General PIC32 Topics

General PIC32 Topics (p.2)
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Wavelength

Chaining DMA?

All,I have a new project I am considering that requires 24 bits output over DMA. So the idea I had was to use a 64pin QFN part and have PORTB setup as a 16bit output and then use an 8 bit PMP and chain two DMA together like this: a) Set a timer up for the output rate.b) DMA0 triggers loads PORTB wit..
12
2021/01/15 07:31:01
labeardslee

Multiple Sleep Wake-Ups with WDT/Deep Sleep

Hi, I'm using a PIC32MX274 XLP starter kit with a PIC32MX274F256D MCU. I'm trying to use the watchdog timer to wake the device up from sleep multiple times. Basically, I'm trying to get an extended sleep mode by having the device sleep for the max WDT time out period and then go right back to sleep...
2
2021/01/14 16:19:44
nick23

USB_DEVICE_EndpointWrite does not trigger event USB_DEVICE_EVENT_ENDPOINT_WRITE_COMPLETE

Hi,I'm trying to send information from my device to the host using USB_DEVICE_EndpointWrite (), but the event never gets executed with causes my application to hang. This is how I call the function: USB_DEVICE_EndpointWrite(appData.deviceHandle,<br /> &appData.writeTransferHandle,<br /> appData...
2
2021/01/14 09:25:18
Klema

PIC32MZ assembly question

Hello,I have a few question about assembly on PIC32MZ EFH. I write code in clear assembly and:1. Why when i measure cycle count (with stop watch) on just single instruction (i.e. NOP) i get 4 cycle count ? (i think there should be 5 from 5 stage pipeline)2. Why when on top on the file i add '.set mi..
6
2021/01/14 09:22:45
TJvV

PIC32MX757F512L: Timer 1 interrupt when setting prescaler with external clock source

Hi, I am currently working on a power saving mode for my project using the PIC32MX757F512L with Harmony 2.06 and XC32 v2.41. In this mode the PIC is clocked by the SOSC (32768 Hz) and I want the PIC to enter SLEEP with a periodic wake up.My idea was to use Timer 1 as the wake up source for this. My ..
1
2021/01/14 08:42:06
chri

PIC32MX470 and clock speed

Does anyone have problems running PIC32MX470 at 120MHz? I have some chips that locks while running in a random way, I checked the Wait state and they are ok, i use Harmony v2.06. If i dowscale the clock at 100MHz all run perfectly.thank you..
15
2021/01/14 05:53:03
jazzyj

nbproject/ makefile problem with program on p32mx460f512l.h

Dear all and happy new year.I reusing a program which had already bean compiled (and work) on a MPLAB 8.I use this program for a remote IR and a LCD screen.This is my first installation of MPLAB X with XC32.It have this problem when i build my programme; "C:\Program Files\Microchip\xc32\v2.50\bin\xc..
2
2021/01/13 00:57:36
kuku

bootloader, linker file. Move from 32MX150f to 170F

In some project I have no enough space in flash, so I simple change IC form 150f to 170. I also use old microchip SD card bootloader. (C compiler in version1.32) The problem is that I cannot find linker file for 170F and Im not sure, maybe I need to change it manually?..
4
2021/01/12 12:22:30
xDNA

Watchdog is Always Enabled, ATSAMC21

Good morning, I am currently working with SAMD21 Xplained, and I have problems configuring the Watchdog Timer, which one is always inhabited, I configure the FUSES to keep it disabled, and when checking the CTRLA register, both Enable and AlwaysON are always in SET , this makes the Microcontroller a..
5
2021/01/12 09:43:59
r0shan

Microcontroller not detecting in IPE and Pickit3

Hi, I have bought PIC32MZ2048EFM064 IC and Adaptor and made circuit in General Purpose board. I have made following connections:1) MCLR - pin 92) VDD - pin 26 (vdd)3) GND - pin 25 (vss)4) PGD - pin 185) PGC - pin 17 And Microcontroller is not detecting in MPLAB X IPE as well as in PICKIT3. I don't k..
7
2021/01/12 08:32:37

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