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Questions tagged [pic32]

PIC32 is a family of 32-bit microcontrollers made by Microchip Technology. They contain a MIPS32 core, developed by MIPS Technologies.

PIC32 is a family of 32-bit microcontrollers made by Microchip Technology. They contain a MIPS32 core, developed by MIPS Technologies.

PIC32 microcontrollers have been announced in November 2007

Features include

  • Execution speed up to 80 MHz
  • Flash size up to 512 kByte
  • Programs can be executed from RAM
  • Available in different packages, including Dual in-line (DIP)

A PICkit3 is required to program these microcontrollers. Microchip offers an IDE (MPLAB X) which includes a modified GCC compiler (xc32). It is possible to compile programs for PIC32 using the free mips-elf-gcc compiler as well.

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Software interrupt in freeRTOS

I am learning freeRTOS. I need to write software interrupt ISR handler in freeRTOS for PIC32 platform (cerebot Mx7ck). I went through the documentation but no help. Please somebody help.
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pic32 start bit does not clear -- Basic I2C setup

I am new to embedded programming and am trying to get my first I2C project working. I am using the PIC32MX795F512L. I am pretty much following the microchip datasheet for I2C on PIC32. The problem I'm having is the S bit is never cleared from the…
user36927
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microchip exception handling

While running my program on a microchip ICD3 device, the exception handling looks weird. The program will stop response while exception occurs. While checking the code, I noticed that the default-general-exception-handler.c will create an infinite…
lucemia
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Minimal PIC32 program is huge

I am trying to get a simple embedded PIC32MX "Hello, World!" program to compile without using MPLAB X. For Chip-support, I am using the spicastack/pic32-parts-free library. Which is as far as I can see, just a redistribution of Microchip's XC32…
Sillydan
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How to program the PIC32 in Assembly?

I'm trying to program a PIC32 MM0064GPL028 in Assembly, to do MIPS32 exercises on a real CPU, instead of the simulator that we use in my course (QtSpim), without any success. The only guide I found on the internet is this, but I get an error when I…
Lugerp
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Cant see printf in mplabX IDE anywhere... Why?

I tried this in a function, but I dont see anywhere the result in MPLAB X IDE. Why? Where I can find the printed result? I am using pic32 Curiosity development board and XC32. int a = 5; int b = 10; printf("a = %d\nb = %d\n", a, b); Any info?…
Firestarter without a lighter
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How can one create a unique label for each macro call using mips assembly in MPLAB X

I have a macro which performs a comparison, and jumps to the end of the macro if that comparison isn't true. Here is a simplified example: .macro do_work_if_value_not_zero value li s0, value bne s0, zero, exit_label nop // Do…
user9683851
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parse and replace NaN values before sprintf()

So I've got a compiler bug with their low level _fconvert() function that the vendor has marked as low priority, but the effect is that the embedded system will crash if I send a NaN value to a printf() style function. I'd like to write a wrapper…
grambo
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Microchip Starter Kits with SPI mode

I want to use microcontrollers for communicating data by SPI. So, I have chosen firstly the Microchip USB Starter Kit III module which has a PIC32MX470F512L. I tried several ways to code its SPI, but only the clock signal SCK can be seen on an…
Dey
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pic32 jumping out of bootloader causes general exception

I have an mplabx project with a custom bootloader and application for the PIC32MX795F512L. All throughout its development, I have been jumping from the bootloader to the application with no problem using the line: ((void…
user545199
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Pic32 bootloader writing to memory

I am having issues getting a bootloader for the PIC32MX795F512L working. I based it off of the example code on the microchip website. Here is the section of code that I have that should write the memory, I have verified the bootloader up to this…
user2076574
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MPLAB X IDE v6.10, when i try to load my projects and open it. it gives an message "Loading" and the project doesnt open & the debugger is disabled

In MPLAB X IDE V6.10, Initally it is working fine. But after sometime when i tired to open project it is showing loading but project is not opening. And Uploading and Debugger option is disbale can't able to click and do upload the program. Even…
Sivapraveen S
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Bit-packing Problem in a Union (Register Mapping)

I am trying to get a union together to map out some bit fields in a register map. The code I have is the following: typedef union __attribute__((packed)) { struct { uint8_t MODE:3; uint8_t VSHCT:3; uint8_t VBUSCT:3; …
awb
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PIC32 8 bytes on static variable

For some reason, when I give these two variables the "used" attribute, the compiler makes them 8 bytes long. Without it, the compiler optimizes them away as I don't use them (yet). Anyone knows why this is? And are any workarounds for this…
Oscar K
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can data from a sensor be read in a function

I am using the icm 20948 sensor, programming on MPLABx running harmonyV3.i2c is communication mode. Can I read and write in a function, does it have to be in a while loop? For example would: while(SERCOM1_I2C_IsBusy())…
Oluwatoni Bodunrin
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