This product looks very poorly documented and supported, you might get it working. Bootloaders must be written and compiled for exactly the setup you are using: Any tiny little thing wrong and it wont work- very frustrating. Unless the unit comes with a bootloader already programmed into the chip?
Again, the documentation sucks. If you have a PICKIT2 or 3, you could program it, but not without making your own cable to get the pin-out correct, unless they include this? Buy a dev board from Microchip, they spent millions getting the software and hardware right, ME Labs, not-so-much. The support forums for Microchip have lots of Q and A to help you debug stuff. In summary: Learning to program these things is hard enough without having to struggle with a poorly documented board, life's too short. A bootloader is a program you must first install into a micro using a programmer so code updates and such do not require a programmer. But the egg always comes before a chicken so you need that programmer.
This board you chose works with something they call the EPIC programmer. I suggest you look into that or some comparable programmer and forget this bootloader idea. Probably best to chuck the EPIC thing and get a PICkit but they wired the EPIC socket so it is not comparable without a pin adaptor socket.
Their programmers are rather expensive compared to PICkits and I don't see they have in circuit debugging ability. You want that.
Bootloaders are not development tools. Avery template 5161 word. What advantage does using the IDE for PBP have? Does it do in circuit debugging? If not then it is not recommend for use.
I once used PBP and found I has some serious issues such as not flagging bad syntax and report successful compilation. Microchip gives away very good C compilers so I don't see the need togonthrd party and pay for one. If I was to pay to use Basic I would use Oshonsoft Basic as it is very good and quite inexpensive. There are Development boards that use PICkits directly, similar price. I have both the PICkit II and III (I also have the PICkit I but that is a diffent thing) and while I prefer the way II works over III it is the III that is compatable with all newer PICs and is still supported by Microchip. So if you are getting one PICkit get the III.
Is giving you excellent advice here. As for what it takes to get up to speed on the Microchip platforms, the time you spend messing around with getting third party stuff to work would be much better spent in getting up to speed with MPLAB, XC8 and debugging with PICkits.
Even with things like Code Configurator (which I guess is getting better, I don't use it) if you are going to do anything worthwhile, you eventually will have to come to grips with the internals of the PIC and its peripherals. Might as well start now. 'after development, simply replace the D-Stick with the pinout-compatible, production-ready PIC16F1937' That is a good take on how these evaluation boards work. I'm sort of catching on that coders settle in with a 'favorite chip'. Is that the case? I think I might have bought enough PIC's then. Charter arms 38 special serial numbers.
I've been using different boards and software so have chips that are supported by them. ' 'Is that the 'LAB-X1 Experimenter Board (Assembled)' for $199.95? That's very expensive. Still needs a programmer.'
![Picbasic Serial Examples Picbasic Serial Examples](/uploads/1/2/3/8/123807303/609652073.jpg)
I'm getting to know them at MELabs. They seriously need a Hobbyist's corner like CSS and there C Compiler has. I'll mention that to them. Maybe the D-Stick is there and PICBasic Student Edition is their 'Hobbyist's Corner'.
PicBasic PRO Examples PicBasic PRO Examples These examples are designed to demonstrate how to use a PIC16F877 and PicBasic PRO to communicate with our modules, most of these examples use the LCD03 display module to show the results. All the modules which use the I2C bus have 1k8 pull-up resistors to 5v. You only need one set of resistors for the whole I2C bus regardless of however many I2C devices you have connected to it. You can find more information about the I2C bus in our. Note - Pin 1 of the PIC16F877 is MCLR. When your programmer is not connected to this pin, it should be pulled to +5v with a resistor.
Any value from 1k to 47k should be fine. You may need disconnect it when the programmer is connected.: Magnetic Compass Ultrasonic Ranger Ultrasonic Ranger Ultrasonic Ranger Ultrasonic Ranger Ultrasonic Ranger Ultrasonic Ranger Ultrasonic Ranger 8 Pixel Thermal Sensor Servo Controller Servo Controller 24V 20A Motor Driver Dual 24V 5A Motor Driver RD02 Motor Driver Relay Module This uses the I2C bus to connect the PIC16F877 to the CMPS03. It reads the bearing as a 16 bit integer and displays the bearing as a number 0.0-359.9 on the LCD03. Download the file The SRF01 uses a single pin for both serial input and output. You can have up to 16 SRF01's connected to a single pin. The Range is displayed on an LCD03 module. Download the file The SRF02, SRF08, SRF10 and SRF235 all use the same I2C interface.
The basic ranging commands are the same, so this example works for all these rangers. Download the file As the SRF04 and SRF05 use the same method of communicating this example is compatible with both the SRF04 and SRF05.
Download the file This example uses the SRF05 in one pin mode, where the Trigger and Echo signals appear on the same pin. Note the SRF05's mode pin is connected to ground to place it in one pin mode. Download the file Although the SRF08 is compatible with the SRF02 example, this example uses the SRF08 to take range and light readings and displays them on the LCD03. Download the file The TPA81 connects to the PIC16F877 using the I2C bus.
This example displays the ambient temperature and 8 temperatures from thermal sensor, on an LCD03 module and drives a servo. Download the file This example shows how to drive a servo by using the SD20 chip, you can control up to 20 servo's. Download the file The SD21 is a ready wired module which can save a lot of time compared to the SD20 above. This example moves all servos through their maximum range. Download the file This example runs the motor forwards and backwards, displaying the temperature and motor current on the LCD03. Download the file This example runs the motors forwards and backwards.
Download the file This example drives the RD02 motors and displays the encoder values on the LCD03 in hex format, as well as the battery voltage. It runs the motors back and forth between 2 values output by the encoders. Download the file Example of switching all the relays on and then off, and then turning them on and off individually. Download the file.
Hello, My current setup: LCD: NX4832T035 Nextion Editor: v0.32 PIC: 18F4620 My layout: Number component (n0), val=9 Button component (b0), Touch Press Event: n0.val=5 Debug: Works fine, Simulator Data on press: 0x65 0x00 0x01 0x01 0xff 0xff 0xff I am trying to send a command from PIC to Nextion through serial port to change something on display. To confirm that I'm using the correct ports, I tried below code with the printer which is using the same pins and it is working fine.
DEFINE HSERBAUD 9600 HSEROUT 'printer testing',13,10 So far I've tried: hserout 'n0.val=2' hserout '0xff' hserout '0xff' hserout '0xff' hserout 'n0.val=2 0xff 0xff 0xff' Serout2 portc.7,84,'n0.val=2' Serout2 portc.6,84,'n0.val=2' Do you have any recommendations for me? There is a major bug inside the Nextion protocol description 1. The instruction is end with three bytes '0xff 0xff 0xff' is definitely wrong. Correct is 1. The instruction start and end with three bytes '0xff 0xff 0xff' When you send b0.txt='abc' & chr(0xff,0xff,0xff) it won't work When you send instead chr(0xff,0xff,0xff) & b0.txt='abc' & chr(0xff,0xff,0xff) it works as expected The chr(0xff,0xff,0xff) must be send before AND after EVERY given command!!!!! Bas, frankly speaking, you are wrong.:-) Finally, you 'got' it to work, but NOT because your code works, only because of some special conditions and behave of the Firmware. Let me explain.
First do following. Power Off your display, and Power ON it again - Now send exactly ONE time your 'working' code - And you will see it WONT work - Now send the same again exactly one time - And NOW the display shows your data What happens, and why did it NOT display first time? The Nextion Firmware has no timeout method implemented, means, you can send data whenever you like, in one block, in different blocks with big delays between, the Nextion firmware dont care about. Euro truck simulator 2 mods maps europe uk. You turn on the Nextion, its RX buffer is empty.
Now you send b0.val=123 chr(0xff,0xff,0xff) - nothing happens - BUT in the RX buffer is now ONE time a chr(0xff,0xff,0xff) - and when you send again b0.val=123 chr(0xff,0xff,0xff) - the Nextion just adds this to its RX buffer - now the buffer contains from 2 transmissions b0.val=123 chr(0xff,0xff,0xff) b0.val=456 chr(0xff,0xff,0xff) And so, the firmware finds a valid chr(0xff,0xff,0xff) b0.val=456 chr(0xff,0xff,0xff) and displays it correctly. BUT it is the sec. Value and not the first Honestly, this is NOT the exact explanation, because when you - turn off display - then send - b0.val=1 chr(0xff,0xff,0xff) -b0.val=2 chr(0xff,0xff,0xff) -b0.val=3 chr(0xff,0xff,0xff) -b0.val=4 chr(0xff,0xff,0xff) -b0.val=5 chr(0xff,0xff,0xff) you can see 2,3,4,5 instead of 2,4 (as it should be with above explanation). Anyway, the 1 is always missing after power on. So the save way to display ALWAYS correctly EXACTLY what you send out is, put a leading and trailing chr(0xff,0xff,0xff) around your data and commands, and all works as expected.
If there is one chr(0xff,0xff,0xff) too much somewhere, it wont matter, the Nextion just does nothing about. But without them, you will have conditions, where data are definitely lost.
Hi Bas, the initialisation after power on CAN be the reason. But I am not really sure about. Other points are - you never know when the display is reset, you also can reset by accident - power failure - display and remote mcu use separate power supply - corrupted transmission - your remote mcu does NOT mandantory know, when the connected display will reboot.
Python Serial Examples
Means, the display can restart without your knowledge, and then commands with only trailing chr(0xff,0xff,0xff) just wont work anymore. So, the save way for any situation is leading AND trailing chr(0xff,0xff,0xff).
The more on protocol overhead is the price for 'working under all circumstances' Best regards Gerry. I agree that the save way is to send the extra instructions each time. On the other hand, it is not difficult to implement a initialization procedure in the uC. I think it also depends on your application. In my current application the data to the Nextion will be updated every 2 to 5 seconds. And it is not really a problem if occasionally some data is missed.
I haven't tried reading data from the display though. If I miss updates made by the user on the Nextion then that would be a bit more problematic. So, yes we might need to chose the save way. Point is, the remote instance wont get any automatic feedback from the display in case of a reboot. Means, you surely can implement an initialization routine inside your code, but you dont know when you must send it. At power on is only one out of many other possibilities.
So, you either can - add on a hprint command on page0 at startup to send out a message everytime the display boots. But remember, this is also send out everytime the page is displayed. So, thats not really 100% a boot-indicator. And the remote instance must handle this message. remote instance and display use same power supply. Remote instance initialize display once at power on.
That may work on embedded independent devices, but also not 100% save. The display can also be reset independent of the remote instance so, instead of managing different code libraries, based on the final project, it is more easy to - Just initialize with every command (leading ff,ff,ff) and it just works.
Arduino Serial Examples
Even with 9600 Baud, the 3 Bytes more is not that much to care about.
![Serial examples Serial examples](/uploads/1/2/3/8/123807303/352465021.jpg)
![Serial Serial](/uploads/1/2/3/8/123807303/122831749.png)
:: Programming Clues Hardware Clues microEngineering Labs, Inc. 1-719-520-5323 Example Program - USART.pbp PICBASIC PRO program to demonstrate reading & writing the hardware serial port without HSERIN/HSEROUT.
Defaults to 2400 bps. ' Name: USART.pbp ' Compiler: PICBASIC PRO Compiler 2.6 ' Assembler: PM or MPASM ' Target PIC: 16F, 18F with hardware USART ' Hardware: PC hardware serial port connection ' Oscillator: 4MHz external crystal or resonator ' Keywords: HARDWARE USART ' Description: PICBASIC PRO program to demonstrate reading & writing ' the hardware serial port without HSERIN/HSEROUT.
Defaults to 2400 bps.