IDE for the Microchip PIC series of microcontrollers.
Integrated Development Environment for the Microchip PIC series of microcontrollers.
Questions tagged [mplab]
614 questions
0
votes
1 answer
"initializer element is not constant" when using constant structs
I'm working with PIC32, MPLABX and XC32 and currently I have to make a lot of hardware description for each peripheral. Some of the tasks are something like:
In file1.h
extern const stream_t EHAL_PIN_STREAM_TEMPLATE;
In file1.c
const stream_t…
rnunes
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0
votes
0 answers
MPLabX IDE Linker error with X32 compiler
I am using pic32 device for my c++ project.
While compiling i got the following error:
"C:\Program Files (x86)\Microchip\xc32\v1.30\bin\xc32-g++.exe"
-mprocessor=32MZ2048ECM144
-o dist/default/production/DF.X.production.elf
…
user3046395
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0
votes
1 answer
PIC16f877a switch not reading correctly
I am having a problem with a switch case when using the UART functions. I receive data and store it into the eeprom. I think call a switch statement to see what was sent. I read the eeprom and the information is right but I am just not able to…
user3107657
- 11
0
votes
2 answers
PIC32 becomes unresponsive after a few hours
I have a PIC32MX340F512 board developed by another company for us, The board has a DS1338 RTCC and 24LC32A eeprom, and display unit on an I2C bus, on this bus i included a TSL2561 I2C light sensor, i wrote code in c to poll the light sensor…
Manditereza Kudzai
- 11
- 2
0
votes
1 answer
Setting initial value for timer -register name
I have a timer in XC8 MPlab with PIC16F690 that is running great.
I want to change its initial value. I could not find how to set a value into its register so it starts from that value.
I'm looking for the syntax for that register to fill it with…
Curnelious
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0 answers
DMA interrupt for SPI
I'm trying to recreate a project of writing to an SD card (using FatFS) for a dsPIC33FJ128GP802 microcontroller.
Currently to collect the date from the SPI I have a do/while that loops 512 times and writes a dummy value to the SPI buffer, wait for…
ritchie888
- 583
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3 answers
How to convert two Bytes array into unsigned long variable?
I want to combine two bytes into one unsigned long variable, my current code does not work. I am using MPLAB C18 compiler, this is my code.
unsigned long red = 0;
BYTE t[2];
t[0] = 0x12;
t[1] = 0x33;
red = 100 * t[0] +…
cookie monster
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votes
7 answers
How do you write and read to memory with PIC18?
I want to store a number to PIC18 then retain it even if the power is lost or the unit is reset. I think my writing code portion looks fine, just the reading portion of it looks strange after the unit is reset.
I am using the following code which I…
Ammar
- 1,203
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- 64
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1 answer
Getting Array Values from the user on PIC18?
First let me show what's working then I will show what's not working. This code gives the right result.
unsigned long timeOn;
long d[10];
d[0] = 8;
d[1] = 6;
d[2] = 0;
d[3] = 0;
d[4] = 0;
timeOn = 10000*d[0] + 1000*d[1] + 100*d[2] + 10*d[3] + …
Ammar
- 1,203
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- 64
0
votes
1 answer
Data Types with PIC18?
Which data type do I use to store the following value ?
Value: 86400
code:
int d[6];
unsigned int all;
d[0] = 8;
d[1] = 6;
d[2] = 4;
d[3] = 0;
d[4] = 0;
all = 10000*d[0] + 1000*d[1] + 100*d[2] + 10*d[3] + d[4];
printf("%u", all);
If I copy…
Ammar
- 1,203
- 5
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- 64
0
votes
1 answer
RN-41 bluetooth and dsPIC
Having a couple of issues with what I was hoping to be fairly straight forward.
I've been transmitting data from my PIC to a PC via RS232 at a baudrate of 115200. I've recently got a RN-41 bluetooth module and was hoping the switch would be as…
ritchie888
- 583
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- 27
0
votes
1 answer
Noisy ADC dsPIC
I've got a dsPIC33F collecting from two ADC channels, simultaneously, at 10bit. I'm using a timer to sample at 64Hz and have the ADC set to auto sampling, but manual conversion. Every time the timer interrupt is polled I'm clearing the sample bit…
ritchie888
- 583
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- 27
0
votes
2 answers
Let C18 throw a compiler error
Is there a way to let the C18 compiler throw an own, customized error message during compiling?
For example, consider a situation with two user-defined settings:
#define SETTING_A 0x80
#define SETTING_B 0x3f
Assume these settings can't be both…
user1544337
0
votes
1 answer
RS232 communication in MPlab
I am using MPlab to read data from a pic micro controller. I am using pic18F87J11.
The data that I want to read is on pin 3 of the DB9 of the RS232, and my RS232 is connected to the pic micro controller.
Can anyone help me or give me a simple sample…
user2226775
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0
votes
2 answers
constant expression required
unsigned char rtc_time[6] = { pThis->hoursTens, pThis->hoursUnits, pThis->minutesTens, pThis->minutesUnits, pThis->secondsTens, pThis->secondsUnits };
Does not compile. I receieve the error (6 times): constant expression required
Each of the…
Michael
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