Il me semble que RS232 ne peut pas être utilisé comme un bus. C'est une simple communication entre 2 devices (1 master et 1 slave par ex.).
Le mieux serait d'utiliser un convertisseur USART -> RS485, car le RS485 permet la communication entre 32 devices sur le même bus.
- Nicolas
Search found 527 matches
- Fri Aug 09, 2013 2:39 pm
- Forum: Forums d'aide en français
- Topic: Problème de communication RS232???
- Replies: 5
- Views: 5083
- Fri Aug 09, 2013 2:30 pm
- Forum: Programming Tips & Tricks
- Topic: spi 12bit digital to analog chip
- Replies: 14
- Views: 16847
Re: spi 12bit digital to analog chip
Probably best to use a buffer, power transistor or some sort of FET to not draw to much current from the DAC.
- Nicolas
- Nicolas
- Thu Aug 08, 2013 9:32 am
- Forum: General Programming
- Topic: EEPROM Operation
- Replies: 29
- Views: 21306
Re: EEPROM Operation
Proteus has some glitch with pull up resistors.
I've had some simulation issues on one of my schematics because of that. Really annoying...
The only way to be sure your program works is by testing it on hardware.
I've had some simulation issues on one of my schematics because of that. Really annoying...
The only way to be sure your program works is by testing it on hardware.
- Wed Aug 07, 2013 9:52 pm
- Forum: General Programming
- Topic: Schematic Drawing Program
- Replies: 6
- Views: 5652
Re: Schematic Drawing Program
Hi Ben,
Does that mean that anyone could make a plugin for Flowcode v6 ?
Will there be any kind of documentation on how to do this ?
Just curious.
- Nicolas
Does that mean that anyone could make a plugin for Flowcode v6 ?
Will there be any kind of documentation on how to do this ?
Just curious.
- Nicolas
- Wed Aug 07, 2013 9:41 pm
- Forum: Flowcode V5
- Topic: Flowcode6 Open Beta - Released!!
- Replies: 12
- Views: 10418
Re: Flowcode6 Open Beta Planned - 08/08/13
The video looks awesome!
Very impressive. I love the 3D interaction.
Must have been though to add that to Flowcode .
- Nicolas
Very impressive. I love the 3D interaction.
Must have been though to add that to Flowcode .
- Nicolas
- Wed Aug 07, 2013 9:27 pm
- Forum: Flowcode V5
- Topic: Help with KS0073 Initialization
- Replies: 10
- Views: 7662
Re: Help with KS0073 Initialization
Hi again, 1) We are talking about the initialization of an LCD. This is done at the power up of the microcontroller and LCD. I've never seen anyone do an LCD initialization in the middle of his code. I don't think you need to optimize this as much as you'd want. Whenever you are initializing somethi...
- Wed Aug 07, 2013 3:59 pm
- Forum: Flowcode V5
- Topic: Help with KS0073 Initialization
- Replies: 10
- Views: 7662
Re: Help with KS0073 Initialization
Hi Jac, 1) I do both: "while(readBusyFlag());" and then a delay. Just to be sure and because the controller needs 1/2Fosc before sending a new instruction. (I think I read that somewhere) 2) It does not match the timings, but I think it should work. I have made my WS0010 driver like that. I didn't f...
- Wed Aug 07, 2013 7:18 am
- Forum: Flowcode V5
- Topic: Help with KS0073 Initialization
- Replies: 10
- Views: 7662
Re: Help with KS0073 Initialization
I've recently made a WS0010 driver (only 8 bit mode done). Here's how I've done it. First thing I did, is I made a "sendByte" function that is able to send instructions, as well as data to be written on the LCD. So my function looked something like this: /* u8 = unsigned 8 bit value (unsigned char) ...
- Wed Aug 07, 2013 3:58 am
- Forum: Programming Tips & Tricks
- Topic: spi 12bit digital to analog chip
- Replies: 14
- Views: 16847
Re: spi 12bit digital to analog chip
Same here! I think you can easily make a crappy function generator with it. Have a PC program send a data pakket of a sine/triangle/sawtooth waveform to a microcontroller. Then use that microcontroller to send the data, through SPI, to the DAC. I just ordered some MCP4821, 5V, 12 bit, int ref (2.048...
- Fri Aug 02, 2013 4:47 am
- Forum: Flowcode V5
- Topic: Help with KS0073 Initialization
- Replies: 10
- Views: 7662
Re: Help with KS0073 Initialization
Looks like the controller used is a RW1067. I don't know if it's the same as a KS0073, but I've found this datasheet : http://www.newhavendisplay.com/app_notes/RW1067.pdf Take a look at it, it explains what you need to do to drive that LCD. There's even an initialization flowchart. Try to program it...
- Fri Aug 02, 2013 4:08 am
- Forum: Forums d'aide en français
- Topic: Problème de communication RS232???
- Replies: 5
- Views: 5083
Re: Problème de communication RS232???
Essaye de brancher ton PIC en SOIC via un USART <-> USB a ton PC et vérifie que ton PC reçoit bel et bien des données (via un programme comme hyperterminal comme PuTTY).
- Nicolas
- Nicolas
- Fri Aug 02, 2013 4:03 am
- Forum: Forums d'aide en français
- Topic: Flowcode AVR et LCD grove
- Replies: 1
- Views: 2992
Re: Flowcode AVR et LCD grove
Bien sur.
Soit tu fais tes propres fonctions pour communiquer avec le LCD via l'USART de ton AVR, soit tu essayes d'utiliser la librarie fournie, dans flowcode.
Si elle est open source ça devrait être possible via le "custom macro" si je ne me trompe pas.
- Nicolas
Soit tu fais tes propres fonctions pour communiquer avec le LCD via l'USART de ton AVR, soit tu essayes d'utiliser la librarie fournie, dans flowcode.
Si elle est open source ça devrait être possible via le "custom macro" si je ne me trompe pas.
- Nicolas
- Thu Sep 13, 2012 3:00 pm
- Forum: C and ASM Programming
- Topic: Using HP-488 with MPLAB
- Replies: 5
- Views: 7864
Re: Using HP-488 with MPLAB
There's a way to execute a command line after compiling the code so the code is automatically sent to the PIC.
Just like Flowcode does it, but it's not that great. If you do it like this, it's executed every time you compile.
Nicolas
Just like Flowcode does it, but it's not that great. If you do it like this, it's executed every time you compile.
Nicolas
- Sun Sep 09, 2012 7:47 pm
- Forum: Programming Tips & Tricks
- Topic: Touch Sensitive Switch
- Replies: 11
- Views: 11647
Re: Touch Sensitive Switch
Probably some AD conversion using the PIC.
Have you tried probing the inputs ? See what the signal looks like.
If you know what happens when you touch the switches you could probably make your own program.
Nicolas
Have you tried probing the inputs ? See what the signal looks like.
If you know what happens when you touch the switches you could probably make your own program.
Nicolas
- Wed Aug 08, 2012 8:06 pm
- Forum: General Programming
- Topic: arduino code questions
- Replies: 7
- Views: 4450
Re: arduino code questions
The arduino is not a good device to learn C. It's more a C++ with weird functions (setup, loop, ...).
(Yep, I don't like it)
(Yep, I don't like it)
- Sun Aug 05, 2012 7:44 pm
- Forum: Programming Tips & Tricks
- Topic: UART NETWORK
- Replies: 10
- Views: 8433
Re: UART NETWORK
Nice little device
- Sun Aug 05, 2012 12:57 pm
- Forum: Programming Tips & Tricks
- Topic: UART NETWORK
- Replies: 10
- Views: 8433
Re: UART NETWORK
Is that a portable frequency generator ? (bottom right of the image)
Nice project.
Nicolas
Nice project.
Nicolas
- Thu Aug 02, 2012 11:43 am
- Forum: Flowcode V5
- Topic: PB with MACRO on Flowcode 5 AVR pro
- Replies: 46
- Views: 26314
Re: PB with MACRO on Flowcode 5 AVR pro
What error do you get ?yann.cosson wrote:i tried the last flow you send me with 3 macro, it works on Flowcode, but when i want to flash it in my card i have an error.
when i flash one of my flowcode it's ok.
- Wed Aug 01, 2012 5:08 pm
- Forum: Flowcode V5
- Topic: PB with MACRO on Flowcode 5 AVR pro
- Replies: 46
- Views: 26314
Re: PB with MACRO on Flowcode 5 AVR pro
Hmmm, that's true. No idea why you have that problem.
Could it be hardware related ? Fuses maybe ?
EDIT : Didn't see David's post, my bad
Could it be hardware related ? Fuses maybe ?
EDIT : Didn't see David's post, my bad
- Wed Aug 01, 2012 2:59 pm
- Forum: Flowcode V5
- Topic: PB with MACRO on Flowcode 5 AVR pro
- Replies: 46
- Views: 26314
Re: PB with MACRO on Flowcode 5 AVR pro
I try your debug.fcf_avr and when you see the simu on flowcode the LED A7 bright, and after A6 and after A5, It's correct, no ? But on my card, the LED A7 set on and off, and after LED A6 set on and off, but after :( LED A7 bright again, and after A6, etc ......, A7, A6, A7, A6, ..... A5 never get ...
- Wed Aug 01, 2012 3:59 am
- Forum: Flowcode V5
- Topic: Programming failed: <6>
- Replies: 12
- Views: 7461
Re: Programming failed: <6>
You'll have to subscribe to the v5 forum : http://www.matrixmultimedia.com/mmforum ... =46&t=9958
I'll move this topic for you .
Nicolas
PS: I have no idea why it fails :/. I'm sure someone else if not the admins will be able to help you more.
I'll move this topic for you .
Nicolas
PS: I have no idea why it fails :/. I'm sure someone else if not the admins will be able to help you more.
- Wed Aug 01, 2012 3:46 am
- Forum: Programming Tips & Tricks
- Topic: MPASM decompiler
- Replies: 2
- Views: 6945
Re: MPASM decompiler
Awesome, I didn't know you could do that with MPLAB. Hope this feature is still available in MPLAB X. Anyways, I needed an open source decompiler as I want to do something like this with MPASM instructions: http://buddhahacks.files.wordpress.com/2008/06/cineunpack-graph-idapro52.png But couldn't fin...
- Wed Aug 01, 2012 2:07 am
- Forum: Flowcode V5
- Topic: Programming failed: <6>
- Replies: 12
- Views: 7461
Re: Programming failed: <6>
There's a slider on the right side when selecting the oscillator.
Choosing XT will tell the microcontroller to use the external oscillator.
Also, if you're using Flowcode v5, please subscribe to that forum. If it's the free version then I'll move it to the free section of the v5 forum.
Nicolas
Choosing XT will tell the microcontroller to use the external oscillator.
Also, if you're using Flowcode v5, please subscribe to that forum. If it's the free version then I'll move it to the free section of the v5 forum.
Nicolas
- Wed Aug 01, 2012 1:08 am
- Forum: Flowcode V5
- Topic: Programming failed: <6>
- Replies: 12
- Views: 7461
Re: Programming failed: <6>
Are you using an external or internal oscillator ? If it's just a blink led test, I'd try with the external oscillator of ~19MHz that came with the programmer board. In Flowcode, go to 'Build' then 'Project Option'. If you haven't changed the clock speed, it should be set to 19660800-ish. Try the fo...
- Wed Aug 01, 2012 12:57 am
- Forum: Flowcode V4
- Topic: RC Servo Tool resolution
- Replies: 2
- Views: 2987
Re: RC Servo Tool resolution
How many servos are you using ?
If it's just one, you could make your own PWM. Depending on the microcontroller you have, I think you can get a 10 bit PWM or maybe more I don't know for sure.
Nicolas
If it's just one, you could make your own PWM. Depending on the microcontroller you have, I think you can get a 10 bit PWM or maybe more I don't know for sure.
Nicolas