Author |
Message |
Topic: DS18B20-PAR |
Wizard
Replies: 1
Views: 5611
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Forum: General CCS C Discussion Posted: Sun Jun 18, 2006 8:37 am Subject: DS18B20-PAR |
Hi guys,
I'm using a DS18B20 in parasite power mode. I saw the new model DS18B20-PAR, which is the same but have the connection between the GND and Vcc pins within the component. So there the pin of ... |
Topic: USB enumerated sense function |
Wizard
Replies: 2
Views: 5721
|
Forum: General CCS C Discussion Posted: Tue Jun 06, 2006 5:16 am Subject: USB enumerated sense function |
Hi there, I'm using a 18F4550 with an USB connection.
I have came to the conclusion that If I don't use the sense pin (100k resistor to ground and 100k to the pin, from the Vbus), the
usb_enumer ... |
Topic: MMC SPI interfacing |
Wizard
Replies: 8
Views: 14686
|
Forum: General CCS C Discussion Posted: Thu Mar 30, 2006 1:14 am Subject: MMC SPI interfacing |
Thanks for the point, I think you mean that I dont need voltage divider in the #define MMC_DI PIN_B0 Line, which it's the data output of the MMC. That's how I have the circuit.
Thanks for the point ... |
Topic: Problem declaring a pointer |
Wizard
Replies: 1
Views: 4672
|
Forum: General CCS C Discussion Posted: Wed Mar 29, 2006 4:22 pm Subject: Problem declaring a pointer |
I have no idea why I can't compile the following var declaration, I'm going to use it to display a menu in a LCD.
char *menu[]=
{
" Start/Stop Sample",
"Show ... |
Topic: is SD backwards compatible with MMC? |
Wizard
Replies: 6
Views: 9072
|
Forum: General CCS C Discussion Posted: Wed Mar 29, 2006 3:05 am Subject: is SD backwards compatible with MMC? |
I dont have experience with SD cards, but that is what I have read.
The mmc_spi driver doesnt use the SPI hardware module, in spite of that it implements the SPI by software. To send your owns comm ... |
Topic: is SD backwards compatible with MMC? |
Wizard
Replies: 6
Views: 9072
|
Forum: General CCS C Discussion Posted: Wed Mar 29, 2006 2:27 am Subject: is SD backwards compatible with MMC? |
Hi,
The SD cards are SPI compatibles as the mmc cards, and it uses 7 lines as the mmc, so the socket for the mmc will work. But to reset the SD card and set it in SPI mode, you will have to use other ... |
Topic: MMC SPI interfacing |
Wizard
Replies: 8
Views: 14686
|
Forum: General CCS C Discussion Posted: Wed Mar 29, 2006 2:18 am Subject: MMC SPI interfacing |
I know the interfacing circuit doesn't compile with the mmc specification, but I'm using the PIC18F4550 running on 5V. So I can't connect the mmc card spi lines directly with the pic pins with the pul ... |
Topic: MMC SPI interfacing |
Wizard
Replies: 8
Views: 14686
|
Forum: General CCS C Discussion Posted: Tue Mar 28, 2006 6:06 am Subject: MMC SPI interfacing |
It was me, I forgot to login before to post.
Waiting for any ideas ot information about the issue and mmc staff |
Topic: MMC SPI interfacing |
Wizard
Replies: 8
Views: 14686
|
Forum: General CCS C Discussion Posted: Mon Mar 27, 2006 2:55 pm Subject: MMC SPI interfacing |
Hi there!
I'm adding a mmc card to my data adquisition project. I'm using a pic18f4550 with usb conection implemeted. I use a 1.8k and 3.3k voltage divider circuit to convert the 5V from the pic t ... |
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