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pic18f67j90 emulato

Started by addy in comp.arch.embedded17 years ago 1 reply

i want to join this group as i am doing a project based on this pic18f67j90microcontroller. right now sir i want to know weather there is...

i want to join this group as i am doing a project based on this pic18f67j90microcontroller. right now sir i want to know weather there is emulator for this microcontroller in the market and if it can be available in INDIA . thank you sir .


freeRTOS on PIC18F6527

Started by pietro in comp.arch.embedded17 years ago 2 replies

Hi all, I'm going to use freeRTOS on pic18F6527 (8722 family) and I noticed that the its port is suitable only on pic18F452. I would like to...

Hi all, I'm going to use freeRTOS on pic18F6527 (8722 family) and I noticed that the its port is suitable only on pic18F452. I would like to know where can I find any suggestions for this port or, better, even if anyone tried this port before. Thank you in advance, Pietro


How to Interface microcontroller with Mobile using USB

Started by rememberramu in comp.arch.embedded14 years ago 4 replies

I am doing a project where I need an interface between mobile phone and microcontroller. Actually I need to process text message...

I am doing a project where I need an interface between mobile phone and microcontroller. Actually I need to process text message on microcontroller. The mobile phone has USB output, and I found that PIC18F4550 has USB input, but both of the device acts as slave not as host. I also found that some mobile phones like Nokia 6610, Nokia 6610i and, Nokia 6210 have serial port which I can interface wit...


FAT File System module Implementation in an embedded host

Started by urefowei in comp.arch.embedded15 years ago 2 replies

HI ALL!!! I would like to be advised how this link helps.. > > > http://elm-chan.org/fsw/ff/00index_e.html ...

HI ALL!!! I would like to be advised how this link helps.. > > > http://elm-chan.org/fsw/ff/00index_e.html http://elm-chan.org/fsw/ff/00index_e.html It actually leads to a discuusion on a FAT File System Module that can be implemented in an embedded host.. What we wanna do is use a PIC18F4550 and a MAX3421E usb host controller and create a device that can perform file transfer b


Coding MAX3421E and PIC18F4550

Started by urefowei in comp.arch.embedded15 years ago 3 replies

Hi.. Can anyone help us Code MAX3421E and PIC18F4550 we are doing a thesis on a flash to flash bridge This project aims to develop...

Hi.. Can anyone help us Code MAX3421E and PIC18F4550 we are doing a thesis on a flash to flash bridge This project aims to develop microcontroller-based device that can handle data transfer from a USB storage-device directly to another USB storage-device. The previous project?s device transferring capabilities were limited in terms of data size, file types, and transfer rate. we are


PIC 18F4550 - EUSART does not generate interrupts

Started by wzab in comp.arch.embedded16 years ago 2 replies

Hi All, I have the following problem with the PIC18F4550. The EUSART is initialized as follows: movlw b'11111111' movwf...

Hi All, I have the following problem with the PIC18F4550. The EUSART is initialized as follows: movlw b'11111111' movwf TRISC,ACCESS movlw low(d'1249') movwf SPBRG,ACCESS movlw high(d'1249') movwf SPBRGH,ACCESS movlw b'00000100' movwf TXSTA,ACCESS movlw b'10000000' movwf RCSTA,ACCESS movlw b'00001000' ...


[EE] GPS logger with voice recording - Wear balancing for SD/MMC card needed?

Started by wzab in comp.arch.embedded16 years ago

Hi All, I'm just working on the open source GPS logger with voice recording (to facilitate recording tracks for the...

Hi All, I'm just working on the open source GPS logger with voice recording (to facilitate recording tracks for the http://www.openstreetmap.org project). The current architecture includes: GPS module - http://www.f-tech.com.tw/datasheet/GPS/FGPMMOPA2.pdf - first tests show, that it performs very well even at low level of GPS signal. CPU - Atmega32 or PIC18F4550 - not decided yet (the s...


USB circuit disconnects when the circuit is put near another surface

Started by Anonymous in comp.arch.embedded16 years ago 9 replies

Hello, I have built a basic circuit for the PIC18f4550 using a 20 MHz crystal from http://www.create.ucsb.edu/~dano/CUI/ . I have installed...

Hello, I have built a basic circuit for the PIC18f4550 using a 20 MHz crystal from http://www.create.ucsb.edu/~dano/CUI/ . I have installed the HID firmware from http://www.lvr.com/usb.htm (USB complete). The circuit works fine and connects ok then installs the driver as long as it is suspended in free space. As soon as the circuit comes near ( 2-3 cm) another surface (paper or the wo...


I2c chip(PCF8574) interface to PC by using PIC18F4550

Started by stanywong in comp.arch.embedded17 years ago 4 replies

Isit possible to interface the PCF8574 to the PC by using PIC18F4550 through the build in USB function? Since i would like to build the USB...

Isit possible to interface the PCF8574 to the PC by using PIC18F4550 through the build in USB function? Since i would like to build the USB by using PIC18F4550 and interface to the PC. Is there any good application by using PCF8574 i2c chip?


PIC18F4550

Started by Martin Charlwood in comp.arch.embedded17 years ago 2 replies

Hi, Anyone know how to program a PIC18F4550 using a TOP2048 programmer? The device is not supported directly just wondered if it's possible to...

Hi, Anyone know how to program a PIC18F4550 using a TOP2048 programmer? The device is not supported directly just wondered if it's possible to use a similar memory configuration. All ideas welcome, if worse comes to worse I will have to use ICSP. Regards. Martin


High speed MCU to PC transfer

Started by russ...@gmail.com in comp.arch.embedded18 years ago 1 reply

Hi everyone, If you dont mind im just after some of your thoughts regarding a project that im working on. I intend to transfer about 770KiB / s...

Hi everyone, If you dont mind im just after some of your thoughts regarding a project that im working on. I intend to transfer about 770KiB / s (kilobytes) from the PIC18F4550 (USB 1.1 controller) to a PC (will be audio samples). just wondering if anyone has had any experience with this and what sort of work on the PC software/driver side needed to be done... I cant really write in C++ (or ...


USB reset question

Started by Richard Henry in comp.arch.embedded18 years ago 2 replies

I have been observing unexpected USB resets in a product I am troubleshooting. The board has three USB devices internal to itself: a 2.0 hub...

I have been observing unexpected USB resets in a product I am troubleshooting. The board has three USB devices internal to itself: a 2.0 hub chip, a PIC18F4550 which I programmed, and a touch panel circuit. Everything works fine until we attach another device to the hub - a mouse-keyboard combination custom-designed for the overall product. Then I see all three USB devices (the PIC, the to...


MPLAB ICD 2 usage

Started by kiran_hk in comp.arch.embedded15 years ago 9 replies

I have downloaded MPLAB IDE v8.30 and installed it. I wanted to communicate PIC18F452 and PC I am using a sensor for my project which gives...

I have downloaded MPLAB IDE v8.30 and installed it. I wanted to communicate PIC18F452 and PC I am using a sensor for my project which gives analog data.I am digitizing using 10 Bit ADC in the PIC. I want save the data from the ADC to a file in the computer. Now how should I proceed in the programming the PIC. Can you help me in this regard? I am trying to use ICD 2 module in the MPLAB softwa...


RS232 interface

Started by srinusingh in comp.arch.embedded15 years ago 17 replies

hi......... iam doing ADC using PIC18f452.This ADC is 12bit. NOW i have to send that 12bit output data to PC, my problem is that in PIC we have...

hi......... iam doing ADC using PIC18f452.This ADC is 12bit. NOW i have to send that 12bit output data to PC, my problem is that in PIC we have only 8bit data transmit register , but i have to send this 12 digital data .How i can do this


Setting configuration bits in code

Started by Nickolai Leschov in comp.arch.embedded16 years ago 1 reply

Dear friends, I have a MPLAB IDE project where configuration bits for the device are set in project options. I want all configuration data...

Dear friends, I have a MPLAB IDE project where configuration bits for the device are set in project options. I want all configuration data for the application to be contained in source code. How do I set set configuration bits in code? My CPU is PIC18F452, compiler is HI-TECH PICC-18 V8.35 PL3 Regards, Nickolai Leschov


Make script

Started by Nickolai Leschov in comp.arch.embedded16 years ago 12 replies

Hello! I have a project that used to be compiled via IDE. As I didn't like the IDE much, I made a 'make' script to compile it. I had to use...

Hello! I have a project that used to be compiled via IDE. As I didn't like the IDE much, I made a 'make' script to compile it. I had to use extended syntax so it will run on NT-XP, not Win98 and the like. Host OS: Windows XP Target: PIC18F452 CPU Language: C Compiler: HI-TECH C Compiler IDE: MPLAB IDE Target is an embedded CPU, so I compile code on host machine then write it to ...


OV7620 RGB demosaicing problem

Started by ksanthos in comp.arch.embedded16 years ago 4 replies

Hello, I'm working on an imaging system which uses C3188A digital cmos camera(contains OV7620 image sensor). It is controlled by a PIC18F452...

Hello, I'm working on an imaging system which uses C3188A digital cmos camera(contains OV7620 image sensor). It is controlled by a PIC18F452 and each frame I want to view is stored in a FIFO buffer, AL422B. I can store a frame and transfer it to my PC by RS232. However I have a problem with the images, they look gray scale although they should be RGB. I have configured OV7620 to transmit QVGA...


pic18f452 interrupts

Started by vijayguru in comp.arch.embedded16 years ago 1 reply

how to handle 4 interrupts in pic18f452 out four interrupts 2 are low interrupts and other two are high but we are having only two vector address...

how to handle 4 interrupts in pic18f452 out four interrupts 2 are low interrupts and other two are high but we are having only two vector address plz suggest me anybody


PIC problem

Started by 2Penny in comp.arch.embedded19 years ago 1 reply

Ladies, Gentlemen: I'm somewhet new although I've been lurking here a while. I've got a problem I hope someone has some...

Ladies, Gentlemen: I'm somewhet new although I've been lurking here a while. I've got a problem I hope someone has some insight into. I bought the PICDEM2+ with ICD2 combo. I was interested in learning the PIC assembly language, but now I'm solving a 3 phase power problem and bought a couple of pic18f4431 processors and stuck one in my PICDEM2+ boa...


problem to activate correctly pic18f442 PWM module

Started by El75 in comp.arch.embedded20 years ago 1 reply

Dear Sirs, I work with PIC18F442,Fosc =16 MHz and want to generate PWM 4 KHz with Duty cycle of 50% through CCP2 Module. The duty cycle,...

Dear Sirs, I work with PIC18F442,Fosc =16 MHz and want to generate PWM 4 KHz with Duty cycle of 50% through CCP2 Module. The duty cycle, I've received, is too small and the PWM period is not correct (3.76 KHz). An other one problem is that the duty cycle is not permanent. Probably I didn't understand correctly how to initialize. What's wrong with this ? void Start_Buzzer(void) { ...



The 2024 Embedded Online Conference