Are you looking for code optimizations? Our free MPLAB XC C Compiler comes with the majority of the optimizations you need to reduce your code by up to 70% and increase efficiency. Specifically, the free compiler contains these optimizations:
Mplab Xc8 C Compiler Keygen
Functional safety licenses also include all of the optimizations found in our PRO compiler licenses and are available in the downloads tab below. Note that these compilers only unlock when a functional safety license is purchased. For more information visit the product pages below.
(To say that the Microchip user interface when they are selling something is User Hostile is an understatement.). I did as VkPanchal suggested, and went through the process described on the Microchip website to install the XC8 compiler. I want to try the 60-day evaluation before paying good money. When I got to this screen (see attached screenshot).The MAC address was already filled in by the installer - as you can see.
This thread seemed to slip by me, so this response is more for anyone else with the same problems. There is a compiler installation and licensing guide you can read, and webinars on the installation and activation process, e.g. You will see reference to an xclm application.
In the image below you can see the compiler XC8 in the list of available compilers, under it is listed all different versions of the XC8 versions available. Since I had only version 1.12, it is the only available option under XC8.
In the left hand pane labeled Categories select XC8 Compiler. It will open up options for the compiler which is displayed on the right hand side of the window. In Option Categories select Preprocessing and messages.
You can redirect the stdout stream when using MPLAB XC8 C compiler so that printf() output is displayed in the simulator's Universal Asynchronous Receiver Transmitter (UART) console in MPLAB X IDE. To do this, you need to perform the following steps:
Serializing devices in a production environment is simple and easy using the CCS C Compiler and the Prime8 Production Programmer. The CCS C Compiler allows for setting up serialization using the #serialize preprocessor directive. A serial number can be saved in binary or as a string, and can be stored in ROM or EEPROM if available.This example shows a simple way to store a 32-bit binary serial number (4 bytes) in either EEPROM or ROM. The target device has 256 bytes of EEPROM and 32Kbytes of flash program memory, where the serial number is stored in the last 4 bytes of either depending on the defined location. The #ORG in the ROM variant is to reserve the program memory containing the serial number from being used elsewhere by the compiler.Reading a binary serial number from memory is as simple as reading the raw data directly into a variable using a byte-pointer to that variable. In the example, a pointer is created to a 32-bit variable, which is used to index the raw data bytes. The result is the 32-bit number set by the programmer.The serialization settings, or "burntime" settings, are saved in the hex file on compilation and are loaded into the Prime8's internal memory when writing the hex file to it. The initial serial number can then be set or changed on the job configuration screen.Serial numbers are automatically incremented after each successful write, so each connected target will have a different serial number written to it.To change the current serial number on the Prime8, select the Config button for the current job. On the Config screen, the file can be selected by touching the "Name/Location" setting, choosing "Internal Memory", and selecting the memory slot the file was written to. This will then show the file name and location on the Config screen. Touch the down arrow until the "Serial Number" setting is visible. Touch this setting to open a keypad where a new serial number can be entered. Once the number is entered, Press the Enter button to save the setting. Now when the program is written to the targets, the serial number that was entered will be the first serial number written (in this case, 65536), and each successive target will have an incremented serial number (65537, 65538, ...). The number can always be changed or reset by changing the setting again under the job configuration screen.Prime8 Production Programmer, visit: _info.php?products_id=P8_gangCCS C Compilers, visit: =compilersLike us on Facebook. Follow us on Twitter.About CCS: CCS is a leading worldwide supplier of embedded software development tools that enable companies to develop premium products based on Microchip PIC MCU and dsPIC DSC devices. Complete proven tool chains from CCS include a code optimizing C compiler, application specific hardware platforms and software development kits. CCS' products accelerate development of energy saving industrial automation, wireless and wired communication, automotive, medical device and consumer product applications. Established in 1992, CCS is a Microchip Premier 3rd Party Partner. For more information, please visit PIC MCU, MPLAB IDE, MPLAB ICD2, MPLAB ICD3 and dsPIC are registered trademarks of Microchip Technology Inc. in the U.S. and other countries.
/opt/microchip/mplabx/v5.50/packs/Microchip/PIC18F-K_DFP/1.4.87/xc8/pic/include/proc/pic18f26k22.h:16684:: error: (1504) the PIC18 extended instruction set was enabled but is not supported by this compiler
Now the programmer will expect 5V from your target board. It will complainif power is not there.Microchip ICSPThe easiest way to program the device is using the MPLAB X IDEOnce you have either compiled a program using one of the compilers XC8, XC16or XC32 etc. then hit the programming button to download the program into thePIC chip via the ICSP programmer PICkit3.The programming button looks like this:if(typeof ez_ad_units!='undefined')ez_ad_units.push([[300,250],'best_microcontroller_projects_com-large-leaderboard-2','ezslot_9',111,'0','0']);__ez_fad_position('div-gpt-ad-best_microcontroller_projects_com-large-leaderboard-2-0');You can find out how to program a device using a pre-built hex file here.PIC ICSP SignalsPIC ICSP provides 6 connections from the pic ICSP programmer toyour board as follows :1. VPP (or MCLRn)Programming voltage (usually 13V).2. VccPower (usually 5V).3. GNDGround (zero volts).4. PGD - Datausual port and connection RB7.5. PGC - Clockusual port and connection RB6.6. PGM - LVP enableusual port and connection RB3/RB4.The above are PICkit3 pinouts.Note: With the connections made in this order on the connectorit will not matter if the connector is placed the wrong way round as GND andVCC are then applied to clock and data. If VCC and GND had been at oppositeends of the connector then there would be a problem.Note: The above ICSP signals are pin-ordered in thesame way as the standard PicKit2/3 = good!VPP Signal (Signal a programming action)Vpp connects to the reset input of the pic microcontrollerlabelled MCLR. During programming or verify this signal is raised to theprogramming voltage (13.5V) - or VCC+3.5V. This signals to the microcontrollerthat programming/verification is about to start and for older parts, suppliescurrent.Note: Older pic micros used this line to directly power theprogramming circuit that updates the Flash memory. So this connection had tosupply some current. With the newer parts that allow LVP (Low Volt programming)the programming voltage is generated internally so the Vpp signal from the picICSP is only used as an indicator i.e. it doesn't have to supply current.VDD/VCC Signal (Power)This connection may supply power to your board - usually usinga 5V regulator (probably a 7805). This is ok for some use as you can develop aprototype board without needing any other power supply (just a power brick thatplugs into the pic programmer circuit).The only problem with it is that the programmer circuit is notdesigned for your circuit (does it have a heatsink) and it can also introducenoise to your circuit. If the programmer uses a 78L05 then you will only get100mA maximum current output.GND SignalThe ground reference - 0V.PGC and PGD Signals (Clock and Data)These are the signals that do the work. Data (PGD) and clock(PGC) transmit data to the pic micro. First data is sent either high or lowvoltage (0/1). After a suitable time the clock is strobed low to high - risingedge clocking the data into the microcontroller.PGD is also the line driven by the pic micro during verify i.e.it is bi-directional.PGM Signal (Low volt programming signal)You do not need to worry about this pin - it is for Low VoltProgramming (see below).The purpose of this pin (on the ICSP connection) is to hold PGMlow so the microcontroller does not enter LVP mode. It will usually be doneusing a pull down resistor e.g. 10k.Note: If you program the microcontroller with LVP mode off thenthis signal will have no effect.Note: PIC microcontrollers shipped with LVP enabled - so if youuse a brand new chip you can use it in LVP mode. The only way to change themode is by using a high voltage programmer.Notes on the LVP (PGM) pinIt is there in case you use a device that is enabled for LVP - low voltprogramming. Basically when you use a new device that has never been programmedbefore LVP programming is enabled by default (p58, p148 -16F88 datasheet DS30487C) so the resistor holds LVP mode off (low). This isimplied in other datasheets and not specifically stated e.g. for the18F2550.However in MPLABX If you program the chip using a project file (from the onsite projects) it is turned off anyway because I turned it off in MPLABXproject settings. Once programmed off it is never turned on again unless youchange it in a compiler project setting.You can forget about PGM especially if you have programmed the chip for the1st time using a high-volt programmer (e.g. pickit3). Remember you can alwaysprogram the device regardless of the LVP setting using a high-volt programmeri.e. LVP is an additional feature. If the LVP mode is not turned off then thepin is not usable as normal I/O it can only be used for the PGM signal - whichis why you really want to turn it off.What is LVP for?The purpose of LVP is to allow complete programming using only Vcc i.e. 5Vand no higher voltage and that means you don't have to have a dedicated powersupply voltage e.g. 12 V to program the device. i.e. you could program multipledevices on a board from one central microcontroller using LVP.The actual LVP control is in the CONFIG1 register ( p130 16F88 datasheetDS30487C - probably different for other devices) so it is either set in the IDE(MPLABX etc.) or using a #pragma directive (see your compilerdocumentation).Note: You can only program the LVP bit off using a high volt programmer.Note: There are other ways to programon-board-chips e.g. by using a bootloader. See the bootloader discussion - in shortyou use a high-volt programmer to load a small program that listens to a portfor a short while - if a code is received then it enters programming modelistening for received data and programming that into the program area of thedevice, A port can be any comms interface e.g. USB,ethernet, SPI,I2C but ismore commonly RS232. This method is used for many systems commonly popular inArduino and PICAxe.Using LVP means you do not need a bootloader so valuable program memory issaved - but you have to arrange the hardware to do it..What circuit do you need on your target board?Isolation of the ICSP PIC signalsNote that the diagram from pic ICSP application note 'DS33023A'specifically goes out of its way to not design it for you saying RB6 and RB7should be isolated but this depends on your circuit! This is not very helpfulso I have included the circuit I use on my development board (See the diagramshown earlier):To ensure you can program and verify correctly two 10kresistors isolate the programmer (and RB6 and RB7) from the rest of the circuiti.e. they stop signals at the other side from interfering with RB6 and RB7during programming. If you don't use the isolation resistors then loading ordriving the pins can stop programming all together.For example if you put an LED on RB6 (PGD) that draws 20mA whenon. The output voltage (when the output is on) will be pulled so low that thepic ICSP programmer will not be able to read back the desired voltage i.e. itwill give a verification failure.This method is useful for devices with large pinouts but if you use asmaller device you may want to use the programming pins for driving LEDs i.e.large current output and this will load the programming pins PGD and PCK toomuch. For instance when using a 12F675 with 8 pins it is better to move thedevice on a solderless breadboar (if these pins are loaded). Here's an example schematic of that solution(see 12F675 Calibration Schematic - you wire up a small solderles breadboardwith that layout)..Click PIC ICSP Setup for more details onhow to setup your ICSP system.Click PIC Parallel Port Programmerfor a Parallel port (legacy) PIC ICSP programmer project schematic. 2ff7e9595c
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