CPU registers using memory addresses?
The following is taken from ATmega328-328P Data sheet.
According to this, I can access all the 32 registers in CPU using memory addresses. For example:
unsigned char *register = 0x0;
will access the ...
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