datalogging from pic16f877a to usb-stick

[Pic_User]

Hi arie,

Welcome to the forum.

Some of the beginner’s answers can be found using the site’s search function.

For instance this previously posted answer. It refers to a “Bluetooth device” but applies to PICs hosting USB in general.

As far as I know PICs can only be used as a USB Device not a USB Host as you would require to connect the USB Bluetooth device. To do this you would need to get a USB Host controller and connect it to the PIC. Unfortunatly I havn't seen anyone do this yet but if I do I will post more info.

http://www.picbasic.co.uk/forum/showthread.php?t=3119

skimask is correct not a simple task.

-Adam-

[arie]

Thank you very much for the help.
Can you write data from pic to dos on chip module just using hserin or is it much more complicated?

thanks a lot

[skimask]

Thank you very much for the help.
Can you write data from pic to dos on chip module just using hserin or is it much more complicated?

thanks a lot

The datasheet is right there at www.sparkfun.com

[arie]

I read the datasheet for the dosonchip, but how do you read and write data from the sd chip\?

Do you need to tell which memory adress you want to write or read or is this done automatically with hserin hserout?

i use pic basic pro

[skimask]

I read the datasheet for the dosonchip, but how do you read and write data from the sd chip\?

Do you need to tell which memory adress you want to write or read or is this done automatically with hserin hserout?

i use pic basic pro

I use PicBasicPro too...imagine that...
No, you don't tell which memory address to read/write from.
This chip is a DOS on CHIP. Disk Operating System On A Chip.
It's an interface chip, a 'relatively' seamless interface chip.
With it, you can treat the SD card just like you would treat a floppy disk (or maybe a small hard drive) from a DOS command prompt. Ok, it's a bit more complicated than that, but not by much.

If this is your first project...whew...don't get me started...
If it actually is your first project...I'd back up, WAY up, and make an LED blink first.
If it isn't your first time around the block, then it really shouldn't be that hard, unless you haven't really read the datasheet (which explains everything you really need to know as long as you really READ it), or maybe you haven't messed with the serial port before, in which case, I say again, You'd better back WAY up, and make something simple first, like PC to PIC communications.

[arie]

I did make some pic projects by myself, but this is the first time I use serial communications. Hserin and hserout works perfectly with pic to pc. But i can't get serin and serin2 etc to work properly. Could it be that I use a bootloader so there must be an extra code inserted in pic basic pro just like lcd and bootloader

[skimask]

I did make some pic projects by myself, but this is the first time I use serial communications. Hserin and hserout works perfectly with pic to pc. But i can't get serin and serin2 etc to work properly. Could it be that I use a bootloader so there must be an extra code inserted in pic basic pro just like lcd and bootloader

Well then, let's see some code. That's what we're here for...