micrcontroller requirements

Started by bhavesh gharat in comp.arch.embedded13 years ago 4 replies

Hi, We are looking for 8-bit microcontrollers with following features: Features 8-bit Microcontroller Operating Frequency 10- to...

Hi, We are looking for 8-bit microcontrollers with following features: Features 8-bit Microcontroller Operating Frequency 10- to 40-Mhz Program Memory 64KB Data Memory 4kbytes I/O ports 54- to -60 ( 3.3/5.0 v compatibilty ) ADC / channel 10bit X 8Channels (100ksps) Vcc (Volts) 2.0 -5.5 16 bit Timer 3 8 bit Timer 2 SPI 1 UART 1 I2C 1 ICSP/ICD Yes Brown-out-reset Yes Watch Do...


8051 with USB 2 High Speed 480Mbps variant ?

Started by Boo in comp.arch.embedded11 years ago 8 replies

Hi, Can anyone tell me who makes an 8051 with an on chip High Speed (480Mbps) USB 2 UART ? (Please don't tell me I don't need such a part, I...

Hi, Can anyone tell me who makes an 8051 with an on chip High Speed (480Mbps) USB 2 UART ? (Please don't tell me I don't need such a part, I do or I wouldn't be asking). Thanks, -- Boo


hi all Help me out

Started by rahul in comp.arch.embedded13 years ago 8 replies

hi everybody.. I am new in the Embedded programming .. i am writting the keyboard driver for microprocessor.. the status of UART tells me if...

hi everybody.. I am new in the Embedded programming .. i am writting the keyboard driver for microprocessor.. the status of UART tells me if any data (from keyboard) received or not from the flag register the flag register is of 32 bit ... 1) How can i check the pericular bit in this register set or not? 2) the receiver buffer is of 32 bit but data from keyboard comes in 8bit format.. ...


SMS sender

Started by ErikAkerfeldt in comp.arch.embedded11 years ago 4 replies

Hi, I like to have my small hobby system sending status SMS to my mobile. I figure the easiest way is to just connect the system, over...

Hi, I like to have my small hobby system sending status SMS to my mobile. I figure the easiest way is to just connect the system, over either UART or USB, to a cheap off the shelf mobile phone (older Nokia etc). Now to my question: Is there any standard phone with good documentation on the AT commands and/or good documentation on other API for simple GSM and Messaging operations. Br ...


BestComm Tasks for PSC1 Rx on MPC5200B

Started by Taran in comp.arch.embedded12 years ago

Hi, I am using the MPC5200B processor, the Lite5200B evaluation Board. I have a Rx BestComm Task for receivng data on PSC1 (Uart Mode) from...

Hi, I am using the MPC5200B processor, the Lite5200B evaluation Board. I have a Rx BestComm Task for receivng data on PSC1 (Uart Mode) from the Hyperterminal of the host desktop. For downloading the executable I am using the Windriver ICE, Vision Click. Compiler is diab. When I set up the Rx Task and start it and then send a text file through the Hyperterminal I get BestComm interrupts a...


Q) fast serial communication method

Started by J in comp.arch.embedded15 years ago 8 replies

Hi, Dears. These days, I am searching the fast serial communication method. It has some conditions. a. fast(more than 10Mbps) -- (No,...

Hi, Dears. These days, I am searching the fast serial communication method. It has some conditions. a. fast(more than 10Mbps) -- (No, Ehernet), (No, CAN bus) b. use the differential line c. (If possible) one chip solution like UART... I will use it board(PCB) to board(PCB) data exchange. Please, help me. Thank you. Suhyeong Jang. keumpyeon@daum.net


SPI slave comms on ATtiny26

Started by Lewin A.R.W. Edwards in comp.arch.embedded15 years ago 5 replies

What sensible methods do people use to implement SPI slave comms on AVR micros? I'm specifically working with the ATtiny26L right now. I'm...

What sensible methods do people use to implement SPI slave comms on AVR micros? I'm specifically working with the ATtiny26L right now. I'm currently using a software approach, with the select line connected to an int-on-change pin. When that int comes in, I read the state of the pin and if it's high, I turn off the USI UART and set MISO to input mode so it doesn't interfere with other devic...


Cypress PSOC CY8CKit-49-42xx Prototype Kit

Started by rickman in comp.arch.embedded5 years ago 4 replies

I am helping to port Mecrisp Forth to the PSOC and am having trouble loading my program to the eval board. I am using the $4 CY8CKit-49-42xx...

I am helping to port Mecrisp Forth to the PSOC and am having trouble loading my program to the eval board. I am using the $4 CY8CKit-49-42xx board with the more functional 4245 device. I started with a UART loopback program and modified it to be "bootloadable" which means it can be used with the bootload on this board. This is firmware on the board that accepts commands to flash a pro...


Problem in sdcc

Started by mimran in comp.arch.embedded13 years ago 2 replies

Hi All, I have a little problem, hope you can help me in this regard. I have this simple program. this is sending the continuous data...

Hi All, I have a little problem, hope you can help me in this regard. I have this simple program. this is sending the continuous data using UART0 of the EZ USB FX2. #define ALLOCATE_EXTERN #include #include void init_fx2(void); void init_uart(void); void init_uart(void){ SCON0 = 0x52; // 8 bit UART mode TMOD = 0x21;


Making a connection with Android device through USB

Started by pozz in comp.arch.embedded3 years ago 4 replies

I'm trying to find a way to make a connection between a custom MCU-based device (accessory) and an Android device (smartphone or tablet). The...

I'm trying to find a way to make a connection between a custom MCU-based device (accessory) and an Android device (smartphone or tablet). The goal is to exchange some data as with the old and good asyncronous serial (RS232/UART/RS485). My goal is to let the user configure the device through its smartphone, without power up a laptop or using local HMI (that will be surely worse than An...


Your opinions please on possible 89LPC901FN programmer product

Started by Gary Peek in comp.arch.embedded15 years ago 7 replies

We have developed a prototype board and software for the PC to program and test code for the Philips 89LPC901FN (8 pin DIP). Currently it only...

We have developed a prototype board and software for the PC to program and test code for the Philips 89LPC901FN (8 pin DIP). Currently it only works with the 901 DIP because we think that will be the easiest chip to prototype circuits with for possible novices. The 901 does not have a hardware UART but can be bit banged. It uses a second 901 to talk to the program via serial port, (bit ...


Compact Flash I/O firmware design

Started by Johnson Liuis in comp.arch.embedded14 years ago 1 reply

I am about to develop a Compact Flash I/O device for PDA (DELL AXIM). Fortunately I found a CF interface chipset with a UART port (Oxford...

I am about to develop a Compact Flash I/O device for PDA (DELL AXIM). Fortunately I found a CF interface chipset with a UART port (Oxford Ox950). Now I got a few questions about the firmware design. 1) For the PDA side (Using PocketPC2003), I think the PDA already has an "integrated" CF driver inside of PPC2003, right? If I want to rewrite this driver, what should I do? What kind of tools...


Protocol analyzer for I2C, SPI, USB

Started by MyUsenetAccount in comp.arch.embedded13 years ago 8 replies

Hi, We are looking for a good Protocol Analyzer to use mainly for I2C, SPI & UART. Also it would be nice if the analyzer supported (via add-ons...

Hi, We are looking for a good Protocol Analyzer to use mainly for I2C, SPI & UART. Also it would be nice if the analyzer supported (via add-ons or similar) other protocols (USB, ATAPI, Firewire). We are not in a rush to buy one, and would prefer to analyze the market first and then invite suppliers to demonstrate their products. Advanced features are nice but primarily we should be able ...


hobby project - 16 bit digital audio mixer using m68k

Started by Alexander Miller in comp.arch.embedded15 years ago 3 replies

Hello all, As a hobbyist project I am planning on constructing a digital audio mixer using a M68000 processor, along with some 16 bit serial...

Hello all, As a hobbyist project I am planning on constructing a digital audio mixer using a M68000 processor, along with some 16 bit serial A/D (MAX195) and D/A (MAX542) converters from Maxim. I will probably use a M68681 as a UART; also, I would like to use an analog fader (pot) fed into an 8 bit parallel ADC as the level control for each input channel. Adding a mute toggle to each inp...


transfering binary file using hyperterminal

Started by Anonymous in comp.arch.embedded5 years ago 8 replies

hi all, I want to transfer and receive a binary file using hyperterminal to the soft core processor through UART.Is it possible? Please can...

hi all, I want to transfer and receive a binary file using hyperterminal to the soft core processor through UART.Is it possible? Please can anybody give me guidelines to do this?Can anyone give me an example of how to write a binary file?is there a particular format for doing this?I want to send stream of binary bits through the hyperterminal to the processor. Thanx.


microcontroller for simple audio project

Started by ethan in comp.arch.embedded14 years ago 17 replies

hi, i'm looking for a uC for a simple portable audio project. the basic specifications i'm looking for are: - 8/16 bit datapath - hardware...

hi, i'm looking for a uC for a simple portable audio project. the basic specifications i'm looking for are: - 8/16 bit datapath - hardware multiply (8x8 ok, more bits the merrier) - 20+ MHZ instruction execution - onboard flash/SRAM (8kbytes+ FLASH, 1kbyte+ SRAM) - UART - onboard DAC (mono ok, stereo better) - free build tools - cheap! right now i'm looking at the SI Labs C8051F330....


How to erase LPC2129 -UART FIFO

Started by rk in comp.arch.embedded12 years ago 1 reply

Hi The code written for rx data in LPC2129-uartO U0LCR = 0x83; U0DLL = 39; // baud rate = 9615 @ pclk =...

Hi The code written for rx data in LPC2129-uartO U0LCR = 0x83; U0DLL = 39; // baud rate = 9615 @ pclk = 6mhz U0FCR = 0x07; //FIFO enable U0LCR = 0x03; //Rx data as 8 bits, no Parity, 1 Stop bit while(!(U0LSR & 0x01)); //executed untill U0RSR full while(U0LSR & 0x01) { ch3[x] = U0RBR; x++; ...


RS485 guard-time

Started by pozz in comp.arch.embedded3 years ago 6 replies

I just noticed a nice feature of SAM C2x microcontrollers from Atmel. It is the RS485 support, i.e. one pin (TE) goes high when the UART is...

I just noticed a nice feature of SAM C2x microcontrollers from Atmel. It is the RS485 support, i.e. one pin (TE) goes high when the UART is transmitting and goes immediately low when the last byte was really shifted out, including stop bits. There is an additional feature that Atmel named "guard time". " For RS485 mode, the guard time is programmable from 0-7 bit times and defines t...


Dummy questions from a newbie regarding how to use DMA

Started by pozz in comp.arch.embedded3 years ago 12 replies

Until now I never used a microcontroller with an embedded DMA controller, so I always use the CPU to move data from memory to memory, from...

Until now I never used a microcontroller with an embedded DMA controller, so I always use the CPU to move data from memory to memory, from memory to peripheral, from peripheral to memory. The micro usually have only a two-byte hardware FIFO (the byte currently shifting in and the previous completely received byte). So I often implement a sw FIFO buffer for receiving data from UART. In ...


printing register values from exception handler...

Started by vikasvds in comp.arch.embedded8 years ago 4 replies

Hi, I am using ECOS on ARM946. I have registered exception handlers for undefined instruction, data abort and pre-fetch abort, but i am...

Hi, I am using ECOS on ARM946. I have registered exception handlers for undefined instruction, data abort and pre-fetch abort, but i am unable to think of routine which can be useful for debugging in case of exception. I can think of printing register values of other modes to UART. Printing registers of other modes can help in finding cause of exceptions using program counter stack point...